Home Vestnik MGSU Library Vestnik MGSU 2013/7

Vestnik MGSU 2013/7

DOI : 10.22227/1997-0935.2013.7

Articles count - 22

Pages - 186

ARCHITECTURE AND URBAN DEVELOPMENT. RESTRUCTURING AND RESTORATION

Formation of a new south-western direction in development of Yerevan city centre: consistency of architectural planning solutions

  • Aloyan Artem Al’bertovich - Yerevan State University of Architecture and Civil Engineering (EGUAS) Candidate of Architectural Sciences, Associate Professor, Department of Theory of Architecture, Restoration and Restructuring of Historical and Architectural Heritage, Fine Arts and History, Yerevan State University of Architecture and Civil Engineering (EGUAS), 105 Teryana st., Yerevan, 0009, Republic of Armenia.

Pages 7-14

The author discusses the problem of consistency between the existing architectural environment and new architectural planning solutions in the south-western part of the Yerevan city centre.The article is based on the analysis and systematization of spatial planning, architectural, design, historical, and literary sources covering Yerevan and its architecture. Business districts of urban centres are also taken into account.The author analyzes the features of formation and development of the centre of Yerevan and interrelation between planning solutions and concepts at different stages of its master plan development. A detailed analysis of spatial planning solutions applicable to the south-western part of the city center as a territory full of cultural and historical landmarks is provided in the article.This area has the size of dozens of square kilometers, and it is composed of the main urban design dominants, such as the historical nucleus with the ensembles of citywide importance and monuments of the so-called Tamanian period, the Republic square, lake Yerevan, and Paskevich hill.Numerous historical settlements, such as the Urartian fortress, Karmir Blur, Shengavit, Yerevan fortress, old Nork and others are situated here. The area has historical gardens (Dalma, Sardur gardens), beautiful panoramic view sites as the best viewpoints for the visual perception of Ararat mountain, and natural landscapes.The importance of consistency of spatial planning policies of the urban development documentation such as the Master plan of Yerevan is emphasized. The analysis and substantiation of the value of the area is considered. Research-backed proposals are provided in terms of the optimization of architectural planning solutions.

DOI: 10.22227/1997-0935.2013.7.7-14

References
  1. Gasparyan M.A. Analiz razvitiya kompozitsii general’nogo plana Erevana [Analysis of Development of the Composition of the Yerevan Master Plan]. Arkhitektura, gradostroitel’stvo, stroitel’stvo. Sb. nauchnykh trudov. [Architecture, Urban Planning, Construction. Collection of Research Works]. Yerevan, 2003, EASI Publ., vol. 1, pp. 19—20.
  2. Gasparyan M.A. Arkhitektura Erevana XIX — nachala XX veka [The Architecture of Yerevan in Late 19th — Early 20th Century]. Yerevan, 2008, Ushardzan Publ., 262 p.
  3. Dolukhanyan L.K. Arkhitektura Sovetskoy Armenii: 20-e gody [Architecture of Soviet Armenia: the 20ies]. Erevan, Sovetakan grokh publ., 1980, 84 p.
  4. Khalpakhchyan O.Kh. Arkhitekturnye ansambli Armenii [Architectural Ensembles of Armenia]. Moscow, Iskusstvo Publ., 1980, 480 p.
  5. Arutyunyan V.M. Kamennaya letopis’ armyanskogo naroda [Stone Chronicles of the Armenian People]. Erevan, 1985, Sovetakan grokh publ., 200 p.
  6. Asratyan M. Armyanskaya arkhitektura rannego khristianstva [Armenian Architecture of Early Christianity]. Moscow, 2000, Inkombuk publ., 400 p.
  7. Yastrebova N. A. Sovremennyy gorod: osnovnye tendentsii i varianty vozmozhnogo razvitiya [Contemporary City: Core Trends and Options for Potential Development]. Vestnik Volgogr. gos. arkhit.-stroit. un-ta. Ser.: Str-vo i arkhit. [Vestnik VolgGASU. Series: Construction and Architecture]. 2012, no. 27(46), pp. 129—136.
  8. Puchkov M.V. Dekonstruktsiya i rekonstruktsiya urbanizirovannykh territoriy [Deconstruction and Reconstruction of Urbanized Territories]. Academia. Arkhitektura i stroitel’stvo. [Academy. Architecture and Construction]. 2009, no. 3, pp. 57—60.
  9. Dobritsyna I.A. Transnatsional’nyy kapitalizm i arkhitektura global’nykh gorodov [Transnational Capitalism and Architecture of Global Cities]. Arkhitektura i stroitel’stvo Moskvy [Moscow Architecture and Construction]. 2010, vol. 551, no. 3, pp. 11—20.
  10. Safaryan Yu., Aloyan A., Aloyan K. K probleme formirovaniya gradostroitel’noy strategii Armenii na sovremennom etape [On the Problem of Formation of the Present-day Urban Strategy of Armenia]. Sb. nauchnykh trudov EGUAS [Collection of research Works of the Yerevan State University of Architecture and Civil Engineering]. Erevan, 2008, vol. II (32), pp. 3—5.
  11. Rogers R., Gumuchdjian P. Cities for a Small Planet. London, Faber and Faber, 1997, 180 p.
  12. Safaryan Yu.A., Gasparyan M.A., Aloyan A.A. The master plan of Yerevan Proceedings of 3rd International Conference on Contemporary Problems in Architecture and Construction “Architecture and Urban Construction on the Low-carbon Strategies”. Beijing, China, November 20—24, 2011, pp. 1–30—1-35.

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Historyand reconstruction of the convent of Martha and Mary

  • Kotova Elena Vasil’evna - Moscow State University of Civil Engineering (MGSU) engineer, Laboratory for Examination and Reconstruction of Buildings and Structures, Department of Testing of Structures; +7 (495) 287-49-14 (ext. 13-31), Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kunin Yuriy Saulovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Chair, Department of Testing of Structures; +7 (495) 287-49-14, ext. 1331, 1150., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kotov Viktor Ivanovich - Moscow State University of Civil Engineering (MGSU) sector leader, Laboratory for Examination and Reconstruc- tion of Buildings and Structures, Department of Testing of Structures, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 15-21

The article deals with the methods of restoration of large buildings of Orthodox churches in Russia. Practical solutions, described in the article, are applicable to the majority of church buildings partly demolished or rearranged during the Soviet era. The authors describe the restoration works performed at the convent of Martha and Mary as a good example of this practice. The article is focused on the general issues that complicate the restoration process, including lack of any uniform restoration solutions, lack of global cultural legacy protection programs, and the poor technical condition of restored buildings.The authors provide an overview of the restoration project that involved restoration and renovation of the New Jerusalem monastery building and Znamenskaya church building in Kholmy village. The solution was to have several subcontractors involved into the design and construction process. Department of reconstruction and structural inspection (ORZS) of Moscow State University of Civil Engineering (MGSU) was responsible for the supervision over the process of restoration and the work quality control. This article highlights the growing demand for the restoration control, especially if versatile assignments associated with foundations, structural, mechanical and finishing works are performed by different contractors. Special attention is driven to advanced waterproofing solutions applicable to underground structures, as leaks damage unique wall paintings. The authors raise the issues of research into the international experience of reconstruction and restoration of architectural monuments, methods of boosting religious tourism and respect for the history of Russia.

DOI: 10.22227/1997-0935.2013.7.15-21

References
  1. Sayt Marfo-Mariinskoy obiteli [Website of the Convent of Martha and Mary]. Available at: http://www.mmom.ru. Date of access: 15.04.2013.
  2. Ivanova E.V., Gorinov M.M., Sharipov A.M. Marfo-Mariinskaya obitel’ miloserdiya k 100-letiyu sozdaniya Obiteli [Convent of Martha and Mary’s Mercy. On the Occasion of the Convent’s Centenary]. Moscow, Belyy gorod publ., 2009, 494 p.
  3. Shargunov A. Podvizhniki Marfo-Mariinskoy obiteli miloserdiya [Hermits of the Convent of Martha and Mary’s Mercy]. Moskovskoe podvor’ye Svyato-Troitskoy Sergievoy Lavry publ., 2001, 144 p.
  4. Mikhaylovskiy E.V. Restavratsiya pamyatnikov arkhitektury. Moskva. [Restoration of Architectural Monuments. Moscow]. Izdatel’stvo literatury po stroitel’stvu publ., 1971, 96 p.
  5. Smirnova L.M. Metody sovremennoy restavratsii [Methods for Contemporary Restoration]. Available at: http://icon-art.narod.ru/artikle22.html. Date of access: 12.04.2013.
  6. Otchet po inzhenerno-tekhnicheskomu obsledovaniyu kripty Marfo-Mariinskoy obiteli. OOO «Tekhorgstroy». [Report on the Engineering Examination of the Undercroft of the Convent of Martha and Mary]. Tekhorgstroy Open Joint Stock Company, 2012.
  7. Banister Fletcher. A History of Architecture. Architectural Press, 1996, 1801 p.
  8. Erlande-Brandenbourg. The Cathedral: The Social and Architectural Dynamics of Construction. Cambridge Studies in the History of Architecture. Cambridge University Press, 2009, 382 p.
  9. Kotov V.I., Kunin Yu.S. Kompleksnoe obsledovanie pamyatnikov arkhitektury dlya razrabotki proekta restavratsii [Comprehensive Examination of Architectural Monuments with a View to Development of the Restoration Design]. Obsledovanie, ispytanie, monitoring i raschet stroitel’nykh konstruktsiy zdaniy i sooruzheniy [Examination, Testing, Monitoring and Analysis of Structural Units of Buildings and Structures]. 2010, MGSU Publ., pp. 93—96.
  10. Kotov V.I., Kunin Yu.S., Kotova E.V. Obsledovanie, vosstanovlenie, remont i usilenie svodov i arok zdaniy Novo-Ierusalimskogo monastyrya [Examination, Restoration, Renovation and Strengthening of Domes and Arches of Buildings of the New Jerusalem Monastery]. Obsledovanie, ispytanie, monitoring i raschet stroitel’nykh konstruktsiy zdaniy i sooruzheniy [Examination, Testing, Monitoring and Analysis of Structural Units of Buildings and Structures]. 2011, MGSU Publ., pp. 97—100.
  11. Fedotova L.A. Religioznyy turizm kak put’ vozrozhdeniya istoriko-kul’turnogo naslediya [Religious Tourism as the Way towards Revival of Historic and Cultural Legacy]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2012, no 9, pp. 41—42.

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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Study of interdependence between ductility factors and yield limits for steelsof standard strength grades

  • Gustov Yuriy Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Machinery, Machine Elements and Process Metallurgy, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (499) 183-94-95; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Allattouf Hassan Lattouf - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Mechanic Equip- ment, Details of Machines and Technology of Metals, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 22-26

Standard metal ductility factors are elongation and necking. These factors are defined as conditional ones in contrast to true (logarithmic) ductility factors. In addition, elongation and necking do not appear in an explicit form in the design formulas for the determination of static, cyclic or dynamic strength values.At the same time, exact values of ductility factors should be integrated into com-bined workability criteria for steels and alloys together with strength factors due to the unity of the processes of deformation and resistance to deformation. This combination of ductility factors and strength factors appears in a well-known formula describing dependence between the ultimate breaking strength and hardness.Here, the proportionality factor is equal to 0.3–0.6, and it is not characterized by the corresponding values of elongation or necking. Hence, the intention is to express the above-mentioned proportionality factor in a different form in respect of ductility characteristics, and, as a result, new ductility factors are proposed.Dependencies between ductility factors and yield limits, identified by the co-authors, may be applied to identify the synergetic criteria of metal materials to be used in the process of design, production and operation of welded metal structures. Moreover, the findings of the co-authors may be used in the process of design, production and operation of working elements of construction machines and equipment.

DOI: 10.22227/1997-0935.2013.7.22-26

References
  1. Gustov Yu.I., Gustov D.Yu., Voronina I.V. Sinergeticheskie kriterii metallicheskikh materialov [Synergetic Criteria of Metal Materials]. Doklady XV Rossiysko-slovatsko-pol’skogo seminara “Teoreticheskie osnova stroitel’stva” [Collected works of the 15th Russian-Slovak-Polish Seminar. Theoretical Fundamentals of Civil Engineering.] Warsaw, 2006, pp. 179—184.
  2. Gustov Yu.I., Allattouf H. Sinergeticheskie kriterii staley standartnykh kategoriy prochnosti [Synergetic Criteria of Steels Having Standard Grades of Strength]. Mekhanizatsiya stroitel’stva [Mechanization of Construction Operations]. 2013, no.2, pp. 24—27.
  3. Ivanova V.S., Balankin A.S., Bunin I.Zh., Oksogoev A.A. Sinergetika i fraktaly v materialovedenii [Synergy and Fractals in Material Science]. Moscow, Nauka Publ., 1994, 383 p.
  4. Skudnov V.A. Novye kompleksy razrusheniya sinergetiki dlya otsenki sostoyaniya staley [New Synergetics Destruction Facilities Used to Assess the State of Steels]. Materialovedenie i metallurgiya. Trudy NGTU [Material Science and Metallurgy. Works of Nizhny Novgorod State Technical University]. Nizhny Novgorod, NGTU Publ., 2003, vol. 38, pp. 155—159.
  5. Ivanova V.S. Sinergetika. Prochnost’ i razrushenie metallicheskikh materialov. [Synergetics. Strength and Destruction of Metal Materials]. Moscow, Nauka Publ., 1992, 155 p.
  6. Schulze W. Einf?rung in die Baustoffpr?fung. Berlin, VEB Verlag f?r Bauwessen, 1972.
  7. Tylkin M.A. Spravochnik termista remontnoy sluzhby [Reference Book for a Heat Treater of the Repair Service]. Moscow, Metallurgiya Publ., 1981, 648 p.
  8. GOST 8479—70. Pokovki i kovanye zagotovki. Kategorii prochnosti, normy mekhanicheskikh svoystv, opredelennye pri ispytaniyakh na prodol’nykh obraztsakh, i normy tverdosti [State Standard 8479—70. Forgings and blank forgings. Categories of strength, norms of mechanical properties identified in the course of testing longitudinal samples; hardness norms].
  9. Belov V.A., Gusev A.A., Shcherbina S.V. Modernizatsiya svarnykh soedineniy s flangovymi shvami pri izmenyaemoy tolshchine prikreplyaemogo elementa [Modernization of Welded Joints Having Fillet Welds If the Thickness of a Connected Element Is Variable]. Mekhanizatsiya stroitel’stva [Mechanization of Construction Operations]. 2013, no. 12, pp. 29—30.
  10. Tikhonov A.F., Grishin A.A. Analiz razvitiya metodov i mashin dlya razrabotki tyazhelykh i merzlykh gruntov [Analysis of Development of Methods and Machinery for Excavation of Heavy and Frozen Soils]. Mekhanizatsiya stroitel’stva [Mechanization of Construction Operations]. 2011, no. 8, pp. 28—30.

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Self-excited oscillations of a transversely isotropic plate, one edge of which is rigidly fixed and the other three edges are hinged, if the plate rests on thestrain foundation

  • Egorychev Oleg Aleksandrovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Professor, Department of Theoretical Mechanics and Aerodynamics; +7 (499) 183-24-01, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Stepanov Roman Nikolaevich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Theoretical Mechanics and Aerodynamics; +7 (499) 183-24-01, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zapol’nova Evgeniya Valer’evna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Theoretical Mechanics and Aerodynamics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 27-32

Today, an enormous number of research papers by foreign and domestic authors cover the research into vibration of plates. Despite this variety, oscillation of transversely isotropic plates remains understudied. The most substantial contribution into this area of research was made by S.A. Ambartsumyan, V.V. Bolotin, E.J. Brunelle, and M. Levinson. The author provides the summary of a frequency equation describing self-excited oscillations of a transversely isotropic plate resting on the strain foundation, if one edge of the plate is rigidly fixed and the other three edges are hinged. The problem was solved using the approximate method employed to derive the frequency equation needed to identify self-excited oscillations of the plate. The formulas, derived by the author and designated for the identification of frequencies of free transverse vibrations of the plate, are suitable for practical application; they may be applied for the identification of the nature of dependence between natural frequencies of the plate and its geometry.

DOI: 10.22227/1997-0935.2013.7.27-32

References
  1. Ambartsumyan S.A. Obshchaya teoriya anizotropnykh obolochek [General Theory of Anisotropic Shells]. Moscow, Nauka Publ., 1974, 446 p.
  2. Bolotin V.V. Sovremennye napravleniya v oblasti dinamiki plastin i obolochek. Kn. Teoriya plastin i obolochek [Modern Trends in Dynamics of Plates and Shells. In: Theory of Plates and Shells]. Kiev, Naukova Dumka Publ., 1962, pp. 16—32.
  3. Brunelle E.J. Buckling of Transversely Isotropic Mindlin Plates. AIAA Journal. 1971, 9, no. 6, pp. 1018—1022.
  4. Levinson M. Free Vibrations of a Simply Supported, Rectangular Plate: an Exact Elasticity Solution. Journal of Sound and Vibration. 22 January, 1985, no. 2, pp. 289—298.
  5. Egorychev O.A., Egorychev O.O., Zapol’nova E.V. Sobstvennye kolebaniya transversal’no-izotropnoy plastiny, lezhashchey na deformiruemom osnovanii, odin kray kotoroy uprugo zakreplen, a tri drugikh sharnirno operty [Self-excited Oscillations of a Transversely Isotropic Plate Resting on the Strained Foundation Bed, if One of the Plate Edges Is Flexibly Fixed, while the Three Other Edges Are Hinged]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 11, pp. 45—55.
  6. Filippov I.G., Cheban V.G. Matematicheskaya teoriya kolebaniy uprugikh i vyazkouprugikh plastin i sterzhney [Mathematical Theory of Vibrations of Elastic and Viscoelastic Plates and Rods]. Kishinev, Shtiintsa Publ., 1988. 190 ð.
  7. Egorychev O.O. Kolebaniya ploskikh elementov konstruktsiy [Vibrations of Flat Elements of Structures]. Moscow, ASV Publ., 2005, 239 p.

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Identification of pre-operation stresses and deformation of steel beams-ribsof composite floors

  • Zamaliev Farit Sakhapovich - Kazan State University of Architecture and Civil Engineering (KazGASU) Candidate of Technical Sciences, Associate Professor, Department of Metal Constructions and Testing of Structures; +7 (843) 510-47-09., Kazan State University of Architecture and Civil Engineering (KazGASU), 1 Zelenaya St., Kazan, 420043, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 33-39

Steel rib-reinforced beams are frequently used in the reconstruction of architectural monuments as a replacement for timber slabs. Insufficient amount of information about the stress-strain state of composite steel and concrete slabs limits their use in the domestic construction practice. The author describes the composition and geometric parameters of the structural solution. The author provides illustrations representing the reinforcement slab and anchors needed to track the behavior of composite concrete floors, the photographs featuring the voltage sensors attached to the shelves and the wall of a steel beam, the instrument used to measure the relative strain in the bottom of the beam. The technique employed by the author is used to track the dynamics of strains in the fiber discs, steel beams, and development of deflections. The author also describes the nature of stress on the top of the beam section. The experimental research has confirmed the assumption that the concrete setting time influences the stress-strain state of the steel beams as the basic elements of composite load-bearing floors. The author also provides the findings of the pilot studies.

DOI: 10.22227/1997-0935.2013.7.33-39

References
  1. Streletskiy N.N. Stalezhelezobetonnye proletnye stroeniya mostov [Composite Steel and Reinforced Concrete Span Structures of Bridges]. Moscow, Transport Publ., 1981, 360 p.
  2. Gibshman E.E. Teoriya i raschet predvaritel’no napryazhennykh zhelezobetonnykh mostov s uchetom dlitel’nykh deformatsiy [Theory and Analysis of Pre-stressed Reinforced Concrete Bridges with Account for Long-term Deformations]. Moscow, Transport Publ., 1966., 366 ð.
  3. Golyshev A.B., Polishchuk V.P., Kolpakov Yu.A. Raschet sborno-monolitnykh konstruktsiy s uchetom faktora vremeni [Analysis of Prefab Monolithic Structures with Account for the Time Factor]. Kiev, Budivilnik Publ., 1969, 220 p.
  4. Sattler K. Composite Construction in Theory and Practice. The Structural Engineer, 1961, vol. 39, no. 4, p. 163.
  5. Bresler, Boris. Reinforced Concrete Engineering. Materials, Structural Elements, Safety. Vol. 1, Tohu Wiley and Sons, pp. 236—241.
  6. Perekrytiya stalezhelezobetonnye s monolitnoy plitoy STO 0047 [Reinforced Concrete Floor with a Monolithic Slab. Standards of Organizations 0047]. Moscow, TsNIIPSK, 2005, 43 p.
  7. EN 1992-1-1: Eurocode 2: Design of Concrete Structures — Part 1.1. General Rules and Rules for Buildings. CEN, 2007, 224 p.
  8. Almazov V.O. Problemy ispol’zovaniya Åvrokodov v Rossii [Problems of Application of the Eurocodes in Russia]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2012, no. 7, pp. 36—38.
  9. Mirsayapov I.T., Zamaliev F.S., Shaymardanov R.I. Otsenka prochnosti normal’nykh secheniy stalezhelezobetonnykh izgibaemykh elementov pri odnokratnom staticheskom nagruzhenii [Assessment of Strength of Regular Sections of Composite Steel and Reinforced Concrete Elements in Bending If Exposed to Single-time Static Loading]. Sbornik statey RAASN [Collected Works of the Russian Academy of Architecture and Civil Engineering]. Nizhny Novgorod, NGASU Publ., 2001, pp. 247—250.
  10. Zamaliev F.S., Mirsayapov I.T. Raschet prochnosti stalezhelezobetonnykh izgibaemykh konstruktsiy na osnove analiticheskikh diagram [Strength Analysis of Composite Steel and Reinforced Concrete Structures in Bending on the Basis of Analytical Diagrams]. Razrabotka i issledovanie metallicheskikh i derevyannykh konstruktsiy. Sbornik nauchnykh trudov [Development of and Research into Metal and Timber Structures. Collection of Research Papers]. Kazan, KGASA Publ., 1999, pp. 142—149.

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Prefabricatedclosed type buildings having frames made of veneerwaste products

  • Inzhutov Ivan Semenovich - Siberian Federal University (SibFU) Doctor of Technical Sciences, Professor, Department of Building Structures and Control Systems, Director, Civil Engineering Institute, Siberian Federal University (SibFU), 79 pr. Svobodnyy, Krasnoyarsk, 660041, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Dmitriev Petr Andreevich - Institute of Civil Engineering, Siberian Federal University (SFU) Doctor of Technical Sciences, Professor, Department of Structural Units and Controlled Systems; +7 (391) 252-78-11, Institute of Civil Engineering, Siberian Federal University (SFU), .
  • Zhadanov Viktor Ivanovich - Orenburg State University” (OSU) Doctor of Technical Sciences, Professor, Chair, Department of Building Structures, Orenburg State University” (OSU), 13 prospekt Pobedy, Orenburg, 460018, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Deordiev Sergey Vladimirovich - Institute of Civil Engineering, Siberian Federal University (SFU) +7 (391) 252-78-64, Institute of Civil Engineering, Siberian Federal University (SFU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zakharyuta Vasiliy Viktorovich - Institute of Civil Engineering, Siberian Federal University (SFU) postgraduate student, Department of Structural Units and Controlled Systems, Institute of Civil Engineering, Siberian Federal University (SFU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 40-50

The major territory of Siberia is occupied by underexplored, hardly accessible areas having unstable or frozen soils. Development of these territories is hampered for a number of reasons, including poor weather and soil conditions, lack of infrastructure, roads, networks, and remoteness from industrial enterprises. Traditional building methods are rather expensive. The latter circumstance calls for new types of residential and public buildings, with the main requirement being their transportability (by air and land transport), higher degree of prefabrication (including foundations), light weight of structures, fast assembly, possibility of assembly and installation of large components without the use of heavy machinery, application of local materials, structural reliability, especially in the conditions of unstable soils. Construction operations on permafrost soils are not to alter the soil properties.The proposed structure of low-rise buildings is aimed at the attainment of the followings objectives: assimilation of hardly accessible areas of Siberia, development of low-rise housing, and secondary use of veneer waste products.A prefabricated building of the closed type consists of a foundation plate, as well as walls and coverings arranged in the form of a spatial framework united into a single manifold system. Beam elements of a prefabricated building are to be made of timber-based materials and assembled into a single bolted mountable and dismountable structure by means of a system of shaped metal node elements.Advantages of new low-rise buildings include their higher transportability due to the compactness of individual items and reduction of the overall weight, smaller construction term; increase in the building reliability on weak, unstable and frozen soils; expansion of the area of architectural design; development of a new method of recycling of large-size veneer waste products. The above features can make the new type of low-rise buildings highly competitive.

DOI: 10.22227/1997-0935.2013.7.40-50

References
  1. Abovskiy N.P. Stroitel’stvo v severnykh neftegazonosnykh rayonakh [Construction in Northern Oil and Gas Bearing Regions]. Krasnoyarsk, KrasGASA Publ., 2005, 228 p.
  2. OOO “TorgStroyMarket”. Sposoby utilizatsii otkhodov ot fanery [TorgStroyMarket Open Joint Stock Company. Methods of Recycling of Veneer Waste Products]. Available at: http://www.otdelka-servis.ru/fanera/fanerastat/sposobyothodov/index.html. Date of access: April 05, 2013.
  3. Yakunenko S.M., Vasil’ev A.I., Varik V.A. Avtorskoe svidetel’stvo 1647097 SSSR. Sborno-razbornaya rama [Authorship Certificate 1647097 USSR. Dismountable Frame].
  4. Nadelyaev V.D., Abovskaya S.N., Endzhievskiy L.V., Abovskiy N.P., Sergunicheva E.M., Egikyan N.B. Patent RF ¹ 2215852. Polnosbornoe zdanie ili sooruzhenie zamknutogo tipa, vklyuchayushchee fundament, dlya stroitel’stva na vechnomerzlykh, slabykh, puchinistykh gruntakh i v seysmicheskikh zonakh [RF Patent 2215852 RU. Prefabricated Building or Structure of the Closed Type, Including the Foundation, Designated for Construction on Permafrost, Loose, Heaving Soils and in Seismic Zones].
  5. Chilton J. Space Grid Structures. Plant a tree, Great Britain, 2000.
  6. Zhadanov V.I., Abovskiy N.P., Endzhievskiy L.V., Inzhutov I.S., Savchenkov V.I. Industrial'nye konstruktsii dlya stroitel'stva maloetazhnykh zdaniy i so-oruzeniy [Industial constructions for rerction of low-rise buildings and constructions]. Workbook. IPK GOU OGU, Orenburg, 2009. 416 p.
  7. ZERI Pavillion at EXPO 2000. Available at: http://bambus.rwth-aachen.de/eng/reports/zeri/englisch/referat-eng.html. Date of access: April 05, 2013.
  8. T.M. Obermann, R. Laude. Bamboo Poles for Spatial and Light Structures. Bamboo-Space Research Project - reference number: 166_OB Universidad Nacional de Colombia, Sede Medellin - Technische Universit?t Berlin, Germany.
  9. Inzhutov I.S., Dmitriev P.A., Deordiev S.V., Zakharyuta V.V. Zayavka na izobretenie ¹ 2012154719. Polnosbornoe zdanie zamknutogo tipa [Invention Application 2012154719. Prefabricated Building of the Closed Type].
  10. J. Natterer, T. Herzog, M. Volz. Atlante del Legno. Milan, 1999, pp. 94—97.
  11. Inzhutov I.S., Dmitriev P.A., Deordiev S.V., Zakharyuta V.V. Analiz sushchestvuyushchikh uzlov sopryazheniya prostranstvennykh konstruktsiy i razrabotka sborno-razbornogo uzlovogo elementa [Analysis of Available Space Structure Joints and Design of Demountable Modular Joints]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2013, no. 3, pp. 61—71.

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Analysis of strength of monolithic beamless floors using the limitequilibrium method

  • Kuznetsov Vitaliy Sergeevich - Mytishchi Branch, Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; +7 (495) 583-07-65; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Talyzova Yulia Aleksandrovna - Mytishchi Branch, Moscow State University of Civil Engineering (MGSU) Assistant Lecturer, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 51-58

The authors present features of the strength analysis of monolithic beamless floors, obtained using the limit equilibrium method. This method consists in the following procedure: a monolithic plate bends and breaks in the limit equilibrium under a uniformly distributed load. The influence of various combinations and dimensions of column sections on bending moments are considered. The influence of cross-sectional dimensions of columns on values of effective forces is analyzed in detail. The general equation to solve the strength problems of monolithic plates, having regular grids of columns exposed to continuous uniform loads, is derived and solved by the authors. This expression can be applied to calculate the span and support moments and to establish optimal reinforcement of plates. Results of calculations are presented in graphs that make it possible to derive interesting findings.

DOI: 10.22227/1997-0935.2013.7.51-58

References
  1. Timoshenko S.P., Voynovskiy-Kriger S. Plastinki i obolochki [Plates and Shells] Moscow, 1959, pp. 274—283.
  2. Nikonorov S.V., Tarasova O.A. Tekhnologiya rannego nagruzheniya monolitnykh perekrytiy pri ispol’zovanii balochno-stoechnoy opalubki [Technology of Early Loading of Monolithic Slabs Using Rack-girder Formwork]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2010, no. 4. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  3. Soudki Kh., El-Sayed A.K., Vanzwolc T. Strengthening of Concrete Slab-column Connections Using CFRP Strips. Journal of King Saud University Engineering Sciences. January 2012, vol. 24, no. 1, pp. 25—33. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  4. Zenunovica D., Folic R. Models for Behavior Analysis of Monolithic Wall and Precast or Monolithic Floor Slab Connections. Engineering Structures. July 2012, vol. 40, pp. 466—478. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  5. Dorfman A.E., Levontin L.N. Proektirovanie bezbalochnykh beskapitel’nykh perekrytiy [Design of Beamless Cap-free Floors]. Moscow, Stroyizdat Publ., 1975, pp. 11—22, 36—46.
  6. Shtaerman M.Ya., Ivyanskiy A.M. Bezbalochnye perekrytiya [Beamless Floors]. Moscow, 1953, pp. 47—64.
  7. Zolotkov A.S. Vibratsionnye ispytaniya fragmentov monolitnykh zdaniy do razrusheniya [Vibration Testing of Fragments of Monolithic Buildings to Fracture]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2012, no 1. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  8. Wieczorek M. Influence of Amount and Arrangement of Reinforcement on the Mechanism of Destruction of the Corner Part of a Slab-Column Structure. Proñedia Engineering. 2013, vol. 57, pp. 1260—1268. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  9. Malakhova A.N. Usilenie monolitnykh plit perekrytiy zdaniy stenovoy konstruktivnoy sistemy [Strengthening Monolithic Slabs of Buildings Having Wall Structural Systems]. Nauchno-prakticheskiy Internet zhurnal «Nauka. Stroitel’stvo. Obrazovanie» [Science and Practical Journal “Science, Construction, Education”]. 2012, no. 4. Available at: http://www.nso-journal.ru. Date of access: March 31, 2013.
  10. Pogrebnoy I.O., Kuznetsov V.D. Bezrigel’nyy predvaritel’no napryazhennyy karkas s ploskim perekrytiem [Beamless Pre-stressed Frame Having a Flat Slab]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2010, no 3. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  11. Samokhvalova E.O., Ivanov A.D. Styk kolonny s bezbalochnym beskapitel’nym perekrytiem v monolitnom zdanii [Juncture of a Column and Beamless Cap-free Floors in a Monolithic Building]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2009, no 3. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.

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Using wavelet analysisto obtain characteristics of accelerograms

  • Mkrtychev Oleg Vartanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, head, Scientific Laboratory of Reliability and Seismic Resistance of Structures, Professor, Department of Strength of Materials, Moscow State University of Civil Engineering (National Research University) (MGSU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Reshetov Andrey Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, engineer, Research Laboratory “Reliability and Earthquake Engineering”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 59-67

Application of accelerograms to the analysis of structures, exposed to seismic loads, and generation of synthetic accelerograms may only be implemented if their varied characteristics are available. The wavelet analysis may serve as a method for identification of the above characteristics. The wavelet analysis is an effective tool for identification of versatile regularities of signals. Wavelets can be used to detect inflection points, extremes, etc. Also, wavelets can be used to filter signals.The authors discuss particular theoretical principles of the wavelet analysis and the multiresolution analysis. The authors present formulas designated for the practical application. The authors implemented a wavelet transform in respect of a specific accelerogram.The recording of the horizontal component (N00E) of the Spitak earthquake (Armenia, 1988) was exposed to the analysis as an accelerogram. An accelerogram was considered as a non-stationary random process in the course of its decomposition into the envelope and the non-stationary part. This non-stationary random process was presented as a multiplication envelope of a stationary random process. Parameters of exposure of a construction site to the seismic impact can be used to synthesize accelerograms.

DOI: 10.22227/1997-0935.2013.7.59-67

References
  1. Blater K. Veyvlet-analiz. Osnovy teorii [Wavelet Analysis. Foundations of the Theory]. Moscow, Tekhnosfera Publ., 2007, 280 p.
  2. Percival D.B., Walden A.T. Wavelet Methods for Time Series Analysis. Cambridge University Press, 2000, 622 p.
  3. Dobeshi I. Desyat’ lektsiy po veyvletam [Ten Lectures on Wavelets]. Izhevsk, NITs «Regulyarnaya i khaoticheskaya dinamika» publ., 2001, 454 p.
  4. Addison P.S. The Illustrated Wavelet Transform Handbook. Institute of Physics, 2002, 358 p.
  5. Goswami J.C., Chan A.K., Fundamentals of Wavelets: Theory, Algorithms and Applications. John Wiley & Sons, Inc., 1999, 359 p.
  6. Chui C.K. Wavelets: A Mathematical Tool for Signal Analysis, SIAM. Philadelphia, 1997, 228 p.
  7. Mkrtychev O.V., Reshetov A.A. Primenenie veyvlet-preobrazovaniy pri analize akselerogramm [Application of Wavelet Transformations to the Analysis of Accelerograms]. International Journal for Computational Civil and Structural Engineering. 2011, vol. 7, no. 3, pp. 118—126.
  8. Mukherjee S., Gupta V.K. Wavelet-based Generation of Spectrum-compatible Time-histories. Soil Dynamics and Earthquake Engineering. 2002, vol. 22, no. 9-12, pp. 799—804.
  9. Bolotin V.V. Metody teorii veroyatnostey i teorii nadezhnosti v raschetakh sooruzheniy [Methods of the Theory of Probabilities and Theory of Reliability in Analysis of Structures]. Moscow, Stroyizdat Publ., 1982, 351 p.
  10. Bakalov V.P. Tsifrovoe modelirovanie sluchaynykh protsessov [Digital Modeling of Random Processes]. Moscow, MAI Publ., 2002, 88 p.

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Numerical methodfor solving dynamic problems of the theory of elasticity in the polar coordinate system similar to the finiteelement method

  • Nemchinov Vladimir Valentinovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Applied Mechanics and Mathematics, Mytischi Branch; +7 (495) 602-70-29, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospekt, Mytischi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Musayev Vyacheslav Kadyr ogly - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Consulting Professor, Mytischi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospekt, Mytischi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 68-76

The authors consider a dynamic problem solving procedure based on the theory of elasticity in the Cartesian coordinate system. This method consists in the development of the pattern of numerical solutions to dynamic elastic problems within any coordinate system and, in particular, in the polar coordinate system. Numerical solutions of dynamic problems within the theory of elasticity are the most accurate ones, if the boundaries of the areas under consideration coincide with the coordinate lines of the selected coordinate system.The first order linear system of differential equations is converted into an implicit difference scheme. The implicit scheme is transformed into the explicit method of numerical solutions. Using the Galerkin method, the authors obtain formulas for the calculation of both the points of the computational domain and the boundary points.Difference ratios similar to those obtained for a discrete rectangular grid and derived in this paper are suitable to design any geometry, which fact significantly increases the value of the methods considered in this paper.As a test case, the problem of diffraction of a longitudinal wave in a circular cavity, where maximum stresses are obtained analytically, was considered by the authors. The proposed method demonstrated sufficient accuracy of calculations and convergence of numerical solutions, depending on the size of discrete steps. The problem of diffraction of longitudinal waves in a circular cavity was taken for example; however, the proposed method is applicable to any problems within any computational domain.The polar coordinate system is the best one for any research into the diffraction of plane longitudinal waves in a circular cavity, since the boundaries of the computational domain coincide with the coordinate lines of the selected system.

DOI: 10.22227/1997-0935.2013.7.68-76

References
  1. Nemchinov V.B. Dvukhsloynaya raznostnaya skhema chislennogo resheniya ploskikh dinamicheskikh zadach teorii uprugosti [Bilayer Difference Scheme of a Numerical Solution to Two-Dimensional Dynamic Problems of Elasticity]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 8, pp. 104—111.
  2. Fletcher K. Chislennye metody na osnove metoda Galerkina [Numerical Methods Based on the Galerkin Method]. Moscow, Mir Publ., 1988, 352 p.
  3. Sekulovich M. Metod konechnykh elementov [Finite Element Method]. Moscow, Stroyizdat Publ., 1993, 664 p.
  4. Musaev V.K. Primenenie metoda konechnykh elementov k resheniyu ploskoy nestatsionarnoy dinamicheskoy zadachi teorii uprugosti [Application of the Finite Element Method to the Plane Non-stationary Dynamic Problem of the Theory of Elasticity]. Mekhanika tverdogo tela [Solid Body Mechanics]. 1980, no. 1, pp. 167—173.
  5. Sabodash P.F., Cherednichenko R.A. Primenenie metoda prostranstvennykh kharakteristik k resheniyu zadach o rasprostranenii voln v uprugoy polupolose [Application of Method of 3D Characteristics to Problems of Propagation of Waves in an Elastic Half-strip]. Izvestiya AN SSSP. Mekhan. tverdogo tela [News of the Academy of Sciences of the USSR. Solid Body Mechanics]. 1972, no. 6, pp. 180—185.
  6. Gernet Kh., Kruze-Paskal’ D. Neustanovivshayasya reaktsiya nakhodyashchegosya v uprugoy srede krugovogo tsilindra proizvol’noy tolshchiny na deystvie ploskoy volny rasshireniya [Unstable Response of an Arbitrary Thickness Circular Cylinder to the Action of a Plane Expansion Wave]. Prikladnaya mekhanika. Trudy amerikanskogo obshchestva inzhenerov-mekhanikov. Ser. E. [Applied Mechanics. Works of the American Society of Mechanical Engineers. Series E.] 1966, vol. 33, no. 3, pp. 48—60.
  7. Bayandin Yu.V., Naimark O.B., Uvarov S.V. Numerical Simulation of Spall Failure in Metals under Shock Compression. AIP Conf. Proc. of the American Physical Society. Topical Group on Shock Compression of Condensed Matter. Nashville, TN, 28 June — 3 July 2009, vol. 1195, pp. 1093—1096.
  8. Burago N.G., Zhuravlev A.B., Nikitin I.S. Models of Multiaxial Fatigue Fracture and Service Life Estimation of Structural Elements. Mechanics of Solids. 2011, vol. 46, no. 6, pp. 828—838.
  9. Li Y., Liu G.R., Zhang G.Y. An Adaptive NS/ES-FEM Approach for Plane Contact Problems Using Triangular Elements. Finite Elem. Anal. Dec. 2011, vol., 47, no. 3, pp. 256—275.

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Features of the effect of dynamic loading produced on the concrete behavior at different stages of deformation caused by uniaxialand biaxial compression

  • Tsvetkov Konstantin Aleksandrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Strength of Materials; +7 (499) 183-43-29, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mitrokhina Anastasiya Olegovna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Strength of Materials; +7 (499) 183-43-29, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 77-85

The authors examine the impact of dynamic loads produced on the strength and deformability properties of concretes and their micro-cracking. The experiment performed and analyzed by the authors consisted in the dynamic loading of a concrete sample that caused its destruction. The analysis of the experimental findings consisted in the identification of specific conditions of cracking, derivation of dependencies and compilation of charts. The following conclusions are made in furtherance of the authors’ analysis of the experiment in question:1) experimental findings help identify the nature of influence of the stress state on the strength value, deformability and micro-cracking of concretes. For example, it is discovered in the process of the experiments that the lower bound of the microracking dynamics increases more significantly than the prism strength.2) Regularities of influence of the rise in the loading intensity produced on concrete deformation properties are identified. The key factor of the concrete destruction is not the nature of the deformation, but the value of the overall strain.

DOI: 10.22227/1997-0935.2013.7.77-85

References
  1. Karpenko N.I. Obshchie modeli mekhaniki zhelezobetona [General Models of Reinforced Concrete Mechanics]. Moscow, Stroyizdat Publ., 1996.
  2. Tsvetkov K.A. Osnovnye rezul’taty eksperimental’no-teoreticheskikh issledovaniy prochnostnykh i deformativnykh svoystv betona pri dinamicheskom nagruzhenii v usloviyakh odnoosnogo i dvukhosnogo szhatiya [Principal Findings of Theoretical and Experimental Research into Strength and Deformability-related Properties of Concrete Exposed to Dynamic Loading in the Conditions of Uniaxial and Biaxial Compression]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2007, no. 3, pp. 109—120.
  3. Malashkin Yu.N., Ish V.G. Beton v dvukhosnom napryazhennom sostoyanii «rastyazhenie-szhatie» [Concrete in the Biaxial Stress State of “Tension-Compression”. In the book: Issledovanie monolitnosti i raboty betona massivnykh sooruzheniy [Research into Integrity and Behaviour of the Concrete of Massive Concrete Structures]. Moscow, MISI Publ., 1975, pp. 120—130.
  4. Bakirov R.O., Emyshev M.V., Maystrenko V.N. Vliyanie skorosti nagruzheniya na granitsy mikrotreshchinoobrazovaniya vysokoprochnykh betonov [Influence of Loading Rate onto Micro-cracking Bounds of High-strength Concretes]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 1982, no. 9, pp. 32—33.
  5. Rakhmanov V.A., Rozovskiy E.L. Vliyanie dinamicheskogo vozdeystviya na prochnostnye i deformativnye svoystva tyazhelogo betona [Influence of Dynamic Impacts on Strength and Deformability Properties of Heavy Concretes]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 1987, no. 7, pp. 19—20.
  6. Bazhenov Yu.M. Beton pri dinamicheskom nagruzhenii [Concrete Exposed to Dynamic Loading]. Moscow, Stroyizdat Publ.,1971, 271 p.
  7. Rykov G.V., Obledov V.P., Mayorov E.Yu., Abramkina V.T. Eksperimental’nye issledovaniya protsessov deformirovaniya i razrusheniya betonov pri intensivnykh dinamicheskikh nagruzkakh [Experimental Research into Processes of Deformation and Destruction of Concretes Exposed to Intensive Dynamic Loads]. Stroitel’naya mekhanika i raschet sooruzheniy [Structural Mechanics and Analysis of Structures]. 1989, no. 5, pp. 54—59.
  8. Ross C.A., Tedesco J.W., Kuennen S.T. Effects of Strain Rate on Concrete Strength. Materials Journal, January 1, 1995, pp. 37—47.
  9. Zielinski A.J. Concrete Structures under Impact Loading. Rate effects. Internal Report. Delft University of Technology, Faculty Civil Engineering and Geosciences, 1984, pp. 12—31.

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TECHNOLOGY OF CONSTRUCTION PROCEDURES. MECHANISMS AND EQUIPMENT

Technologies for sectional trenchless repair of water discharge pipelines

  • Orlov Vladimir Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Orlov Evgeniy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Аssociate Professor, Department of Water Supply; +7 (499)183-36-29, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zverev Pavel Vladimirovich - Moscow State University of Civil Engineering (MGSU) bachelor student, water supply and discharge major, Department of Water Supply; +7 (499)183-36-29., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 86-95

The article represents an overview and analysis of trenchless technologies used to provide for the leak resistance and strength of dilapidated sections of pipelines made of ceramics, cast iron, asbestos cement and other materials. Sectional pipeline repair technologies, considered by the authors, include those for the repair of loose joints of straight sections of pipelines and loose joints in the points of connection to secondary pipelines. Technologies analyzed by the authors also include those applied for the restoration of pipe shell cracks. Organic resins and bandages are to be used as repair materials.Besides, the authors provide detailed descriptions of the composition and properties of pumping resins injected into pipe cracks to restore the structural strength of pipelines and to assure their further reliable operation.Moreover, the authors assess the basic strengths of the bandage technology, including its low cost, low time consumption, and suitability to various types of pipeline damages (depressurization of joints, cracks, leaks, etc.). Besides, this method does not require any excavations, trenches, hoists or other machines.In particular, sections of underground pipelines, having diameters of 150 – 180 mm, may be repaired by specialized repair robots. Robots may be equipped with special-purpose devices, including cutter heads, bandage application heads, and color motion cameras. Besides, sectional repair of pipelines, having the diameter of up to 600 mm, may be performed using robots produced by Hachler Umwelttechnik, which are particularly efficient if the repair work is needed to be performed in the points of pipeline branching.The choice of specific pipeline repair methods and substantiation of their application are mainly driven by (1) the post-cleaning condition of a pipeline, (2) the findings of the telediagnostics, (3) options for arrangement and use of specialized machinery on location, and (4) feasibility of the pipeline operation in the course of repair works and procedures.

DOI: 10.22227/1997-0935.2013.7.86-95

References
  1. Infrastruktur fur die Zukunft. Weimar. Rohrbau-Kongress. 2008. p. 214.
  2. Khramenkov S.V. Strategiya modernizatsii vodoprovodnoy seti [Water Supply Network Modernization Strategy]. Moscow, Stroyizdat Publ., 2005, 398 p.
  3. Zwierzchowska A. Technologie beswykopowej budowy sieci gazowych, wodociagowych I kanalizacyjnych. Politechnika swietokrzyska. 2006. p. 180.
  4. Otstavnov A.A., Kchantaev I.S., Orlov E.V. K viboru trub dlia bestrancheynogo ustroystva truboprovodov vodosnabgenyia I vodootvedeniya [To the choice of pipes for trenchless device pipelines of water supply and sewerage]. Plasticheskie massy [Plastic masses]. 2007. Pp. 40—43.
  5. Khramenkov S.V., Primin O.G. Problemy i puti snizheniya poter’ vody [Problems and Method of Water Loss Reduction]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Engineering]. 2012, no. 11, pp. 10—14.
  6. Orlov V.A., Michaylin A.V., Orlov Å.V. Technologii bestranscheynoy renovazii truboprovodov [Technologies of trenchless renovation of pipelines]. Ìoscow, ASV Publ., 2011. 143 p.
  7. Burger J. Verfahren zur Sanierung bzw. Renovierung von Abwasserleitungen und kanalen [Patent of Germany N 19833885.6; Declared 28.07.1998; Published 03.02.2000].
  8. Janflen A. Importance of Lateral Structural Repair of Lateral Lines Simultaneously with Main Line CIPP Rehabilitation. NO-DIG 2012, Sao Paulo, Brasil.
  9. Pinguet J.-F., Meynardie G. Reseaux d’assainissement: du diagnostic a la rehabilitation. Eau, industry, nuisances. 2006., no. 295, pp. 39—43.
  10. Kuliczkowski A., Kuliczkowska E., Zwierzchowska A. Technologie beswykopowe w inzeynierii srodowiska. Wydawnictwo Seidel-Przywecki Sp. 2010, 735 p.

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Efficiency analysis of technologies applied in the course of selecting approaches to organization of constructionoperations and renovation of pipelines

  • Sapukhin Aleksandr Aleksandrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Hydraulics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kurochkina Valentina Aleksandrovna - 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation Candidate of Technical Sciences, Associate Professor, Department of Hydraulics and Water Resources, 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation, ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Novikov Sergey Olegovich - Moscow State University of Civil Engineering (MGSU) student, Institute of Construction and Architecture, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 96-105

The authors consider particular methods, technologies and organizational aspects that may be implemented in the construction and renovation of pipelines using polythene materials instead of metals due to their economic and practical efficiency. It is noteworthy that the corrosion problem of steel pipelines is the phenomenon of metal destruction that reduces the throughput of pipelines and facilitates obstructions, juncture cleavages and water leaks as a result of reduction of service lives of pipelines. The authors analyzed the efficiency of polythene pipes from the viewpoint of hydraulic processes and the economic expediency; the authors identified that the polythene pipe’s throughput is 3 times as much as the one of steel pipes. Also, the authors determined the economic efficiency of polythene pipes: USD 0.5 million per 1 kilometer of pipeline.The authors take account of the technology-related aspect, as the water pipeline construction and reconstruction processes are limited by dense urban environments or due to the absence of overhaul factories in the close proximity to pipelines. Therefore, the results of the analysis evidence the efficiency of application of polythene in construction and reconstruction of pipeline engineering systems. It is highly resistant to abrasion and corrosion; it boosts the water flow velocity due to the low rough-ness of the internal surface; its service life is long enough, and its transportation is problem-free.

DOI: 10.22227/1997-0935.2013.7.96-105

References
  1. Kurochkina V.A. Vliyanie vozdukha v truboprovode na velichinu gidravlicheskogo udara [Influence of Air inside Pipelines onto Water Hammer Intensity]. Stroitel’stvo — formirovanie sredy zhiznedeyatel’nosti : Sb. trudov IV Mezhdunar. mezhvuz. nauch.-prakt. konf. molodykh uchenykh, aspirantov i doktorantov. [Construction – Formation of the Environment. Collected works of the 4th International inter-university science and practice conference of young researchers, postgraduates and doctoral students]. Moscow, 2001, pp. 84—88.
  2. Sapukhin A.A., Pavlov E.I., Gergalov L.A. Opredelenie raskhodov v vodootvodyashchikh kollektorakh, rabotayushchikh v napornom rezhime [Identification of Consumption Rates in Sewage Reservoirs Operating in the Pressure Mode]. Stroitel’nye materialy, izdeliya i santekhnika [Construction Materials, Products and Sanitary Engineering]. Kiev, Budivel’nik Publ., 1987, no. 10, pp. 35—42.
  3. Khachaturov A.K., Rubashov A.M. Vodno-khimicheskiy rezhim sovmestnoy raboty sistemy oborotnogo okhlazhdeniya TETs i teploseti [Water Chemistry Mode of Joint Operation of the System of Reverse Cooling of TPPs and Heating Networks]. Ochistka prirodnykh i stochnykh vod. Sb. nauch. tr. [Treatment of Natural and Sewage Water. Collection of research works]. Moscow, 2009, pp. 20—24.
  4. Frenkel’ N.Z. Gidravlika. Ch. 1 [Hydraulics. Part 1]. Moscow – Leningrad, Gosenergizdat Publ., 1956, pp. 210—239.
  5. Krzys B. White Paper on Rehabilitation of Waste Water Collection and Water Distribution Systems. EPA, 2009, no. 9, pp. 24. Available at: http://nepis.epa.gov. Date of access: 17.04.13.
  6. Ginzburg Ya.N., Leznov B.S. Sovremennye metody regulirovaniya rezhimov raboty sistem vodosnabzheniya krupnykh gorodov [Contemporary Methods of Regulation of Modes of Operation of Water Supply Systems of Major Cities]. Vodosnabzhenie i sanitarnaya tekhnika. Sb. [Water Supply and Sanitary Engineering. Collected Works]. Moscow, GOSINTI Publ., 1976, pp. 51—62.
  7. Agachev V.I., Vinogradov D.A. Sostoyanie i perspektivy bestransheynogo metoda vosstanovleniya sistem vodosnabzheniya i vodootvedeniya [State of and Prospects for the Trenchless Method of Restoration of Water Supply and Discharge Systems]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Engineering]. 2003, no. 12, pp. 15—24.
  8. Kosygin A.B. Avariynyy remont vodoprovoda pri pomoshchi telerobotov [Emergency Repairs of Water Supply Pipelines Using Tele-operated Robots]. Vodosnabzhenie i sanitarnaya tekhnika [Water Supply and Sanitary Engineering]. 2000, no. 2, pp. 9—16.
  9. Khramenkov S.V. Tekhnologiya vosstanovleniya truboprovodov bestransheynymi metodami [Technology for Restoration of Pipelines Using Trenchless Methods]. Sb. statey i publikatsiy Moskovskogo Vodokanala [Collected articles and publications of Vodokanal - Moscow Water Services Company]. Moscow, 2004, pp. 236—251.
  10. Najafi M. Structural Evaluation of No-Dig Manhole Rehabilitation Technologies. Benjamin Media, 2013. Available at: http://www.trenchlessonline.com. Date of access: 17.04.13.

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RESEARCH OF BUILDING MATERIALS

Rice straw recycling problems

  • Gorbunov German Ivanovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Technology of Finishing and Insulation Materials, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Rasulov Olimdzhon Rakhmonberdievich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Technology of Finishing and Insulation Materials, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 106-113

The authors present a fairly extensive analysis of the state of the cereal crop industry in the Republic of Tajikistan and other regions of East and South-East Asia. Problems of generation of a huge amount of waste in the course of processing of cereals, in particular, rice straw processing by-products, are raised by the authors. The authors propose their original solution to the problems in question. Besides, traditional and original methods of application of rice straw in low-rise construction and production of building materials are presented in the article. The major part of the article covers traditional methods of disposal of rice straw as a raw material used in the production of cellulose, lignin biodegradable plastic, paper, cardboard, wicker products, thermal energy, etc. Another important issue, covered in the article, is the study of the straw/husk burning process, as well as the possibility of generating ash that contains various forms of silica. The fact that the ash content of the straw, according to various sources, varies within the range of16–20 %, and its silica content may be up to 89–91 % make it possible for the authors to state that straw and husk ash can be used as an active mineral additive in the production of effective building materials. It is noteworthy that the problems raised in the article are relevant, and their practical solutions are feasible.

DOI: 10.22227/1997-0935.2013.7.106-113

References
  1. Shchukin A.A. Eto ne skazka pro trekh porosyat [This Is Not a Fairytale about Three Little Pigs]. Ekspert [Expert]. 2012, no. 13(796). Available at: http://expert.ru/expert/2012/13/eto-ne-skazka-pro-treh-porosyat/ Date of access: 05.04.2013.
  2. Monsef Shokri R., Khripunov A.K., Baklagin Yu.C. Issledovanie komponentnogo sostava risovoy solomy IRI i svoystv poluchaemoy iz nee tsellyulozy [Research into the Composition of Rice Straw and Properties of the Cellulose Made of It]. Novye dostizheniya v khimii i khimicheskoy tekhnologii rastitel’nogo syr’ya : materialy III Vserossiyskoy konferentsii [New advances in chemistry and chemical engineering plant materials: Materials of III All-Russian Conference]. Barnaul, ASU Publ., 2007, pp. 53—55.
  3. Adylov D.K., Bekturdiev G.M., Yusupov F.M., Kim R.N. Tekhnologiya polucheniya modifitsirovannykh volokon iz otkhodov agropromyshlennogo kompleksa dlya ispol’zovaniya pri proizvodstve asbestotsementnykh izdeliy [Technology for Generation of Modified Fivers from Agricultural Waste Used in the Production of Asbestos-cement Products]. Materialy 8-y Mezhdunarodnoy konferentsii «Sotrudnichestvo dlya problemy otkhodov» [Presentation Materials. 8th International Conference “Cooperation in Waste Problems”. Khar’kov, February 23—24, 2011. Available at: http://waste.ua/cooperation/2011/theses/adylov.html. Date of access: 20.04.2013.
  4. Vurasko A.V., Minakov A.R., Gulemina N.N., Driker B.N. Fiziko-khimicheskie svoystva tsellyulozy, poluchennoy okislitel’no-organosol’ventnym sposobom iz rastitel’nogo syr’ya [Physicochemical Properties of Cellulose Generated from Plant Raw Materials Using Organo-solv Oxidation]. Materials of an Internet Conference. Available at: http://ftacademy.ru/science/internet-conference/index.php?c=1&a=66. Date of access: 15.04.2013.
  5. Vinogradov V.V., Vinogradova E.P. Sposob podgotovki risovoy shelukhi dlya polucheniya vysokochistogo dioksida kremniya [Method of Preparation of Rice Husk for the Generation of High-Purity Silicon Dioxide]. Patent Number: 2191158. Patent Class: S01V33/12. Application Number 2001113525/12 filed on 22.05.2001; publication dated 20.10.2002., Krasnodar.
  6. Dobrzhanskiy V.G. Zemnukhova L.A., Sergienko V.I. Sposob polucheniya vodorastvorimykh silikatov iz zoly risovoy shelukhi [Method of Generation of Water-soluble Silicates from Rice Husk Ash]. RF Patent no. 2106304 (Application no. 96118801 of 23.09.96).
  7. Skryabin A.A., Sidorov A.M., Puzyrev E.M., Shchurenko V.P. Sposob polucheniya dioksida kremniya i teplovoy energii iz kremniysoderzhashchikh rastitel’nykh otkhodov [Method of Generation of Silicon dioxide and Thermal energy from Siliceous Plant Waste]. Barnaul, AltGTU Publ., 2007.
  8. Rumyantsev B.M., Dang Shi Lan. Penozolobeton s aktivnym kremnezemom [Aerated Ash Concrete Containing Active Silica]. Stroitel’nye materialy i tekhnologii XXI veka [Construction Materials and Technologies of the 21st Century]. 2006, no. 6, pp. 38—39.

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Diethyldichloro-, ethyltrichlorosilanes in reactionswith cement stone minerals

  • Novosel’nov Anatoliy Aleksandrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Associate Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Myasoedov Evgeniy Mikhaylovich - Moscow State University of Mechanical Engineering (MAMI); Moscow State University of Civil Engineering (MGSU) Candidate of Chemical Sciences, Associate Professor, Department of General and Analytical Chemistry, Moscow State University of Mechanical Engineering (MAMI); Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), Moscow State University of Mechanical Engineering (MAMI); Moscow State University of Civil Engineering (MGSU), 38 Bol’shaya Semenovskaya str., Moscow, 107023, Russian Federation; 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sidorov Vyacheslav Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Chemical Sciences, Professor, Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 114-120

One of the uses of organosilicon compounds (OSCs) is associated with the production of hydrophobic coatings for building materials. Water-proofing properties of hydrophobic coatings extend the service life and improve the performance properties of building materials. Some of OSCs form hydrophobic polymer films on the surface of various building materials. High stability of these coatings is associated with the possible existence of chemical bonds between the polyorganosiloxane film and the hydrophilic surface of the material. Presently, there is no clear understanding of the mechanism of interaction between the mineral substrate and the film, although OSCs are widely used as part of water-proof building materials.Towards this end, the authors have identified the conditions that facilitate the formation of protective coatings on the surface of mineral substrates, if OSCs are applied to the surface of building materials. The authors have completed a research into the nature of interaction between the coatings and the mineral substrate to determine their physical and chemical properties. The silylation of calcium hydroxide by diethyldichloro-, ethyltrichlorosilanes was studied as the model process. The products of silylation were studied using methods of gas-liquid chromatography, infrared spectroscopy, electron mi- croscopy, X-ray diffraction and differential thermal analysis.The authors used the method of gas-liquid chromatography to discover that the periods of fast and slow conversion of silanes corresponded to the periods of domination of hydrolysis or hemosorbtion. The authors discovered that the hydrolysis products of diethyldichloro-, ethyltrichlorosilanes do not react with calcium hydroxide.The authors used the method of the thermal analysis to discover the physical and chemical properties of oligomers and polymers formed on the surface of the mineral substrate. Comparison of the findings of the thermal analysis of poliethylpolysiloxane in the mixture and in the block (312 °С) shows that there is practically no shift of the maximum exotherm. The following components of the hydrophobic effect of silylation where identified: formation of insoluble polyorganosiloxanes on the surface and inside the mineral stone accompanied by partial hemosorbtion, and physical adsorption of monomers, oligomers and polyorganosiloxanes - hydrolyzates on the mineral stone surface.

DOI: 10.22227/1997-0935.2013.7.114-120

References
  1. Fordham S. Silicones. George Newness Limited, London, 1960, p. 12.
  2. Noll W., Weissbach H. Zement-Kalk-Gips. Journal of American Chemical Society. 1966, vol. 9, p. 476.
  3. Pashchenko A.A., Voronkov M.G. Kremneorganicheskie zashchitnye pokrytiya [Organosilicon Protective Coatings]. Kiev, Tekhnika Publ., 1969, pp. 18—39.
  4. Sidorov V.I., Novosel’nov A.A., Myasoedov E.M. Issledovanie sililirovaniya gidroksida kal’tsiya metiltrikhlorsilanom [Study of Silylation of Calcium Hydroxide by Methyltrihlorosilane]. Vestnik MGSU [Proceeding of Moscow State University of Civil Engineering]. Moscow, 2010, vol. 3, no. 4, pp. 133—139.
  5. Sidorov V.I., Novosel’nov A.A., Myasoedov E.M. Sililirovanie mineral’nykh sostavlyayushchikh stroitel’nykh materialov [Silylation of Mineral Components of Building Materials]. Fundamental’nye nauki v sovremennom stroitel’stve. Sbornik dokladov. [Fundamental Sciences in Contemporary Civil Engineering. Collected Reports]. Moscow, MGSU Publ., 2001, pp. 108—116.
  6. Kiseleva A.V. Eksperimental’nye metody v adsorbtsii i molekulyarnoy khromatografii [Experimental Methods in Adsorption and Molecular Chromatography]. MGU Publ., Moscow, 1973, p. 580.
  7. Makhachek Z. Khimicheskaya promyshlennost’ [Chemical Industry]. Moscow, 1981, p. 10.
  8. Gorshkov V. S., Timashev V. V., Savel’ev V. G. Metody fiziko-khimicheskogo analiza vyazhushchikh veshchestv [Methods of Physicochemical Analysis of Binding Materials]. Moscow, Vysshaya shkola publ., 1981, p. 292.
  9. Bellami L. Infrakrasnye spektry slozhnykh molekul [Infrared Spectra of Complex Molecules]. Moscow, Nauka Publ, 1963, p. 592.
  10. Vesta V. Primenenie spektroskopii v khimii [Application of Spectroscopy in Chemistry]. Moscow, Nauka Publ., 1959, p. 659.

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Function of the demagnetization factor in respect of a quasi-solid filtermatrix of a magnetic separator

  • Sandulyak Anna Aleksandrovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Associate Professor, Department of Construction Materials; 7 (499) 183-32-29, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 121-130

The author presents the prospects for the use of a magnetic separator, equipped with a filter matrix, in the treatment of ceramic suspensions and minerals. Particles of ferromagnetic impurities are captured by matrix pores, when purified media is transmitted through the magnetized filter matrix. The particle capture efficiency depends on the level of the filter matrix magnetization. The intensity of demagnetization influences the filter matrix magnetization intensity. Unfortunately, many researchers frequently ignore the demagnetization factor of a filter matrix as a specific (granulated) magnet.The effect of self-demagnetization is studied in terms of homogeneous (solid) magnets. The effect of self-demagnetization means that poles emerge on the borders of magnetized “short” magnets. Thus, a strong inner demagnetization field emerges. The main parameter of this physical characteristic of sample-magnets is the coefficient of demagnetization, which relates the intensity of the demagnetization field and the magnetization intensity of a sample body. The author considers the relevant issue of influence of the demagnetization intensity on the average values of the magnetic permeability of porous (quasi-solid) magnets, for example, a filter matrix. This dependence is relevant for the calculation of magnetic permeability values.

DOI: 10.22227/1997-0935.2013.7.121-130

References
  1. Ivanov A.A. Srednee pole v opisanii magnitnoy struktury ul’tradispersnykh magnetikov [Mean Field in Description of the Magnetic Structure of Ultrafine Magnetic Materials]. Fizika metallov i metallovedenie [Physics of Metals and Metal Science]. 2007, vol. 104, no. 5, pp. 465—470.
  2. Ivanov A.A., Orlov V.A., Patrushev G.O. Svoystva effektivnoy anizotropii magnitnykh blokov v ul’tradispersnykh ferromagnetikakh [Properties of Effective Anisotropy of Magnetic Blocks of Ultrafine Ferrous Magnetic Materials]. Fizika metallov i metallovedenie [Physics of Metals and Metal Science]. 2007, vol. 103, no. 3, pp. 229—237.
  3. Meylikhov E.Z., Farzetdinova R.M. Obobshchennaya teoriya srednego polya dlya reshetochnykh magnitnykh sistem i ferromagnetizm poluprovodnikov s magnitnymi primesyami [Generalized Mean Field Theory for Latticed Magnetic Systems and Ferromagnetism of Semicondictors Having Magnetic Admixtures]. Fizika tverdogo tela [Solid State Physics]. 2005, vol. 47, no. 6, pp. 1085—1091.
  4. Trukhan S.N., Mart’yanov O.N., Yudanov V.F. Skachkoobraznoe namagnichivanie dispersnykh ferromagnetikov, obuslovlennoe magnitnymi mezhchastichnymi vzaimodeystviyami [Uneven Magnetization of Disperse Ferrous Magnetic Materials Caused by Magnetic Interparticle Interactions]. Fizika tverdogo tela [Solid State Physics]. 2008, vol. 50, no. 3, pp. 440—445.
  5. Komogortsev S.V., Iskhakov R.S. Krivaya namagnichivaniya i magnitnye korrelyatsii v nanotsepochke ferromagnitnykh zeren so sluchaynoy anizotropiey [Magnetization Curve and Magnetic Correlations of Ferrous Magentic Grains Having Random Anisotropy]. Fizika tverdogo tela [Solid State Physics]. 2005, vol. 47, no. 3, pp. 480—486.
  6. Bespyatykh Yu.I., Bugaev A.S., Dikshteyn I.E. Poverkhnostnye polyaritony v kompozitnykh sredakh s vremennoy dispersiey dielektricheskoy i magnitnoy pronitsaemostey [Surface Polaritons in Commposite Media Having Temporary Dispersion of Dielectric and Magnetic Permeability]. Fizika tverdogo tela [Solid State Physics]. 2001, vol. 43, no. 11, pp. 2043—2047.
  7. Meylikhov E.Z. Magnitnye svoystva granulyarnykh ferromagnetikov [Magnetic Properties of Granulated Ferrous Magnetic Materials]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 1999, vol. 116, no. 6(12), pp. 2182—2191.
  8. Meylikhov E.Z., Farzetdinova R.M. Reshetki nesfericheskikh ferromagnitnykh granul s magnitodipol’nym vzaimodeystviem – teoriya i eksperimental’nye primery [Lettices of Non-spherical Ferromagnetic Granules Demonstrating Magnetodipole Interaction: Theory and Experimental Examples]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2002, vol. 122, no. 5(11), pp. 1027—1043.
  9. Zubarev A.Yu. Reologicheskie svoystva polidispersnykh magnitnykh zhidkostey. Vliyanie tsepochechnykh agregatov [Rheological Properties of Polydisperse Magnetic Liquids. Influence of Chain Aggregates]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2001, vol. 120, no. 1(7), pp. 94—103.
  10. Meylikhov E.Z. Magnitnoe uporyadochenie v sluchaynoy sisteme tochechnykh izingovskikh dipoley [Magnetic Ordering in the Random System of Ising Point Dipoles]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2003, vol. 124, no. 3(9), pp. 650—655.
  11. Balagurov B.Ya., Kashin V.A. Strukturnye fluktuatsii polya i toka v zadache o provodimosti neodnorodnykh sred. Teoriya i chislennyy eksperiment [Structural Fluctuations of the Field and Current within the Framework of the Problem of Conductivity of Heterogeneous Media. Theory and Numerical Experiment]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2003, vol. 124, no. 5(11), pp. 1138—1148.
  12. Snarskiy A.A., Shamonin M.V., Zhenirovskiy M.I. Effektivnye svoystva makroskopicheski neodnorodnykh ferromagnitnykh kompozitov. Teoriya i chislennyy eksperiment [Effective Properties of Macroscopically Heterogeneous Ferromagnetic Composites. Theory and Numerical Experiment]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2003, vol. 123, no. 1, pp. 79—91.
  13. Frolov G.I. Magnitnye svoystva nanokristallicheskikh plenok 3d-metallov [Magnetic Properties of Nano-crystalline films of 3D Metals]. Zhurnal tekhnicheskoy fiziki [Journal of Applied Physics]. 2004, vol. 74, no. 7, pp. 102—109.
  14. Bakaev V.V., Snarskiy A.A., Shamonin M.V. Magnitnaya pronitsaemost’ i ostatochnaya namagnichennost’ dvukhfaznoy sluchayno neodnorodnoy sredy [Magnetic Permeability- and Residual Magnetism of Biphase Randomly Heterogeneous Media]. Zhurnal tekhnicheskoy fiziki [Journal of Applied Physics]. 2002, vol. 72, no. 1, pp. 129—131.
  15. Dovzhenko A.Yu., Zhirkov P.V. Vliyanie vida chastits na obrazovanie perkolyatsionnogo klastera [Particle Type Influence on Formation of Percolation Clusters]. Zhurnal tekhnicheskoy fiziki [Journal of Applied Physics]. 1995, vol. 65, no. 10, pp. 201—206.
  16. Meylikhov E.Z. Termoaktivnaya provodimost’ i vol’t-ampernaya kharakteristika dielektricheskoy fazy granulirovannykh metallov [Heating Conductivity and Current-voltage Characteristics of the Dielectric Phase of Granulated Metals]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 1999, vol. 115, no. 4, pp. 1484—1496.
  17. Lutsev L.V. Spinovye vozbuzhdeniya v granulirovannykh strukturakh s ferromagnitnymi nanochastitsami [Spine Impulses in Granulated Structures Having Ferromagnetic Nanosize Particles]. Fizika tverdogo tela [Solid State Physics]. 2002, vol. 44, no. 1, pp. 97—105.
  18. J.-L. Mattei, M. Le Floc’h. Percolative Behaviour and Demagnetizing Effects in Disordered Heterostructures. Journal of Magnetism and Magnetic Materials. 2003, no. 257, pp. 335—345.
  19. Gorkunov E.S., Zakharov V.A., Chulkina A.A. and Ul’yanov A.I. Internal Demagnetization Factor for Porous Ferromagnets in Remagnetization Process. Russian Journal of Non-destructive Testing. 2004, vol. 40, no. 1, pp. 1—7.
  20. Sandulyak A.V., Sandulyak A.A., Ershova V.A. Pory-«trubki» granulirovannoy sredy [Pipe-shaped Pores of the Granulated Media]. Khimicheskaya promyshlennost’ segodnya [Chemical Industry Today]. 2006, no, 1, pp. 44—50.
  21. Mozhaev A.P. Khaoticheskie gomogennye poristye sredy [Chaotic Homogeneous Porous Media]. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2001, vol. 74, no. 5, pp. 196—200.
  22. Sandulyak A.V., Sandulyak A.A., Ershova V.A. Funktsional’naya popravka v klassicheskoe vyrazhenie dlya sredney skorosti potoka v granulirovannoy, plotno upakovannoy srede [Functional Adjustment to the Classical Formulation of the Average Flow Velocity in the Granulated Close-packed Media]. Teoreticheskie osnovy khimicheskoy tekhnologii [Theoretical Fundamentals of the Chemical Technology]. 2008, vol. 42, no. 2, pp. 231—235.
  23. Kovenskiy G.I. Osobennosti dvizheniya tsirkuliruyushchego psevdoozhizhennogo sloya v krupnoob''emnoy sharovoy nasadke [Features of the Motion Pattern of the Circulating Pseudo-liquified Layer in the Large-volume Ball Nozzle]. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2004, vol. 77, no. 1, pp. 93—95.
  24. Teplitskiy Yu.S. O teploobmene v trube, zapolnennoy zernistym sloem [On Heat Exchange In the Pipe Filled by the Granulated Layer]. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2004, vol. 77, no. 1, pp. 86—92.
  25. Dik I.G., Purevzhav D., Kilimnik D.Yu. K teorii poristosti melkozernistykh sedimentov [To the Porosity Theory of Fine-grained Sediments]. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2004, vol. 77, no. 1, pp. 77—85.
  26. Mozhaev A.P. Khaoticheskie gomogennye poristye sredy. Teploobmen v yacheyke. [Chaotic Homogeneous Porous Media. Heat Exchange in the Cell.] Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2004, vol. 77, no. 1, pp. 69—76.
  27. Teplitskiy Yu.S. O teploobmene infil’truemogo zernistogo sloya s poverkhnost’yu [About Heat Echange between the Filtered Granulated Layer and the Surface]. Inzhenernofizicheskiy zhurnal [Journal of Engineering Physics]. 2003, vol. 76, no. 6, pp. 151—155.
  28. Beloborodov V.V. Energeticheskie kharakteristiki massoperenosa v tverdykh poristykh telakh [Energy Characteristics of the Mass Transfer in Solid Porous Bodies]. Inzhenerno-fizicheskiy zhurnal [Journal of Engineering Physics]. 2000, vol. 73, no. 2, pp. 283—287.
  29. Du-Xing Chen, Brug J.A., Goldfarb R.B. Demagnetizing Factors for Cylinders. IEEE Transactions on Magnetics. 1991, vol. 27, no. 4, pp. 3601—3619.
  30. Rostami Kh.R. Effektivnyy razmagnichivayushchiy faktor kvazimonokristallicheskikh i granulirovannykh tonkikh diskov [Effective Demagnetizing Factor for Thin Quazi-monocrystalline and Granulated Disks]. Zhurnal eksperimental’noy i teoreticheskoy fiziki [Journal of Experimental and Theoretical Physics]. 2005, vol. 128, no. 4 (10), pp. 760—767.
  31. Sandulyak A.A., Ershova V.A., Ershov D.V., Sandulyak A.V. O svoystvakh «korotkikh» granulirovannykh magnetikov s neuporyadochennymi tsepochkami granul: pole mezhdu granulami [About the Properties of “Short” Granulated Magnets Having Irregular Chains of Granules: the Field between the Granules]. Fizika tverdogo tela [Solid State Physics]. 2010, vol. 52, no.10, pp. 1967—1974.
  32. Sandulyak A.V., Sandulyak A.A., Ershova V.A. Razmagnichivayushchiy faktor granulirovannogo magnetika (fil’truyushchey matritsy) kak zhguta kanalov namagnichivaniya [Demagnetizing Factor of the Granulated Magnet (Filtering Matrix) as the Bunch of Magnetizing Channels.] Izvestiya MGTU «MAMI» [News of Moscow State Technical University “MAMI”]. 2011, no. 1(11), pp. 210—216.

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SAFETY OF BUILDING SYSTEMS. ECOLOGICAL PROBLEMS OF CONSTRUCTION PROJECTS. GEOECOLOGY

Engineering protection of pipelinesfrom erosion processes

  • Kul’kov Viktor Nikolaevich - Irkutsk State Technical University (IrGTU) Doctor of Technical Sciences, Professor, Department of Utility Lines and Life Support Systems; +7(3952) 405-142, Irkutsk State Technical University (IrGTU), 83 Lermontova st., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Solopanov Evgeniy Yur’evich - Irkutsk State Technical University (IrGTU) Candidate of Technical Sciences, Associate Professor, Department of Information Technologies; +7 (3952) 405-279, Irkutsk State Technical University (IrGTU), 83 Lermontova st., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sosna Viktor Mikhaylovich - Irkutsk State Technical University (IrGTU) postgraduate student, Department of Utility Lines and Life Support Systems; +7 (3952) 405-142., Irkutsk State Technical University (IrGTU), 83 Lermontova st., Irkutsk, 664074, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 131-139

The article presents the findings of the experimental studies of mechanical regeneration of the immobilized load using an electromechanical unbalanced vibrator. The sedimentation of the sludge on the synthetic load inside the physical model of a vertical bioreactor is studied. Mechanical regeneration of the immobilized sludge on the brush is proposed. The nature of dependence between the concentration of free-floating sludge and the deposition time following the mechanical regeneration is identified. The kinetics of the sludge deposition, the dose and intensity of aeration is studied, if the electric vibrator is used for the mechanical regeneration of the brush load. Thus, the application of the plane model of a bioreactor helped to determine that, if the water-sludge mixture has a small concentration of the free-floating sludge, the sedimentation is about 10 % of the total dose 30 seconds after the mechanical regeneration of the brush load. The effectiveness of the mechanical regeneration performed with the help of an electromechanical unbalanced vibrator was approximately 84–90 %. The application of the bioreactor having a synthetic brush load mechanism increases the concentration of the coagulated activated sludge.

DOI: 10.22227/1997-0935.2013.7.131-139

References
  1. Zhmur N.S. Tekhnologicheskie i biokhimicheskie protsessy ochistki stochnykh vod na sooruzheniyakh s aerotenkami [Technological and Biochemical Processes of Wastewater Treatment at Water Treatment Plants Having Aeration Tanks]. Moscow, ARVAROS, 2003, 512 p.
  2. Wiesmann U., Choi I.S., Dombrowski E.-M. Fundamentals of Biological Wastewater Treatment. Weinheim, 2007, 255 p.
  3. Springer A. Loading for the Immobilization of Microorganisms in the Biological Cleaning of Sewage Systems. Water and Waste Treat. 2007, 50, no. 2, pð. 22—23.
  4. Mahro Bernd. Denitrification Processes in Wastewater Treatment. KA – Abwasser, Abfall. 2006, 53, no. 9, pp. 916—919.
  5. Globa L.I., Gvozdyak P.I., Zagornaya N.B., Nikovskaya G.N., Fedorik S.M., Yablonskaya L.I. Ochistka prirodnoy vody gidrobiontami, zakreplennymi na voloknistykh nasadkakh [Using Hydrobionts Attached to Fibrous Nozzles to Treat Natural Water]. Khimiya i tekhnologiya vody [Chemistry and Technology of Water]. 1992, vol. 14, no. 1, pp. 63—67.
  6. Khorunzhiy V.P. Kinetika voskhodyashchego fil'trovaniya vody na ustanovkakh s voloknistopolistirol'nym zavantazhennyam [Kinetics of upward water filtering with fiber polystyrene loading]. Vestnik inzhenernoy akademii Ukrainy. 2004, no. 2, pp. 82—87.
  7. Omel’chenko N.P., Kovalenko L.I. Voloknistye nasadki dlya sistem ochistki vody [Fibrous Nozzles for Water Treatment Systems]. Problemy ekologii [Environmental Problems]. Donetsk, 2011, no. 1—2, pp. 12—17.
  8. Kulikov N.I., Raymanov A.Ya., Omel’chenko N.P., Chernyshov V.N. Teoreticheskie osnovy ochistki vody [Theoretical Fundamentals of Water Treatment]. Makeevka, DGASU, 2009, 298 p.
  9. Kul’kov V.N., Solopanov E.Yu. Poverkhnost’ kontakta faz v aerobnoy ochistke stochnykh vod [Phase-to-phase Contact Surface in the Aerobic Treatment of Wastewater]. Irkutsk, IrGTU Publ., 2009, 144 p.
  10. Kul’kov V.N., Sosna V.M., Zelenin A.M. Opredelenie kontsentratsii svobodno plavayushchego ila v bioreaktore [Determination of Concentration of Free-floating Sludge in the Bioreactor]. Voda Magazine [Water Magazine Journal]. Moscow, 2012, no. 3, pp. 44—46.

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Engineering protection of pipelinesfrom erosion processes

  • Skapintsev Aleksandr Evgen’evich - “Fundamentproekt” Open Joint Stock Company Team Leader, “Fundamentproekt” Open Joint Stock Company, 1 Volokolamskoe shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Potapov Aleksandr Dmitrievich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Chair, Department of Engineering Geology and Geo-ecology, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lavrusevich Andrey Alexandrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Geological and Mineralogical Sciences, Professor, Department of Engineering Geology and Geo-ecology; +7 (495) 500-84-26., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 140-151

The authors consider varied engineering actions aimed at the protection of pipelines from developing erosion processes with a focus on the conditions of northern regions. Engineering solutions, considered in the article, include prevention of erosion processes along pipelines, protection from suffusion, protection of extended areas having the limit value of the slope angle, and actions aimed at the drainage of areas along pipelines. Prevention of erosion processes along pipelines consists in the restoration of the fertile layer using biological methods, as well as the volumetric soil reinforcement using geological grids. Prevention of suffusion processes consists in the employment of various types of suffusion shields accompanied by the application of geotextile. Berms are constructed as suffusion prevention actions in extended areas having a limit value of the slope angle. This action is used to reduce the water flow energy of drainage ditches and trays along the pipeline. The authors believe that a complete geotechnical monitoring network must be designed and developed to monitor the condition of pipelines and foundation soils.

DOI: 10.22227/1997-0935.2013.7.140-151

References
  1. Ragozin A.L., editor. Prirodnye opasnosti Rossii [Natural Hazards of Russia]. Moscow, Kruk Publ., 2002 — 2003. 320 p.
  2. Golodkovskaya G.A. Printsipy inzh.-geol. tipizatsii mestorozhdeniy poleznykh iskopaemykh [Principles of Geo-engineering Typification of Mineral Deposits]. Voprosy inzhenernoy geologii i gruntovedeniya [Issues of Engineering Geology and Pedology]. 1983, no. 5, pp. 355—369.
  3. Gensiruk S.A. Ratsional'noe prirodopol'zovanie [Rational Nature Management]. Moscow, 1989. 310 p.
  4. ¹ RD 39-00147105-006—97. Instruktsiya po rekul'tivatsii zemel', narushennykh i zagryaznennykh pri avariynom i kapital'nom remonte nefteprovodov [N RD 39-00147105- 006—97. Instruction for Reclamation of Soils Disturbed by Emergency and Capital Repairs of Oil Pipelines]. Moscow, Transneft' Publ., 1997.
  5. SPA “Promkompozit” website. Available at: http://www.promcompozit.ru/cgi-bin/index.cgi?adm_act=strukture&num_edit=1035. Date of access: 25.05.2013.
  6. Private company “Vyrobnyche ob’jednannja Gabiony zahid Ukrai'na” website. Available at: http://www.zahid-gabions.cv.ua. Date of access: 23.05.2013.
  7. Sarsby R.W.Ed. Geosynthetics in Civil Engineering. Woodhead Publishing Ltd., Cambridge, England, 2007. 312 p.
  8. Jones K.D. Sooruzheniya iz armirovannogo grunta [Earth Reinforcement and Soil Structures]. Moscow, Stroyizdat Publ., 1989. 281 p.
  9. Dixon N., Smith D.M., Greenwood J.R. and Jones D.R.V. Geosynthetics: Protecting the Environment. Thomas Telford Publ., London, England, 2003. 176 p.
  10. LLC “Water Construction” website. Available at: http://vodbud.com/index.php?go=Content&id=15. Date of access: 25.05.2013.
  11. Waltham T., Bell T., Culshaw M. Sinkholes and Subsidence. Springer, Berlin, 2005. 300 p.
  12. Trofimov V.T., Voznesenskiy E.A., Korolev V.A. Inzhenernaya geologiya Rossii. T. 1. Grunty Rossii [Engineering Geology of Russia. Vol. 1. Soils of Russia]. Moscow, KDU Publ., 2011. 672 p.
  13. Istomina B.C. Fil'tratsionnaya ustoychivost' gruntov [Filtration Stability of Soils]. Moscow, 1957. 296 p.

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Identification of thermal comfort zone on residential premises in the dryhot climate of Central Asia

  • Usmonov Shukhrat Zaurovich - Khujand Politechnic Institute of Tajik Technical University by academic M. Osimi (PITTU); Moscow State University of Civil Engineering (MGSU) Senior Lecturer, Khujand Politechnic Institute of Tajik Technical University by academic M. Osimi (PITTU); Moscow State University of Civil Engineering (MGSU), 226 Lenina st., Khujand, 735700, Tajikistan; applicant, Department of Architecture of Civil and Industrial Buildings; 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 152-156

Comfort inside buildings is dependent on temperature, humidity and other parameters. Usually the higher the temperature and humidity, the more people feel discomfort. However, if the internal relative humidity is low, the inhabitant also feels uncomfortable as a result. Headache, eye irritation, sore throat and dry skin are the symptoms of these dry conditions. Dry air reduces natural protection from bacteria, infections, and makes people vulnerable to attacks of viruses and other micro-organisms. In addition to the problems associated with low humidity, excessively high humidity can also cause problems. The optimal level of humidity in the room contributes significantly to the comfortable environment. Chill may be perceived differently at the same temperature with different values of air humidity in the room. Comfort is determined by the ratio of room temperature to humidity. The temperature perceived inside and dependent on the moisture content, is measured by the Humidex index.European regulations define a desirable range of relative humidity and comfort. The humidity-dependent zone of comfort rests within this range. High temperatures are less tolerable in the high humidity environment. Modeling results obtained before and after the renovation and modernization of a five-story residential building (105 series) in Khujand, Tajikistan, helped to define the ideal parameters of relative humidity and comfort. The author proposes an ideal ratio of relative humidity to comfort and demonstrates that the optimum humidity and temperature values contribute significantly to the comfort of a person in the hot, dry climate of Central Asia.

DOI: 10.22227/1997-0935.2013.7.152-156

References
  1. Schmidt R., Dipl. Ing., Nicolaysen T. Precision or Comfort Air Conditioning? Hamburg, 2006, STULZ GmbH, 6 p.
  2. ASHRAE Handbook. Fundamentals. 2005, pp. 8—17.
  3. Fanger P.O. Thermal Comfort Analysis and Applications in Environmental Engineering. New York, 1970, McGraw Hill, 244 p.
  4. Fanger P.O. Thermal comfort. Malabar, Florida, Robert E. Crieger publ., 1982.

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HYDRAULICS. ENGINEERING HYDROLOGY. HYDRAULIC ENGINEERING

Monitoring the concrete-rock contact seam behavior fromthe upstream dam face to ensure the safety of Boguchany concrete dam

  • Vavilova Vera Konstantinovna - TsSGNEO Branch of JSC Institute Hydroproject named after S.Y. Zhuk +7 (495) 158-06-79, TsSGNEO Branch of JSC Institute Hydroproject named after S.Y. Zhuk, 2 Volokolamskoe shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Yur’ev Sergey Vladimirovich - JSC Institute Hydroproject named after S.Y. Zhuk Chief Design Engineer, JSC Institute Hydroproject named after S.Y. Zhuk, 2 Volokolamskoe shosse, Moscow, 125993, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 157-166

The authors argue that the attention of designers of concrete dams shall be focused on the concrete dam — rock foundation contact zone. The study of the exposure to the rock mass tensile strength in case of the concrete dam sliding is a relevant problem; its resolution may improve the operation of the whole hydraulic engineering structure. The method of selecting the dam safety criteria based on the field test data and laboratory reservoir impoundment observations is a relevant topic for discussion. If the strength margin value is in place, Russian regulations permit the tensile strength break along the concrete - rock contact line.The team led by Yu. A. Fishman and S.Yu. Roza has for a long time been researching into the problem of the limit state of rock foundations of concrete gravity dams. The study of the rock foundation failure, if exposed to horizontal and vertical loads, was also performed by VNIIG (Vedeneev All-Russian Scientific Research Institute of Hydraulic Engineering) and MGSU (Moscow State University of Civil Engineering). Both institutions have discovered that particular attention should be paid to the methodology of identification of shear strength parameters for the analysis of the first limit state to assess the reliability of the concrete dam foundation.The construction of Boguchany HPP plant is close to completion in the KrasnoyarskTerritory. The initial impoundment of the Boguchany reservoir was commenced in April,2012. According to the rock foundation monitoring data, it can be assumed that the behavior of the contact zone exposed to the shear load is in compliance with the pre-set parameters, and it needs further studies to accompany the water level rise. The foundation monitoring data collected in the course of the experiment will let the authors study the behavior of the Boguchany dam to verify the behavior of the dam-rock contact zone exposed to the real conditions of the reservoir impoundment.In the future, the results of these studies will make it possible to establish more precise criteria for the concrete-rock contact zone of the Boguchany dam project.

DOI: 10.22227/1997-0935.2013.7.157-166

References
  1. Kalustyan E.S. Geomekhanika v plotinostroenii [Geomechanics in Dam Engineering]. Moscow, Energoatomizdat Publ., 2013.
  2. Kalustian E.S et all. Restoration of Workability of “Old Dams.” Montreal, 2003, XXI ICOLD, Q. 82, p. 16.
  3. SP 23.13330.2011. Osnovaniya gidrotekhnicheskikh sooruzheniy [Construction Regulations 23.13330.2011. Rock Foundations of Hydraulic Structures.]. Moscow, 2011.
  4. SNiP 2.06.06—85. Plotiny betonnye i zhelezobetonnye. [Construction Norms and Regulations 2.06.06-85. Concrete and Reinforced Concrete Dams]. Moscow, 1996.
  5. Fishman Yu.A. Predel’nye sostoyaniya skal’nykh osnovaniy gravitatsionnykh i arochnykh plotin [Limit States of Rock Foundations of Gravity and Arch Dams]. Trudy Gidroproekta. Sbornik 150. Issledovaniya svoystv skal’nykh porod i massivov v gidrotekhnicheskom stroitel’stve. [Works of Hydroproject Insitute. Collection 150. Study of Properties of Rocks and Rock Massifs in Hydraulic Engineering]. Moscow, Hydroproject Publ., 1993, pp. 5—19.
  6. Lykoshin A.G., Fishman Yu.A., edit. Trudy Gidroproekta. Sbornik 33. Skal’nye osnovaniya gidrotekhnicheskikh sooruzheniy [Works of Hydroproject Institute. Collection 33. Rock Foundations of Hydraulic Engineering Structures]. Moscow, Hydroproject Publ., 1974, 191 p.
  7. Fishman Yu.A. Kriterii soprotivleniya sdvigu i ustoychivosti betonnykh sooruzheniy na skal’nom osnovanii [Criteria of Shearing and Stability Strength of Concrete Structures on Rock Foundations]. Gidrotekhnicheskoe stroitel’stvo [Hydraulic Engineering Construction]. 1984, no. 1, pp. 35—37.
  8. Roza S.A. O prirode soprotivleniya sdvigu opytnogo betonnogo shtampa [On the Nature of the Shearing Strength of the Pilot Concrete Stamp]. Gidrotekhnicheskoe stroitel’stvo [Hydraulic Engineering Construction]. 1966, no. 7, pp. 34—38.
  9. Otsenka sovremennogo sostoyaniya i svoystv prikontaktnoy zony osnovaniya betonnoy plotiny chislennymi raschetnymi po dannym naturnykh nablyudeniy. Etap 1, 2, 3 [Assessment of the Present-day State and Properties of the Concrete Dam - Rock Foundation Near-contact Zone Using the Numerical Analysis Based on the Field Observations. Stages 1, 2, 3.] Moscow, TsSGNEO Publ., 2011—2013, pp. 3—60.
  10. Patton F. Multiple Modes of Shear Failure in Rock. Lisbon, I Congress of the JSMR, 1966, vol. 1, pp. 509—513.
  11. Serafim F. Rock Mechanics Consideration in the Design of Concrete Dams. Conference on State of Stress in the Larch’s Crust. Santa Monica, California, USA, 1963, pp. 611—645.

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INFORMATION SYSTEMS AND LOGISTICS IN CIVIL ENGINEERING

Comprehensive analysis of the aerated concrete technology

  • Zhukov Aleksey Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Chugunkov Aleksandr Viktorovich - Moscow State University of Civil Engineering (MGSU) Director, Department of Examination of Buildings, postgraduate student, Department of Technology of Finishing and Insulation Materials, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Khimich Anastasiya Olegovna - Moscow State University of Civil Engineering (MGSU) student, Institute of Construction and Architecture, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Eremenko Nikita Andreevich - Moscow State University of Civil Engineering (MGSU) student, Institute of Economics, Management and Information Systems in Construction and Real Estate, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kopylov Nikita Andreevic - Moscow State University of Civil Engineering (MGSU) student, Institute of Economics, Management and Information Systems in Construction and Real Estate, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 167-175

The software package developed by Department of Technology of Finishing and Insulation Materials of Moscow State University of Civil Engineering is designated to improve the performance efficiency of experiments that consist in planning, implementation, and processing of findings of research projects, including solutions for their optimization. The software package assists researchers in planning and analyzing experimental findings that are influenced by versatile factors, especially if their number is different. The number of factors of impact may be set at 15, 30, 45, and 60. This software was tested in the context of the aerated concrete technology. The first stage of the research consists in the preparation for an experiment with account for all factors characterizing the manufacturing process. The software assesses the relevance of the above factors and ranks them on the basis of their significance. As a result, three groups of factors are identified: factors of major significance (Group A), factors of secondary significance (Group B) and other factors.The software package was applied in the context of the aerated concrete technology to determine the most important parameters of its production. As a result of the experiment, the group of most significant factors (group A) included foaming agent efficiency, foaming agent consumption rate, and mould filling degree, while less important factors (Group B) included modifier consumption rate, mixture temperature, exposure time and water consumption rate.

DOI: 10.22227/1997-0935.2013.7.167-175

References
  1. Dolotova R.G., Vereshchagin V.I., Smirenska V.N. Opredelenie sostavov yacheistykh betonov razlichnoy plotnosti pri ispol’zovanii polevoshpatovo-kvartsevykh peskov metodom matematicheskogo planirovaniya [Using Method of Mathematical Planning to Identify Compositions of Cellular Concretes Having Different Density Values and Containing Feldspar Sands]. Stroitel’nye materialy [Construction Materials]. 2012, no. 12, pp. 16—19.
  2. Zhukov A.D., Chugunkov A.V. Lokal’naya analiticheskaya optimizatsiya tekhnologicheskikh protsessov [Local Analytical Optimization of Manufacturing Processes]. Vestnik MGSU Proceedings of Moscow State University of Civil Engineering]. 2011, no. 1, pp. 273—279.
  3. Zhukov A.D., Chugunkov A.V., Gudkov P.K. Sistema fasadnoy izolyatsii na osnove betonov yacheistoy struktury [Fa?ade Insulation System Based on Cellular Structure Concretes]. Utility Model Patent no. 121834 of 06.07.2012, 6 p.
  4. Zhukov A.D., Chugunkov A.V., Rudnitskaya V.A. Zakonomernosti formirovaniya struktury materiala v usloviyakh variotropii davleniy [Regularities of Material Structure Formation under Variotropic Pressure Conditions]. Internet-Vestnik VolgGASU. 2012, no. 3. Available at: http://vestnik.vgasu.ru. Date of access: 05.02.2013.
  5. Loskutov A.B., Gossen Ya.Ya., Gorbacheva O.Yu. Sovershenstvovanie tekhnologii proizvodstva silikatnykh blokov na ZAO «Kombinat stroitel’nykh materialov» [Improvement of Production Technology of Silicate Blocks by “Kombinat stroitel›nykh materialov” closed Joint Stock Company]. Stroitel’nye materialy [Construction Materials]. 2013, no. 5, pp. 52—54.
  6. Sakharov G.P., Strebitskiy V.P., Voronin V.A. Novaya effektivnaya tekhnologiya neavtoklavnogo porobetona [New Effective Technology for Non-autoclaved Cellular Concrete]. Stroitel’nye materialy, obrudovanie i tekhnologii XXI veka [Construction Materials, Equipment and Technologies of the 21st Century]. 2002, no. 6, pp. 28—29.
  7. Perekhozhentsev A.G. Modelirovanie temperaturno-vlazhnostnykh protsessov v poristykh stroitel’nykh materialakh [Modeling of Temperature and Moisture Processes in Porous Construction Materials]. Part 6. Energeticheskiy potentsial vlazhnosti kapillyarno-poristykh materialov [Energy Potential of the Moisture Content of Capillary-porous Materials]. Stroitel’nye materialy [Construction Materials]. 2013, no. 5, pp. 90—91.
  8. Shmelev S.E. Puti vybora optimal’nogo nabora energosberegayushchikh meropriyatiy [Choice of the Optimal Set of Power-saving Actions]. Stroitel’nye materialy [Construction Materials]. 2013, no. 3, pp. 7—9.
  9. Verarbeitungsanleitung. Xella-Daemmsysteme GmbH, 2007, 47 p.
  10. Ytong Multipor Mineraldaemmplatte. Xella-Daemmsysteme GmbH, 2012, 24 p.
  11. Waermedamm-Verbundsystem. Xella GmbH, 2009, 53 p.

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Using WUFI®plus software to simulate energy arameters of buildings

  • Usmonov Shukhrat Zaurovich - Khujand Politechnic Institute of Tajik Technical University by academic M. Osimi (PITTU); Moscow State University of Civil Engineering (MGSU) Senior Lecturer, Khujand Politechnic Institute of Tajik Technical University by academic M. Osimi (PITTU); Moscow State University of Civil Engineering (MGSU), 226 Lenina st., Khujand, 735700, Tajikistan; applicant, Department of Architecture of Civil and Industrial Buildings; 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 176-180

The author explores the main principles of modeling the energy performance of residential buildings using WUFI®plus software. The author also assesses and analyzes images generated using WUFI+ software within the framework of the simulation of energy parameters of residential buildings. The article also has an experimental analysis of expensive and time-consuming factors that can be avoided thanks to the WUFI®plus software which allows for (1) easy and quick changes in the structure and its design, (2) input of different boundary conditions as well as (3) various values of parameters like material characteristics.

DOI: 10.22227/1997-0935.2013.7.176-180

References
  1. Fundamentals of WUFI®plus. Simultaneous Calculation of Transient Hygrothermal Conditions of Indoor Spaces and Building Envelopes. Holzkirchen, Fraunhofer-lnstitut f?r Bauphysik, 2008, 68 p.
  2. WUFI®plus: general information (October 10, 2010). Retrieved: February 19, 2011, from WUFI-Wiki.
  3. Building Energy Software Tools Directory. Available at: http://apps1.eere.energy.gov. Date of access: 15.06.13.

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PROBLEMS OF HIGHER EDUCATION IN CIVIL ENGINEERING

Exposure of civil engineers to hazardous and harmful occupational factors and methods of their countering

  • Bumarskova Natal’ya Nikolaevna - Moscow State University of Civil Engineering (MGSU) Candidate of Biological Sciences, Associate Professor, Department of Physical Training and Sports, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 181-186

Adaptation means accommodation of a living organism to constantly changing conditions external and internal environments. This capacity was developed in the process of the evolutionary development. Absent of this capacity, no human organism can leave normally or adjust to various external factors.In the contemporary research literature, adaptation is associated with different factors, including occupation, climate, social environment, etc. The process of adaptation is complex, and it contemplates different types of adaptation, namely, individual sociopsychological, communicative, and physiological adaptation. It is accompanied by substantial intellectual, mental and physical efforts.The variety of building structures coupled with process-related and organizational methods of their construction require attention to the issues of safety. In the course of life and work (working environment), a person is exposed to various hazards or phenomena, processes, and objects capable of damaging human health under certain conditions. An occupational hazard means an adverse impact on human health in the form of its deterioration or injury under certain conditions.The studies show that the three-shift working activity is the cause of fatigue. Fatigue boosts errors in the sensomotor coordination and deteriorates human health. The daily rhythm of physiological functions is driven by the intensity of the working activity causing changes in the body temperature, heart rate and blood pressure. Harmful factors, such as chlorine and chlorine dioxide, produce negative impact on the psycho-physiological status of the organism. They are countered by the system of adaptation and rehabilitation as an integral part of the university curriculum. Its objective is to enhance the effectiveness of professional activities, to ensure the optimal functioning of a human body exposed to heavy workloads and adverse external conditions.

DOI: 10.22227/1997-0935.2013.7.181-186

References
  1. At’kov O.Yu. Arterial’noe davlenie u rabotayushchikh s nochnymi smenami: sutochnye ritmy, urovni i ikh sezonnye razlichiya [Arterial Pressure of Employees Working Night Shifts: 24-hour Rhythms, Values and Seasonal Variations]. Fiziologiya cheloveka [Human Physiology]. 2012, vol. 38, no. 1, pp. 88—91.
  2. Kal’nish V.V., Shvets A.V. Vliyanie nepreryvnoy sutochnoy raboty na nadezhnost’ deyatel’nosti operatorov [Influence of Continuous 24-hour Work onto Reliability of Operators’ Work]. Fiziologiya cheloveka [Human Physiology]. 2012, vol. 38, no. 3, 81 p.
  3. Solonin Yu.G., Boyko E.R., Loginova T.P., Ketkina O.A. Dinamika fiziologicheskikh i psikhofiziologicheskikh pokazateley u operatorov pri trekhsmennoy rabote v razlichnykh usloviyakh truda [Dynamics of Physiological and Psycho-physiological Parameters Demonstrated by Operators Working Three Shifts under Various Working Conditions]. Fiziologiya cheloveka [Human Physiology]. 2011, no. 3, pp. 135—138.
  4. Soroko S.I. Individual’nye strategii adaptatsii cheloveka v ekstremal’nykh usloviyakh [Individual Human Adaptation Strategies in Case of Exposure to Extreme Conditions]. Fiziologiya cheloveka [Human Physiology]. 2012, vol. 38, no. 6, 78 p.
  5. Romain Barres, Jie Yan, Brendan Egan. Acute Exercise Remodels Promoter Methylation in Human Skeltal Muscule. Cell Metabolism. 2012, vol. 15(3), pp. 405—411.
  6. Milligan S.F., Hister J.A. Ancient Irish Hot Air Bath. OfIreland, IX, Dublin, 1980, 240 p.
  7. Solodkov A.S. Itogi i perspektivy issledovaniy problemy adaptatsii v sporte [Findings of and Prospects for Research into the Problem of Adaptation in Sports]. Uchenye zapiski universiteta imeni P.F. Lesgafta [Scholarly Notes of Lesgaft University]. 2005, no. 18, 65 p.
  8. Grutsyak N.B., Grutsyak V.I. Fizicheskaya kul’tura kak moshchnyy faktor, sposobstvuyushchiy adaptatsii inostrannykh studentov v vuze [Physical Education as the Strong Factor Facilitating Adaptability of International Students at Universities]. Fizicheskoe vospitanie studentov [Physical Training of Students]. 2010, no. 2, pp. 37—39.
  9. Arsen’ev D.G., Zinkovskiy A.V., Ivanova M.A. Sotsial’no-psikhologicheskie i fiziologicheskie problemy adaptatsii inostrannykh studentov [Socio-psychological and Physiological Problems of Adaptation of International Students]. St.Petersburg, 2003, 160 p.
  10. Konik G.A. Uchebnye zanyatiya po vidam sporta kak sredstvo formirovaniya motivatsii k zdorovomu obrazu zhizni u studentov vysshikh uchebnykh zavedeniy [Sports Classes as a Means of Formation of Motivation of University Students to Healthy Lifestyle]. Fizicheskoe vospitanie studentov tvorcheskikh spetsial’nostey [Physical Education of Students of Arts]. 2006, no. 4, pp. 108—114.

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