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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

IDENTIFICATION OF NATURAL FREQUENCIES OF MULTISTORIED BUILDINGS OF PERIODIC STRUCTURE

Vestnik MGSU 2/2012
  • Dashevskij Mihail Aronovich - VIBROSEJSMOZASCHITA Limited Liability Company (VIBROSEJSMOZASCHITA LLC) Doctor of Technical Sciences, Senior Researcher, Director of Technology 8 (495) 650-41-52, VIBROSEJSMOZASCHITA Limited Liability Company (VIBROSEJSMOZASCHITA LLC), Building 1, 20/2 Kominterna Str., Moscow, 129327, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mondrus Vladimir L'vovich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Head of Department of Structural Mechanics 8 (495) 287-49-14, ext. 3141, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shutovskij Stanislav Nikolaevich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Structural Mechanics 8 (495) 287-49-14, ext. 3141, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 35 - 40

Periodic two- and three-dimensional structural models designated for rectangular-plan buildings are considered in the article. Expressions for identification of natural frequencies designated for unloaded and loaded two-dimensional structural models, as well as non-free three-dimensional structural models of multistoried buildings are provided in the article.

DOI: 10.22227/1997-0935.2012.2.35 - 40

References
  1. Vol'fson B.P. O rasprostranenii voln v modeljah zdanij i sooruzhenij s vnutrennim treniem [On propagation of Waves in Models of Buildings and Structures That Feature Internal Friction]. Stroitel'naja mehanika i raschet sooruzhenij [Structural Mechanics and Analysis of Structures]. 1971, Issue # 5, pp. 105—112.
  2. Nikiforov A.F., Uvarov V.B. Special'nye funkcii matematicheskoj fiziki [Special Functions of Mathematical Physics]. Moscow, Intellect, 2007.
  3. Szeg? G. Ortogonal'nye mnogochleny [Orthogonal Polynomials]. Moscow, Gosudarstvennoe izdatel'stvo fiziko-matematicheskoj literatury [State Publishing House of Physical and Mathematical Literature], 1962.
  4. Brillouin L., Parodi M. Rasprostranenie voln v periodicheskih strukturah [Propagation of Waves in Periodic Structures]. Moscow, Inostrannaja literatura, 1959.
  5. Banakh L., Kempner M. Vibrations of Mechanical Systems with Regular Structure. Springer, 2010.
  6. Mead D. J. Wave Propagation in Continuous Periodic Structures: Research Contributions from Southampton, 1964—1995. Journal of Sound and Vibration (1996) 190(3), pp. 495—524.

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HARMONIC WAVE PROPAGATION UNDERNEATH LONG ONE-STORIED BUILDINGS

Vestnik MGSU 2/2012
  • Anohin Nikolaj Nikolaevich - Moscow State University of Civil Engineering (MSUCE) Candidate of Technical Sciences, Professor, Department of Structural Mechanics 8 (495) 287-49-14, ext. 3141, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia.
  • Dashevskij Mihail Aronovich - VIBROSEJSMOZASCHITA Limited Liability Company (VIBROSEJSMOZASCHITA LLC) Doctor of Technical Sciences, Senior Researcher, Director of Technology 8 (495) 650-41-52, VIBROSEJSMOZASCHITA Limited Liability Company (VIBROSEJSMOZASCHITA LLC), Building 1, 20/2 Kominterna Str., Moscow, 129327, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mondrus Vladimir L'vovich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Head of Department of Structural Mechanics 8 (495) 287-49-14, ext. 3141, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shutovskij Stanislav Nikolaevich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Structural Mechanics 8 (495) 287-49-14, ext. 3141, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 47 - 51

Periodic analysis models represented as networks of oscillators designated for long one-storied buildings are considered in the article. Expressions of natural frequencies and types of fluctuations are provided. Harmonic wave propagation underneath a long one-storied building is considered.

DOI: 10.22227/1997-0935.2012.2.47 - 51

References
  1. Brillouin L., Parodi M. Rasprostranenie voln v periodicheskih strukturah [Propagation of Waves in Periodic Structures]. Moscow, Inostrannaja literature, 1959.
  2. Vol'fson B.P. O rasprostranenii voln v modeljah zdanij i sooruzhenij s vnutrennim treniem [On propagation of Waves in Models of Buildings and Structures That Feature Internal Friction]. Stroitel'naja mehanika i raschet sooruzhenij [Structural Mechanics and Analysis of Structures]. 1971, Issue # 5, pp. 105—112.
  3. Dashevskij M.A. Svobodnye postupatel'no-vrawatel'nye kolebanija nesimmetrichnyh v plane sooruzhenij reguljarnoj struktury [Free Forward-Rotary Fluctuations of Asymmetrical Structures of Regular Pattern]. Works of CNIISK im. V.A. Kucherenko. 1975, Issue # 43, pp. 68—72.
  4. Nikiforov A.F., Uvarov V.B. Special'nye funkcii matematicheskoj fiziki [Special Functions of Mathematical Physics]. Moscow, Intellect, 2007.
  5. Szeg? G. Ortogonal'nye mnogochleny [Orthogonal Polynomials]. Moscow, Gosudarstvennoe izdatel'stvo fiziko-matematicheskoj literatury [State Publishing House of Physical and Mathematical Literature], 1962.

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ANALYSIS OF SUFFICIENCY OF THE BEARING CAPACITY OF BUILDING STRUCTURES OF OPERATING SITES OF MAIN BUILDINGS OF THERMAL POWER PLANTS

Vestnik MGSU 3/2012
  • Alekseeva Ekaterina Leonidovna - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 25 - 29

Upon examination of eleven main buildings of power plants, analysis of defects and damages of building structures was performed. Thereafter, the damageability of principal bearing structures of main buildings of thermal plants was analyzed. It was identified that the fastest growing defects and damages were concentrated in the structures of operating sites. The research of the rate of development of the most frequent damages and defects made it possible to conclude that internal corrosion of the reinforcing steel was the most dangerous defect, as far as the reinforced concrete elements of operating sites were concerned. Methods of mathematical statistics were applied to identify the reinforcing steel development pattern inside reinforced concrete elements of floors of operating sites. It was identified that the probability of corrosion of reinforced concrete elements of operating sites was distributed in accordance with the demonstrative law. Based on these data, calculation of strength of reinforced concrete slabs and metal beams was performed in terms of their regular sections, given the natural loads and the realistic condition of structures. As a result, dependence between the bearing capacity reserve ratio and the corrosion development pattern was identified for reinforced concrete slabs and metal beams of operating sites. In order to analyze the sufficiency of the bearing capacity of building structures of operating sites in relation to their time in commission, equations were derived to identify the nature of dependence between the sufficiency of the bearing capacity of reinforced concrete slabs and metal beams of the operating sites and their time in commission.

DOI: 10.22227/1997-0935.2012.3.25 - 29

References
  1. Dobromyslov A.N. Diagnostika povrezhdeniy zdaniy i inzhenernykh sooruzheniy [Damage Diagnostics of Buildings and Engineering Structures]. Moscow, MSUCE, 2008.
  2. Kuznetsov I.P., Ioffe Y.R. Proektirovanie i stroitel’stvo teplovykh elektrostantsiy [Project Design and Construction of Heat Power Plants]. 3rd revised edition, Moscow, Energoatomizdat Publ., 1985.
  3. Kuznecov I.P., Ioffe Ju.R. Rukovodstvo po ekspluatatsii stroitel’nykh konstruktsiy proizvodstvennykh zdaniy promyshlennykh predpriyatiy [Guidelines for Operation of Building Structures of Production Buildings of Industrial Enterprises]. 4th reprint edition, Moscow, 2004.

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ANALYSIS OF BIOCONTAMINATIONS OF AIR ENVIRONMENT IN CLEAN ROOMS AND ESTIMATION OF RISKS OF THEIR CONTAMINATION

Vestnik MGSU 8/2017 Volume 12
  • Galai Vladimir Sergeevich - Donbas National Academy of Civil Engineering and Architecture (DonNASA) student, Department of Gas-Supplyings and Ventilation, Donbas National Academy of Civil Engineering and Architecture (DonNASA), 2 Derzhavin st., Makеyеvka, Donetsk People’s Republic, 286123.

Pages 912-916

In connection with increasing demand for providing quality medical services, the technologies and systems for safe work of personnel began actively developing in the world. Unfortunately, at the present day, physicians have to deal with the microorganisms of different danger level, therefore, for the purpose of safety of personnel and patients, the detailed analysis of air environment is needed as there can be a risk of introduction of infection for people. Currently, incidence rate conditioned by microbiological contamination of air environment of rooms remains at a high level. Prevention of disease dissemination is a basic task of the process of air discontamination. Air contamination provides the decrease of incidence of contagious diseases and complements the obligatory compliance with existing sanitary norms and rules for space planning, furnishing and maintenance, primarily medical and preventive ones. One of the ways of contagious diseases dissemination is aerogenous (respiratory), related to the main method of transmission of respiratory diseases, such as influenza virus infection, tuberculosis. It is related to the fact that airborne bacterial aerosol is constantly suspended in the air volume of rooms due to air motion (convections), that increases contamination rate.

DOI: 10.22227/1997-0935.2017.8.912-916

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AUTOMATED DESIGN AND STRENGTH ANALYSIS OF SINGLE-CONTOUR GEODETIC SHELLS COMPOSED OF FLAT ELEMENTS

Vestnik MGSU 8/2012
  • Suprun Anatoliy Nikolaevich - Nizhegorodskiy State University of Architecture and Civil Engineering Doctor of Physical and Mathematical Sciences, Professor, Chair, Department of Information Systems and Technologies 8 (831) 4 30-54-92, Nizhegorodskiy State University of Architecture and Civil Engineering, 65 Nizhniy Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Dyskin Lev Matveevich - Nizhegorodskiy State University of Architecture and Civil Engineering ( Doctor of Technical Sciences, Professor, Department of Heating and Ventilation 8 (831) 430-54-86, Nizhegorodskiy State University of Architecture and Civil Engineering (, 65 Nizhniy Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Platov Aleksandr Yurevich - Nizhegorodskiy State University of Architecture and Civil Engineering Doctor of Technical Sciences, Associated Professor, Department of Information Systems in the Economy 8 (831) 437-07-28, Nizhegorodskiy State University of Architecture and Civil Engineering, 65 Nizhniy Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lakhov Andrey Yakovlevich - Nizhegorodskiy State University of Architecture and Civil Engineering Candidate of Technical Sciences, Associated Professor, Department of Informational Systems and Technologies 8 (831) 430-54- 92, Nizhegorodskiy State University of Architecture and Civil Engineering, 65 Nizhniy Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 226 - 233

The article is a brief review of the research of the stress-deformation state of a structure
that represents a hemispherical geodetic dome exposed to the dead load. Single-contour geodetic
domes composed of flat plates are the subject of the research. The process of their design has two
stages: (a) design of geometric models of geodetic domes and (b) analysis of domes.
The authors demonstrate that the first stage can be implemented through the employment of
the library of ArchiCAD objects. Supplementary research is needed to have the second stage implemented.
The objective of this research is to present the results of the research using computer-aided
methods of modeling of metal structures. The analysis of smooth hemispherical domes is performed
using analytical and finite-element methods within the Patran/Nastran environment. The authors
demonstrate that the results of the finite-element method analysis converge with the results of the
analytical method analysis.
Conversion of geometric models of geodetic domes into the format that satisfies Patran preprocessor
requires the employment of the Visual Basic software. Ultimately, comparison between
the results obtained in respect of the geodetic dome and the analytical results obtained in respect
of the smooth dome exposed to the dead load is performed. The conclusion is that the maximal
stress experienced by a single-contour geodetic dome, in the event of reduction of sizes of plates,
converges with the maximal stress of similar smooth domes.

DOI: 10.22227/1997-0935.2012.8.226 - 233

References
  1. Tupolev M.S. Novye arkhitekturnye tipy svodov i kupolov dlya massovogo stroitel’stva [New Architectural Types of Vaults and Domes for Large-scale Construction]. Мoscow, 1951.
  2. Fuller R.B. Geodesic Dome. Perspecta Publ., 1952, no. 1, pp. 30—33.
  3. Pavlov G.N., Suprun A.N. Avtomatizatsiya arkhitekturnogo proektirovaniya geodezicheskikh kupolov i obolochek [Automation of Architectural Design of Geodetic Domes and Envelopes]. Nizhniy Novgorod, NNGASU Publ., 2006, 162 p.
  4. Suprun A.N., Pavlov G.N., Lakhov A.Ya., Tkachenko A.K. Avtomatizatsiya arkhitekturnogo proektirovaniya i prochnostnogo rascheta geodezicheskikh obolochek [Automation of Architectural Design and Strength Analysis of Geodetic Domes]. Privolzhskiy nauchnyy zhurnal [Privolzhskiy Scientific Journal]. Nizhniy Novgorod, NNGASU Publ., 2008, № 23(7), pp. 15—19.
  5. Lakhov A.Ya., Suprun A.N. SVN — trekhmernye grafi cheskie interfeysy na osnove DirectX i VC# dlya vizualizatsii rezul’tatov raschetov bezopasnosti stroitel’nykh konstruktsiy [SVN — Three-dimensional Graphic Interfaces on the Basis of DirectX and VC # for Visualization of Results of Analysis of Safety of Building Structures]. Privolzhskiy nauchnyy zhurnal [Privolzhskiy Scientific Journal]. Nizhniy Novgorod, NNGASU Publ., 2010, no. 2, pp. 10—15.
  6. Lakhov A.Ya. Raschet dvukhkonturnykh geodezicheskikh kupolov sistemy «P» metodom konechnykh elementov v sisteme Patran/Nastran [Analysis of Dual-contour Geodetic Domes of P-System Using Method of Finite elements within the Patran/Nastran System]. Informatsionnaya sreda vuza [Information Medium of an Institution of Higher Education]. Proceedings of the 17th Scientific and Technical Conference. IGASU Publ., 2010, pp. 121—125.
  7. Lakhov A.Ya. Translyator geometricheskikh modeley odnokonturnykh geodezicheskikh obolochek ArchiCAD — Patran [ArchiCAD — Patran Translator of Geometric Models of Single-contour Geodetic Domes]. Proceedings of KOGRAF 2012 Scientific and Technical Conference. Nizhniy Novgorod, 2012, pp. 155—159.
  8. Karpov Yu.G. Teoriya i tekhnologiya programmirovaniya. Osnovy postroeniya translyatorov. [Theory and Technology of Programming. Basics of Constructing of Translators]. St.Petersburg, BHV-Peterburg Publ., 2005, 272 p.
  9. Vinogradov G.G. Raschet stroitel’nykh prostranstvennykh konstruktsiy. [Analysis of Spacial Structures]. Moscow, Stroyizdat Publ., 1990, 264 p.
  10. Shimkovich D.G. Raschet konstruktsiy v MSC.visualNastran for Windows [Analysis of Structures in MSC.visualNastran for Windows]. Moscow, DMK Press Publ., 2004, 704 p.
  11. Ohmori H., Yamamoto K. Shape Optimization of Shell and Spatial Structure for Specifi ed Stress Distribution. Memoires of the School of Engineering, Nagoya University, vol. 50, no. 1(1998), pp. 1—32.
  12. Loganathan S., Morgan R.C. Snap-through Buckling Analysis of Shallow Geodesic Dome Using MSC/Nastran. The Fifth Australian MSC Users Conference, Sydney, Australia, November, 1991.
  13. Anders M., Harte R. Buckling of Concrete Shells: a Simplifi ed Numerical Approach. Journal of the International Association for Shell and Spatial Structures. IASS Publ., vol. 47(2006), no. 3.

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