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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Simulation of structure interaction with the base in caseof earthquake

Vestnik MGSU 12/2013
  • 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 .
  • Dzhinchvelashvili Guram Avtandilovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Strength of 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 .
  • Busalova Marina Sergeevna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Strength of 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 34-40

The article focuses on the problem of calculating seismic impact on structures. The article studies the impact of structures on the changes in seismic load parameters. Studies are conducted with the use of direct dynamic calculation methods implementing explicit integration schemes equations of motion. Two computational models of monolithic reinforced concrete buildings on elastic half-space are considered: 9 and 16 storeys. The solution of the problem is found in time domain by direct integration of the equations of motion for the explicit scheme using software package LS-DYNA. The foundation simulation is performed using solid finite elements, and the bearing structures of buildings — using solid shell finite elements. The external action applied in the horizontal direction X is shown by accelerogram. Synthesized accelerogram is obtained by the Institute of Physics of the Earth of the Russian Academy of Sciences for Imereti lowland region, city of Sochi. In the study the authors used a specially developed method of calculation based on the algorithm of the base-structure interaction (interface soil-structure interaction). This algorithm can effectively simulate the interaction with linear and nonlinear deformable half-space in the form of a limited array with "transparent" borders. The results show that neglecting the change in external seismic impact parameters caused by the influence of the structures leads to errors in calculation results, which in turn can lead to deficiency of the bearing capacity and seismic resistance of building structures designed in seismic regions. When using the accepted methods of earthquake calculation based on existing regulations, the original design accelerograms should be set considering the dynamic characteristics of the designed buildings.

DOI: 10.22227/1997-0935.2013.12.34-40

References
  1. Mkrtychev O.V., Dzhinchvelashvili G.A. Raschet zhelezobetonnogo monolitnogo zdaniya na zemletryasenie v nelineynoy postanovke [Calculation of Reinforced Concrete Monolithic Building in Case of Earthquake in Nonlinear Formulation]. Sbornik dokladov Mezhdunarodnoy nauchno-metodicheskoy konferentsii, posvyashchennoy 100-letiyu so dnya rozhdeniya V.N. Baykova. Moskva, 4-5 aprelya 2012 goda [Collected Reports of the International Scientific Conference Dedicated to the 100th Anniversary of V.N. Baykov. Moscow, 4-5 April, 2012]. Moscow, 2012, pp. 283—289.
  2. Mkrtychev O.V., Dzhinchvelashvili G.A. Otsenka nelineynoy raboty zdaniy i sooruzheniy pri avariynykh vozdeystviyakh [Evaluation of Nonlinear Operation of Buildings and Structures in Emergency Exposures]. Problemy bezopasnosti rossiyskogo obshchestva [Security Problems of the Russian Society]. 2012, no. 3, pp. 17—31.
  3. Mkrtychev O.V. Otsenka nadezhnosti mnogoetazhnogo zdaniya pri seysmicheskom vozdeystvii na osnove resheniya dinamicheskoy zadachi [Evaluation of a Multi-storey Building Reliability under Seismic Impacts Basing on Dynamic Problem Solution]. Seysmostoykoe stroitel'stvo [Antiseismic Construction]. 2001, no. 2, pp. 33—35.
  4. Mkrtychev O.V. Raschet bol'sheproletnykh i vysotnykh sooruzheniy na ustoychivost' k progressiruyushchemu obrusheniyu pri seysmicheskikh i avariynykh vozdeystviyakh v nelineynoy dinamicheskoy postanovke [Calculation of Long-span and High-rise Buildings for Resistance to Progressive Collapse under Seismic and Emergency Impacts in Nonlinear Dynamic Formulation]. Sbornik dokladov nauchnogo seminara «Aktual'nye problemy rascheta zdaniy i sooruzheniy na osobye vozdeystviya (vklyuchaya seysmicheskie i avariynye)». 21 maya 2009 goda [Current Issues of the Analysis of Buildings and Structures in Case of Emergency Effects (Including Seismic and Accidental). Scientific Workshop. May 21, 2009]. Moscow, MGSU Publ., 2009, pp. 1—9.
  5. Herrera I., Bielak J. Soil-structure Interaction as a Diffraction Problem. Proceedings of the 6th World Conference on Earthquake Engineering. New Delhi, India, 1977, vol. 2, pp. 1467—1472.
  6. Bielak J., Loukakis K., Hisada Y., Yoshimura C. Domain Reduction Method for Threedimensional Earthquake Modeling in Localized Regions, Part I: Theory. Bulletin of the Seismological Society of America. 2003, vol. 93, no. 2, pp. 817—824.
  7. Yoshimura C., Bielak J., Hisada Y., Fernandez A. Domain Reduction Method for Threedimensional Earthquake Modeling in Localized Regions, Part II: Verification and Applications. Bulletin of the Seismological Society of America. 2003, vol. 93, no. 2, pp. 825—841.

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Calculation on displacements features of seismic isolated building

Vestnik MGSU 6/2014
  • 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 .
  • Bunov Artem Anatol'evich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Strength of 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 63-70

The article regards calculation of 16-storied building with seismic isolation in the form of elastomeric bearings on two-component accelerograms with different dominant frequencies. The problem was solved in software package LS-DYNA by forth integration of motion equations according to explicit scheme. The research showed the dependence of horizontal displacements of bearing top in relation to bottom at earthquakes given by accelerograms with different spectral structure. The article analyzes the results of the work.

DOI: 10.22227/1997-0935.2014.6.63-70

References
  1. Popova Zh.S., Pak Hyo Sun, Shishkina A.A., Lovtsov A.D. K seysmoizolyatsii mnogoetazhnogo zdaniya rezinometallicheskimi oporami [Multistoried Building Seismic Isolation by Rubber-Metal Supports]. Dal'niy vostok: problemy razvitiya arkhitekturno-stroitel'nogo kompleksa [Far East: Problems of the Development of Architectural and Construction Complex]. 2013, no. 1, pp. 223—228.
  2. Mkrtychev O.V., Bunov A.A. Sravnitel'nyy analiz reaktsiy mnogoetazhnykh zhelezobetonnykh zdaniy s sistemoy seysmoizolyatsii i bez nee na seysmicheskoe vozdeystvie [Comparative Analysis of Seismic Impact on Multystoried Ferro-Concrete Buildings with Seismic Isolation System and without it]. 21 vek: fundamental'naya nauka i tekhnologiya : Materialy III Mezhdunarodnoy nauchno-prakticheskoy konferentsii [The 21-st Century: Fundamental Science and Technology: Materials of the III International Science and Practical Conference]. Moscow, 2014, vol. 3, pp. 122—126.
  3. Murav'ev N.P. Sovremennyy metod seysmoizolyatsii zdaniy na primere RMO [Modern Methods of Seismic Isolation of Buildings by the Example of EBP]. Dal'niy vostok: problemy razvitiya arkhitekturno-stroitel'nogo kompleksa [Far East: Problems of Development of the Architectural and Construction Complex]. 2013, no. 1, pp. 212—218.
  4. Rumyantsev E.V., Belugina E.A. Modelirovanie konstruktsiy zheleznodorozhnogo terminala stantsii Adler s uchetom sistemy seysmoizolyatsii [Structural Modeling of Adler Railhead Considering Seismic Isolation]. Inzhenernostroitel'nyy zhurnal [Engineering Construction Journal]. 2012, no. 1 (27), pp. 22—30.
  5. Kharlanov V.L. Chislennoe issledovanie seysmoizolirovannykh sistem [Numeric Research of Seismic Isolation Systems]. Internet-vestnik VolgGASU. Seriya: Stroitel’naya informatika [Internet Reporter of Volgograd State University of Architecture and Civil Engineering. Series: Computer Science in Construction]. 2008, vol. 3 (6). Available at: http://www.vestnik.vgasu.ru. Date of Access: 20.03.2014.
  6. Ayzenberg Ya.M., Smirnov V.I., Akbiev R.T. Metodicheskie rekomendatsii po proektirovaniyu seysmoizolyatsii s primeneniem rezinometallicheskikh opor [Recommended Practice for Seismic Isolation Design with Elastomeric Bearings]. Moscow, RASS Publ., 2008, 46 p.
  7. Arutyunyan A.R. Sovremennye metody seysmoizolyatsii zdaniy i sooruzheniy [Modern Methods of Buildings and Constructions Seismic Isolation]. Inzhenerno-stroitel'nyy zhurnal [Engineering Construction Journal]. 2010, no. 3(13), pp. 56—60.
  8. Ormonbekov T.O., Begaliev U.T., Derov A.V., Maksimov G.A., Pozdnyakov S.G. Primenenie tonkosloynykh rezinometallicheskikh opor dlya seysmozashchity zdaniy v usloviyakh territorii Kyrgyzskoy Respubliki [The Use of Thin Layer Elastomeric Bearings for Seismic Protection in Kyrgyzstan]. Bishkek, Uchkun Publ., 2005, 215 p.
  9. Chen W.F., Scawthorn Ch., editor. Earthquake Engineering Handbook. Hawaii University, CRC Press LLC, 2003, 1450 p.
  10. Bathe K.J., Wilson E.L., Numerical Methods in Finite Element Analysis, Prentice-Hall, 1976.
  11. Hughes N.J.R., Rister K.S., Taylor R.L. Implicit-Explicit Finite Elements in Nonlinear Transient Analysis. Comp. Meth. Appl. Mech. Eng. 1979, no. 17—18, pp. 159—182. DOI: http://dx.doi.org/10.1016/0045-7825(79)90086-0.
  12. Mkrtychev O.V., Bunov A.A. Sravnitel'nyy analiz raboty seysmoizolyatsii zdaniy v vide rezinometallicheskikh opor na dvukhkomponentnuyu akselerogrammu [Comparative Analysis of Seismic Isolation of Buildings on Two-Component Accelerogram]. Nauka i obrazovanie v sovremennoj konkurentnoj srede: Materialy Mezhdunarodnoy nauchno-prakticheskoy konferentsii [Science and Education in Modern Competitive Environment: Materials of International Scientific and Practical Conference]. Ufa, RIO ICIPT Publ., 2014, vol. II, pp. 117—123.

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Calculation of a multistoried building on the intensive earthquake taking into account the possibility of foundation soil fluidifying

Vestnik MGSU 5/2014
  • 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 .
  • Busalova Marina Sergeevna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Strength of 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 63-69

In the article the problem of calculation of the multistoried building on soil with nonlinear properties is considered. As a foundation model the Mor-Coulomb model is applied. This model meets the following main requirements: it is capable to represent the mechanism of deformation of soil realistically; it contains parameters, which can be defined from standard laboratory researches; it has a sinmilarity and simplicity of use from the computing point of view. In the article the influence of fluidifying foundation soil at intensive seismic effect is investigated. In case of strong influences the behavior of soil becomes nonlinear, and the problem of assessing the response of soil becomes significantly complicated: the response depends as on the structure, power and water saturation of soil layers, and on magnitude and frequency structure of seismic influence. At such influences the rheological properties of soil, which is often connected with ground water movements, change. The changes of a phase condition of soil when soil is diluted are possible. As a result, seismic fluidifying of soil is usually accompanied by severe accidents even on aseismic constructions: buildings manage "to drown" or warp. There are even emissions of the diluted soil on a surface, which lead to formation of sandy craters. The catastrophic fluidifying of the water-saturated dusty and sand soil, which has caused victims and huge economic damage, happened at two strong earthquakes of 1964: on March 27 at a coast of Alaska near Anchorage with M = 8,4, and on June 16 in Niigata (Japan) with M = 7,5. Researches are conducted with the use of direct dynamic methods of calculation realizing obvious schemes of integration of the equations of movement.

DOI: 10.22227/1997-0935.2014.5.63-69

References
  1. Mkrtychev O.V., Dzhinchvelashvili G.A. Raschet zhelezobetonnogo monolitnogo zdaniya na zemletryasenie v nelineynoy postanovke [Calculation of Reinforced Concrete Monolithic Building on Earthquake in Nonlinear Formulation]. Sbornik dokladov Mezhdunarodnoy nauchno-metodicheskoy konferentsii, posvyashchennoy 100-letiyu so dnya rozhdeniya V.N. Baykova. Moskva, 4-5 aprelya 2012 g. [Collected Reports of the International Scientific Conference Dedicated to the 100th Anniversary of V.N. Baykov. Moscow, 4-5 April 2012]. Moscow, 2012, pp. 283—289.
  2. Mkrtychev O.V., Dzhinchvelashvili G.A. Otsenka nelineynoy raboty zdaniy i sooruzheniy pri avariynykh vozdeystviyakh [Evaluation of Nonlinear Operation of Buildings and Structures at Emergency Exposures]. Problemy bezopasnosti rossiyskogo obshchestva [Security Problems of the Russian Society]. 2012, no. 3, pp. 17—31.
  3. Mkrtychev O.V. Otsenka nadezhnosti mnogoetazhnogo zdaniya pri seysmicheskom vozdeystvii na osnove resheniya dinamicheskoy zadachi [Reliability Assesment of a Multistoried Building at Seismic Effect Basing on Dynamic Problem Solution]. Seysmostoykoe stroitel'stvo [Antiseismic Construction]. 2001, no. 2, pp. 33—35.
  4. Voznesenskiy E.A., Kushnareva E.S. Seysmicheskaya razzhizhaemost' gruntov. Inzhenernaya otsenka i klassifitsirovanie [Seismic Soil Liquefaction. Engineering Estimation and Classification]. Inzhenernaya geologiya [Engineering Geology]. 2012, no. 4, pp. 11—23.
  5. Tyapin A.G. Primer seysmicheskogo rascheta sistemy «sooruzhenie — osnovanie» dlya dvukhopornogo sooruzheniya [Example of Seismic Calculation of a System “Structure — Foundation” for Two-support Structure]. Seysmostoykoe stroitel'stvo. Bezopasnost' sooruzheniy [Antiseismic Construction. Safety of Structures]. 2012, no. 1, pp. 16—25.
  6. Strokova L.A. Opredelenie parametrov dlya chislennogo modelirovaniya povedeniya gruntov [Determination of the parameters for numerical simulation of soil behavior]. Izvestiya Tomskogo politekhnicheskogo universiteta [Bulletin of the Tomsk Polytechnic University]. 2008, no. 1, vol. 313, pp. 69—74.
  7. Pavlenko O.V. Uprugaya nelineynost' osadochnykh porod [Elastic Nonlinearity of Sedimentary Rocks]. Doklady akademii nauk [Reports of the Academy of Sciences]. 2003, vol. 389, no. 2, pp. 247—251.
  8. Pavlenko O.V. O nelineyno-uprugom povedenii gruntov pri sil'nykh zemletryaseniyakh [On Nonlinear-elastic Behavior of Soil at Intensive Earthquakes]. Nauka i tekhnologiya v Rossii [Science and Technology in Russia]. 2002, no. 7(58), 2003, no. 1(59), pp. 9—13.
  9. Konstantinova T.G. Razzhizhenie gruntov pri sil'nykh zemletryaseniyakh [Fluidifying of Soil at Strong Earthquakes]. Innovatsii v nauke: materialy XVIII Mezhdunarodnoy zaochnoy nauchno-prakticheskoy konferentsii [Innovations in Science: Materials of the 18th International Virtual Scientific and Practical Conference]. Novosibirsk, Sibak Publ., 2013. Available at: http://sibac.info/index.php/2009-07-01-10-21-16/7625-2013-04-30-09-06-50.
  10. Khavroshkin O.B., Tsyplakov V.V. Nelineynaya seysmologiya: nekotorye fundamental'nye i prikladnye problemy razvitiya [Nonlinear Seismology: Some Fundamental and Applied Problems of Development]. Fundamental'nye nauki — narodnomu khozyaystvu [Fundamental Sciences to National Economy]. Moscow, 1990, pp. 363—367.
  11. Basu U., Chopra A.K. Perfectly Matched Layers for Transient Elastodynamics of Unbounded Domains. International Journal for Numerical Methods in Engineering. 2004, vol. 59, no. 8, pp. 1039—1074. DOI: 10.1002/nme.896.
  12. Basu U. Explicit Finite Element Perfectly Matched Layer for Transient Three-dimensional Elastic Waves. International Journal for Numerical Methods in Engineering. 2009, vol. 77, no. 2, pp. 151—176. DOI: 10.1002/nme.2397.
  13. Herrera I., Bielak J. Soil-structure Interaction as a Diffraction Problem. Proceedings of the 6th World Conference on Earthquake Engineering. New Delhi, India, 1977, vol. 2, pp. 1467—1472.
  14. Bielak J., Loukakis K., Hisada Y., Yoshimura C. Domain Reduction Method for Threedimensional Earthquake Modeling in Localized Regions, Part I: Theory. Bulletin of the Seismological Society of America. 2003, vol. 93, no. 2, pp. 817—824. DOI: 10.1785/0120010251.
  15. Yoshimura C., Bielak J., Hisada Y., Fernandez A. Domain Reduction Method for Three-dimensional Earthquake Modeling in Localized Regions, Part II: Verification and Applications. Bulletin of the Seismological Society of America. 2003, vol. 93, no. 2, pp. 825—841. DOI: 10.1785/0120010252.

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