The reaction of the building structure with window unit to the explosiveimpact on the basis of dynamic equation solution

Vestnik MGSU 1/2014
  • Doronin Fedor Leonidovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Hydraulics and Water Resources, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Moscow, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Truchanova Lyudmila Nikolaevna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Pro- fessor, Department of Physics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Moscow, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Fomina Marina Vasilyevna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Physics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Moscow, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 33-40

When designing residential buildings, additional measures for increasing the strength at dynamic effects indoors are not foreseen. The walls of the structure fixed in the framework are not designed for shock wave caused by explosion of utility gas. When designing a building, the task of the special dynamic load is often reduced to the calculation of the safe shock pressure, exceeding of which leads to the destruction of the structures. The wall with the window area under dynamic effects is a blast relief panel, which reduces the excess pressure inside the room. The proposed method of calculating a design with a window unit allows determining the dynamic reaction of the wall on explosive pulse. The proposed calculation technique of the constructions at shock loads allows tracing the changes of the inertial forces and displacements at any stage of dynamic response. The reaction to dynamic loads can be also set for non-monolithic structures, consisting of different materials with different conditions of fastening. Elastoplastic reaction of a brick wall with glass units was determined using step-by-step method of linear acceleration. The calculation of stress-strain state of brick walls with window panes determined the strength properties of the structures close to the monolithic version. The proposed technique of numerical solution of dynamic equations is applied only in the analysis of elastic systems, in which the dynamic characteristics remain unchanged throughout the reaction process.

DOI: 10.22227/1997-0935.2014.1.33-40

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  2. Komarov A.A. Razrushenie zdaniy pri avariynykh vzryvakh bytovogo gaza [Destruction of Buildings Subject to Accidental Explosions of the Utility Gas]. Pozharobezopasnost [Fire Safety]. 2004, vol. 13, no. 5, pp. 15—23.
  3. Pilyugin L.P. Obespechenie vzryvoustoychivosti zdaniy s pomoshch'yu predokhranitel'nykh konstruktsiy [Ensuring Blast Resistance of Buildings with the Help of Protecting Structures]. Moscow, Pozhnauka Publ., 2000, 224 p.
  4. Mishuev A.V., Komarov A.A., Khusnutdinov D.Z. Obshchie zakonomernosti razvitiya avariynykh vzryvov i metody snizheniya vzryvnykh nagruzok do bezopasnogo urovnya [Common Patterns of Accidental Explosions Development and Methods of Reducing Explosive Loads up to the Safe Level]. Pozharobezopasnost [Fire Safety]. 2001, vol. 10, no. 6, pp. 8—19.
  5. Komarov A.A. Analiz posledstviy avariynogo vzryva prirodnogo gaza v zhilom dome [The Analysis of the Consequences of Natural Gas Explosions in Residential Building]. Pozharobezopasnost [Fire Safety]. 1999, vol. 8, no. 4, pp. 49—53.
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Vestnik MGSU 8/2012
  • Khodzhiboev Abduaziz Abdusattorovich - Tajik Technical University named after academic M.S. Osimi Candidate of Technical Sciences, Associated Professor, Chair, Department of Structural Mechanics and Seismic Resistance of Structures, +7 (992) 918-89-35-14, Tajik Technical University named after academic M.S. Osimi, 10 Akademikov Radzhabovyh St., Dushanbe, 734042, Republic of Tajikistan; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 121 - 124

The subject of the research is the concentration of stresses in a plate that has two side
recesses, if the plate is exposed to the pre-set surface stress. Boundary integral equations are
derived on the basis of the reciprocity theorem. The fundamental Kelvin solution is used to define
the displacement area in the finite isotropic elastic plane. The mathematical model and the solution
algorithm, both developed by the author, represent a numerical solution designated for the plate
that has two side recesses. Comparison of results with well-known solutions demonstrates their
good convergence. The author has discovered that the smaller the radius of the recess, the higher
the stress concentration

DOI: 10.22227/1997-0935.2012.8.121 - 124

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Research of stress-strain state and stability of a rokfill dam under seismic actions

Vestnik MGSU 11/2015
  • Orekhov Vyacheslav Valentinovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, chief research worker, Scientific and Technical Center “Examination, Design, Inspection”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 157-166

One of the main factors determining the safety of earth sea and river hydraulic structures erected on water-saturated grounds is the process of consolidation, manifested under the action of static and seismic loads. A feature of cohesionless soils located in the structure itself or in its base, is their potential ability to liquefaction under seismic impacts. This paper describes the method of calculating the saturated soil’s environments under seismic actions based on the numerical solution of differential equations of the theory of consolidation by finite element method. The results of the static problem solving for the phased construction of the installation are used as the initial conditions. In order to describe the deformability of soil materials mathematical model formed by the theory of plastic flow with hardening is used. The parameters of this model are determined by the results of triaxial testing of soils. As an example, we study the interaction of a sea rockfill dam with a sandy base under seismic impacts, determined by the synthetic accelerograms. The results of calculations of the stress-strain state of the two sections of the dam (shallow and deep) are presented, and assessment is made of the possibility of liquefaction of sandy soil base. It is shown that the pore pressure that occurs in water-saturated cohesionless soil base and the body of the dam under seismic impacts, unloads the soil skeleton, which leads to a decrease in local shear safety factors. And, in the less dense soil base of the shallow section of the dam, the soil skeleton is unloaded to a greater extent, which negatively affects its overall safety factor.

DOI: 10.22227/1997-0935.2015.11.157-166

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  3. Li Sa, Li Jingmei, Yang Jinliang. Liquefaction Analysis of the Foundation of Erwangzhuang Reservoir Dam in Tianjin. Proc. of the 4th Int. Conf. on Dam Engineering. Nanjing. A.A. Balkema. 2004, pp. 477—483.
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