Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) Web of Science
  • Estimation Of The Value Of The Coefficient Of Permissible Damages For A Frame-Bonded Reinforced Concrete Frame Under Earthquake
  • UDC 624.042.7 DOI: 10.33622/0869-7019.2020.09.34-40
    Oleg V. MKRTYCHEV, e-mail:
    Mikhail I. ANDREEV, e-mail:
    Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
    Abstract. When calculating building structures for intense seismic effects by the linear-spectral method, the non-linear nature of deformation is taken into account integrally by introducing the coefficient K1 (the coefficient of permissible damage). This simplified approach when designing building and structures, certain structural schemes, may lead to a deficiency of their seismic resistance. The article presents the results of research to determine the actual values of the bearing capacity reserve and refinement of the studied coefficient for a frame-bonded reinforced concrete frame with a calculated seismic impact intensity of 9 points on the MSK-64 scale. The research was performed using the LS-DYNA software package with the use of nonlinear dynamic methods and nonlinear models of materials for concrete and rebar. Analysis of the results shows that the building under consideration with a frame-bonded reinforced concrete frame, designed according to current national standards, has a deficit of seismic resistance. The value of the coefficient under study, given in the standard for construction in seismic areas for buildings and structures of various structural schemes, requires clarification based on computational studies in more stringent settings, for example, using nonlinear dynamic methods. The approach proposed in this article makes it possible to directly take into account the nonlinear nature of structural deformation during an intense earthquake, to give a reasonable assessment of the level of seismic resistance of reinforced concrete buildings and structures, and to clarify the value of the coefficient K1.
    Key words: seismic stability, nonlinear dynamic calculation method, earthquake accelerogram, coefficient of permissible damages, volumetric finite elements, verification, reserve ratio, frame-bonded reinforced concrete frame.
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  • For citation: Mkrtychev O. V., Andreev M. I. Estimation of the Value of the Coefficient of Permissible Damages for a Frame-Bonded Reinforced Concrete Frame under Earthquake. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2020, no. 9, pp. 34-40. (In Russian). DOI: 10.33622/0869-7019.2020.09.34-40.