Effect of the viscous damping on the seismic response of Low-rise RC frame building

Fatima-Zohra Baba-Hamed; Luc Davenne

doi:10.17533/udea.redin.20191045

Authors

Fatima-Zohra Baba-Hamed University of Sciences and Technology of Oran https://orcid.org/0000-0001-7085-2506
Luc Davenne University of Paris Ouest

DOI:

https://doi.org/10.17533/udea.redin.20191045

Keywords:

RC frame building, damping approach, nonlinear time history analysis, engineering demand parameters

Abstract

The equivalent viscous damping is a key parameter in the prediction of the maximum nonlinear response. Damping constitutes a major source of uncertainty in dynamic analysis. This paper studies the effect of using viscous damping, on the reduction of the seismic responses of reinforced concrete RC frame buildings modeled as three-dimensional multi degree of freedom (MDOF) systems, and the use of nonlinear time history analysis as a method of visualized behavior of buildings in the elastic and inelastic range. This study focuses on the implications of the available modeling options on analysis. This article illustrates the effect of using the initial or tangent stiffness in Rayleigh damping in analysis of structures. Correspondingly, this work is also concerned with the estimation of Rayleigh, mass-proportional or stiffness-proportional damping on engineering demand parameters (EDPs). As a result of a series of considerations, a damping modeling solution for nonlinear time history analysis (NLTHA) was carried out to compute the damage index. The application example is a building designed according to reinforced concrete code BAEL 91 and Algerian seismic code RPA 99/Version 2003 under seven earthquake excitations. The simulations demonstrated the accuracy and effectiveness of the proposed method to account for all of the above effects.

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Author Biographies

Fatima-Zohra Baba-Hamed, University of Sciences and Technology of Oran

Department of Civil Engineering.

Luc Davenne, University of Paris Ouest

Laboratory of Energetics Mechanics Electromagnetism.

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