Linear and Nonlinear Dynamic Analysis of Masonry Infill RC Framed Buildings

Abstract

This paper aimed to investigate the seismic response of reinforced concrete (RC) frame buildings under linear and nonlinear dynamic analysis. Different building models as bare frame and fully masonry infill frame have been developed for performing the analysis. In order to investigate the effect of irregular distributions of masonry infill walls in elevation on the seismic response behavior, an infill frame model with soft story has also been developed. The linear response spectrum (RS) dynamic analysis and the nonlinear time-history (TH) analysis methods are employed. Moreover, the induced energies in terms of input, potential and kinetic are also obtained from the TH analysis. Moreover, the interaction between infill walls and frames leads to considerable change in the induced responses comparable with the bare model.

Linear Evaluation on Weak Story Medium Rise Structures Placed in High Seismic Areas

“…The existence ASTESJ ISSN: 2415-6698 of a soft story shows dramatic variation in the dynamic behavior of the infill walls model, compared to the one without such a story. The story displacement, overturning moment and stiffness change from one model to the other [11]. It is adequate to analyze a structure's behavior in the plastic stage too, to predict its possible failure mechanism and the maximum base force it can bear.…”