Abstract
This paper aimed to investigate the seismic response of reinforced concrete (RC) frame buildings under linear and non-linear 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.
Highlights
It is well-established fact that masonry infill walls play an important role in lateral load resistance of reinforced concrete (RC) buildings
This research investigates the performance of reinforced concrete frame building models under earthquake load
The influence of factors related to building models such as masonry infill action and existence of a soft story are analyzed
Summary
It is well-established fact that masonry infill walls play an important role in lateral load resistance of RC buildings. The structural contribution of masonry infill walls is often overlooked in the structural analysis and design of such structures, it affects both the structural and non-structural performance of RC structures and alters the load resisting mechanism and failure pattern of the RC frame [1,2,3]. Recent researches have clearly shown that the damages done to the buildings with masonry infill walls were considerable less than those without masonry infill and the difference was quite a bit significant. This can be due to the dramatic increase in the global strength, stiffness, damping and the dissipated energy of the structures with masonry infill walls [5,6,7,8,9]. In moderate and high seismicity regions, the structural contribution of infill walls cannot be neglected
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