Seismic Assessment of RC Structure with and Without Lateral Load Resisting Members

Abstract

Earthquakes are widely feared since immense powers can be released with little to no notice. When powerful earthquakes last longer than a few seconds, they can inflict catastrophic damage. According to “Yield Line Theory,” the yield occurring in the RC square slab is found to be in X shape and it will cause stress concentration along yield line. So, on that note this study is carried out by taking bare frame (BF), bare frame incorporated with rigid diaphragm (RD), and on that yield line pattern the next structure considered which is X-bracing element (X-BE). The main objective of this paper is to compare the seismic performance of three G + 5 structure with lateral load resisting member (i.e., RD and X-BE) and without lateral load resisting member (i.e., BF). In these three models (i.e., BF, RD, and X-BE), all structural and seismic characteristics are kept constant. Comparison in terms of performance point, maximum story displacement, base shear, story stiffness by analysis the models for nonlinear static pushover analysis with DDBD approach. Therefore, it has been observed that X-BE shows higher ductility ratio as compared to other two models, and hence, it shows better performance during earthquake.