Non-linear Dynamic Analysis of a Multi-storey Building Subjected to Earthquakes

During the last few decades, seismic analysis of multi-storey building has experienced notable growth. In the past years, multi-storey buildings were designed without considering any seismic excitation which is not reliable but later it was noticed that the nowadays multi-storey building is designed for some lateral loads like earthquake, wind, etc. When the dynamic load is considered for analysis, it performed significantly well than for gravity loading. In India, some states like situated in the seismically active Himalayan region in which evaluation of natural hazards due to seismic excitation is an important thing. In this paper, nonlinear dynamic analysis of a multi-storied RC building was carried out considering the different seismic intensities which occurred in seismically active state Uttarakhand. The building under consideration is modeled using finite element-based software SAP 2000 v.14.0.0. The response parameters used in the seismic analysis are time period, base shear, modal mass participation, lateral displacement, and storey drift. From the study, it is concluded that the time-history analysis method fortified the safety of multi-storey building when it is subjected to seismic excitations.