DYNAMIC ANALYSIS OF MULTI STOREY STRUCTURE FOR DIFFERENT SHAPES

Abstract

Extinct earthquakes events demonstrate that, buildings with irregularity are prone to earthquake damages. Thus as it's essential to identify the unstable response of the structure even in high seismic zones to chop back the seismic damages in buildings. Modern buildings have efficient structural systems, and utilize high-strength materials, resulting in reduced building height, and thus, become more slender and flexible with low damping. These flexible buildings are very sensitive to wind excitation and earthquake load causing discomfort to the building occupants. Reinforced concrete multi storey buildings are subjected to most dangerous earthquakes. It was found that main reason for failure of RC building is irregularity in its plan dimension and its lateral force resisting system. This project aims at studying of the seismic analysis and design on structural behaviour of multi-storey building (G+12) for different plan configurations like Rectangular, C- shape, T-Shape, O-Shape Buildings using ETABS v9.7.1 computer program. A detailed parametric study is carried out to investigate the effect of various parameters on the building structure by non-linear dynamic analysis for medium soil at zone V. Finally the results are observed to study the effect of structural displacements, drifts, story shear, overturning moments. Comparison of the results of non linear dynamic analysis for different structure is done. The whole models were analysed with the help of ETABS 9.7.1 version. Within the gift study, Comparative Dynamic analysis
for all four cases is investigated to gauge the deformation of the structure.