SEISMIC ANALYSIS OF MULTISTOREY RC BUILDINGS CONSIDERING THE SOIL STRUCTURE INTERACTION

Influence of underlying soil on the seismic response of multi-story buildings can be neglected in case of stiff and very stiff soil and structure can be analysed assuming fixed base condition. However the seismic response of structure changes when the underlying, soil condition are soft soil deposit. Earthquake characteristics, travel path, soil property and soil structure interaction are the chief factors affect the seismic response of the structure. This study intends to find the seismic response of multi-storey building considering soil structure interaction. The objective of this study is to compare the effect of soil structure interaction on flexible base and fix base foundations considering different types of soil. The literature review pertaining to this study has been carried out with respect to effect of soil structure interaction on building frame, footings, tall sky-pod structure, low rise buildings and reinforced concrete moment resisting building frames in terms of base shear, mode shape, displacement response, acceleration response and other influence factors.