SEISMIC ANALYSIS OF RC BUILDING CONSIDERING SOIL STRUCTURE INTERACTION

Abstract

Soil condition is thus very important during an earthquake. The analysis of the energy transfer mechanism from soil to buildings under seismic waves is censorious for the seismic design of the multi-storey structures and improves with the idea of soil structure for building design. Recent studies and investigations indicate that soil structure interaction (SSI) can be negative for structural seismic response. It is strongly advised to improve the idea of SSI when developing structures in seismic zone Ⅳ and Ⅴ, which are under great danger of seismic waves quite regularly. Equivalent static load; response spectrum technique and non-linear; time history analysis three approaches of analysis are used for seismic demand assessment of the target moment resistant frame buildings. Under this project, RC building is to investigate SSI in G+10 Storey with a 30 m elevation using a 22.5 m X 22.5 m layout. The work models using SAP2000 for SSI analysis and the finite element tools ETABS. Evaluated is the influence of SSI on seismic response comprising storey drift, storey displacement, base shear, natural time period, bending moment, twisting moment changes in structural components. SSI acquired results are matched with those related to fixed base support.