Seismic Evaluation of RC Building Considering Soil-Structure Interaction

Abstract

Soil-structure interaction (SSI) analysis is a special field of earthquake engineering. It is worth starting with definition. Common sense tells us that every seismic structural response is caused by soil-structure interaction forces impacting structure (by the definition of seismic excitation). Non-linear structural analysis is becoming most important in earthquake resistant design, which requires more information about the drifts, displacements and inelastic deformations of a structure than traditional design procedures. SAP2000 V14 is one of the most sophisticated and user-friendly software which performs the non-linear static (Push Over) analysis in a very simple way. In the present study 11 storey (2 basements + 9 upper floors) RC moment resisting frames are designed by the Limit state of design method. Then the frame is analysed by the nonlinear static analysis (Pushover Analysis) by considering soil structure interaction (SSI) effects using SAP2000 v14 software. To obtain the effect of soil structure interaction effects on RC frame structure, the default plastic hinges are to be assigned for moment resisting frames as per FEMA 356.