SEISMIC RESPONSE MODEL INCLUDING SSI OF RC BUILDINGS ON ISOLATED AND RAFT FOUNDATIONS

From the literature it is clear that the interaction between the superstructure and the soil- foundation has not been taken into consideration in most of the research work. The effect of construction phase and mode of superstructure loading on the response of structure and foundation has not been given attention. The purpose of this study is to formulate and investigate analytical model for natural period of reinforced frame buildings (low, medium and high rise) based on RPA2013 with fixed and flexible base. Three types of soil hard, medium and soft are used; isolated foundation for hard and medium soil ? sites S1, S2 and raft foundations for soft soil sites S3 and S4.