Soil–Structure Interaction Consideration for Base Isolated Structures under Earthquake Excitation

This study aims to analytically implement base isolation with soil–structure interaction (SSI) on a sample structure and develop very simple solution add these combined effects into the mass, damping stiffness matrices of structure. A spectrum analysis is also carried out considering base-isolated structures SSI. Dynamic simulations are performed throughout study. In simulations, three shear frame different properties considered. The strong ground motions selected for analyses eighteen events far-fault near-fault components. addition, four soil combination cases taken account. These analytical conventional fixed SSI seismically isolated or without numerical results showed that when considered, effectiveness system may decrease, effect prominent in softer conditions.