Finite element analysis of soil-base-isolated-structure

In recent decades, base isolation technology has attracted more and more concentration in research. It has been adopted by national code for seismic design of buildings, and has been wildly applied to a broad range of applications worldwide. However, in traditional theory analysis, the influence of the soil-structure interaction on base isolation is often ignored. This paper proposes a way to analyze the structure, isolated layer and soil as a whole system, using developed ANSYS. A 7-layers structure with laminated rubber bearings is analyzed by FEM with SSI. The results show that finite element analysis of whole seismic response of the soil-base-isolated-structure is feasible and necessary.