Parametre Analysis On The Seismic Behavior Of Soil-asymmetric Structure Interaction System

Soil-Structure Interaction (SSI) has been one of the most important issues of earthquake engineering in the world in the recent thirty years. Since it is a crossing subject involving earthquake engineering, structural engineering, ground foundation, random vibration, seismology, and higher mathematics etc., there are many problems that should be investigated deeply. Available research conclusions are very limited for considering the influence of SSI in structural seismic design.At the same time, the mass centre and the stiffness centre are not at the same place for the mass and the stiffness distributing abnormally in the structure floor, which leads to lateral-torsional coupling response in the structure differently. Nowadays the researches about torsion design almostly base on the experimentation of the single component or the supposing that the foundation is entirely rigid. More regulations on structure base on the seismic experience, shorting of quantitive analysis.So it is very important to research on the regular seism response of soil-asymmetric structure interaction and to comlete the issues in the code.In this article, soil-asymmetric interaction system is set up and the base-bounding stiffness is affirmed by ANSYS program. Furthermore, the vibrating equation of the soil-asymmetric interaction system is set up by the Lagrangian enegy method. The infecting parameters on the lateral-torsional coupling response, design internal force and displace of the structure, is affirmed and the researches on parameters are carried out. Some regular conclusions are got on the previous works.