The Elastic Analysis Of The Influence Of The Shear Wall Structure Seismic Performance From Pile-soil Interaction

In current seismic design code,the seismic design method is on the premise of rigid foundation.Under the action of earthquake,it exists the dynamic interaction among the superstructure foundation and soil,which produces big differences in the seismic response of the structure when comparing with the condition on the premise of rigid foundation. Over the years,experts and scholars at home and abroad have done a lot of research on the subject of the dynamic interaction of the soil-foundation-structure.But because of the complexity of the subject, the focus is often not the same, so the dynamic interaction under the earthquake need further analysis and research.As an important form of high-rise building structure,shear wall structure is widely used in recent years in the country.In order to overcome the situation that the shear wall structure can not meet the requirement of the engineering on seismic and settlement caused by the adverse geological conditions,the foundation form of shear wall structure is often designed to pile-raft foundation.A 3D model of the soil-pile raft-shear wall structure system has been set up in this paper,which is used for studying the influence of the shear wall structure dynamic characteristics and seismic performance under frequent earthquake from pile-soil interaction,through the modal analysis and dynamic time history analysis.The influence of the dynamic characteristics and seismic performance by the change of soil modulus,pile length,pile diameter has been analyzed.