In the coastal areas of Fujian Province,some stone structures were built on soft ground.Previous studies have shown that the soil-structure interaction (SSI) effect of soft foundation can lead to an increase in the seismic re-sponse of structures.In order to investigate the dynamic characteristics and seismic response of existing stone structures with different soil stiffness conditions considering the SSI effect,the finite element software LS-DYNA was used to es-tablish a coupled soil-structure system model and a comparative rigid foundation model.The results show that the soft foundation has a significant filtering and amplification effect on seismic motion;the order of floor collapse in the stone structure may change with changes in the soil stiffness;the soil stiffness change has a significant impact on the dynamic characteristics and seismic response of the stone structure,as evidenced by the fact that the inter-story displacement angle increases as the soil becomes softer,and the acceleration response actually decreases slightly.
关键词
石结构/软土地基/土-结构相互作用/土体刚度/地震响应
Key words
stone structure/soft soil foundation/soil-structure interaction/soil stiffness/seismic response
维普
万方数据