地基参数以及结构层数对桩-土-结构相互作用的影响

用有限元法建立了桩基多层结构体系的平面模型．并结合算例进行相互作用体系的地震反应分析．为了考察参数变化对反应的影响，例题中分别改变桩基参数．上部结构层数．对考虑相互作用后结构体系的自振周期、内力等的变化情况进行了对比分析．得出了地基越弱．楼层越高．相互作用影响越大的结论．可供工程设计参考．

Influence of the foundation soil parameters and structural stories on the pile-soil-structure interaction

A plain model of the pile-foundation multistory structural system is set up by finite element method ,and the earthquake response analysis has been made through an example. To study the influence of parameter variation on the earthquake response, we analyzed the variations of the free periods and the internal forces with the parameters of the soil or the stories of the structure are changed, and arrived at the conclusion that as the soil is weaker, the building is higher, the response of the pile-soil-structure interaction is larger. The results are proposed as reference for engineering design.