桩-土-上部结构共同耦合作用下弹塑性地震反应分析  

Elasto-Plastic Seismic Response Analysis on Pile-Soil-Structure Interaction

作　　者：武黎明[1] 王子健[2] 

机构地区：[1]重庆工商职业学院建筑工程系,重庆400052 [2]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2013年第4期621-624,711,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(50879097)

摘　　要：针对某框架结构进行了在地震作用下桩-土-上部结构共同耦合作用时的上部结构弹塑性动力特性和规律的研究。结果表明:是否考虑桩-土-上部结构共同耦合作用时的弹塑性地震反应分析对计算结果有较大的影响;考虑桩-土-上部结构共同作用后柱应力在不同的楼层有放大现象,按折减系数方法来考虑相互作用并非总是安全和合理的,设计时应充分考虑弹塑性地震反应的影响。The resulting internal forces and displacements are multiplied by reduction factors to obtain the design load.This paper deals with an investigation of the elasto-plastic dynamic characteristics of the superstructure for a frame structure under horizontal seismic excitations where the pile-soil-structure interaction is considered.The results of the investigation indicate that whether or not considering the pile-soil-structure interaction in elasto-plastic seismic response analyses has a great effect on the calculation results.With the consideration of the pile-soil-structure interaction results,the column stresses have amplification on different floors of the building.Therefore,the method using reduction factors to consider the pile-soil-structure interaction is not always safe or reasonable.So the elasto-plastic seismic response should be fully taken into account in design.

关 键 词：动力特性 共同耦合 弹塑性分析 地震反应分析 折减系数 

分 类 号：TU435[建筑科学—岩土工程]