考虑土-结构相互作用的高层建筑抗震分析  

Numerical analysis of tall buildings considering dynamic soil-structure interaction

作　　者：李培振[1] 吕西林[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《地震工程与工程振动》2004年第3期130-138,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金重点项目(50025821);国家自然科学基金青年科学基金项目(50308018)

摘　　要：本文采用通用有限元程序ANSYS,针对上海地区一例土-箱基-高层建筑结构进行了三维有限元分析,计算中土体的本构模型采用等效线性模型,利用粘-弹性人工边界作为土体的侧向边界,并研究了土体边界位置、土性、基础埋深、基础形式以及上部结构刚度等参数对动力相互作用体系动力特性及地震反应的影响。Three-dimensional finite element analysis in time domain for dynamic soil-box-structure interaction of a practical engineering is carried out in this paper. General purpose finite element program ANSYS is used in the (analysis.) Commonly used equivalent linearity model is chosen as the constitutive relation of soil. Viscous-spring boundary of soil is implemented in ANSYS program. The influences of parameters, such as soil boundary, soil property, buried depth, foundation type and rigidity of structure, on dynamic characteristics, seismic response and interaction effect of SSI system are discussed.

关 键 词：结构-地基 相互作用 高层建筑 ANSYS程序 箱基 

分 类 号：P315.95[天文地球—地震学]