覆盖土层场地地震断裂反应分析方法  

A method for earthquake rupture analysis of overlying soil site

作　　者：郭恩栋[1] 邵广彪[1] 薄景山[1] 石兆吉[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2002年第5期122-126,共5页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局工程力学研究所预研究项目 ( 2 0 0 10 80 1)

摘　　要：基于有限元和拟静力的基本原理 ,提出了一种基于断层位错的覆盖土层场地地震断裂反应弹塑性有限元分析方法 ,计算中考虑了土层厚度、断层种类和倾角、软弱夹层以及土的非线性等因素 ,通过编制的程序计算了地表断裂位移 ,模拟了土层的破裂过程。In this paper, based on FEM and pseudo-static theory, an elastic-plastic FE analysis method is proposed for earthquake rupture response of overlying soil site snbjected to fault movement. Factors such as the depth of overlying soil, kinds and dip angle of fault, soft deposit and the soil's non-linearity are taken into account. Surface failure displacement is studied and rupture process of soil mass is simulated.

关 键 词：覆盖土层 地震断裂 弹塑性 有限元 断层 有限元分析方法 

分 类 号：P315.9[天文地球—地震学]