二维场地地震反应有限元分析的问题探讨  

Discussions on Two-dimensional Finite Element Analysis of Seismic Response

作　　者：陈昌斌[1] 楼梦麟[2] 陶寿福[1] 

机构地区：[1]中国电力顾问集团华东电力设计院,上海200331 [2]同济大学,上海200092

出　　处：《震灾防御技术》2006年第4期292-301,共10页Technology for Earthquake Disaster Prevention

基　　金：中国电力工程顾问集团公司科研项目;合同号KJ00-02-21;课题编号G-1/KJ00。

摘　　要：本文通过数值计算,在线弹性范围内初步分析了土层地震反应随不同侧向人工边界、有限土域取值范围、土介质的阻尼系数的变化情况;采用滞后阻尼假定,探讨了在土层时域分析中如何由滞后阻尼系数形成阻尼矩阵,给出了一个阻尼系数转换频率取值的经验公式。在此研究基础上编制了二维有限元SR2D计算程序。Based on the results from the numerical calculation, some aspects of the seismic response of soil layer varying with artificial boundary, the scope of soil region, damping coefficient etc., are discussed. With linear visco-elastic assumption analytical solution in time domain and the formula of transforming frequency derived from lag-damping coefficient are given. Finally, we developed the computer program SR2D which may perform 2-dimensional finite element analysis.

关 键 词：人工边界 阻尼系数 非线性 行波输入 地震反应分析 

分 类 号：TU435[建筑科学—岩土工程]