首页 | 本学科首页   官方微博 | 高级检索  
     检索      

考虑土-结构相互作用的大跨度斜拉桥非线性地震反应分析
引用本文:李纬,;丁海平.考虑土-结构相互作用的大跨度斜拉桥非线性地震反应分析[J].地震学刊,2009(5):555-560.
作者姓名:李纬  ;丁海平
作者单位:[1]苏州科技学院结构工程省重点实验室、苏州科技学院,江苏苏州215011; [2]中国地震局工程力学研究所,哈尔滨150080
基金项目:国家科技支撑计划项目(2006BAC13B02)资助
摘    要:运用大型有限元通用软件ANSYS/LS-DYNA及其并行运算功能,进行了考虑土-结构相互作用的大跨度斜拉桥地震反应分析。考虑混凝土、土介质和悬索材料的非线性与考虑材料线弹性的计算结果比较表明,考虑材料非线性情况时,由于进入塑性阶段后的能量耗散,内力比考虑线性情况时小;而进入塑性阶段后,结构刚度变小,运动量要比考虑线性情况时大。

关 键 词:ANSYS/LS-DYNA  大跨桥梁  土-结构相互作用  非线性  地震反应分析

Nonlinear Seismic Response Analysis of Large-Span Cable-Stayed Bridge with Soil-Structure Interaction
Institution:LI Wei, DING Hai-ping (1. Provincial Key Laboratory of Structure Engineering, Suzhou University of Science and Technology, Suzhou 215011, China; 2. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China)
Abstract:In this study, the large-scale finite element software ANSYS/LS-DYNA, and its parallel computing function were used to analyze the earthquake response of a large-span cable-stayed bridge with soil-structure interaction. Meanwhile, the material nonlinearity of concrete, soils and cables was considered in the finite element analysis. The results are as following. First, internal forces are less in the case of material nonlinearity than those in the pure flexible study, which is due to energy dissipation at plastic stage; second, the displacement was larger in the case of material nonlinearity than those in the pure flexible study, that is because stiffness reduction at plastic stage.
Keywords:ANSYS/LS-DYNA  large-span bridge  soil-structure interaction  nonlinearity  seismic response analysis
本文献已被 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号