强震区心墙土石坝地震反应三维非线性分析  

Three-dimensional nonlinear analysis of seismic response for core earth-rock dam in meizoseismal area

作　　者：谢红强[1] 肖明砾[1] 何江达[1] 左林勇[1] 帅春[1] 

机构地区：[1]四川大学水利水电学院,成都610065

出　　处：《水力发电学报》2009年第5期108-113,共6页Journal of Hydroelectric Engineering

基　　金：四川省科技厅科技支撑项目(批准号2003SZ0163)

摘　　要：地震对土石坝的危害已经为工程界所广泛认识和重视,尤其"5.12"汶川大地震后,西部强震区土石坝的抗震安全性已成为人们普遍关注的关键技术问题。论文结合东风水库土石坝工程,基于动力分析中的等效线性模型,采用三维非线性动力有限元法,对心墙土石坝进行了地震反应分析,揭示坝体动应力、动应变、加速度、残余变形等分布规律,对土石坝的抗震安全性进行评价,为工程的除险加固设计提供了参考依据。It is generally accepted and emphasized that earthquake could cause a great harm to earth-rock dam. After the Wunchuan earthquake, seismic safety of earth-rock dam in meizoseismal areas has been a key technological problem widely concerned. An equivalent linear model and a 3D nonlinear dynamic finite element method were adopted to analyze the seismic response of dam structure for the Dongfeng earth-rock dam, and the space distributions of dynamic stress, strain, acceleration, permanent deformation, etc, are obtained. This paper, through an evaluation of aseismic safety, may provide reasonable references for danger-eliminating and reinforcing design.

关 键 词：水工结构 动力响应分析 等效线性模型 心墙土石坝 非线性有限元法 

分 类 号：TV312[水利工程—水工结构工程]