乌东德拱坝非线性地震反应分析  

Nonlinear seismic analysis of Wudongde arch dam

作　　者：张伯艳[1] 李德玉[1] 涂劲[1] 

机构地区：[1]中国水利水电科学研究院,北京100048

出　　处：《水力发电学报》2009年第5期62-67,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(50479041;90510017;50539100);中国水科院09年度科研专项资助项目

摘　　要：本文在计入坝、地基和库水动力相互作用的情况下,用LDDA(拉格朗日不连续变形分析)模拟拱坝横缝,粘弹性边界为吸能边界的拱坝地震输入模型计算乌东德拱坝非线性地震反应,研究无限地基辐射阻尼和拱坝横缝对坝体反应的影响,分析乌东德拱坝的静动力响应和拱坝横缝在地震作用下的张开情况,并将其计算成果与基于人工透射边界的时域显式有限元方法进行了比较分析。The seismic responses of the Wudongde arch dam are studied by adopting an input model of arch dam earthquake with consideration of the dynamic dam-foundation-water interaction. With this model, employing LDDA （Lagrangian Discontinuous Deformation Analysis） for the simulation of transverse joints and the damping-spring boundaries for the absorption of out-transmitting scatter waves, the opening and closing of transverse joints under the earthquake motions as well as the effects of infinite foundation radiation damping and transverse joints are analyzed. This paper presents the simulation results and a comparison of the input model and time domain FEM.

关 键 词：水工结构 非线性地震反应 LDDA 拱坝 横缝 地基辐射阻尼 粘弹性边界 

分 类 号：TV312[水利工程—水工结构工程]