考虑不同方向地震作用时土石坝动力反应分析  

Analysis of dynamic response of rock-fill dam under role of earthquake in different directions

作　　者：傅海燕[1,2] 朱俊高[1,2] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学岩土工程科学研究所,江苏南京210098

出　　处：《水资源与水工程学报》2013年第5期131-135,共5页Journal of Water Resources and Water Engineering

基　　金：高等学校博士学科点专项科研基金(20110094110002)

摘　　要：对Abaqus软件进行二次开发,引入等效线性模型,对某心墙堆石坝进行了三维有限元地震反应分析,研究了大坝在VII度地震下的加速度、动剪应力、相对动位移等反应规律。同时,分别对该坝考虑三向地震波输入及仅两个水平向地震波输入情况下的地震动力反应进行了计算比较,研究竖向地震加速度在VII度地震下对大坝的影响。结果表明:VII度地震情况下竖向地震波对土石坝顺河向和坝轴向的动力反应几乎没有影响,但是对竖向的影响不可忽略。Through the implemention of equivalent linear elastic model into Abaqus, the paper analyzed the dynamic response of a rock - fill dam in detail by 3D FEM and researched the response rules of the maximum acceleration, the maximum dynamic shear strain, as well as the maximum relative dynamic displacement under the role of earthquake of seven degree. At the same time, it calculated and compared the seismic dynamic response of the dam in two different conditions such as input of X, Y horizontal seismic waves ,and input of seismic waves of X, Y, Z directions respectively. It also studied the impact of vertical seismic acceleration on dam under rule of earthquake of seven degree. Result shows that the ver- tical seismic wave barely has influence on dynamic response in horizontal directions, but has huge influence in vertical direction.

关 键 词：有限元 地震响应 ABAQUS 土石坝 

分 类 号：TV641[水利工程—水利水电工程]