拱坝-地基破坏的数值模型与溃坝仿真  

Numerical modeling of dam-foundation failure and simulation of arch dam collapse

作　　者：崔玉柱[1] 张楚汉[1] 金峰[1] 王光纶[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《水利学报》2002年第6期1-8,共8页Journal of Hydraulic Engineering

摘　　要：本文使用刚体弹簧元模型来模拟拱坝 -地基这类非连续介质和连续介质组成的系统 ,对一个悬臂梁的位移场和应力场的计算并与有限元方法计算结果的对比表明 ,这种方法具有良好的精度 .应用这一模型对玛尔帕塞拱坝的溃坏进行了仿真 ,重现了拱坝的破坏过程 ,探讨了拱坝坝肩滑动失稳的原因 ,计算结果表明坝肩岩体裂隙和断层的强度不足是导致整个拱坝溃毁的关键因素 .The 3 D rigid body spring element method is applied to simulate the behavior of the arch dam abutment system consisted of continuum and discontinuous media. The principle of the method is described and the accuracy of this method is verified by comparing the predicted displacement field and stress field of a cantilever beam with the analysis by means of FEM. Detailed study on the failure process of Malpasset Arch Dam is carried out. The result demonstrates that insufficient strengths of rock joints and faults of the abutment are the crucial factors causing the entire collapse of the Dam.

关 键 词：拱坝 数值模型 溃坝 仿真 三维刚性弹簧元 地基破坏 坝肩 

分 类 号：TV642.4[水利工程—水利水电工程]