坝基三维深层抗滑稳定分析的极限方法  

Deep sliding stability analysis of dam foundation by using 3D upper bond method

作　　者：张发明[1] 陈祖煜[2] 弥宏亮[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098 [2]中国水利水电科学研究院岩土所,北京100044

出　　处：《辽宁工程技术大学学报（自然科学版）》2003年第6期776-778,共3页Journal of Liaoning Technical University (Natural Science)

摘　　要：基于塑性力学上限解的基本理论,将边坡稳定性评价的三维极限分析方法应用于坝基深层抗滑稳定分析中,通过将滑体离散为一系列具有倾斜界面的条柱体,并假定滑体中存在一个“中性面”,在这个面上,滑体的速度均与这个面一致,然而计算条柱体体系的协调速度场,就可以方便地求出滑体的稳定系数。实例分析表明,该方法适用于具有显著三维滑动效应的坝基深层抗滑稳定性评价。Based on discussing the upper bond plasticity theorem, 3D limit analysis method of dam foundation stability analysis was put forward. On dispersing the sliding body into a series inclined column and hypothesizing a neutral plane in the slide body, the stability factor of sliding body in deep dam foundation can be simply obtained without resolving the complicated three dimensional equilibrium evaluations. The value evaluated by 3D limit analysis method was the upper bond value. It is obvious that the 3D limit stability analysis method proved by one example of dam foundation deep sliding body stability analysis of TGS power station in Jiangsu province can be used in deep sliding body stability analysis of dam foundation.

关 键 词：坝基 极限分析 深层抗滑稳定 稳定分析 塑性力学 

分 类 号：TV64[水利工程—水利水电工程]