复杂坝基重力坝抗滑稳定分析中应力状态研究  

On the State of Stress when Analyzing the Stability of Gravity Dam with Complex Dam Base

作　　者：杨强[1] 肖平[1] 薛利军[1] 

机构地区：[1]清华大学土木水利学院,北京100084

出　　处：《水力发电》2006年第12期26-29,共4页Water Power

基　　金：国家自然科学基金资助项目(50579026);973课题资助项目(2002cb412708)

摘　　要：将有限元应力成果代入刚体极限平衡法中推求滑块稳定安全系数的强度校核法是一种有效的稳定分析方法,但线性和非线性应力分布所造成的差异是一个尚待深入研究的课题。通过对具有复杂坝基的重力坝的抗滑稳定进行分析,得出如下结论:采用强度校核法进行稳定分析时,应用弹性与非线性有限元的应力结果所得稳定安全系数相差不大,采用弹性有限元的结果能满足工程精度要求。In the Strength Check Method, the stress result calculated by FEM is used for calculating stability coefficient by Rigid Limit Equilibrium Method. The difference caused by the the condition of linear or non-linear stress hasnt been look into. In this paper, by analyzing the gravity dam with complex dam base, the conclusion is drawn as follows： Inthe Strength Check Method, the difference of the result caused by linear or non-linear stress is small, and using the linear stress can meet the requirement of project.

关 键 词：重力坝 刚体极限平衡法 稳定分析 应力状态 

分 类 号：TV314[水利工程—水工结构工程]