复杂地基上砼拱坝三维非线性有限元稳定分析  

Analysis of Concrete Arch Dam on Complicated Foundation by Three-dimensional Nonlinear Finite Element Method

作　　者：马连军[1] 种秀灵[2] 梁慧兰[1] 

机构地区：[1]江西省水利规划设计院,江西南昌330029 [2]四川水利职业技术学院,四川都江堰611830

出　　处：《水电能源科学》2010年第4期75-77,共3页Water Resources and Power

摘　　要：针对目前拱坝实际工程设计及坝肩稳定分析常采用传统的刚体极限平衡法存在的缺陷,基于材料弹塑性理论,采用三维非线性有限元法分析了坝体与坝肩岩体抗滑稳定性,通过实例计算分析并分别以荷载突变与材料强度逐渐降低两种方式评价了坝肩岩体抗滑安全稳定性。结果表明,该法有效、真实,能充分反映大坝与坝基岩体的共同作用效应,可供拱坝设计、优化和施工等参考。In order to solve the drawbacks of arch dam design and stability analysis of dam abutment with the traditional rigid limit equilibrium method, three-dimensional nonlinear FEM is used to analyze anti-slide stability of arch dam abutment rock based on the theory of elastic-plastic of material. Examples evaluate the anti-slide stability safety factor of arch dam abutment rock in both case of sudden load change and material strength gradually decreased, respectively. The results show that the proposed method is effective and can fully reflect the interaction between arch dam and the bedrock. Thus, it provides reference for design, optimization and construction of arch dam.

关 键 词：三维非线性有限元 拱坝坝肩岩体 应力和位移 抗滑稳定安全系数 本构关系 

分 类 号：TV642.4[水利工程—水利水电工程] TV314