基于非线性有限元法的拱坝坝肩局部稳定性研究  

An Analysis of Abutment Stability of Arch Dams by Nonlinear Finite Element Method

作　　者：苏卫强 何力 吴志波 

机构地区：[1]云南省水利水电勘测设计研究院,昆明650021

出　　处：《中国农村水利水电》2013年第9期126-129,共4页China Rural Water and Hydropower

摘　　要：结合丹达河双曲拱坝工程实例,运用非线性有限元法对不同工况下右坝肩局部稳定性进行研究。采用强度储备系数法模拟失稳的渐进破坏过程,分析认为坝肩断层f12承载能力较低,对右坝肩变形破裂起控制作用。另利用刚体极限平衡法对坝肩稳定性进行校核,其值满足规范要求。综合分析,丹达河右坝肩达到稳定要求,部分基础可作适当加固处理。With project example for Danda double-curvature arch dam, using nonhnear hmte element metnoa, atmtment staDmty m arch dams under different conditions is analyzed. Intensity safety factor method is adopted to simulate gradual destroy progress of a- butment destabilization. The analysis shows that the bearing capacity of abutment faults f12 is lower and the deformation and fracture of right abutment are controlled. Also, the abutment stability is checkedby using the rigid body limit equilibrium method and the val- ue meets standard requirements. After a comprehensive analysis, right abutment stability requirement is achieved in Danda River, and reinforcement treatment for partial foundation should be taken.

关 键 词：双曲拱坝 非线性有限元法 强度储备系数法 刚体极限平衡法 

分 类 号：TV642.4[水利工程—水利水电工程]