拱坝整体非线性稳定分析

根据拱坝的结构特点，针对乌江构皮滩拱坝坝址区存在的层间错动带，软弱夹层及断层破碎带等的复杂地质条件，采用三维非线性有限元法研究其应力应变及稳定问题，对大坝的安全性进行评估，为初步设计提供应力，位移及稳定安全系数等方面的参考依据。

Nonlinear Stability Analysis of Arch Dams

Based on the structural characteristics of arch dams,in consideration of the complicated geological conditions,the stree strain and the whole structural stability of arch dams are studied with 3 D nonlinear FEM.According to the case of Goupitan arch dam located on the Wujiang River in China,the ruptured fault zone,weakness interlayer zone and fracture zone in the bed rock near the dam site are studied with 3D FEM.The anti slide stability of the dam is discussed.Finally,the safety features of the dam are appraised,and the coefficients of stress,displacement and safety for dam design are suggested.