摘要
锦屏双曲拱坝设计坝高 30 5m ,其坝址河谷呈V形 ,有良好的建坝条件 .但基础左坝肩存在断层、低波速带及深部裂隙等地质缺陷 ,成为此工程的隐患 .能否处理及如何处理左坝肩成为在此坝址建坝的关键因素 .本文利用三维非线形有限元程序进行计算分析 ,分别单独考虑各种地质缺陷及其组合对坝体及基础应力位移的影响 ,找到最不利的控制因素 ,针对其提出加固处理方法并加以验证 .利用大坝超载分析寻求破坏面 ,从而得出破坏的极限荷载 .最终证明了在此坝址建坝的可行性 .
Jinping arch dam is designed for 305m height. The V shaped river valley is favorable for arch dam building. Whereas the fault, low wave speed band and deep crevice in left abutment of foundation can always be the hidden defect of the project. In this article, the nonlinear analysis of FEM (finite element method) is used for considering action of every geologic deformity on dam and foundation, checking the stress and the displacement, finding the dominant factor and therefore putting forward a treatment plan. The failure plane and then the limit load are calculated by overloading analysis. The building feasibility is proved in the end.
出处
《华北水利水电学院学报》
2001年第3期31-34,共4页
North China Institute of Water Conservancy and Hydroelectric Power
