摘要
根据古田溪三级大坝的地质和结构特性,通过三维有限元计算,建立了含有指示变量的混合模型,并利用分离出的时效分量,得出大坝垂直位移变形两次"突变"疑点分别是由左岸沉陷基点基础不稳定和地震等荷载造成的结论,同时证明含有指示变量的混合模型是分析突变成因行之有效的方法。
Based on the characteristic of geology and structure of Gutianxi dam, a compound model involving indicative variable is given through the calculation of three dimensional FEM. By use of the separate time effect component, the reasons causing two doubtful saltation of vertical displacement of this dam are given, one is that the base of settlement base points at left side was instable, the other may be earthquake. At the same time, it is proved that compound model involving indicative variable is a effective method to analyze the reason of mutation.
出处
《水电能源科学》
2002年第4期27-30,共4页
Water Resources and Power
关键词
垂直位移
突变
有限元法
指示变量
混合模型
vertical displacement
mutation
finite element method
indicative variable
compound model
