摘要
本文在非线性有限元数值模拟重力坝基岩的破坏过程和失稳形态的基础上,对现行规范的稳定审查方法进行了分析探讨,提出了一种新的失稳准则——“准弹性”准则,导出了相应的计算公式,并结合实例作了分析比较。
On the basis of an investigation into the gravity dam foundation failure process and state by way of nonlinear FEM numerical simulation, the present standard method of stability examination is analyzed and discussed, in the paper. A new failure criterion—'quasi-elasticity' criterion—is put forward and the corresponding formula is deduced. At last, a comparison dealing with two project instances is made.
关键词
重力坝
岩石
基础
失稳准则
dam foundation
yield
limit condition
critical
failure criterion
