摘要
本文采用轴对称非线性有限元方法分析竖洞开挖与混凝土的衬砌施工过程中围岩的应力应变 ,计算中引入破坏接近度的概念以判定材料的非线性及其破坏问题 ,分析了围岩的软化及其破坏形态 。
In this paper, the nonlinear axisymmetric finite element method is adopted to analyze the stree strain of surrounding rock of vertical tunnel in the process of excavation and lining. The failure approach concept is introduced in the discrimination of the non linearity and failure of the rock. The softening of the rock and the types of failure are simulated and the creeping of the tunnel is analyzed.
出处
《水利学报》
EI
CSCD
北大核心
2001年第1期85-89,共5页
Journal of Hydraulic Engineering
关键词
围岩
蠕变特性
数值模拟
轴对称
非线性
axisymmetric finite element
nonlinear
creeping
excavation
lining
numerical simulatioL
