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使用有限单元法对岩石基础、边坡和巷道等问题进行稳定分析在国内外做了大量的工作。本文结合我们自己的工作,以平面问题的位移法为例,介绍物理上非线性物体的有限单元分析的基本原理,并对某些具有非线性应力应变关系的岩体介质以及诸如节理、断层等间断面提出一些简单的力学模型。此外,还介绍几个和这些力学模型有关的通用程序以及使用它们得到的某些工程的计算成果。
The finite element method is used to analyze the stability of rock foundation, slope and roadway and so on. At home and abroad, a lot of work has been done. Based on the displacement problem of plane problem, this paper introduces the basic principle of finite element analysis of physical nonlinear objects and analyzes some rock mass media with non-linear stress-strain relations, such as joints, faults, etc. The discontinuities propose some simple mechanical models. In addition, several common procedures related to these mechanical models are introduced as well as the calculation results of some of the projects obtained using them.