边坡开挖的有限元数值模拟分析

有限元的基本思想是将问题的求解域划分为一系列的单元,单元之间仅靠节点连接,单元内部点的待求量,可由单元节点量通过选定的函数关系插值求得。基于有限元数值模拟分析的基本思想,对不同地貌形态的路堑边坡开挖稳定性进行有限元模拟检算,通过建立单元刚度矩阵及相应的力学模型,借助于大型计算程序ANSYS求解,结合实际,探讨了石灰岩边坡随开挖进行的渐进破坏规律,为石灰岩地区高陡岩石边坡的设计提供了依据。

Finite Element Modeling on High and Steep Cut-slope

The basic principle of finite element method is to divide the resolution aggregation into a series of elements,the node connects between elements,the resolution inside element is to be resolved by the chosen functional operation.Based on the three dimensional finite element numerical analysis method,the numerical simulation analysis on the slope cutting gradually has been made with the enormous finite element program(ANSYS),and stiffness matrix and the relative mechanical model have been set up.Besides a conclusion has been made about the law of the slope failure with the slope cutting gradually,so it puts forward the practicability of the analysis on slope stability with finite element numerical analysis.The results provide a theoretical basis for cut slope design in limestone mountainous area.