已知滑动面边坡稳定安全系数的有限元迭代解法

Finite element iteration method for stability safety factor of known sliding surface

本文提出了在滑动面已知条件下的边坡抗滑稳定安全系数的弹塑性有限元迭代解法。这种方法比常规的刚体极限平衡解法更能反映实际情况,可适用于解决二维或三维问题,同时可给出滑面上的应力场和位移场。文中给出了具有闭合解的二维和三维算例,结果表明本文提出的计算方法是有效、合理和可靠的。

This paper proposes the finite element iteration method for stability safety factor of the known sliding surface.This method is presented to obtain the safety factor meeting the limit equilibrium condition requirement. This method can be used for 2D and 3D problems and the results include displacement field and the stress field. Two examples of the safety factor against a 2D known sliding surface and a 3D known sliding surface are analyzed. Comparison between the results and the theoretical value it can be demonstrated that the method suggested in this paper is effective, rational and reliable.