【摘要】 强度折减法是一种处理边坡稳定性问题的数值分析方法。该方法在简单均质边坡中的适用性已得到较为一致的认同,但对于非均质土坡稳定性分析的适用性还有待进一步研究。本文旨在探讨强度折减法在分析复杂多层边坡和加固后土坡稳定性的适用性,采用基于强度折减法的FLAC3D(显式拉格朗日有限差分法)对算例进行了分析,分析结果表明由此求得的安全系数、滑动面位置形状与传统方法(极限平衡法)的结果十分接近,从而论证了强度折减法用来分析复杂多层边坡和加固后土坡的稳定性是可行的。更多还原

【Abstract】 Strength reduction method is a numerical analysis method of slope stability. The feasibility of the method in a simple homogeneous slope has been confirmed. But,to non-homogeneous slope stability analysis,its feasibility remains to be further studied. The cases are studied by FLAC3D( Lagrangian difference method) based on strength reduction. The analysis showed that the safety factor,position and shape of slope sliding surface are very close to which obtained by the conventional method( limit equilibrium method). Therefore the strength reduction method used in complex multi-layered slopes and strengthen soil slopes stability analysis is feasible.更多还原