土坡稳定性塑性极限分析条分法

Plasticity limit analysis on soil slope stability by slice techniques

从土塑性力学极限分析上限定理出发 ,建立了土坡条分法平移破坏机构。根据外部作用荷载和土体自重所做的外功率与塑性变形区的内部能量耗损率相等的条件 ,建立起虚功率方程 ,并由此得到了土坡稳定系数计算公式。该公式具有概念清楚、使用方便可靠等特点 ,对土坡稳定性分析具有一定实用意义。

Based on the upper bound theorem of soil plasticity mechanics, a slice techniques for analyzing translational failure mechanism of soil slope was put forward. According to the term that the rate of work done by external loads and soil weight is equal to the rate of the energy dissipation in the kinemafically admissible velocity field,the virtual work rate equation was deduced.With the equation,the safety factor of slope stability can be calculated.