基于单纯形-有限随机追踪法的边坡稳定性分析

Stability Analysis of Soil Slope Based on Simplex-Finite Stochastic Tracking Method

有限随机追踪法在边坡稳定性分析中的全局搜索能力,为边坡稳定性分析提供了新的思想。本文主要将单纯形法的局部搜索能力与有限随机追踪法的全局搜索能力有机结合起来,形成单纯形-有限随机追踪法优化算法,并利用改进Bishop算法对边坡进行稳定性分析,最终得到边坡稳定性系数的全局最优解。依据上述思想编制了边坡稳定性分析程序,并对边坡工程进行稳定性分析与评价。研究结果表明:根据单纯形-有限随机追踪法优化算法计算得到的边坡稳定性系数是全局最优解,具有较高的精度,单纯形-有限随机追踪法优化算法具有较强的全局搜索能力,分析结果可靠。

A new idea that uses the global search ability of finite stochastic tracking method in the slop stability analysis was proposed. The so-named simplex-finite stochastic tracking optimization algorithm is constructed from the simplex algorithm and the finite stochastic tracking method,and combined with the improved Bishop method to analyze the stability of the slope,and finally to get the global optimal solution with slope stability coefficient. We have developed the slope stability analysis program according to the above idea,and we analyzed and evaluated the stability of a slope project based on the program. The results showed that the solution of simplex-finite stochastic tracking optimization algorithm was a global optimum solution with the precise safety factor. The simplex-finite stochastic tracking optimization algorithm has stronger global search capability and is much more reliable for the stability analysis of the slope.