单一地层任意滑移面的最小势能边坡稳定性分析方法

Minimal potential energy method for analyzing slope stability of arbitrary sliding surface on a single stratum

边坡稳定性分析的准确与否是深基坑是否失稳的关键所在。目前常用的计算方法需对滑裂面形状进行假设,且计算过程复杂,往往导致结果精度降低。提出运用最小势能法进行深基坑边坡稳定性分析,不对滑裂面的形状进行任何的近似假定。在对简单的匀质任意滑裂面边坡进行理论分析基础上,通过计算实例进行验证,表明该方法所得计算结果与其他常用方法计算结果比较接近,验证了方法的有效性,而且最小势能法的计算过程非常简单,无需迭代。

Accuracy of the slope stability analysis is the key to ensure the stability of deep foundation pit. At present, the common calculation methods used to assume the shape of the sliding surface, and the calculation process is so complex that accuracy of results is decrease. Without any similar assumptions on shape of sliding surface, a minimal potential energy method is used to analyze the stability of deep foundation pit slope. Based on the theoretical analysis of simple homogeneous arbitrary sliding surface slope, it turns out that calculation results attained through the verification of calculation example are relatively close to results from other common methods; and effectiveness of the method is validated. What is more, calculation is simple without iterative process.