不同极限平衡法确定边坡安全系数的比较与分析

Comparison and Analysis of Slope Safety Factor by Different Limit Equilibrium Methods

现行规范中关于安全系数的取值主要是根据工程等级和计算工况确定,对计算方法的区分过于笼统。为分析按不同极限平衡法分别确定的边坡安全系数值,结合30个均质边坡算例,通过统计分析不同极限平衡法稳定系数计算结果之间的关系,确定了不同方法安全系数取值之间应满足的关系。结果表明,不同极限平衡方法的稳定系数计算结果之间基本呈线性关系,各自安全系数的取值应满足相应的线性比例关系。

In general, the safety factor is determined by engineering grades and work conditions in current specifica- tions. However, it does not take the different computing methods into account. The purpose of this article is to compare and analyze the slope safety factors calculated by different limit equilibration methods with statistical analysis. The results obtained from 30 homogeneous slopes demonstrate that it is generally linear correlation of any two stability coefficients ac- quired by different limit equilibration methods, respectively. In addition, any two safety factors calculated using various limit equilibration methods should meet the linear relation.