用斜条分法求解边坡稳定安全系数

With the Oblique Slice Method for Slope Stability Safety Factor

边坡稳定安全系数计算方法,一直采用竖直土条条分法。基于斜条分法计算的思路,根据斜土条条块力极限平衡条件,推导出边坡稳定安全系数Fs的代数表达式,取代了传统的积分或微分表达式,计算过程较为简化,收敛性能保证,只需要简单迭代即可快速得到解答。通过算例计算表明,这种方法得到的边坡稳定安全系数Fs与传统方法得到的边坡稳定安全系数Fs十分接近,证明此方法正确可行,能够方便边坡工程技术人员的掌握与应用。

Safety factor of slope stability is generally calculated via vertical earth slices method. In the shape of algebraic expression, this method derived from gradient slice method was designed to calculate slope stability safety factor Fs. It replaces the traditional integral or differential expression, and has advantages in computational process and convergence. The case study shows that slope stability safety factor Fs with this method is close to that with convertional method, which indicates that this method is feasible and suitable to facilitating the engineers and technicians to master and apply in engineering practice.