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针对任意形状的滑裂面,基于摩尔-库伦强度准则计算滑面上的剪应力,进而提出一种新的剪切势能计算方式,改进了基于最小势能原理的均质边坡稳定性分析方法。为验证其合理性和适用性,将其与Bishop法进行对比。结果表明:改进后的最小势能法是可行且合理的,可用于边坡的稳定性评价;滑体中剪切势能对坡体的稳定安全系数有影响,且增大了其稳定安全系数;该方法无需迭代,计算过程简便,便于在工程中推广应用。
For any shape of sliding surface, the shear stress on the sliding surface is calculated based on the Mohr - Coulomb strength criterion, and a new calculation method of shear potential energy is proposed. The method of homogeneous slope stability based on the principle of minimum potential energy is improved. To verify its rationality and applicability, it is compared with the Bishop method. The results show that the improved minimum potential energy method is feasible and reasonable and can be used to evaluate the stability of slopes. The shear potential energy in the sliding bodies has an impact on the stability safety factor of the slope and increases its stability safety factor. The method does not need iteration, the calculation process is simple, and it is easy to popularize and apply in the project.