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放弃了传统简化Bishop法的整体力矩平衡条件的假设。根据土体沿滑动面极限平衡的充分必要条件定义滑动稳定安全系数,使简化Bishop法适用于任意形状的潜在滑动面。给出了适用于任意形状滑动面的简化Bishop法的安全系数计算方法以及相应的最危险滑动面的搜索方法。计算结果表明本文方法具有较高精度,且滑动面位置符合实际,该方法可以应用于实际工程的边坡稳定分析。改进的方法概念简明,计算简单,适用性强。
Abandon the assumption of the traditional simplified Bishop method of the overall moment balance. The sliding stability safety factor is defined according to the necessary and sufficient condition that the soil equilibrates along the limit of sliding surface so that the simplified Bishop method can be applied to the potential sliding surface with arbitrary shape. The method to calculate the safety factor and the corresponding search method of the most dangerous slip surface are given for the simplified Bishop method. The calculation results show that the proposed method has high accuracy and the sliding surface position is in accordance with the actual situation. This method can be applied to slope stability analysis of practical engineering. The improved method is simple in concept, simple in calculation and strong in applicability.