【摘要】 提出了一种适用于均质粘性土坡的定积分解法 ,用实用的优化方法计算土坡稳定的可靠度指标 ,并分析了土坡可靠度的一些规律。所用计算公式直接在基本变量空间求解 ,避免了求偏导数和正交变换工作。由于稳定分析时最危险滑弧事先并不知道 ,因此用优化方法求可靠度指标具有巨大优越性。利用 Excel中的规划求解器求解了安全系数和可靠度指标。更多还原

【Abstract】 Some integration formulae which are suitable to analyzing the homogeneous soil slope are put forward, a practical optimal method is used for calculating the reliability index, and some regularity in the reliability analysis of stability of soil slopes is discussed. The formula of reliability index is calculated in the origin space directly, so derivation and orthogonal transformation are avoided. In comparison with the limit equilibrium analysis in which the searching of critical slip arc is needed, using the optimal method to obtain the reliability index has notable advantages. The Microsoft Excel’s Solver is used for calculating the safety factor and the reliability index.更多还原