Locating Global Critical Slip Surface Using the Morgenstern-Price Method and Optimization Technique
Locating Global Critical Slip Surface Using the Morgenstern-Price Method and Optimization Technique
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DOI：
10.1061/(asce)gm.1943-5622.0000312
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发表时间：
2014-04
影响因子：
3.7
通讯作者：
T. Bai;T. Qiu;Xiaoming Huang;Chang Li
中科院分区：
文献类型：
--
作者：
T. Bai;T. Qiu;Xiaoming Huang;Chang Li
本文提出了一种确定复杂地质条件下边坡整体临界滑动面的方法。在该方法中，一个现成的简洁算法的基础上Morgenstern-Price方法被用来有效地计算安全系数的滑动面。该算法结合优化技术，以一组随机初始滑动面为基础搜索全局临界滑动面。所提出的方法被应用到分析三个例子的问题，涉及不同程度的复杂性的斜坡剖面。研究结果表明，对于中低复杂度的边坡，无论初始滑动面如何，所提出的全局搜索策略都能找到全局临界滑动面。然而，对于更复杂的地质边坡剖面，建议的搜索策略可能只能识别局部临界滑动面取决于初始滑动面。为了确保全局临界滑动面的识别，更多的随机初始化。
AbstractThis paper presents a method to locate the global critical slip surface for slope profiles with complex geology. In this method, a readily available concise algorithm based on the Morgenstern-Price method is used to efficiently calculate the factor of safety for a slip surface. This algorithm is combined with an optimization technique to search for global critical slip surfaces based on a set of random initial slip surfaces. The proposed method is applied to analyze three example problems involving slope profiles with various degrees of complexity. This study indicates that the proposed global search strategy can locate the global critical slip surface regardless of the initial slip surface for slope profiles with low to moderate complexity. For more complex geologic slope profiles, however, the proposed search strategy may only be able to identify locally critical slip surfaces depending on the initial slip surface. To ensure that the global critical slip surfaces are identified, more random init...