基于独立覆盖流形方法与矢量和方法的边坡稳定性分析

发布时间：2019-05-21 07:53

【摘要】：提出一种基于独立覆盖流形方法(independent cover manifold method,ICMM)和矢量和方法的边坡稳定性分析方法。该方法采用ICMM计算边坡岩土体的应力场,避免了有限元及传统流形方法复杂的前处理过程,可以方便地计算含节理断层等不连续面的复杂边坡的应力状态。在此基础上,采用矢量和方法计算潜在滑裂面的安全系数,矢量和方法基于边坡的真实应力状态和力的矢量特征,物理意义明确,而且不需要类似强度折减法的迭代计算,计算代价小。同时采用模拟退火遗传算法进行优化搜索,得到边坡的临界滑裂面。提出方法结合以上优点,可以高效精确地计算含有节理断层的复杂边坡的临界滑裂面和安全系数。4个代表性算例以及工程案例的分析应用验证了提出方法的有效性和精确性。
[Abstract]:A slope stability analysis method based on independent covering manifold method (independent cover manifold method,ICMM) and vector sum method is proposed. In this method, ICMM is used to calculate the stress field of slope rock and soil, which avoids the complex pretreatment process of finite element method and traditional manifolds method, and can conveniently calculate the stress state of complex slope with discontinuity surface such as joint fault. On this basis, the vector sum method is used to calculate the safety factor of the potential slip surface. The vector and method are based on the real stress state of the slope and the vector characteristics of the force, the physical meaning is clear, and there is no need for iterative calculation similar to the strength reduction method. The calculation cost is small. At the same time, simulated annealing genetic algorithm is used to optimize the search, and the critical slip surface of the slope is obtained. Combined with the above advantages, the method can calculate the critical slip surface and safety factor of complex slope with joint fault efficiently and accurately. The effectiveness and accuracy of the proposed method are verified by the analysis and application of four representative examples and engineering cases.
【作者单位】：同济大学土木工程学院;同济大学土木工程防灾国家重点实验室;
【基金】：“十二五”国家科技支撑计划项目(2011BAB08B01)~~
【分类号】：TU43

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