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针对传统强度折减点安全系数取值的局限性以及对多参数准则无法普遍适用的缺陷,引入应力点极半径以及临界极半径的概念,给出了通用强度折减点安全系数的定义及其计算方法。以某堤防工程为例,计算传统的刚体极限平衡法和有限元弹塑性极限分析法下的土坡整体安全系数进行比较,考察该方法在土坡稳定分析中的适用性。
In view of the limitation of the value of the safety factor of the traditional strength reduction point and the defect that the multi-parameter criterion can not be universally applied, the concept of stress point polar radius and critical polar radius is introduced, and the definition of safety factor of common strength reduction point and its Calculation method. Taking a dike project as an example, the comparison between the traditional rigid body limit equilibrium method and the finite element elasto - plastic limit analysis method is carried out, and the applicability of this method in the stability analysis of soil slopes is investigated.