边坡抗滑稳定可靠性分析  

A Reliability Analysis for the Stability against Sliding of a Bank Slope

作　　者：章建军[1,2] 陈传尧[1,2] 揭敏[1,2] 徐年丰[1,2] 

机构地区：[1]长江水利委员会设计院 [2]华中理工大学力学系

出　　处：《华中理工大学学报》1997年第4期90-92,共3页Journal of Huazhong University of Science and Technology

摘　　要：为了利用一次二阶矩法计算边坡抗滑稳定的可靠指标，针对抗滑稳定分析中的条分法，提出了从极限条件出发，通过在边坡最上面一分条上施加一假想力，使得边坡整体处于极限平衡状态来构造用于Ｂｉｓｈｏｐ法进行可靠性分析的功能函数，并具体给出了基于Ｂｉｓｈｏｐ法进行可靠性的功能函数的推导过程，通过算例与用瑞典条分法、传递系数法进行可靠性分析的结果进行了比较。In order to utilize the one-degree-two-order matrix method and general slice methods to cal- culate the reliability index β for stability against sliding of a bank slope , a new approach is proposed. With .the limiting case in mind , a fictitious force E is assumed to be applied to the topmost slice to make the slope as a whole under a condition of limiting equilibrium. E is then used as the criterion function : if E>0 , the slope is stable : if E<0 , it is unstable , and if E = 0 , the slope is under the limit- ing condition. The function based on the Bishop method is E. An example is used to compare the re- sults of reliability analysis based on the Bishop method , Swedish slice method and the transfer coeffi- cient method. It has been found that the metric tendency or the reliability index is consistent with that of the factor of safety based on the three above-mentioned methods.

关 键 词：BISHOP法 可靠性 边坡工程 抗滑稳定性 

分 类 号：P642.22[天文地球—工程地质学]