极端冰雪灾害条件下边坡可靠度分析  

Reliability Analysis of Slope under Conditions of Extreme Snow Disaster

作　　者：郭利娜[1] 李同春[1] 刘晓青[1] 牛志伟[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2011年第8期103-105,213,共4页Water Resources and Power

基　　金："十一五"国家科技支撑计划基金资助项目(2008BAC47B02)

摘　　要：以极端冰雪灾害为例,选取对边坡稳定影响最明显的几种因素,通过正交试验,并采用简化的Bishop法计算边坡安全系数,通过线性回归获得计算边坡可靠度的极限状态方程的显式表达式,计算并分析了边坡在不同工况下的可靠度。所得结论可为灾害预防提供参考。Taking the extreme snow disaster for an example, several factors influenced on slope stability is selected and the simplified Bishop method is applied to calculate slope safety coefficient with orthogonal test. Then the explicit for- mula of slope reliability limit state equation is obtained by using linear regression method. Finally, slope reliahility under different working conditions is calculated and analyzed, which can provide reference for future disaster prevention.

关 键 词：极端冰雪灾害 边坡 可靠度 正交试验 

分 类 号：TU457[建筑科学—岩土工程]