基于条分模式的边坡可靠度近似计算方法  

Approximate Calculation Method of Slope Reliability Degree Based on Slice Mode

作　　者：颜永国[1] 陈健[1] 

机构地区：[1]中交四航工程研究院有限公司,广州510230

出　　处：《防灾减灾工程学报》2010年第3期315-319,共5页Journal of Disaster Prevention and Mitigation Engineering

摘　　要：通过对边坡稳定分析方法中的条分理论和响应面法的研究,针对边坡可靠性计算往往没有明确的解析表达式,以及稳定性系数计算方法和响应面法(RSM)的特点,将响应面法中的有限元数值模拟以条分模式中的稳定性系数隐式方程的迭代计算方法代替,建立了条分模式下的边坡可靠性计算的极限状态方程,从而形成了一种新的边坡稳定可靠性响应面分析方法。本文提出的改进的响应面法原理简单,计算效率较高并具有一定的精度,适用于对边坡可靠度的近似计算。Through the research of slope stability analysis method on slice mode and response surface method,finite element method in response surface method（RSM） is replaced by iterative calculation process of implicit stability coefficient expression on slice mode,aiming at the absent of explicit expression in slope reliability calculation and the specialty of stability coefficient calculation method and classical response surface method.Then the limit state equation of slope reliability analysis is confirmed on slice mode.Combining classical response surface method with the stability analysis method,a new method for slope stability reliability analysis is established.And then,the paper makes the method be stability analysis system that can deal with circle and non-circle slide surface under many soil layers.The IRSM brought forward in this paper has simple theory,high computational efficiency and also high precision in some degree.So the method is applicable to slope reliability approximate calculation.

关 键 词：边坡稳定性系数 条分模式 响应面法 可靠度 

分 类 号：TU413.62[建筑科学—岩土工程]