基于积分法的均质边坡稳定性区间分析  

Interval analysis of homogeneous slope stability based on integral method

作　　者：冯欣[1,2] 熊子正 滕志强[1,2] 蔡征龙[1,2] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098

出　　处：《水资源与水工程学报》2017年第1期192-196,共5页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金项目(51409082);"十二五"国家科技支撑计划项目(2013BAB06B01)

摘　　要：为了考虑岩土体材料自身强度参数的随机性对边坡稳定性的影响,采用边坡稳定积分法代替传统条分法,避免了条分法中土条数目不同带来的计算误差,并利用区间分析理论,充分考虑岩土体抗剪强度参数的随机性,得出了土体参数在一定范围内变化情况下的区间安全系数表达式及浸水条件下边坡的区间安全系数表达式,并通过Matlab语言进行程序的编制。计算算例表明:常规方法求得的安全系数包含在此方法所求的区间范围内,体现了此方法对均质边坡的计算结果正确合理,得出的区间结果具有一定的实际工程意义。In order to consider the influences of strength parameterg randomness of rock-soil body materials on slope stability, the traditional slice method was replaced by the slope stability integral method, which could avoid calculation errors caused by the different soil slices in the slice method. The interval a- nalysis theory was utilized with full consideration in the randomness of shear strength parameters of rocksoil body in order to obtain the equations of interval safety coefficient under a certain range of soil parameters and slope interval safety coefficient under the condition of submerging. The Matlab was used to compile the programs. The numerical example showed that, the safety factor obtained by the conventional method was included in the value range obtained by this method, which showed that the method was reasonable for the homogeneous slope, and the interval results were of practical engineering significance.

关 键 词：岩土边坡 均质边坡 边坡稳定性 积分法 区间分析 安全系数 

分 类 号：TV314[水利工程—水工结构工程] TV223