土钉支护边坡稳定的极限上限分析  

Upper limit analysis on stability of soil-nailed slope by slice techniques

作　　者：阙云[1] 胡昌斌[1] 

机构地区：[1]福州大学土木工程学院,福建福州350108

出　　处：《福州大学学报（自然科学版）》2009年第1期113-117,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省教育厅科研资助项目(JA08016);福州大学人才基金资助项目(XRC-0814)

摘　　要：为了完善土钉支护边坡稳定的极限分析设计方法,对土钉支护边坡稳定的极限分析计算方法进行研究.基于塑性极限分析上限定理,结合传统条分方法,建立了土钉支护边坡稳定性安全系数计算式.同时,采用该计算式与规范法分别探讨了重度、粘聚力、内摩擦角、土钉抗拔力以及土钉层数对边坡稳定性的影响.分析结果初步表明:本文公式与现行规范法分别构成了土钉支护边坡安全系数的上下限,可为综合评判土钉支护边坡的稳定性设计提供参考.In order to perfect the limit analysis design method of soil - nailed slope, limit analysis on stability calculation of soil - nailed slope was researched. Based on limit analysis plasticity theory and traditional slice method, a formula to calculate the safety factor in stability of soil - nailed slope was built. Then this formula and the Chinese specification method of soil - nailed slope were used separately to discuss the stability influence of the factors such as unit weight, cohesion, internal friction angle, anti - pull forces of soil nailing and layer numbers of soil nailing. The results preliminaryly indicate that the safe factor calculated by this formula is the upper limit of real solution, and the safe factor calculated by Chinese specification method is the lower limit of real solution. So, this formula can provide the reference for design of soil - nailed slope.

关 键 词：土钉支护边坡 稳定 塑性极限分析理论 条分法 

分 类 号：U213.13[交通运输工程—道路与铁道工程]