基于可靠性分析设计基坑土钉支护工程  

Design of foundation pit reinforced by soil nailing based on reliability analysis

作　　者：吴坤铭[1] 王建国[2] 郑志[1] 

机构地区：[1]皖西学院建筑与土木工程学院,安徽六安237012 [2]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2016年第6期818-822,共5页Journal of Hefei University of Technology：Natural Science

基　　金：安徽高校省级自然科学研究重点资助项目(KJ2014A278);安徽高校优秀青年人才支持计划重点资助项目(gxyqZD2016241);皖西学院校级自然科学研究资助项目(WXZR201626)

摘　　要：为了对基坑土钉支护工程进行合理的设计,文章建立基坑土钉支护极限状态功能函数,以可靠度理论为基础采用一阶可靠度分析方法进行可靠度计算,把计算参数视为随机变量,考虑参数变异性对基坑土钉支护可靠度的影响;可靠指标的选取考虑边坡工程等级,以目标可靠度为控制指标指导土钉支护设计。工程算例表明采用可靠性方法设计基坑土钉支护是合理的,具有一定的工程应用价值。In order to design the foundation pit reinforced by soil nailing rationally ,the limit state func-tions of foundation pit reinforced by soil nailing are established based on the reliability theory .Then the reliability indices are computed by using the first order reliability method ,and the calculated pa-rameters are regarded as random variables when considering the impact of different values of random variables on the reliability of foundation pit reinforced by soil nailing .The classification of foundation pit should be considered in selecting the reliability index ,and the target reliability is regarded as con-trol index to guide the design of the soil-nailing protection .The results of engineering examples show that the design of foundation pit reinforced by soil nailing based on reliability analysis is rational and useful for engineering applications .

关 键 词：基坑 土钉支护 可靠性分析 

分 类 号：TU432[建筑科学—岩土工程]