黄土基坑复合土钉支护的有限元分析  

NONLINEAR FINITE ELEMENT ANALYSIS OF COMPOSITE SOIL NAILING IN LOESS EXCAVATION

作　　者：常光明[1,2] 俞宗卫[2] 戈海玉[1] 

机构地区：[1]皖西学院城市建设与环境系,安徽六安237012 [2]长安大学建筑工程学院,陕西西安710064

出　　处：《低温建筑技术》2008年第6期109-111,共3页Low Temperature Architecture Technology

基　　金：安徽省高校省级自然科学研究计划重点项目(KJ2008A143);安徽省教育厅青年教师科研资助计划项目(2007jql181);皖西学院自然科学青年研究项目(wxzq2006018)

摘　　要：由于黄土的结构性和湿陷性,黄土基坑具有与其它基坑不同的特点。为了研究黄土基坑复合土钉支护的工作机理和设计方法,选取适当的本构模型,考虑土体与土钉(锚杆)的共同作用和基坑开挖施工过程,运用Ansys软件对某黄土基坑的变形和安全系数进行了非线性有限元分析,提出了合理的有限元模型,并将计算结果与工程实测数据进行了对比分析。The loess excavations have its characteristics comparing with the others due to its structural property and collapsibility. In order to acquire the work mechanism and design methods of composite soil - nailing in loess excavations, a reasonable finite element analysis model is selected. The deformations and safety factors are studied by nonlinear finite element analysis using ANSYS program. The influence of co - operation of soil and soil - nailing or bolt together, and construction process are considered. The reasonable finite element model and meshing are set up. Finally, the results are validated contrasting with the data measured in an actual project.

关 键 词：黄土基坑 复合土钉支护 有限元分析 

分 类 号：TU473[建筑科学—结构工程]