土钉支护结构有限元法变形与破坏数值模拟分析

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英文篇名：Deformation and Destruction Value Analogy Analyses for Soil Nail Support by Finite Element Method 中文刊名：探矿工程(岩土钻掘工程) 英文刊名：Exploration Engineering(Rock & Soil Drilling and Tunneling) 作者：秦四清 ; 陈辉 ; 张明中 英文作者：QIN Si-qing1 ; CHEN Hui2 ; ZHANG Ming-zhong2(1.Institute of Geology and Geophysics of CAS ; Beijing 100029 ; China ; 2.Beijing Building Material Geotechnical Engineering Co. ; Beijing 100102 ; China) 中文关键词：土钉支护 ; 有限元 ; 数值模拟 ; 水平位移 ; 沉降 ; 张拉区与塑性区 ; 隆起 英文关键词：soil nail support ; finite element ; value analogy ; horizontal displacement ; subsidence ; tension and plasticity area ; hoove-up 出版日期：2005-09-30 机构：中国科学院地质与地球物理研究所,北京建材地质工程公司,北京建材地质工程公司 北京100029,北京100102,北京100102 年：2005 期：S1 出版单位：探矿工程(岩土钻掘工程)

摘要

用SnEpFem土钉墙有限元数值分析系统,对土钉支护结构进行变形与破坏的数值模拟分析,对土钉支护结构的可靠性进行合理评价。此系统可对坡面水平位移、坡顶沉降及沉降范围、坑底隆起、张拉区和塑性区的作用机制进行全面分析,也可模拟施工中每一步开挖过程并给出坡体的变形与破坏情况。通过对某基坑土钉支护结构的工程实例数值模拟分析,计算得到的坡面最大变形与实际监测的变形数据相比较,二者相差很小,充分证明了SnDpFem土钉墙有限元分析系统的可靠性。
The deformation and destruction of soil nail support structure were analyzed with value analogy,and the reliability of soil nail support structure was evaluated,by SnEpFem Soil Nail Wall Finite Element Value Analysis System.The system can completely analyze horizontal displacement of slope surface,subsidence of slope top and subsidence range dimension,pit bottom hooving-up,and reaction mechanisms of tension area and plasticity area.The system also can simulate the deformation and destruction of slope body which occurred in each step during construction.The comparison of deformation data between calculation and actually monitoring shown that the difference is small.That proved the reliability of SnEpFem Soil Nail Wall Finite Element Value Analysis System.

引文

[1]秦四清,王建党,王清,等.土钉支护机理与优化设计[M].北京:地质出版社,1999.
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    [3]Goodman,R.E.,Taylor R/L/,Brekke,T.L.A model for the mechani of jointed rock[J].Journal of soil mechani and founda-tion division,ASCE,1968,94:1121-1129.
    [4]Desai,C.S.,Zaman,M.M.Thin-layer element for interfaces and joints[J].International Journal of numerical and analytical methods in Geomechani,1984,8:1101-1110.