中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2009, Vol. 28 ›› Issue (6): 1088-1091.DOI: 10.3969/j.issn.1674-0696.2009.06.29

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土工格栅加筋土挡墙施工工况有限元分析

陈??华1,2,赵有明1,张发春2   

  1. 1.中国铁道科学研究院铁道建筑研究所,北京100081;2.云南省交通规划设计研究院,云南昆明650011
  • 收稿日期:2009-09-24 修回日期:2009-10-20 出版日期:2009-12-15 发布日期:2015-04-15
  • 作者简介:陈??华(1973—),男,云南昭通人,博士研究生,主要从事边坡稳定和支挡结构方面的研究工作。E-mail:kjcchenhua@126.com。
  • 基金资助:
    交通部西部交通建设科技项目( 2003-318-799-17)

Finite?Element?Analysis?on?Geo-grid?Reinforced?Earth?Retaining?Wall?at?Construction?Stages

CHEN Hua1, 2, ZHAO You-ming1, ZHANG Fa-chun2   

  1. 1.?Railway?Engineering?Research?Institute,?Chinese?Academy?of?Railway?Sciences,?Beijing?100081,?China;?2.?Yunnan?Provincial?Planning?&?Design?Research?Institute?of?Co?mmunications,Yunnan?Kunming?650011,?China
  • Received:2009-09-24 Revised:2009-10-20 Online:2009-12-15 Published:2015-04-15

摘要: 介绍了土工格栅加筋土挡墙的结构特征,及土工格栅加筋土的有限元分析原理,并用Mohr??Coulomb模型作为 加筋土中的土体的计算模型,用线弹性模型模拟土工格栅,用Goodman单元模拟土体和土工格栅之间的接触关系, 对一典型工程实例的施工状态进行了有限元分析,得到了土工格栅加筋土挡墙不同施工阶段的受力和变形特征。 计算结果表明,加筋土挡墙的破裂面是一条圆弧面,挡墙在填土过程中安全系数逐渐减小,基底应力分布和筋材拉 力与实测值吻合较好,证明了该有限元分析方法的可靠性。

关键词: 加筋土挡墙, 有限元, 破裂面, 施工期, 应力分布

Abstract: The?structural?characteristics?of?the?geo-grid?reinforced?earth?retaining?wall?are?introduced?at?first,and?the?finite?element?method?(FEM)?used?in?the?geo-grid?reinforced?earth?retaining?wall?is?also?given.?In?this?finite?element?method,?Mohr-Coulomb?model?is?used?to?simulate?the?computation?model?of?soil,?the?linear-elastic?model?is?applied?to?simulate?the?geogrid?and?Goodman?model?is?adopted?to?simulate?the?relationship?between?the?soil?and?the?geo-grid.?The?construction?situation?of?one?typical?engineering?example?is?analyzed?by?FEM,?and?the?stress?distribution?and?deformation?features?of?geo-gfid?reinforced?earth?retaining?wall?at?different?construction?stages?are?obtained.?The?computation?result?shows?that?:the?failure?surface?at?geo-grid?reinforced?earth?retaining?wall?is?an?arc?surface,?and?the?safety?coefficients?decrease?gradually?with?the?soil?filling.?At?last,?the?stress?distribution?of?floor?and?the?pull?of?reinforced?materials?are?accordance?with?the?data?of?field?measure,?which?verifies?the?reliability?of?FEM?proposed.

Key words: reinforced earth retaining wall , FEM , failure surface , construction stages , stress distribution

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