| 软岩隧道开挖方法数值模拟分析 |
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| 引用本文： | 张向东,刘严,孙闯.软岩隧道开挖方法数值模拟分析[J].广西大学学报(自然科学版),2010,35(1). |
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| 作者姓名： | 张向东 刘严 孙闯 |
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| 作者单位： | 辽宁工程技术大学土木建筑工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家自然科学基金资助项目(50478033);;辽宁省高等学校优秀人才支持计划项目(2008RC23) |
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| 摘 要： | 论述了适用于纱帽山隧道Ⅴ级围岩的开挖方法,采用大型非线性有限元分析软件ADINA,对适用于双线分离式公路隧道Ⅴ级围岩的三种开挖施工方法进行数值模拟;运用ADINA自带的单元生死功能动态模拟开挖支护过程,对比左导洞先行开挖编制的施工工序、台阶分部开挖法和上下台阶留核心土法三种开挖方法,分析三种开挖方法对隧道变形的影响。结果表明:针对左导洞先行开挖编制的施工工序其中隔壁起到减跨作用,从而控制沉降;它与台阶分部开挖法在开挖后位移场分布基本是对称的,在量值上有略小差别,不会造成地表不均匀变形,不会影响洞室的稳定;台阶分部开挖法左侧地表变形略大于右侧,且差值大于针对左导洞先行开挖编制的施工工序。
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| 关 键 词： | 围岩 数值模拟 施工方法 位移场 |
Numerical analysis on tunnel excavating methods in soft rock |
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| ZHANG Xiang-dong,LIU Yan,SUN Chuang.Numerical analysis on tunnel excavating methods in soft rock[J].Journal of Guangxi University(Natural Science Edition),2010,35(1). |
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| Authors: | ZHANG Xiang-dong LIU Yan SUN Chuang |
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| Affiliation: | Institute of Architecture and Civi Engineering;Liaoning Technology University;Fuxin 123000;China |
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| Abstract: | The ADINA is used to investigate the excavating methods which are applicable to the V class surrounding rocks of the tunnel in Shamao Mountain and make a numerical simulation for three kinds of excavating methods which are applicable to bilinear separable highway tunnels. The func-tion of element birth and death of ADINA is used for dynamic simulation of excavation support process. Compared with these three excavating methods,the influences of the methods on the tunnel deformation are analyzed. The results ... |
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| Keywords: | surronding rock numerical simulation construction method displacement |
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