| 盾构隧道近接下穿既有地铁车站的数值模拟 |
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| 引用本文： | 王法,陶连金,赵艳.盾构隧道近接下穿既有地铁车站的数值模拟[J].佳木斯大学学报,2009,27(2). |
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| 作者姓名： | 王法 陶连金 赵艳 |
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| 作者单位： | 王法,WANG Fa(北京市勘察设计研究院有限公司,北京,100038);陶连金,TAO Lian-jin(北京工业大学建筑工程学院,北京,100022);赵艳,ZHAO Yan(佳木斯大学,黑龙江,佳木斯,154007)
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| 基金项目： | 北京市自然科学基金，北京市教育委员会科技发展基金重点项目，北京市科技计划项目，北京市优秀人才培养资助项目，手机媒体的发展与管理探析研究项目 |
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| 摘 要： | 以北京某盾构法施工的区间隧道下穿附近既有地铁车站工程为背景,在确定了合理的应力释放率并充分考虑了分步开挖及注浆加固区影响的基础上,采用三维有限差分计算软件FLAC3D进行了数值模拟.模型采用地层-结构模型,土体采用摩尔-库仑弹塑性模型.此外,隧道和车站结构采用结构单元模拟,既有车站变形缝采用连接单元模拟.预测盾构隧道施工后既有地铁车站的变形,为邻近既有车站的安全评估工作提供了依据.
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| 关 键 词： | 盾构隧道 分步开挖 应力施放 数值模拟 |
Numerical Simulation of Shield Tunnel Passing under the Existing Subway Station |
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| WANG Fa,TAO Lian-jin,ZHAO Yan.Numerical Simulation of Shield Tunnel Passing under the Existing Subway Station[J].Journal of Jiamusi University(Natural Science Edition),2009,27(2). |
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| Authors: | WANG Fa TAO Lian-jin ZHAO Yan |
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| Institution: | 1.BGI Engineering Consultants LTD.;Beijing 100038;China;2.College of Civil and Architecture Engineering;Beijing University of Technology;Beijing 100022;3.College of Civil and Architecture Engineering;Jiamusi University;Jiamusi 154007;China |
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| Abstract: | Based on the shield tunnel of a newly constructed line that crosses underneath the existing subway station in Beijing,concerning on the stress release method,step excavation and the pre-reinforced construction of the newly constructed line,the displacement influence is analyzed by a three-dimensional finite-difference program FLAC3D.By means of FLAC3D simulation a layer-structure model is established,and the Mohr-Coulomb criterion is used to describe the soil.Besides,the tunnel structure and the existing su... |
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| Keywords: | FLAC3D |
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