| 基坑开挖引起下部地铁隧道变形控制研究 |
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| 引用本文： | 刘杰,吴超平,钱德玲,陈震,胡亮,梁中.基坑开挖引起下部地铁隧道变形控制研究[J].合肥工业大学学报(自然科学版),2012(2):247-251. |
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| 作者姓名： | 刘杰 吴超平 钱德玲 陈震 胡亮 梁中 |
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| 作者单位： | 合肥工业大学土木与水利工程学院;中国中铁四局集团 |
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| 基金项目： | 合肥工业大学产学研校企合作资助项目(09-9) |
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| 摘 要： | 以南京上跨地铁隧道的基坑工程为背景,文章运用MIDAS GTS软件建立三维数值分析模型,对基坑施工进行全过程动态模拟,计算结果与工程监测数据基本吻合;通过理论分析和数值模拟计算得出了基坑开挖过程中影响运营隧道变形的关键因素,计算结果表明,基坑开挖不可避免地引起坑底土体发生变位,带动土体中的隧道产生位移;探讨了减少基坑开挖对紧邻地铁隧道影响的控制措施。
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| 关 键 词： | 基坑开挖 运营隧道 变形研究 模拟计算 |
Control of excavation caused deformation of lower subway tunnel |
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| LIU Jie,WU Chao-ping,QIAN De-ling,CHEN Zhen,HU Liang,LIANG Zhong.Control of excavation caused deformation of lower subway tunnel[J].Journal of Hefei University of Technology(Natural Science),2012(2):247-251. |
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| Authors: | LIU Jie WU Chao-ping QIAN De-ling CHEN Zhen HU Liang LIANG Zhong |
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| Institution: | 1(1.School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;2.China Tiesiju Civil Engineering Group Co.,Ltd.,Hefei 230000,China) |
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| Abstract: | Based on the practice of deep excavation adjacent to the subway tunnel in Nanjing,the software MIDAS GTS is employed to establish a numerical model to simulate the whole dynamic process of the deep excavation.The calculated results show good agreement with the field measurements.The key factors influencing the operating tunnel deformation during the excavation are analyzed through theoretical analysis and numerical simulation calculation.The results show that the excavation causes the displacement of the soil at the bottom of pit inevitably,which results in the tunnel displacement.The measures to reduce the influence of the excavation on the adjacent subway tunnel are discussed. |
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| Keywords: | excavation operating tunnel deformation control simulation calculation |
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