| 隧道施工对既有地下通道影响三维有限元分析 |
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| 引用本文： | 赵春荣,崔炜.隧道施工对既有地下通道影响三维有限元分析[J].北京工业职业技术学院学报,2009,8(1):37-39. |
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| 作者姓名： | 赵春荣 崔炜 |
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| 作者单位： | 北京工业职业技术学院,北京,100042;中国水利水电科学研究院,北京,100038 |
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| 摘 要： | 应用三维有限元程序，考虑地下通道非柔性结构及其结构缝的存在，结合某城市地下通道之下的隧道暗挖实例，模拟隧道断面分步开挖、超前加固、初期支护、接近既有结构施工的复杂空间过程。有限元分析过程显示：采用三维有限元法模拟隧道施工对现有结构的影响，可得到与实际施工更为接近的结构沉降与应力结果，从而为隧道结构设计提供更准确的依据。同时模拟分析还表明：通道项部地表和底板的沉降非常接近，可依据通道底板的拉应力增量，参考通道结构在隧道施工前的应力状态评价通道安全。
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| 关 键 词： | 隧道施工 地下通道 三维有限元分析 |
Three-dimensional Finite Element Analysis on Impact of Tunnel Excavation on Underground Channel |
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| Zhao Chunrong,Cui Wei.Three-dimensional Finite Element Analysis on Impact of Tunnel Excavation on Underground Channel[J].Journal of beijing vocational & technical institute of industry,2009,8(1):37-39. |
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| Authors: | Zhao Chunrong Cui Wei |
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| Institution: | 1.Beijing Polytechnic College;Beijing 100042;China;2.China Institute of Water Resources and Hydropower Research;Beijing 100038;China |
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| Abstract: | This paper analyses a tunnel being dug below the underground channel with a three-dimensional finite element analysis method,considering its non flexible structure properties and its structural joint existence.The step by step excavation,the advance reinforcement,the preliminary bracing and the construction near the existing structure processes are simulated using the 3-D FEM.The process shows that we can get the more exact solution close to the practice project on the structure settlement and stress with t... |
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| Keywords: | tunnel excavation underground channel three-dimensional finite element analysis |
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