| 大跨城市隧道施工三维有限元分析 |
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| 引用本文： | 娄霜,李昊煜.大跨城市隧道施工三维有限元分析[J].交通标准化,2014(4):42-47,50. |
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| 作者姓名： | 娄霜 李昊煜 |
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| 作者单位： | 安徽交通职业技术学院;安徽省交通规划设计研究院有限公司; |
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| 摘 要： | 针对城市大跨度隧道施工特点，考虑材料和几何非线性的影响，基于大型有限元分析软件Midas GTS，建立结构与围岩连成的三维弹塑性大变形计算分析模型，模拟隧道施工的过程，得出了隧道开挖不同阶段的围岩应力、变形的分布状态，据此对隧道稳定性进行评价。通过开挖过程的三维数值模拟，可了解大跨度隧道围岩应力分布、支护受力状态，剖析施工过程对围岩稳定的影响，从而为采取合理的措施调整支护参数提供重要依据和参考。
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| 关 键 词： | 大跨城市隧道 施工效应 围岩 数值模拟 Midas GTS |
Three Dimentional Finite Element Analysis on Big-Span City Tunnel Excavation |
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| LOU Shuang,LI Hao-yu.Three Dimentional Finite Element Analysis on Big-Span City Tunnel Excavation[J].Communications Standardization,2014(4):42-47,50. |
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| Authors: | LOU Shuang LI Hao-yu |
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| Institution: | 1.Anhui Communications Vocational ＆ Technical College, Hefei 230051, China; 2. Anhui Transport Consulting ＆ Design Institute Co., Ltd., Hefei 230000, China) |
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| Abstract: | According to the features of excavation of big-span city tunnel, an elasto-plastical large defor-mation finite element analysis model considering the nonlinearity of material and geometry is established based on the general FEA program Midas GTS. By simulating of excavation, stress, deformation state of surrounding rocks at various phases are given. Stability of tunnel is evaluated. By the 3D simulation of ex-cavation process, distribution of stresses and support are known and influence on stability of surrounding rock in construction are analvzed, which nmvides imnortant references for adjusting support parameters. |
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| Keywords: | big-span city tunnel construction effect surrounding rock numerical simulation Midas GTS |
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