| 盾构隧道纵向地震响应分析 |
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| 引用本文： | 耿萍,何川,晏启祥.盾构隧道纵向地震响应分析[J].西南交通大学学报,2007,42(3):283-287. |
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| 作者姓名： | 耿萍 何川 晏启祥 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 国家高技术研究发展计划（863计划）专项资助项目（2006AA11Z116） |
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| 摘 要： | 为了探讨盾构隧道的纵向地震响应特性，采用地层一隧道整体三维有限元模型，对武汉长江越江盾构隧道的地震响应进行了分析，主要研究了合理的盾构隧道力学模型、隧道与地层之间的相互作用以及隧道的振动特性．通过隧道与地层的整体分析，得到了盾构隧道位移和应力的分布及其随时间的变化曲线．计算结果表明：压缩波引起的纵向拉、压应力和剪切波引起的扭曲变形是隧道抗震设计的关键．
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| 关 键 词： | 盾构隧道 三维有限元法 地震响应分析 |
| 文章编号： | 0258-2724（2007）03-0283-05 |
| 修稿时间： | 2006-04-20 |
Analysis of Longitudinal Seismic Response of Shield Tunnel |
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| GENG Ping,HE Chuan,YAN Qixiang.Analysis of Longitudinal Seismic Response of Shield Tunnel[J].Journal of Southwest Jiaotong University,2007,42(3):283-287. |
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| Authors: | GENG Ping HE Chuan YAN Qixiang |
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| Institution: | School of Civil Eng. , Southwest Jiaotong University, Chengdu 610031 ,China |
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| Abstract: | In order to investigate the characteristics of longitudinal seismic response of shield tunnels, the seismic response of a shield tunnel across the Yangtze River in Wuhan was investigated with a three-dimensional finite element model for ground-tunnel interaction. The investigation mainly concerns the reasonable mechanics model, the interaction between tunnel and ground, and the vibration characteristics of tunnels. The research obtains the distribution of displacement and stress and their time-dependent curves. The numerical results show that the key points in the aseismatic design of tunnels are the tension and compression stresses in the longitudinal direction of tunnels under a compression wave and the torsional displacement of tunnels under a shear wave. |
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| Keywords: | shield tunnel 3-D finite element method seismic response analysis |
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