| 盾构隧道的开挖模拟及地震反应数值分析 |
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| 引用本文： | 沈慧,迟世春.盾构隧道的开挖模拟及地震反应数值分析[J].防灾减灾工程学报,2007,27(3):284-289. |
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| 作者姓名： | 沈慧 迟世春 |
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| 作者单位： | 大连理工大学海岸与近海工程国家重点实验室,辽宁,大连,116024 |
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| 基金项目： | 辽宁省自然科学基金资助项目(209029) |
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| 摘 要： | 由于盾构隧道掘进的特殊施工工艺,使开挖模拟的数值计算存在着诸多难以量化的因素。采用应力释放法模拟盾构隧道的开挖,在衬砌和土体之间设置等代层单元模拟盾构施工的影响,求得竣工期的应力场和位移场。在静力计算基础上运用动力有限元时程分析法,采用粘性人工边界条件,分析了隧道衬砌在地震过程中的最大响应。其结果和规律可为一般的盾构隧道地震反应分析提供借鉴。
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| 关 键 词： | 盾构隧道 开挖模拟 地震反应 三维非线性有限元 粘性边界 |
| 文章编号： | 1672-2132（2007）03-0284-06 |
| 修稿时间： | 2006-09-302006-12-12 |
Excavation Simulation and Numerical Analysis of Earthquake Response of Shield Tunnel |
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| SHEN Hui,CHI Shi-chun.Excavation Simulation and Numerical Analysis of Earthquake Response of Shield Tunnel[J].Journal of Disaster Prevent and Mitigation Eng,2007,27(3):284-289. |
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| Authors: | SHEN Hui CHI Shi-chun |
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| Institution: | State Key Lab of the Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | Because of the special construction process of shield tunnel,there are several factors difficult to estimate in the simulation of excavation.In this article,based on stress-releasing method,setting equivalent circle element between soil and lining to simulate the influence of shield tunnel construction,the stress and displacement distribution are determined.Furthermore,time history analysis of 3D dynamic nonlinear FEM with viscous boundary is adopted to research the earthquake response of lining.The maximum response of the lining is obtained.The paper reaches some beneficial rules and conclusions,which can provide reference and argument for seismic analysis of some general shield tunnels. |
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| Keywords: | shield tunnel simulation of excavation earthquake response 3D nonlinear FEM viscous boundary |
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