| Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load |
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| 引用本文： | DENG Fei-huang MO Hai-hong ZENG Qing-jun YANG Xiao-jie. Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load[J]. 中国矿业大学学报(英文版), 2006, 16(4): 509-513. DOI: 10.1016/S1006-1266(07)60058-3 |
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| 作者姓名： | DENG Fei-huang MO Hai-hong ZENG Qing-jun YANG Xiao-jie |
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| 作者单位： | [1]College of Architecture ＆ Civil Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China [2]School of Mechanics ＆ Civil engineering, China University of Mining ＆ Technology, Beijing 100083, China |
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| 摘 要： | 1 Introduction In recent years, with the development of traffic on ringroads around cities, more and more attention has been paid to the impact of this metro traffic oper- ating on lining structures and the environment. With the structure of the tunnel lining as the critical carrier and barrier in transmitting the vibrating load waves, the analysis of dynamic responses of tunnels is quite important. Some scientists have already made some investigations in this field. Zhang[1] studied the dy- n…
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| 关 键 词： | 隧道 衬里 有限元分析 列车 交通条件 |
| 收稿时间： | 2006-03-09 |
| 修稿时间： | 2006-04-27 |
Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load |
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| DENG Fei-huang,MO Hai-hong,ZENG Qing-jun,YANG Xiao-jie. Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load[J]. Journal of China University of Mining and Technology, 2006, 16(4): 509-513. DOI: 10.1016/S1006-1266(07)60058-3 |
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| Authors: | DENG Fei-huang MO Hai-hong ZENG Qing-jun YANG Xiao-jie |
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| Affiliation: | 1. College of Architecture & Civil Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China;2. School of Mechanics & Civil engineering, China University of Mining & Technology, Beijing 100083, China;1. School of Civil Engineering, Central South University, Changsha, Hunan 410075, China;2. China Construction Fifth Engineering Division CROP., Ltd., Changsha 410004, China;1. School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing 210009, PR China;1. School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China;2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;3. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;4. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;1. Department of Civil Engineering, Fuzhou University, Fuzhou 350108, China;2. Department of Civil Engineering, Key Laboratory of Soft Soils and Geoenvironmental Engineering, MOE, Zhejiang University, Hangzhou 310058, China;1. Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety, and Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China;2. Department of Civil Engineering, McMaster University, Hamilton, ON, Canada L8S 4L7;3. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | This paper concerns the impact of an operating metro train on the structure of a shield tunnel lining and its soft foundation. An elastoplastic 3D dynamic finite difference model was established by using the FLAC3D numerical software. By fully considering the joints, the A-B-K segments and the soft stratum, the dynamic response of the shield tunnel buried in thick, soft soil under the vibrating load induced by a metro train was numerically simulated. The simulation result, for which the joint was considered, was compared with the result when the joint was not considered. The results show that an operating metro train induces a significant dynamic response in the structure of the lining of the shield tunnel and its soft foundation. The severe dynamic response zones of the lining structure are largely distributed in the range of the lower half of the segment-ring and the nearer to the bottom of the segment-ring, the more severe the response. Of two horizontally symmetric, corresponding places on the segment lining, the one near the joint is more severe in its dynamic response than that of the one far from the joint; the nearer the zone of the foundation soil to the lower half of the segment-ring, the more severe the dynamic response. The maximum shear strain of the foundation soil takes place near the joint between two normal segments at the bottom. The dynamic response influenced by joints is more severe than the response not influenced by joints, showing that the non-joint assumption is somewhat impractical. |
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| Keywords: | dynamic response train vibrating load joint shield tunnel segment |
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