DISTRIBUTION OF PLASTIC ZONES IN EXISTING TUNNEL DUE TO NEW CONSTRUCTION CLOSELY ABOVE THE TUNNEL AND THEIR MECHANISM AND REINFORCEMENT, A CASE STUDY IN BEIJING

FAN Yongbo; WU Faquan; HU Sherong; WU Chacha; REN Aiwu

Volume 16 Issue 2

Oct. 2010

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FAN Yongbo, WU Faquan, HU Sherong, WU Chacha, REN Aiwu. 2008: DISTRIBUTION OF PLASTIC ZONES IN EXISTING TUNNEL DUE TO NEW CONSTRUCTION CLOSELY ABOVE THE TUNNEL AND THEIR MECHANISM AND REINFORCEMENT, A CASE STUDY IN BEIJING. JOURNAL OF ENGINEERING GEOLOGY, 16(2): 268-272.

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DISTRIBUTION OF PLASTIC ZONES IN EXISTING TUNNEL DUE TO NEW CONSTRUCTION CLOSELY ABOVE THE TUNNEL AND THEIR MECHANISM AND REINFORCEMENT, A CASE STUDY IN BEIJING

1.
Key Laboratory of Engineering Geo mechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;
2.
China University of Mining &|Technology, Beijing 100083;
3.
Beijing Remote Sensing Corporation, Beijing 100085

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Received Date: 2007-03-06
Rev Recd Date: 2007-10-15
Publish Date: 2008-04-30

Abstract

Abstract

Building a new station closely above an existing tunnel is a relatively difficult problem in underground construction. This paper uses numerical simulation methods and analyzes the distribution of plastic zones in the tunnel of the No. 1 Subway Line during the above construction of the Dongdan station for the No. 5 Subway Line in Beijing. It found that the symmetrical andrectangular distribution of plastic zones for the large-span station floor s influenced by existing line. Changing extent of different parts were also found on the plastic zones of the existing tunnel under backfill, sandy soil, clay interbedding,. The plastic zone valuesabout the side face of the existing line are the largest. Simulation on the reinforcement scheme was also conducted to guarantee the stabilization of the surrounding ground.
- Plastic zone,
- Numerical analysis,
- Tunnel engineering,
- Metro-station,

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References

[1] 程桦,孙钧.软弱围岩复合式隧道衬砌力学机理非线性大变形数值分析
[J].岩石力学与工程学报,1997, 16 (4):327~336.
Cheng Hua, Sun Jun. Numerical analysis of nonlinear large deformation mechanism for complex tunnel lining in incompetent country-rock. Chinese Journal of Rock Mechanics and Engineering,1997, 16 (4):327~336.

[2] 陈先国,高波.重叠隧道的施工力学研究
[J].岩石力学与工程学报,2003, 22 (4):606~610.
Chen Xianguo,Gao Bo. Research on construction mechanics of overlapping tunnels. Chinese Journal of Rock Mechanics and Engineering,2003, 22 (4):607~609.

[3] 陈先国,高波.地铁近距离平行隧道有限元数值模拟
[J].岩石力学与工程学报,2002, 21 (5):1330~1332.
Chen Xianguo, Gaobo. FEM numerical simulation for closely-spaced parallel tunnels in metro. Chinese Journal of Rock Mechanics and Engineering, 2002, 16 (5):1330~1334.

[4] 姚海波,王梦恕,张顶立.崇文门地铁站浅埋暗挖法穿越既有线结构沉降数值分析
[J].市政技术,2004, 6 (22):237~239.
Yao Haibo, Wang Mengshu, Zhang Dingli. Numerical analysis of structural settlement when crossing existing line for mine method tunnel about chongwenmen of metro station. Municipal Engineering Techchnology, 2004, 6 (22):237~239.

[5] 唐议兴,等.近距离双隧道开挖与支护的稳定性有限元计算
[J].岩土力学,1999, 20 (1):1395~1397.
Tang Yixing, et al.. FEM calculation for the stability of the excavation and lining structure of a nearby double tunnel. Rock and Soil Mechanics, 1999, 20 (1):1395~1397.

[6] 黄俊.地铁重叠隧道上覆地层变形的数值模拟
[J].岩石力学与工程学报,2005,(12):2178~2179.
Huang jun. Numerical simulation of stratum deformation above overlapping metro tunnel. Chinese Journal of Rock Mechanics and Engineering, 2005,(12):2178~2179.

[7] 张玉军,刘谊平.上下行隧道立交处围岩稳定性的有限元计算
[J].岩土力学, 2002, 23 (4):1298~1299.
Zhang Yujun, Liu Yiping. 3D finite element analysis for stability of surrounding rockmass at grade separation section of up tunnel and down tunnel. Rock and Soil Mechanics, 2002, 23 (4):1298~1299.

[8] 王亮,赵均海,李小伟.岩质圆形隧洞围岩应力场弹塑性新解
[J].工程地质学报,2007, 15 (3):422~427.
Wang Liang, Zhao Junhai, Li Xiaowei. New elastoplastic solution of rock circular tunnel surrounding rockmass stress field. Jouranl of Engineering Geology, 2007, 15 (3):422~427

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