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Volume 34 Issue 2
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YANG Min, HUANG Ju, SUN Qing, LIU Kan, ZENG Ying-jun. Computation method for long-term surface and subsurface settlements induced by excavation of tunnels in clays[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(2): 217-221.
Citation: YANG Min, HUANG Ju, SUN Qing, LIU Kan, ZENG Ying-jun. Computation method for long-term surface and subsurface settlements induced by excavation of tunnels in clays[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(2): 217-221.
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Computation method for long-term surface and subsurface settlements induced by excavation of tunnels in clays

  • 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Technical Center, China Construction Third Engineering Division, Co., Ltd., Wuhan 430070, China; 4. Shanghai No. 2 Municipal Engineering Co., Ltd., Shanghai 200065, China

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  • Received Date: January 10, 2011
  • Published Date: February 19, 2012
    Graphical Abstract
    • Abstract
  • Based on the Mair's theory of immediate settlement of soil due to tunneling, and the results of finite element simulation, a computation method for the long-term settlement of the soil at surface and subsurface is proposed. Ong’s centrifuge test is simulated first to verify the validity of the finite element model, then a numerical study on the long-term settlement of the soil at different depths is carried out. The relationship between ground losses under immediate and long-term conditions is established. Formulas for width parameter and the maximum settlement of settlement trough at different depths are also given, and the profile of settlement trough can be determined. Compared with the field measurement and numerical simulation, the validity of the proposed method is demonstrated. It can be employed in practical projects.
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    • References (9)
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    魏 纲 . 盾构施工引起地面长期沉降的理论计算研究 [J]. 岩石力学与工程学报 , 2008, 27 ( 增刊 1): 2960 – 2966. (WEI Gang. Research on theoretical calculation of long-term ground settlement caused by shield tunneling[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27 (S1): 2960 – 2966. (in Chinese))
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