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Volume 36 Issue 8
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LIN Cun-gang, XIA Tang-dai, LIANG Rong-zhu, WU Shi-ming. Estimation of shield tunnelling-induced ground surface settlements by virtual image technique[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(8): 1438-1446. DOI: 10.11779/CJGE201408009
Citation: LIN Cun-gang, XIA Tang-dai, LIANG Rong-zhu, WU Shi-ming. Estimation of shield tunnelling-induced ground surface settlements by virtual image technique[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(8): 1438-1446. DOI: 10.11779/CJGE201408009
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Estimation of shield tunnelling-induced ground surface settlements by virtual image technique

  • 1. College of Civil, Construction and Environmental Engineering, Ningbo University, Ningbo 315211, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 3. Hangzhou Qing-chun Road Cross-River Tunnel Company Limited, Hangzhou 310002, China

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  • Received Date: January 17, 2014
  • Published Date: August 18, 2014
    Graphical Abstract
    • Abstract
  • The accurate estimation of ground surface subsidence induced by shield tunnelling is crucial to the protection of buildings or structures in the vicinity. Under the hypothesis that the soil is a homogeneous isotropic incompressible linear-elastic semi-infinite half-space, equations for calculation of tunnelling-induced ground surface settlements under different surrounding soil intrusion models are derived based on the virtual image technique. Compared with those of numerical integration methods, the predicted results by the proposed method are more accurate. For the soil in reality is anisotropic, layered and compressible, the transverse ground surface settlement trough width is over-estimated both by this study and the numerical integration method. A modification parameter of trough width is introduced into the deduced formula. The modified method is proved by the field observations to be an easy and reliable method for prediction of ground surface settlements resulting from ground loss during construction of shield-driven tunnels.
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    • References (15)
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