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Initial excess pore water pressures induced by tunnelling in soft ground

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Abstract

Tunnelling-induced long-term consolidation settlement attracts a great interest of engineering practice. The distribution and magnitude of tunnelling-induced initial excess pore water pressure have significant effects on the long-term consolidation settlement. A simple and reliable method for predicting the tunnel-induced initial excess pore water pressure calculation in soft clay is proposed. This method is based on the theory of elasticity and SKEMPTON’s excess pore water pressure theory. Compared with the previously published field measurements and the finite-element modelling results, it is found that the suggested initial excess pore water pressure theory is in a good agreement with the measurements and the FE results. A series of parametric analyses are also carried out to investigate the influences of different factors on the distribution and magnitude of the initial excess pore water pressure in soft ground.

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Authors and Affiliations

  1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China

    Rong-zhu Liang  (梁荣柱) & Tang-dai Xia  (夏唐代)

  2. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, 310058, China

    Rong-zhu Liang  (梁荣柱) & Tang-dai Xia  (夏唐代)

  3. College of Civil, Construction and Environmental Engineering, Ningbo University, Ningbo, 315211, China

    Cun-gang Lin  (林存刚)

  4. School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, 310018, China

    Feng Yu  (俞峰)

  5. Insigma Group Co., Ltd., Hangzhou, 310002, China

    Shi-ming Wu  (吴世明)

Authors
  1. Rong-zhu Liang  (梁荣柱)
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  2. Tang-dai Xia  (夏唐代)
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  3. Cun-gang Lin  (林存刚)
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  4. Feng Yu  (俞峰)
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  5. Shi-ming Wu  (吴世明)
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Corresponding author

Correspondence to Rong-zhu Liang  (梁荣柱).

Additional information

Foundation item: Projects(41472284, U1234204 ) supported by the National Natural Science Foundation of China

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Liang, Rz., Xia, Td., Lin, Cg. et al. Initial excess pore water pressures induced by tunnelling in soft ground. J. Cent. South Univ. 22, 4300–4309 (2015). https://doi.org/10.1007/s11771-015-2978-8

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  • DOI: https://doi.org/10.1007/s11771-015-2978-8

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