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Upper Bound Solution for the Face Stability of Shield Tunnel below the Water Table

Author

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  • Xilin Lu
  • Haoran Wang
  • Maosong Huang

Abstract

By FE simulation with Mohr-Coulomb perfect elastoplasticity model, the relationship between the support pressure and displacement of the shield tunnel face was obtained. According to the plastic strain distribution at collapse state, an appropriate failure mechanism was proposed for upper bound limit analysis, and the formula to calculate the limit support pressure was deduced. The limit support pressure was rearranged to be the summation of soil cohesion , surcharge load , and soil gravity multiplied by their corresponding coefficients , , and , and parametric studies were carried out on these coefficients. In order to consider the influence of seepage on the face stability, the pore water pressure distribution and the seepage force on the tunnel face were obtained by FE simulation. After adding the power of seepage force into the equation of the upper bound limit analysis, the total limit support pressure for stabilizing the tunnel face under seepage condition was obtained. The total limit support pressure was shown to increase almost linearly with the water table.

Suggested Citation

  • Xilin Lu & Haoran Wang & Maosong Huang, 2014. "Upper Bound Solution for the Face Stability of Shield Tunnel below the Water Table," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-11, October.
    • Handle: RePEc:hin:jnlmpe:727964
    DOI: 10.1155/2014/727964
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    Cited by:

    1. Luhai Chen & Baoping Xi & Yunsheng Dong & Shuixin He & Yongxiang Shi & Qibo Gao & Keliu Liu & Na Zhao, 2023. "Study on the Stability and Seepage Characteristics of Underwater Shield Tunnels under High Water Pressure Seepage," Sustainability, MDPI, vol. 15(21), pages 1-17, November.
    2. M. R. Mahendrini Fernando Ariyachandra & Gayan Wedawatta, 2023. "Digital Twin Smart Cities for Disaster Risk Management: A Review of Evolving Concepts," Sustainability, MDPI, vol. 15(15), pages 1-25, August.

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