Geomechanics and Engineering

  • 제13권2호
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  • Pages.217-235
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  • 2017
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Collapse analysis of shallow tunnel subjected to seepage in layered soils considering joined effects of settlement and dilation

  • Yang, X.L. (School of Civil Engineering, Central South University) ;
  • Zhang, R. (School of Civil Engineering, Central South University)
  • 투고 : 2016.09.27
  • 심사 : 2017.02.25
  • 발행 : 2017.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

The stability prediction of shallow buried tunnels is one of the most difficult tasks in civil engineering. The aim of this work is to predict the state of collapse in shallow tunnel in layered soils by employing non-associated flow rule and nonlinear failure criterion within the framework of upper bound theorem. Particular emphasis is first given to consider the effects of dilation on the collapse mechanism of shallow tunnel. Furthermore, the seepage forces and surface settlement are considered to analyze the influence of different dilation coefficients on the collapse shape. Two different curve functions which describe two different soil layers are obtained by virtual work equations under the variational principle. The distinct characteristics of falling blocks up and down the water level are discussed in the present work. According to the numerical results, the potential collapse range decreases with the increase of the dilation coefficient. In layered soils, both of the single layer's dilation coefficient and two layers' dilation coefficients increase, the range of the potential collapse block reduces.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation

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피인용 문헌

  1. Energy analysis of rock plug thickness in karst tunnels based on non-associated flow rule and nonlinear failure criterion vol.24, pp.12, 2017, https://doi.org/10.1007/s11771-017-3708-1
  2. Kinematic analysis of shallow tunnel in layered strata considering joined effects of settlement and seepage vol.25, pp.2, 2017, https://doi.org/10.1007/s11771-018-3743-6
  3. Risk assessment model of tunnel water inrush based on improved attribute mathematical theory vol.25, pp.2, 2018, https://doi.org/10.1007/s11771-018-3744-5
  4. Catastrophe stability analysis for shallow tunnels considering settlement vol.25, pp.4, 2017, https://doi.org/10.1007/s11771-018-3796-6
  5. Seismic and Static 3D Stability of Two-stage Slope Considering Joined Influences of Nonlinearity and Dilatancy vol.22, pp.10, 2017, https://doi.org/10.1007/s12205-018-0636-z
  6. Experimental Investigation of the Deformation Characteristics of Tianjin Clays under Coupled Dynamic Stress and Seepage Fields vol.2019, pp.None, 2017, https://doi.org/10.1155/2019/3785937