DOI QR코드

DOI QR Code

An improved collapse analysis mechanism for the face stability of shield tunnel in layered soils

  • Chen, Guang-hui (School of Civil Engineering, Central South University, No.22, Shaoshan South Road, Central South University Railway Campus) ;
  • Zou, Jin-feng (School of Civil Engineering, Central South University, No.22, Shaoshan South Road, Central South University Railway Campus) ;
  • Qian, Ze-hang (School of Civil Engineering, Central South University, No.22, Shaoshan South Road, Central South University Railway Campus)
  • 투고 : 2017.10.13
  • 심사 : 2018.12.11
  • 발행 : 2019.01.20

초록

Based on the results of Han et al. (2016), in the failure zone ahead of the tunnel face it can be obviously identified that a shear failure band occurs in the lower part and a pressure arch happens at the upper part, which was often neglected in analyzing the face stability of shield tunnel. In order to better describe the collapse failure feature of the tunnel face, a new improved failure mechanism is proposed to evaluate the face stability of shield tunnel excavated in layered soils in the framework of limit analysis by using spatial discretization technique and linear interpolation method in this study. The developed failure mechanism is composed of two parts: i) the rotational failure mechanism denoting the shear failure band and ii) a uniformly distributed force denoting the pressure arch effect. Followed by the comparison between the results of critical face pressures provided by the developed model and those by the existing works, which indicates that the new developed failure mechanism provides comparatively reasonable results.

키워드

참고문헌

  1. Anagnostou, G. and Kovari, K. (1996), "Face stability conditions with earth-pressure-balanced shields", Tunn. Undergr. Sp. Technol., 11(2), 165-173. https://doi.org/10.1016/0886-7798(96)00017-X
  2. Anagnostou, S.T.G. (2012), "The contribution of horizontal arching to tunnel face stability", Geotechnik, 35(1), 34-44. https://doi.org/10.1002/gete.201100024
  3. Anagnostou, G. and Perazzelli, P. (2013), "The stability of a tunnel face with a free span and a non-uniform support", Geotechnik, 36(1), 40-50. https://doi.org/10.1002/gete.201200014
  4. Broere, W. (2001), "Tunnel face stability & new CPT applications", Ph.D. Dissertation, Delft University of Technology, Delft, The Netherlands.
  5. Chen, W.F. (1975), Limit Analysis and Soil Plasticity, Elsevier, Amsterdam, The Netherlands.
  6. Chambon, P. and Corte, J.F. (1994), "Shallow tunnels in cohesionless soil: Stability of tunnel face", Geotech. Eng., 120(7), 1148-1165. https://doi.org/10.1061/(ASCE)0733-9410(1994)120:7(1148)
  7. Chen, R.P., Tang, L.J. and Ling, D.S. (2011), "Face stability analysis of shallow shield tunnels in dry sandy ground using the discrete element method", Comput. Geotech., 38(2), 187-195. https://doi.org/10.1016/j.compgeo.2010.11.003
  8. Chen, R.P., Li, J. and Kong, L.G. (2013), "Experimental study on face instability of shield tunnel in sand", Tunn. Undergr. Sp. Technol. Incorp. Trenchless Technol. Res., 33(1), 12-21. https://doi.org/10.1016/j.tust.2012.08.001
  9. Chen, R.P., Tang, L.J., Yin, X.S., Chen, Y.M. and Bian, X.C. (2015), "An improved 3D wedge-prism model for the face stability analysis of the shield tunnel in cohesionless soils", Acta Geotech., 10(5), 683-692. https://doi.org/10.1007/s11440-014-0304-5
  10. Horn, N. (1961), "Horizontal earth pressure on the vertical surfaces of the tunnel tubes", Proceedings of the National Conference of the Hungarian Civil Engineering Industry, Budapest, Hungary, November.
  11. Han, K., Zhang, C. and Zhang, D. (2016), "Upper-bound solutions for the face stability of a shield tunnel in multilayered cohesivefrictional soils", Comput. Geotech., 79, 1-9. https://doi.org/10.1016/j.compgeo.2016.05.018
  12. Idinger, G., Aklik, P. and Wu, W. (2011), "Centrifuge model test on the face stability of shallow tunnel", Acta Geotech., 6(2), 105-117. https://doi.org/10.1007/s11440-011-0139-2
  13. Ibrahim, E., Soubra, A.H. and Mollon, G. (2015), "Threedimensional face stability analysis of pressurized tunnels driven in a multilayered purely frictional medium", Tunn. Undergr. Sp. Technol., 49(1), 18-34. https://doi.org/10.1016/j.tust.2015.04.001
  14. Krause, T. (1987), "Schildvortrieb mit flussigkeits-und erdgestutzter ortsbrust", Technical University Carolo-Wilhelmina, Brunswick, Germany.
  15. Kirsch, A. (2010), "Experimental investigation of the face stability of shallow tunnels in sand", Acta Geotech., 5(1), 43-62. https://doi.org/10.1007/s11440-010-0110-7
  16. Khezri, N., Mohamad, H. and Fatahi, B. (2016), "Stability assessment of tunnel face in a layered soil using upper bound theorem of limit analysis", Geomech. Eng., 11(4), 471-492. https://doi.org/10.12989/gae.2016.11.4.471
  17. Leca, E. and Dormieux, L. (1990), "Upper and lower bound solutions for the face stability of shallow circular tunnels in frictional material", Geotechnique, 40(4), 581-606. https://doi.org/10.1680/geot.1990.40.4.581
  18. Li, C. and Zou, J.F. (2019), "Closed-form solution for undrained cavity expansion in anisotropic soil mass based on the spatially mobilized plane failure criterion", Int. J. Geomech., Accepted.
  19. Mollon, G., Dias, D. and Soubra, A.H. (2009), "Probabilistic Analysis and Design of Circular Tunnels against Face Stability", Int. J. Geomech., 9(6), 237-249. https://doi.org/10.1061/(ASCE)1532-3641(2009)9:6(237)
  20. Mollon, G., Dias, D. and Soubra, A.H. (2010), "Face stability analysis of circular tunnels driven by a pressurized shield", J. Geotech. Geoenviron. Eng., 136(1), 215-229. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000194
  21. Mollon, G., Daniel, D. and Abdul-Hamid, S. (2011), "Rotational failure mechanisms for the face stability analysis of tunnels driven by a pressurized shield", Int. J. Numer. Anal. Meth. Geomech., 35(12), 1363-1388. https://doi.org/10.1002/nag.962
  22. Oreste, P.P. and Dias, D. (2012), "Stabilisation of the excavation face in shallow tunnels using fibreglass dowels", Rock Mech. Rock Eng., 45(4), 499-517. https://doi.org/10.1007/s00603-012-0234-1
  23. Pan, Q. and Dias, D. (2016a), "Face stability analysis for a shielddriven tunnel in anisotropic and nonhomogeneous soils by the kinematical approach", Int. J. Geomech., 16(3), 04015076. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000569
  24. Pan, Q. and Dias, D. (2016b), "The effect of pore water pressure on tunnel face stability", Int. J. Numer. Anal. Meth. Geomech., 40(15), 2123-2136. https://doi.org/10.1002/nag.2528
  25. Pan, Q. and Dias, D. (2017a), "Upper-bound analysis on the face stability of a non-circular tunnel", Tunn. Undergr. Sp. Technol., 62, 96-102. https://doi.org/10.1016/j.tust.2016.11.010
  26. Pan, Q. and Dias, D. (2017b), "Safety factor assessment of a tunnel face reinforced by horizontal dowels", Eng. Struct., 142, 56-66. https://doi.org/10.1016/j.engstruct.2017.03.056
  27. Peng, X., Yu, P. and Zhang, Y. (2018), "Applying modified discontinuous deformation analysis to assess the dynamic response of sites containing discontinuities", Eng. Geol., 246, 349-360. https://doi.org/10.1016/j.enggeo.2018.10.011
  28. Soubra, A.H. (2000), "Kinematical approach to the face stability analysis of shallow circular tunnels", Proceedings of the 8th International Symposium on Plasticity, Vancouver, Canada, July.
  29. Schuller, H. and Schweiger, H.F. (2002), "Application of a multilaminate model to simulation of shear band formation in NATM-tunnelling", Comput. Geotech., 29(7), 501-524. https://doi.org/10.1016/S0266-352X(02)00013-7
  30. Subrin, D. and Wong, H. (2002), "Tunnel face stability in frictional material: A new 3D failure mechanism", Comptes Rendus Mecanique, 330(7), 513-519. https://doi.org/10.1016/S1631-0721(02)01491-2
  31. Senent, S. and Jimenez, R. (2015), "A tunnel face failure mechanism for layered ground, considering the possibility of partial collapse", Tunn. Undergr. Sp. Technol., 47, 182-192. https://doi.org/10.1016/j.tust.2014.12.014
  32. Tang, X.W., Liu, W. and Albers, B. (2014), "Upper bound analysis of tunnel face stability in layered soils", Acta Geotech., 9(4), 661-671. https://doi.org/10.1007/s11440-013-0256-1
  33. Vermeer, P.A., Ruse, N. and Marcher, T. (2002), "Tunnel heading stability in drained ground", Felsbau, 20(6), 8-18.
  34. Yang, X.L. and Yan, R.M. (2015), "Collapse mechanism for deep tunnel subjected to seepage force in layered soils", Geomech. Eng., 8(5), 741-756. https://doi.org/10.12989/gae.2015.8.5.741
  35. Yang, X.L., Xu, J.S. and Li, Y.X. (2016), "Collapse mechanism of tunnel roof considering joined influences of nonlinearity and non-associated flow rule", Geomech. Eng., 10(1), 21-35. https://doi.org/10.12989/gae.2016.10.1.021
  36. Zhang, C., Han, K. and Zhang, D. (2015), "Face stability analysis of shallow circular tunnels in cohesive-frictional soils", Tunn. Undergr. Sp. Technol., 50, 345-357. https://doi.org/10.1016/j.tust.2015.08.007
  37. Zhao, L.H., Cheng, X., Li, D.J. and Zhang, Y.B. (2018), "Influence of non-dimensional strength parameters on seismic stability of cracked slopes", J. Mountain Sci.
  38. Zou, J.F., Qian, Z.H., Xiang, X. and Chen, G.H. (2019a), "Face stability of a tunnel excavated in saturated nonhomogeneous soils", Tunn. Undergr. Sp. Technol., 83, 1-17. https://doi.org/10.1016/j.tust.2018.09.007
  39. Zou, J.F., Chen, G.H. and Qian, Z.H. (2019b), "Tunnel face stability in cohesion-frictional soils considering the soil arching effect by improved failure models", Comput. Geotech., 106, 1-17. https://doi.org/10.1016/j.compgeo.2018.10.014
  40. Zou, J.F. and Zhang, P.H. (2019c), "Analytical model of fully grouted bolts in pull-out tests and in situ rock masses", Int. J. Rock Mech. Min. Sci., 113, 278-294. https://doi.org/10.1016/j.ijrmms.2018.11.015
  41. Zou, J.F., Liu, L. and Xia, M.Y. (2019d), "A new simple approach for the quasi-plane strain problem of circular tunnel in strainsoftening rock mass incorporating the effect of out-of-plane stress", Acta Geotech., In Press.

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