An analytical design method for ductile support structures in squeezing tunnels

• Autorzy: Wu Kui , Shao Zhushan , Qin Su

Identyfikatory

DOI

10.1007/s43452-020-00096-0

• Języki publikacji: EN

Abstrakty

EN

Ductile linings have been proved to be highly effective for tunnelling in heavy squeezing grounds. But there still has not been a well-established design method for them. In this paper, an investigation on an analytical design method for ductile tunnel linings is performed. Firstly, a solution in closed form for ground response of a circular tunnel within Burgers viscoelastic rocks is derived, accounting for the displacement release effect. Then based on the principle of equivalent deformation, the mechanical model of segmental shotcrete linings with yielding elements is established using the homogenization approach. Analytical prediction for behaviour of ductile tunnel linings is provided. Furthermore, the proposed design method for ductile tunnel linings is applied in Saint Martin La Porte access tunnel and the analytical prediction is in good agreement with field monitoring data. Finally, a parametric investigation on the influence of yielding elements on performance of ductile tunnel linings is conducted. Results show that the length of yielding elements poses a great influence on linings. It is feasible and effective to increase the length of yielding elements to obtain the pressure within the bearing capacity of linings. However, yield stress of yielding elements does not significantly affect the performance of the lining. It is suggested to apply yielding elements with relatively higher yield stress in linings for higher stability.

Słowa kluczowe

EN

squeezing tunnel; ductile lining; analytical design method; engineering applications; parametric investigations

PL

tunel; beton natryskowy; metoda homogenizacji

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 3
• Strony: 396--408
• Opis fizyczny: Bibliogr. 35 poz., fot., rys., wykr.

Twórcy

autor

Wu Kui

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
• Shaanxi Key Lab of Geotechnical and Underground Space Engineering (XAUAT), Xi’an University of Architecture and Technology, Xi’an 710055, China

autor

Shao Zhushan

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
• Shaanxi Key Lab of Geotechnical and Underground Space Engineering (XAUAT), Xi’an University of Architecture and Technology, Xi’an 710055, China

autor

Qin Su

• School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
• Shaanxi Key Lab of Geotechnical and Underground Space Engineering (XAUAT), Xi’an University of Architecture and Technology, Xi’an 710055, China

Bibliografia

• [1] Wu K, Shao Z, Qin S, Li B. Determination of deformation mecha-nism and countermeasures in silty clay tunnel. J Perform Constr Fac. 2020;34(1):04019095.
• [2] Paraskevopoulou C, Diederichs M. Analysis of time-dependent deformation in tunnels using the Convergence-Confinement Method. Tunn Under Space Tech. 2018;71:62–80.
• [3] Hoek E. Big tunnels in bad rock. J Geotech Geoenviron Eng. 2001;127(9):726–40.
• [4] Qiu J, Lu Y, Lai J, Zhang Y, Yang T, Wang K. Experimental study on the effect of water gushing on loess metro tunnel. Environ Earth Sci. 2020;79:261.
• [5] Cantieni L, Anagnostou G. The interaction between yield-ing supports and squeezing ground. Tunn Under Space Tech. 2009;24:309–22.
• [6] Wu K, Shao Z, Qin S. A solution for squeezing deformation control in tunnels using foamed concrete: a review. Constr Build Mater. 2020;257:119539.
• [7] Lackner R, Macht J, Hellmich C, Mang HA. Hybrid method for analysis of segmented shotcrete tunnel linings. J Geotech Geoen-viron Eng. 2002;128(4):298–308.
• [8] Pöttler R. Shotcrete lining with longitudinal gaps. Felsbau. 1997;15(6):422–9.
• [9] Barla G, Bonini M, Semeraro M. Analysis of the behaviour of a yield-control support system in squeezing rock. Tunn Under Space Tech. 2011;26(1):146–54.
• [10] Moritz B. Yielding elements-requirements, overview and com-parison. Geomech Tunn. 2011;4(3):221–36.
• [11] Radončić N, Schubert W, Moritz B. Ductile support design. Geomech Tunn. 2009;2(5):561–77.
• [12] Wu K, Shao Z, Qin S, Zhao N, Hu H. Analytical-based assessment of effect of highly deformable elements on tunnel lining within viscoelastic rocks. Int J Appl Mech. 2020;12(3):2050030.
• [13] Button EA, Schubert W, Moritz B. The application of ductile sup-port methods in Alpine tunnels. In: 10th ISRM Congress, International Society for Rock Mechanics and Rock Engineering, South Africa; 2003.
• [14] Schubert W. Dealing with squeezing conditions in Alpine tunnels. Rock Mech Rock Eng. 1996;29:145–53.
• [15] Qiu W, Wang G, Gong L, Shen Z, Li C, Dang J. Research and application of resistance-limiting and energy-dissipating support in large deformation tunnel. Chinese J Rock Mech Eng. 2018;37(8):1785–95.
• [16] Moritz B. Ductile support system for tunnels in squeezing rock. PhD thesis, Graz University of Technology, Graz, Austria; 1999.
• [17] Bonini M, Barla G. The Saint Martin La Porte access adit (Lyon-Turin Base Tunnel) revisited. Tunn Under Space Tech. 2012;30:38–54.
• [18] Mezger F, Ramoni M, Anagnostou G. Options for deformable segmental lining systems for tunnelling in squeezing rock. Tunn Under Space Tech. 2018;76:64–75.
• [19] Kovári K. Design methods with yielding support in squeezing and swelling rocks. In: Proceedings of the World Tunnel Congress, Budapest, Hungary; 2009.
• [20] Hammer AL, Hasanpour R, Hoffmann C, Thewes M. Numerical analysis of interaction behavior of yielding supports in squeezing ground. Numerical methods in geotechnical engineering IX. Boca Raton: CRC Press; 2018.
• [21] Tian H, Chen W, Yang D, Wu G, Tan X. Numerical analysis on the interaction of shotcrete liner with rock for yielding supports. Tunn Under Space Tech. 2016;2016(54):20–8.
• [22] Nomikos P, Rahmannejad R, Sofianos A. Supported axisymmetric tunnels within linear viscoelastic Burgers rocks. Rock Mech Rock Eng. 2011;44:553–64.
• [23] Birchall TJ, Osman AS. Response of a tunnel deeply embedded in a viscoelastic medium. Int J Num Anal Meth Geomech. 2012;36(15):1717–40.
• [24] Wu K, Shao Z. Visco-elastic analysis on the effect of flexible layer on mechanical behavior of tunnels. Int J Appl Mech. 2019;11(3):1950027.
• [25] Wu K, Shao Z. Study on the effect of flexible layer on support structures of tunnel excavated in viscoelastic rocks. J Eng Mech. 2019;145(10):04019077.
• [26] Vlachopoulos N, Diederichs MS. Improved longitudinal displace-ment profiles for convergence confinement analysis of deep tunnels. Rock Mech Rock Eng. 2009;42(2):131–46.
• [27] Chu Z, Wu Z, Liu Q, Liu B. Analytical solutions for deep-buried lined tunnels considering longitudinal discontinuous excavation in rheological rock mass. J Eng Mec. 2020;146(6):04020047.
• [28] Panet M, Guenot A. Analysis of convergence behind the face of a tunnel. In: Proceedings of the International Symposium Tunnel-ling, 1982; IMM, London.
• [29] Panet M. Calcul des Tunnels par la Me’thode de Convergence-Confinement. Paris: Presses de l’Ecole Nationale des Ponts et Chausse’es; 1995.
• [30] Unlu T, Gercek H. Effect of Poisson’s ratio on the normalized radial displacements occurring around the face of a circular tunnel. Tunn Under Space Tech. 2003;18(5):547–53.
• [31] Goodman RE. Introduction to rock mechanics. 2nd ed. New York: Wiley; 1989.
• [32] Lei SX, Zhao W. Study on the mechanism of circumferential yielding support for soft rock tunnel with large deformation. Rock Soil Mech. 2020;41(3):1–8.
• [33] Barla G, Debernardi D, Sterpi D. Time-dependent modeling of tunnels in squeezing conditions. Int J Geomech. 2012;12(6):697–710.
• [34] Chu Z, Wu Z, Liu B, Liu Q. Coupled analytical solutions for deep-buried circular lined tunnels considering tunnel face advancement and soft rock rheology effects. Tunn Under Space Tech. 2019;94:103111.
• [35] Yang CY, Xu MX, Chen WF. Reliability analysis of shot-crete lining during tunnel construction. J Constr Eng M. 2007;133(12):975–81.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)