Geomechanics and Engineering

  • 제12권3호
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  • Pages.361-397
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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

Characteristics and prediction methods for tunnel deformations induced by excavations

  • Zheng, Gang (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Du, Yiming (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Cheng, Xuesong (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Diao, Yu (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Deng, Xu (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Wang, Fanjun (MOE Key Laboratory of Coast Civil Structure Safety, Tianjin University)
  • 투고 : 2016.03.09
  • 심사 : 2016.11.22
  • 발행 : 2017.03.30
⟨ 이전 논문 다음 논문 ⟩

초록

The unloading effect from excavations can cause the deformation of adjacent tunnels, which may seriously influence the operation and safety of those tunnels. However, systematic studies of the deformation characteristics of tunnels located along side excavations are limited, and simplified methods to predict the influence of excavations on tunnels are also rare. In this study, the simulation capability of a finite element method (FEM) considering the small-strain characteristics of soil was verified using a case study. Then, a large number of FEM simulations examining the influence of excavations on adjacent tunnels were conducted. Based on the simulation results, the deformation characteristics of tunnels at different positions and under four deformation modes of the retaining structure were analyzed. The results indicate that the deformation mode of the retaining structure has a significant influence on the deformation of certain tunnels. When the deformation magnitudes of the retaining structures are the same, the influence degree of the excavation on the tunnel increased in this order: from cantilever type to convex type to composite type to kick-in type. In practical projects, the deformation mode of the retaining structure should be optimized according to the tunnel position, and kick-in deformation should be avoided. Furthermore, two methods to predict the influence of excavations on adjacent tunnels are proposed. Design charts, in terms of normalized tunnel deformation contours, can be used to quantitatively estimate the tunnel deformation. The design table of the excavation influence zones can be applied to determine which influence zone the tunnel is located in.

키워드

과제정보

연구 과제 주관 기관 : Natural Science Foundation of China

참고문헌

  1. Ardakani, A., Bayat, M. and Javanmard, M. (2014), "Numerical modeling of soil nail walls considering mohr coulomb, hardening soil and hardening soil with small-strain stiffness effect models", Geomech. Eng., Int. J., 6(4), 391-401. https://doi.org/10.12989/gae.2014.6.4.391
  2. Bousbia, N. and Messast, S. (2015), "Numerical modeling of two parallel tunnels interaction using threedimensional Finite Elements Method", Geomech. Eng., Int. J., 9(6), 775-791. https://doi.org/10.12989/gae.2015.9.6.775
  3. Burford, D. (1986), "Heave of tunnels beneath the Shell Centre, London, 1956-1986", Geotechnique, 38(1), 155-157.
  4. Chang, C.T., Sun, C.W., Duann, S.W. and Hwang, R.N. (2001a), "Response of a Taipei Rapid Transit System (TRTS) tunnel to adjacent excavation", Tunn. Undergr. Sp. Tech., 16(3), 151-158. https://doi.org/10.1016/S0886-7798(01)00049-9
  5. Chang, C.T., Wang, M.J., Chang, C.T. and Sun, C.W. (2001b), "Repair of displaced shield tunnel of the Taipei rapid transit system", Tunn. Undergr. Sp. Tech., 16(3), 167-173. https://doi.org/10.1016/S0886-7798(01)00050-5
  6. Do, N.A., Dias, D., Djeran-Maigre, I. and Oreste, P. (2014), "2d numerical investigations of twin tunnel interaction", Geomech. Eng., Int. J., 6(3), 263-275. https://doi.org/10.12989/gae.2014.6.3.263
  7. Dolezalova, M. (2001), "Tunnel complex unloaded by a deep excavation", Comput. Geotech., 28(s6-7), 469-493. https://doi.org/10.1016/S0266-352X(01)00005-2
  8. Hu, Z.F., Yue, Z.Q., Zhou, J. and Tham, L.G. (2003), "Design and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnels", Can. Geotech. J., 40(5), 933-948. https://doi.org/10.1139/t03-041
  9. Huang, X., Schweiger, H.F. and Huang, H. (2011), "Influence of Deep Excavations on Nearby Existing Tunnels", Int. J. Geomech., 13(2), 170-180.
  10. Huang, X., Zhang, D.M. and Huang, H.W. (2014), "Centrifuge modelling of deep excavation over existing tunnels", P. I. Civil Eng-GeoTec, 167(GE1), 3-18.
  11. Hwang, R.N., Duann, S.W., Cheng, K.H. and Chen, C.H. (2011), "Damages to metro tunnels due to adjacent Excavations", Proceeding of TC302 Symposium Osaka, International Symposium on Backwards Problem in Geotechnical Engineering and Monitoring of Geo-Construction, Osaka, Japan, July.
  12. Kung, G., Hsiao, E. and Juang, C. (2007), "Evaluation of a simplified small-strain soil model for analysis of excavation-induced movements", Can. Geotech. J., 44(6), 726-736. https://doi.org/10.1139/t07-014
  13. Lee, K.M. and Ge, X.M. (2001), "The equivalence of a jointed shield driven tunnel lining to a continuous ring structure", Can. Geotech. J., 38(3), 461-483. https://doi.org/10.1139/t00-107
  14. Liu, H., Li, P. and Liu, J. (2011), "Numerical investigation of underlying tunnel heave during a new tunnel construction", Tunn. Undergr. Sp. Tech., 26(2), 276-283. https://doi.org/10.1016/j.tust.2010.10.002
  15. Ng, C.W.W., Shi, J. and Hong, Y. (2013), "Three-dimensional centrifuge modelling of basement excavation effects on an existing tunnel in dry sand", Can. Geotech. J., 50(8), 874-888. https://doi.org/10.1139/cgj-2012-0423
  16. Ng, C.W.W., Sun, H.S., Lei, G.H., Shi, J.W. and Masin, D. (2015a), "Ability of three different soil constitutive models to predict a tunnel's response to basement excavation", Can. Geotech. J., 52(11), 1685-1698. https://doi.org/10.1139/cgj-2014-0361
  17. Ng, C.W.W., Shi, J., Masin, D., Sun, H. and Lei, G.H. (2015b), "Influence of sand density and retaining wall stiffness on three-dimensional responses of tunnel to basement excavation", Can. Geotech. J., 52(11), 1811-1829. https://doi.org/10.1139/cgj-2014-0150
  18. Richards, J.A. (1998), "Inspection, maintenance and repair of tunnels, International lessons and practice", Tunn. Undergr. Sp. Tech., 13(4), 369-375. https://doi.org/10.1016/S0886-7798(98)00079-0
  19. Sharma, J.S., Hefny, A.M., Zhao, J. and Chan, C.W. (2001), "Effect of large excavation on deformation of adjacent MRT tunnels", Tunn. Undergr. Sp. Tech., 16(2), 93-98. https://doi.org/10.1016/S0886-7798(01)00033-5
  20. Simpson, B. (1992), "Retaining structure-displacement and design (32nd Rankine Lecture)", Geotechnique, 42(4), 541-576. https://doi.org/10.1680/geot.1992.42.4.541
  21. The British Tunneling Society (2006), The Joint Code of Practice for Risk Management of Tunnel Works; The International Tunneling Insurance Group (ITIG), British.
  22. Zhang, J., Chen, J., Wang, J. and Zhu, Y. (2013), "Prediction of tunnel displacement induced by adjacent excavation in soft soil", Tunn. Undergr. Sp. Tech., 36(2), 24-33. https://doi.org/10.1016/j.tust.2013.01.011
  23. Zheng, G. and Li, Z.W. (2012), "Comparative analysis of responses of buildings adjacent to excavations with different deformation modes of retaining walls", Chinese J. Geotech. Eng., 34(6), 970-977.
  24. Zheng, G. and Wei, S.W. (2008), "Numerical analyses of influence of overlying pit excavation on existing tunnels", J. Cent. South Univ., 15(S2), 69-75.
  25. Zheng, G., Wei, S.W., Peng, S.Y., Diao, Y. and Ng, C.W.W. (2010), "Centrifuge modeling of the influence of basement excavation on existing tunnel", Proceedings of the 7th International Conference on Physical Modeling in geotechnics, Zurich, Switzerland, June.

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  12. Simplified method for calculating ground lateral displacement induced by foundation pit excavation vol.37, pp.7, 2017, https://doi.org/10.1108/ec-08-2019-0350
  13. The Study for Longitudinal Deformation of Adjacent Shield Tunnel Due to Foundation Pit Excavation with Consideration of the Retaining Structure Deformation vol.12, pp.12, 2017, https://doi.org/10.3390/sym12122103
  14. Stability Numbers for Unsupported Conical Excavations in Multi-Layered Cohesive Soils vol.10, pp.24, 2020, https://doi.org/10.3390/app10248839
  15. Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation vol.2021, pp.None, 2021, https://doi.org/10.1155/2021/5121084
  16. Experimental and Numerical Investigation on the Effects of Foundation Pit Excavation on Adjacent Tunnels in Soft Soil vol.2021, pp.None, 2017, https://doi.org/10.1155/2021/5587857
  17. Deformation Responses and Mechanical Mechanism of Existing Tunnel due to New Building Construction vol.2021, pp.None, 2021, https://doi.org/10.1155/2021/6623234
  18. Three-dimensional finite element analysis of urban rock tunnel under static loading condition: Effect of the rock weathering vol.25, pp.2, 2017, https://doi.org/10.12989/gae.2021.25.2.099
  19. Allowable wall deflection of braced excavation adjacent to pile-supported buildings vol.26, pp.2, 2017, https://doi.org/10.12989/gae.2021.26.2.161
  20. Transverse Force Analysis of Adjacent Shield Tunnel Caused by Foundation Pit Excavation Considering Deformation of Retaining Structures vol.13, pp.8, 2017, https://doi.org/10.3390/sym13081478
  21. Characterization of Underlying Twin Shield Tunnels Due to Foundation-Excavation Unloading in Soft Soils: An Experimental and Numerical Study vol.11, pp.22, 2017, https://doi.org/10.3390/app112210938
  22. Analytical Study on the Transverse Internal Forces of Shield Tunnel Segments due to Adjacent Excavations in Soft Clays vol.25, pp.12, 2017, https://doi.org/10.1007/s12205-021-1794-y