Influence of Deep Excavations on Nearby Existing Tunnels
Publication: International Journal of Geomechanics
Volume 13, Issue 2
Abstract
In Shanghai, a number of new underground passages are being constructed, often requiring deep excavations. When the excavations are in the vicinity of existing tunnels, it is necessary to assess the influence of these excavations on existing tunnels such as displacements of the lining and additional loads on the lining. This paper presents a finite-element parametric study of tunnel behavior caused by nearby deep excavation. This study investigates the effects of several parameters that may affect the tunnel response. These parameters are: Relative position of the tunnel with respect to the excavation, tunnel diameter, excavation dimensions, and tunnel protection measures. The results reveal that the influence of the excavation on the underlying tunnel is significant in a range of ∼5 × excavation width measured along the tunnel axis; unloading further than 10 m away from the axis of the tunnel has little effect on the tunnel structure. Based on the study in this paper a better understanding of the interaction between deep excavations and tunnels will be obtained.
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Acknowledgments
This study was funded by National Natural Science Foundation of China (Grant No. 50879058), Eurasia-Pacific-Uninet, and Austrian Society of Geomechanics.
References
Brinkgreve, R. B. J., Broere, W., and Waterman, D. (2006). Plaxis, finite element code for soil and rock analyses, users manual, Plaxis, Rotterdam, Netherlands.
Cao, W. H., Chen, Z. J., and Yang, Z. H. (2008). “Study of full-scale horizontal integral ring test for super-large-diameter tunnel lining structure.” The Shanghai Yangtze River tunnel—Theory, design and construction, R. Huang, ed., Taylor and Francis, London, 111–123.
Devriendt, M., Douthty, L., Morrison, P., and Pillai, A. (2010). “Displacement of tunnels from a basement excavation in London.” Proc. Inst. Civil Eng. Geotech. Eng., 163(3), 131–145.
Doležalová, M. (2001). “Tunnel complex unloaded by a deep excavation.” Comput. Geotech., 28(6), 469–493.
Hou, Y. M., Wang, J. H., and Zhang, L. L. (2007). “Three-dimensional numerical modeling of a deep excavation adjacent to Shanghai Metro tunnels.” Proc., Int. Conf. on Computational Science, ICCS 2007, Springer-Verlag, Berlin, 1164–1171.
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.
Huang, X., Schweiger, H. F., and Huang, H. W. (2009). “Numerical study on influence of deep excavations on existing shield tunnels.” Proc., 2nd Int. Conf. on Computational Methods in Tunneling, Aedificatio, Bochum, Germany, 241–248.
Karki, R. (2006). “Effects of deep excavation on circular tunnels in fine-grained soils.” M.Ph. thesis, Univ. of Saskatchewan, Saskatchewan, Canada.
Liao, S. M., Peng, F. L., and Shen, S. L. (2008). “Analysis of shearing effect on tunnel induced by load transfer along longitudinal direction.” Tunn. Undergr. Space Technol., 23, 421–430.
Nogueira, C. L., Azevedo, R. F., and Zornberg, J. G. (2011). “Validation of coupled simulation of excavations in saturated clay: Camboinhas case history.” Int. J. Geomech., 11(3), 202–210.
Schanz, T., Vermeer, P. A., and Bonnier, P. G. (1999). “Formulation and verification of the Hardening-Soil model.” Beyond 2000 in computational geotechnics, R. B. J. Brinkgreve, ed., Balkema, Rotterdam, Netherlands, 281–290.
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. Space Technol., 16, 93–98.
Yang, F., and Yang, J. S. (2010). “Stability of shallow tunnel using rigid blocks and finite-element upper bound solutions.” Int. J. Geomech., 10(6), 242–247.
Zheng, G., and Wei, S. W. (2008). “Numerical analyses of influence of overlying pit excavation on existing tunnels.” J. Cent. South. Univ. T., 15(s2), 69–75.
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Information
Published In
International Journal of Geomechanics
Volume 13 • Issue 2 • April 2013
Pages: 170 - 180
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 20, 2011
Accepted: Oct 14, 2011
Published online: Oct 18, 2011
Published in print: Apr 1, 2013
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