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http://dx.doi.org/10.12652/Ksce.2012.32.5C.199

The Response of a Single Pile and Pile Groups to Tunnelling Performed in Weathered Rock  

Lee, Cheol Ju (강원대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.5C, 2012 , pp. 199-210 More about this Journal
Abstract
The effects of tunnelling in weak weathered rock on the behaviour of a pre-existing single pile and pile groups ($3{\times}3$ and $5{\times}5$ pile groups) above a tunnel have been studied by carrying out three-dimensional (3D) elasto-plastic numerical analyses. Numerical modelling of such effects considers the response of the single pile and pile groups in terms of tunnelling-induced ground and pile settlement as well as changes of the shear transfer mechanism at the pile-soil interface due to tunnelling. Due to changes in the relative shear displacement between the pile and the soil at the pile-soil interface with tunnel advancement, the shear stresses and axial pile force distributions along the pile change drastically. Based on the computed results, upward shear stresses are induced up to about Z/L=0.775 from the pile top, while downward shear stresses are mobilised below Z/L=0.775, resulting in a reduction in the axial pile force distribution with depth equivalent to a net increase in the tensile force on the pile. A maximum tensile force of about $0.36P_a$ developed on the single pile solely due to tunnelling, where $P_a$ is the service axial pile loading prior to tunnelling. The degree of interface shear strength mobilisation at the pile-soil interface was found to be a key factor governing pile-soil-tunnelling interaction. Overall it has been found that the larger the number of piles, the greater is the effect of tunnelling on the piles in terms of pile settlement, while changes of the axial pile forces for the piles in the groups are smaller than for a single pile due to the shielding effect. The reduction of apparent allowable pile capacity due to tunnelling-induced pile head settlement was significant, in particular for piles inside the groups.
Keywords
numerical modelling and analysis; piles; soil-structure interaction, tunnelling; weak weathered rock;
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  • Reference
1 Fleming, W. G. K., Weltman, A. J., Randolph, W. F., and Elson, W. K. (1992) Piling engineering, 2nd Edition, Blackie Academic & Professional.
2 Huang, M., Zhang, C., and Li, Z. (2009) A simplified analysis method for the influence of tunnelling on grouped piles. Tunnelling and Underground Space Technology, Vol. 24, pp. 410- 422.   DOI
3 Itasca Consulting Group. (2006) FLAC3D - Fast Lagrangian Analysis of Continua user's and theory manuals, Minneapolis, Minn
4 Jacobsz, S.W. (2002) The effects of tunnelling on piled foundations. PhD thesis, University of Cambridge.
5 Jacobsz, S.W. (2003) Tunnelling effects on piled foundations. Tunnels and Tunnelling international, June, 28-31.
6 Kaalberg, F.J., Teunissen, E.A.H., van Tol A.F., and Bosch, J.W. (2005) Dutch Research on the impact of shield tunneling on pile foundations. Geotechnical Aspects of Underground Construction in Soft Ground, Proceedings of 5th International Conf. of TC 28 of the ISSMGE, pp. 123-133.
7 Kitiyodom, P., Matsumoto, T., and Kawaguchi, K. (2005) A simplified analysis method for piled raft foundations subjected to ground movements induced by tunneling. Int. J. Numer. Anal. Meth. Geomech. Vol. 29, pp. 1485-1507.   DOI
8 Lee, C. J. (2001) The influence of negative skin friction on piles and in pile groups. PhD thesis, Cambridge University.
9 Lee, C. J. and Jacobsz, S.W. (2006) The Influence of Tunnelling on Adjacent Piled Foundations, Tunnelling and Underground Space Technology, Vol. 21, Issues 3-4, p. 430   DOI
10 Lee, C. J. and Chiang, K. H. (2007) Responses of single piles to tunneling-induced soil movements in sandy ground. Canadian Geotechnical Journal, Vol. 44, pp. 1224-1241.   DOI
11 Lee, C. J. (2012) Numerical analysis of the interface shear transfer mechanism of a single pile to tunnelling in weathered residual soil, Comput. Geotech, Vol. 42, pp. 193-203.   DOI
12 Lee, G.T.K. and Ng, C.W.W. (2005) The effects of advancing open face tunneling on an existing loaded pile. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 131, No. 2, pp. 193-201.   DOI
13 Lee, S. W., Choy, C.K.M., Cheang, W.W. L., Swolfs, W., and Brinkgreve, R. (2010) Modelling of tunnelling beneath a building supported by friction bored piles. The 17th Southeast Asian Geotechnical Conference, pp. 215-218.
14 Lee, Y. J. (2004) Tunnelling adjacent to a row of loaded piles. PhD Thesis, University College London, University of London.
15 Loganathan, N. and Poulos, H.G. (1998) Analytical prediction for tunneling-induced ground movement in clays. J. Geotech. Geoenviron. Eng., ASCE, Vol. 124, No. 9, pp. 846-856.   DOI
16 Loganathan, N., Poulos, H.G. and Stewart, D.P. (2000) Centrifuge model testing of tunneling-induced ground and pile deformations. Geotechnique, Vol. 50, No 3, pp. 283-294.   DOI
17 Loganathan N., Poulos, H. G., and Xu, K. J. (2001) Ground and pile-group responses due to tunneling. Soils and Foundations, Vol. 41, pp. 57-67.
18 Mair, R.J. and Taylor, R.N. (1997) Theme lecture: bored tunnels in the urban environment. Proc. 14th International Conference on Soil Mechanics and Foundation Engineering, Hamburg, Balkema, Vol. 4, pp. 2353-2385.
19 Ong, O.W., Leung, C.F., Yong, K.Y., and Chow, Y.K. (2006) Pile responses due to tunneling in clay. Physical Modelling in Geotechnics, 6th International Conference on Physical Modelling in Geotechnics, Taylor & Francis Group, London, pp. 1177- 1182.
20 Mroueh, H. and Shahrour, I. (2002) Three-dimensional finite element analysis of the interaction between tunnelling and pile foundation. Int. J. Numer. Anal. Meth. Geomech. Vol. 26, pp. 217-230.   DOI
21 Pang, C. H. (2006) The effects of tunnel construction on nearby pile foundation. PhD thesis, The National University of Singapore, pp. 27-56.
22 Selemetas, D. (2005) The response of full-scale piles and piled structures to tunnelling. PhD thesis, University of Cambridge.
23 Xu, K.J. and Poulos, H.G. (2001) 3-D elastic analysis of vertical piles subjected to ''passive" loadings. Comput. Geotech. Vol. 28, pp. 349-375.   DOI
24 Zhang, L.M., Ng, C.W.W. and Lee, C.J. (2004) Effects of slope and sleeving on the behavior of laterally loaded piles, Soils and Foundation, Vol. 44, No. 4, pp. 99-108.   DOI   ScienceOn
25 이인모(2004) 터널의 지반공학적 원리, 새론.
26 이철주(2009) Soil slip을 고려한 터널굴착에 의한 단독말뚝의 거동연구, 한국지반환경공학회 논문집, 한국지반환경공학회, 제 10권 제5호, pp. 59-67.
27 Bakker, K. J. and Bezuijen, A. (2008) Ten years of bored tunnels in the Netherlands, Geotechniek, April, 6-13.
28 Chapman, D., Metje, N., and Stärk, A. (2010) Introduction to tunnel construction, Spon Press.
29 Chen, C. Y. and Martin, G. R. (2001) Effect of embankment slope on lateral response of piles, Flac and Numerical Modelling in Geomechanics, Billaux et al. (eds), Swets & Zeitlinger, pp. 205-213.
30 Chen, L. T., Poulos, H. G., and Loganathan, N. (1999) Pile responses caused by tunnelling. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol 125, No. 3, pp. 207-215.   DOI
31 Cheng, C. Y., Dasari, G. R., Chow, Y. K., and Leung, C. F. (2007) Finite element analysis of tunnel-soil-pile interaction using displacement controlled model. Tunnelling and Underground Space Technology, Vol. 22, pp. 450-466.   DOI
32 Davisson, M. T. (1972) High capacity piles. Proceedings of Lecture Series in Innovations in Foundation Construction, ASCE, Illinois Section, pp. 81-112.
33 Devriendt, M. and Williamson, M. (2011) Validation of methods for assessing tunnelling-induced settlements on piles, Ground Engineering, March, 25-30.