A Parametric Study of Effect On Single Pile Integrity Due to An Adjacent Excavation Induced Stress Release in Soft Clay
Abstract
To gain new insights into single pile responses to adjacent excavations in soft ground, numerical parametric studies are carried out. An advanced hypoplastic (clay) constitutive model which takes account of small-strain stiffness is adopted. The effects of excavation depths (i.e. formation level) relative to pile were investigated by simulating the excavation near the pile shaft (i.e., He/Lp=0.67), next to (He/Lp=1.00) and below the pile toe (He/Lp=1.33). Among the three cases, the excavation in case of He/Lp=1.33 resulted in the largest pile settlement (i.e. 7.6%dp). On the other hand, the largest pile bending moment was induced in case of He/Lp=0.67.
Keywords:
parametric study, different excavation depths, soft clay, single pileDownloads
References
C. W. W. Ng, J. Wei, H. G. Poulos, H. Liu, “Effects of Multipropped Excavation on an Adjacent Floating Pile”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 143, No. 7, pp. 04017021-1 - 04017021-14, 2017 DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0001696
M. Korff, R. J. Mair, F. A. F. Van Tol, “Pile-Soil Interaction and Settlement Effects Induced by Deep Excavations”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 142, No. 8, pp. 04016034-1 - 04016034-14, 2016 DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0001434
R. J. Finno, S. A. Lawrence, N. F. Allawh, I. S. Harahap, “Analysis of performance of pile groups adjacent to deep excavation”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 117, No. 6, pp. 934-955, 1991 DOI: https://doi.org/10.1061/(ASCE)0733-9410(1991)117:6(934)
A. Goh, K. Wong, C. Teh, D. Wen, “Pile response adjacent to braced excavation”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 129, No. 4, pp. 383–386, 2003 DOI: https://doi.org/10.1061/(ASCE)1090-0241(2003)129:4(383)
D. Ong, C. F. Leung, Y. Chow, “Pile behavior due to excavation-induced soil movement in clay. I: Stable wall”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 132, No. 1, pp. 36-44, 2006 DOI: https://doi.org/10.1061/(ASCE)1090-0241(2006)132:1(36)
D. Ong, C. F. Leung, Y. Chow, “Behavior of pile groups subject to excavation-induced soil movement in very soft clay”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 135, No. 10, pp. 1462-1474, 2009 DOI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0000095
C. F. Leung, Y. Chow, R. F. Shen, “Behavior of pile subject to excavation-induced soil movement”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 126, No. 11, pp. 947-954, 2000 DOI: https://doi.org/10.1061/(ASCE)1090-0241(2000)126:11(947)
C. F. Leung, J. K. Lim, R. F. Shen, Y. K. Chow, “Behavior of pile groups subject to excavation-induced soil movement”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 129, No. 1, pp. 58-65, 2003 DOI: https://doi.org/10.1061/(ASCE)1090-0241(2003)129:1(58)
H. G. Poulos, L. Chen, “Pile response due to excavation induced lateral soil movement”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 123, No. 2, pp. 94-99, 1997 DOI: https://doi.org/10.1061/(ASCE)1090-0241(1997)123:2(94)
R. Butterfield, “A natural compression law for soils”, Geotechnique, Vol. 29, No. 4, pp. 469-480, 1979 DOI: https://doi.org/10.1680/geot.1979.29.4.469
B. C. B. Hsiung, “A case study on the behaviour of a deep excavation in sand”, Computer and Geotechnics, Vol. 36, No. 4, pp. 665–675, 2009 DOI: https://doi.org/10.1016/j.compgeo.2008.10.003
D. Liyanapathirana, R. Nishanthan, “Influence of deep excavation induced ground movements on adjacent piles”, Tunnelling and Underground Space Technology, Vol. 52, pp. 168-181, 2016 DOI: https://doi.org/10.1016/j.tust.2015.11.019
A. Niemunis, I. Herle, “Hypoplastic model for cohesionless soils with elastic strain range”, Mechanics of Cohesive-Frictional Materials, Vol. 2, No. 4, pp. 279-299, 1997 DOI: https://doi.org/10.1002/(SICI)1099-1484(199710)2:4<279::AID-CFM29>3.0.CO;2-8
D. Masin, J. Bohac, P. Tuma, “Modelling of a deep excavation in a silty clay”, in: Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering, Athens, Greece, Vol. 3, pp. 1509-1514, 2011
P. Mayne, F. Kulhawy, “K0-OCR relationships in soils”, Journal of Geotechnical Engineering, Vol. 108, No. 6, pp. 851-872, 1982
N. Loganathan, H. G. Poulos, D. P. Stewart, “Centrifuge model testing of tunnelling-induced ground and pile deformations”, Geotechnique, Vol. 50, No. 3, pp. 283-294, 2000 DOI: https://doi.org/10.1680/geot.2000.50.3.283
C. W. W. Ng, T. L. Y. Yau, J. H. M. Li, W. H. Tang, “New failure load criterion for large diameter bored piles in weathered geomaterials”, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 127, No. 6, pp. 488-498, 2001 DOI: https://doi.org/10.1061/(ASCE)1090-0241(2001)127:6(488)
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