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Numerical investigation of the undrained compression and pull-out capacity of suction foundations in clay

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Języki publikacji
EN
Abstrakty
EN
This paper presents the results of three-dimensional finite difference analysis of suction foundations in uniform and non-uniform clays under undrained conditions. The Tresca criterion was used to simulate the stress-strain response. The bearing capacity of the foundations was investigated, with the degree of nonhomogeneity (kD/sum) of soil varying from 0 to 5, and the embedment depth being up to four times the foundation diameter. The end bearing capacity factor in compression and the reverse bearing capacity factor in tension were both calculated and were compared with each other under different foundation displacements. Numerical results showed that the ultimate bearing capacity factor can have the same value in cases of both compression and tension. The recommended ultimate bearing capacity factor is determined on the basis of the embedment ratio and displacement magnitude, and the displacement is not more than 30% of the foundation diameter. Finally, two equations are proposed to evaluate both the bearing capacity factor and the effective depth factor.
Rocznik
Tom
S 1
Strony
126--135
Opis fizyczny
Bibliogr. 27 poz., rys.
Twórcy
autor
  • Department of Civil Engineering and State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200240 CHINA
autor
  • Department of Civil Engineering and State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
autor
  • Department of Civil Engineering and State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
autor
  • LUNAM University, Ecole Centrale de Nantes, GeM UMR CNRS, 6183, Nantes, France
Bibliografia
  • 1. Andersen, K.H., Murff, J.D., Randolph, M.F., Clukey, E.C., Erbrich,C.T., Jostad, H.P., et al.. Suction anchors for deepwater applications. In: Proceedings of the 1st International Symposium on Frontiers in Offshore Geotechnics, ISFOG, Perth. pp. 3-30,2005.
  • 2. Hossain, M. S. Lehane, B. M. Hu, Y. Gao, Y.. Soil flow mechanisms around and between stiffeners of caissons during installation in clay. Can. Geothch.J. 49(4), 442–459, 2012.
  • 3. Eason, G. & Shield. R. T.. The plastic indentation of a semi-infinite solid by a perfectly rough circular punch. J. Appl. Math. Phys. 11, No. 1, 33-43, 1960.
  • 4. Hu, Y., Randolph, M. F., and Watson, P. G.. Bearing response of skirted foundation on nonhomogeneous soil. J. Geotech. Geoenviron. Engng., ASCE 125, No. 11, 924–935.
  • 5. Houlsby, G. T. and Martin, C. M.. Undrained bearing capacity factors for conical footings on clay. Géotechnique 53, No. 5, 513–520, 2003.
  • 6. Salgado, R., Lyamin, A. V., Sloan, S. W. & Yu, H. S.. Two and three-dimensional bearing capacity of foundations in clay. Geotechnique 54, No. 5, 297–306, 2004.
  • 7. Edwards, D.H., Zdravkovic, L., Potts, D. M.. Depth factors for undrained bearing capacity. Géotechnique 55, No. 10, 755–758, 2005.
  • 8. Finn, W.D.L. and Byne, P.M.. The evaluation of the breakout force for a submerged ocean platform. Offshore Technology Conference, OTC 1604, Houston, pp351-365, 1972.
  • 9. Watson, P. G., Randolph, M. F., and Bransby, M. F.. “Combined lateral and vertical loading of caisson foundations.” Proc., Annual Offshore Technology Conf., Offshore Technology Conference, Houston, OTC 12195, 2005.
  • 10. Mana, D. S. K., Gourvenec, S. M., and Randolph, M. F.. “Experimental investigation of reverse end bearing of offshore shallow foundations.” Can. Geotech. J., 50(10), 1022–1033, 2013.
  • 11. Acosta-Martinez, H.E., Gourvenec, S.M., and Randolph, M.F.. An experimental investigation of a shallow skirted foundation under compression and tension. Soils and Foundations, 48(2): 247–254, 2008.
  • 12. Chatterjee, S., Randolph, M. F., and White, D. J.. “Large-deformation numerical modeling of short-term compression and uplift capacity of offshore shallow foundations.” J. Geotech. Geoenviron.Eng.140(3) 04013021-1-9, 2014.
  • 13. Tani, K., Craig, W.H.. Bearing capacity of circular foundations on soft clay of strength increasing with depth. Soils and Foundations, 35(4), pp 21-35, 1995.
  • 14. Brinch Hansen, J.. A revised and extended formula for bearing capacity, Bullentin NO.28. Danish Geotechnical Institute, 1970.
  • 15. Acosta-Martinez, H.E., Gourvenec, S.M., and Randolph, M.F.. Effect of gapping on the transient and sustained uplift capacity of a shallow skirted foundation in clay. Soils and Foundations, 50(5): 725–735, 2010.
  • 16. Gourvenec, S., Acosta-Martinez, H.E., Randolph, M.F.. Experimental study of uplift resistance of shallow skirted foundations in clay under transient and sustained concentric loading. Géotechnique 59, No. 6, 525–537, 2009.
  • 17. Rao, S.N.,Ravi, R.,Prasad, B.S.. “Pullout behavior of suction anchors in soft marine clays.” Marine georesources & geotechnology,15(2),95-114,1997.
  • 18. El-Gharbawy. S. L. The pullout capacity of suction caisson foundations. PhD thesis,The University of Texas at Austin,1998.
  • 19. Villalobos, F. A.,Byrne, B. W.,Houlsby, G. T. Model testing of suction caissons in clay subjected to vertical loading. Applied Ocean Research,32(4):414-424, 2010.
  • 20. Guo, Zhen,Wang, Li-Zhong,Yuan, Feng. Set-up and Pullout Mechanism of Suction Caisson in a Soft Clay Seabed.Marine Georesources & Geotechnology,32(2):135-154,2014.
  • 21. Watson, P.G., Suemasa, N. and Randolph, M.F..“Evaluating undrained shear strength using the vane shear apparatus.” Proc. 10th Int. Conf. On Offshore and Polar Engng,ISOPE 99, Seattle, 2, 485-493, 2000.
  • 22. Randolph, M. F.,House,A.R.. “Analysis of suction caisson capacity in clay” Proc., Annual Offshore Technology Conf., Offshore Technology Conference, Houston, OTC 14236, 2002.
  • 23. Skempton, A. W.. The bearing capacity of clays. Proc. Building Research Cong. London, 1, 180–189, 1951.
  • 24. Byrne, B.W., Cassidy, M.J.. Investigating the response of offshore foundations in soft clay soils. In: Proceedings of the 21st International Conference on Offshore Mechanics and Arctic Engineering OMAE’02, Oslo, paper OMAE2002- 28057, 2002.
  • 25. Hung, L. C. Kim, S. R. Evaluation of vertical and horizontal bearing capacities of bucket foundations in clay. Ocean Engineering, 52, pp.75–82, 2012.
  • 26. Gourvenec, S.Effect of embedment on the undrained capacity of shallow foundations under general loading Géotechnique,58(3):177-185, 2008.
  • 27. Det Norske Veritas. Geotechnical Design and Installation of Suction Anchors in Clay. DNV Recommended Practice RP-E303, 2005.
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-2ff52969-1067-4a7e-88a9-d745a57e3076
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