Failure Envelope Approach for Consolidated Undrained Capacity of Shallow Foundations
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 8
Abstract
A generalized framework is applied to predict consolidated undrained VHM failure envelopes for surface circular and strip foundations. The failure envelopes for consolidated undrained conditions are shown to be scaled from those for unconsolidated undrained conditions by the uniaxial consolidated undrained capacities, which are predicted through a theoretical framework based on fundamental critical state soil mechanics. The framework is applied to results from small-strain finite-element analyses for a strip and circular foundation of selected foundation dimension and soil conditions, and the versatility of the framework is validated through a parametric study. The generalized theoretical framework enables consolidated undrained VHM failure envelopes to be determined for a practical range of foundation sizes and linearly increasing soil shear-strength profiles through the expressions presented in this paper.
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Acknowledgments
This work forms part of the activities of the Centre for Offshore Foundation Systems (COFS). Established in 1997 under the Australian Research Council’s Special Research Centres Program. Supported as a node of the Australian Research Council’s Centre of Excellence for Geotechnical Science and Engineering, and through the Fugro Chair in Geotechnics, the Lloyd’s Register Foundation Chair and Centre of Excellence in Offshore Foundations and the Shell EMI Chair in Offshore Engineering. The second author is supported through ARC grant CE110001009. The work presented in this paper is supported through ARC grant DP140100684. This support is gratefully acknowledged.
References
Booker, J. R., and Small, J. C (1986). “The behaviour of an impermeable flexible raft on a deep layer of consolidating soil.” Int. J. Numer. Anal. Methods Geomech., 10(3), 311–327.
Bransby, M. F. (2002). “The undrained inclined load capacity of shallow foundations after consolidation under vertical loads.” Proc., 8th Int. Symp. NUMOG VIII, G. N. Pande and S. Pietruszczak, eds., Taylor & Francis, 431–437.
Bransby, M. F., and Randolph, M. F. (1998). “Combined loading of skirted foundations.” Géotechnique, 48(5), 637–655.
Bransby, M. F., and Yun, G. J. (2009). “The undrained capacity of skirted strip foundations under combined loading.” Géotechnique, 59(2), 115–125.
Chatterjee, S., Yan, Y., Randolph, M. F., and White, D. J. (2012). “Elastoplastic consolidation beneath shallowly embedded offshore pipelines.” Géotech. Lett., 2(2), 73–79.
Chen, W. (2005). “Uniaxial behaviour of suction caissons in soft deposits in deepwater.” Ph.D. thesis, Univ. of Western Australia, Australia.
Dassault Systèmes. (2012). Abaqus analysis user’s manual, Simulia, Providence, RI.
Feng, X., Randolph, M. F., Gourvenec, S., and Wallerand, R. (2014). “Design approach for rectangular mudmats under fully three dimensional loading.” Géotechnique, 64(1), 51–63.
Fu, D., Gaudin, C., Tian, C., Bienen, B., and Cassidy, M. J. (2015). “Effects of preloading with consolidation on undrained bearing capacity of skirted circular footings.” Géotechnique, 65(3), 231–246.
Gourvenec, S. (2007a). “Failure envelopes for offshore shallow foundations under general loading.” Géotechnique, 57(9), 715–728.
Gourvenec, S. (2007b). “Shape effects on the capacity of rectangular footings under general loading.” Géotechnique, 57(8), 637–646.
Gourvenec, S., and Barnett, S. (2011). “Undrained failure envelope for skirted foundations under general loading.” Géotechnique, 61(3), 263–270.
Gourvenec, S., and Randolph, M. F. (2003). “Effect of strength non-homogeneity on the shape and failure envelopes for combined loading of strip and circular foundations on clay.” Géotechnique, 53(6), 575–586.
Gourvenec, S., and Randolph, M. F. (2010). “Consolidation beneath skirted foundations due to sustained loading.” Int. J. Geomech., 22–29.
Gourvenec, S. M., Vulpe, C., and Murthy, T. G. (2014). “A method for predicting the consolidated undrained bearing capacity of shallow foundations.” Géotechnique, 64(3), 215–225.
Lehane, B. M., and Gaudin, C. (2005). “Effects of drained pre-loading on the performance of shallow foundations on over consolidated clay.” 24th Int. Conf. on Offshore Mechanics and Arctic Engineering, Vol. 2, ASME.
Lehane, B. M., and Jardine, R. J. (2003). “Effects of long-term preloading on the performance of a footing on clay.” Géotechnique, 53(8), 689–695.
Martin, C. M. (2003). “New software for rigorous bearing capacity calculations.” Proc., British Geotechnical Association Int. Conf. on Foundations, Thomas Telford, London, 581–592.
Martin, C. M., and Houlsby, G. T. (2001). “Combined loading of spudcan foundations on clay: Numerical modelling.” Géotechnique, 51(8), 687–699.
Murff, J. D., and Hamilton, J. M. (1993). “P-ultimate for undrained analysis of laterally loaded piles.” J. Geotech. Eng. Div., 91–107.
Potts, D. M., and Zdravkovic, L. (1999). Finite element analysis in geotechnical engineering—Theory, Thomas Telford, London.
Randolph, M. F and Puzrin, A. M (2003). “Upper bound limit analysis of circular foundations on clay under general loading.” Géotechnique, 53(9), 785–796.
Schofield, A. N., and Wroth, C. P. (1968). Critical state soil mechanics, McGraw-Hill, London.
Stewart, D. P. (1992). “Lateral loading of pile bridge abutments due to embankment construction.” Ph.D. thesis, Univ. of Western Australia, Australia.
Taiebat, H. A., and Carter, J. P. (2000). “Numerical studies of the bearing capacity of shallow foundations on cohesive soil subjected to combined loading.” Géotechnique, 50(4), 409–418.
Tani, K., and Craig, W. H. (1995). “Bearing capacity of circular foundations on soft clay of strength increasing with depth.” Soils Found., 35(4), 21–35.
Ukritchon, B., Whittle, A. J., and Sloan, S. W. (1998). “Undrained limit analysis for combined loading of strip footings on clay.” J. Geotech. Geoenviron. Eng., 265–276.
Vulpe, C., Bienen, B., and Gaudin, C. (2013). “Predicting the undrained capacity of skirted spudcans under combined loading.” Ocean Eng., 74, 178–188.
Vulpe, C., and Gourvenec, S. (2014). “Effect of preloading on the response of a shallow skirted foundation.” Proc., 14th Int. Conf. of Int. Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014, ASME, New York.
Vulpe, C., Gourvenec, S., and Power, M. (2014). “A generalised failure envelope for undrained capacity of circular shallow foundations under general loading.” Géotech. Lett., 4(3), 187–196.
Yun, G., and Bransby, M. F. (2007). “The undrained vertical bearing capacity of skirted foundations.” Soils Found., 47(3), 493–505.
Zdravkovic, L., Potts, D. M., and Jackson, C. (2003). “Numerical study of the effect of preloading on undrained bearing capacity.” Int. J. Geomech., 1–10.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 8 • August 2016
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© 2016 American Society of Civil Engineers.
History
Received: Aug 29, 2014
Accepted: Jan 11, 2016
Published online: Apr 22, 2016
Published in print: Aug 1, 2016
Discussion open until: Sep 22, 2016
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