Undrained Sliding Resistance of Shallow Foundations Subject to Torsion
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 8
Abstract
Although the behavior of shallow foundations under vertical load combinations has been the subject of numerous studies, the response of shallow foundations subjected to combined horizontal and torsional loading has received considerably less attention. New offshore applications of shallow foundations for liquid natural gas facilities and other subsea structures have underscored the importance of the behavior of shallow embedded foundations subjected to combined in-plane translation and torsion. This study investigates the undrained bearing capacity of rectangular and square shallow foundations under eccentric horizontal loads through comparisons of various limit-equilibrium and plastic-limit analysis solutions to three-dimensional finite-element (FE) solutions. In general, the plastic-limit approach considered in this paper agrees well with the FE solutions, although it has some tendency to overpredict capacity at greater embedment depths. The studies revealed a general insensitivity in the shape of the yield envelope to variations in embedment depth, which permits a simplified analysis suitable for first-order estimates of load capacity. The variables considered in this study include footing aspect ratio, embedment depth, and load direction in addition to eccentricity.
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References
ABAQUS 6.6 [Computer software]. Waltham, MA, Dassault Systèmes.
American Petroleum Institute (API). (2000). “Recommended practice for planning, designing and constructing fixed offshore platforms-working stresses design.” API RP2A, 21st Ed., Washington, DC.
Bransby, M. F., and Randolph, M. F. (1998). “Combined loading of skirted foundations.” Geotechnique, 48(5), 637–655.
Chen, W. F., and Liu, X. L. (1990). Limit analysis and soil plasticity, Elsevier, Amsterdam, Netherlands.
Det Norske Veritas (DNV). (1992). “Foundations.” Classification Notes No. 30.4, Oslo, Norway.
Dimmock, P., Clukey, E., Randolph, M. F., Murff, D., and Gaudin, C. (2013). “Hybrid subsea foundations for subsea equipment.” J. Geotech. Geoenviron. Eng., 2182–2192.
Finnie, I. M. S., and Morgan, N. (2004). “Torsional loading of subsea structures.” Proc., 14th Int. Offshore and Polar Engineering Conf. (ISOPE), J. S. Chung, K. Izumiyama, M. Sayed, and S. W. Hong, eds., International Society of Offshore and Polar Engineers, Cupertino, CA, 326–333.
Fisher, R., and Cathie, D. (2002). “Gravity based design for subsea structures.” Proc., Int. Conf. on Offshore Site Investigation and Geotechnics, Society for Underwater Technology, Houston.
Gourvenec, S., Randolph, M., and Kingsnorth, O. (2006). “Undrained bearing capacity of square and rectangular footings.” Int. J. Geomech., 147–157.
ISO. (2003). “Petroleum and natural gas industries-specific requirements for offshore structures, part 4: Geotechnical and foundation design.” 19901-4:2003(E), Geneva.
Murff, J. D., Aubeny, C. P., and Yang, M. (2010). “The effect of torsion on the sliding resistance of rectangular foundations.” Proc., 2nd Int. Symp. on Frontiers in Offshore Geotechnics (ISFOG), S. Gourvenec and D. White, eds., CRC Press, Boca Raton, FL, 439–444.
Murff, J. D., and Miller, T. W. (1977). “Stability of offshore gravity structure foundations by the upper bound method.” Proc., Offshore Technology Conf. (OTC), Offshore Technology Conference, Houston.
Randolph, M. F., Gaudin, C., Gourvenec, S. M., White, D. J., Boylan, N., and Cassidy, M. J. (2011). “Recent advances in offshore geotechnics for deep water oil and gas developments.” Ocean Eng., 38(7), 818–834.
Tan, F. (1990). “Centrifuge and theoretical modelling of conical footings on sand.” Ph.D. thesis, Univ. of Cambridge, Cambridge, U.K.
Yun, G. J., Maconochie, A., Oliphant, J., and Bransby, M. F. (2009). “Undrained capacity of surface footings subjected to combined V-H-T loading.” Proc., 19th Int. Offshore and Polar Engineering Conf. (ISOPE), J. S. Chung, S. Prinsenberg, S. W. Hong, and S. Nagata, eds., Int. Society of Offshore and Polar Engineers, Cupertino, CA, 9–14.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 140 • Issue 8 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 10, 2013
Accepted: Mar 28, 2014
Published online: May 2, 2014
Published in print: Aug 1, 2014
Discussion open until: Oct 2, 2014
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