Pile Capacity for Axial Cyclic Loading by D. V. Griffiths
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 1
Abstract
The effects of cyclic loadings from storm waves on the axial capacity of piles driven in cohesive soils and supporting offshore platforms is described. An advanced analytical procedure is developed to estimate pile penetrations and to evaluate the pile performance when a platform is subjected to intense cyclic loadings. The procedure is illustrated with application to a platform located in a water depth of 1,000 ft (305 m) in the Gulf of Mexico. Loading rates, ratio of steady to cyclic load amplitudes, the sequencing and numbers of cycles of loading, and relative pile‐soil stiffness are indicated to be important parameters that determine pile performance. Cyclic loadings and high rates of cyclic loadings have compensating effects on pile capacities. For the example location soils and piles, the limited numbers of cycles of intense design storm loadings result in significant strength degradation in the upper two‐thirds of the pile length. The bottom one‐third of the pile provides the margin of safety for loadings that could exceed those of the design storm.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Arup, O. (1986), “Research on the behavior of piles as anchors for buoyant structures—Summary report.” Offshore Tech. Report OTH 86‐215, Dept. of Energy, London, England, Mar.
2.
Bea, R. G. (1980). “Dynamic response of piles in offshore platforms.” Proc. Dynamic response of pile foundations—Analytical aspects, ASCE, 126–150.
3.
Bea, R. G. (1984). “Dynamic response of marine foundations.” Proc. of Ocean Struct. Dynamics Symp. '84, Oregon State University, 120–130.
4.
Bea, R. G., and Audibert, J. M. E. (1979). “Performance of dynamically loaded pile foundations.” Proc. of 2nd Int. Conf. on Behavior of Offshore Structures, BOSS '79, Imperial College, London, England, 477–490.
5.
Bea, R. G. Litton, R. W., Nour‐Omid, S., Chang, J. Y., and Vaish, A. K. (1984). “A specialized design and research tool for the modeling for near‐field pile‐soil interactions.” Proc. Offshore Tech. Conf., Society of Petroleum Engineers, 450‐66.
6.
Bogard, D., and Matlock, H. (1990a). “In‐situ model pile experiments at Empire, Louisiana.” Proc. Offshore Tech. Conf., Society of Petroleum Engineers, 223–230.
7.
Bogard, D., and Matlock, H. (1990b). “In‐situ model pile experiments at Harvey, Louisiana.” Proc. Offshore Tech. Conf., Society of Petroleum Engineers, 231—240.
8.
Briaud, J.‐L., Felio, G., and Tucker, L. (1984). “Influence of cyclic loading on axially loaded piles in clay.” PRAC 83‐42, Pile Response to Static and Dynamic Loads, Am. Petroleum Inst., Dallas, Tex., Dec.
9.
Briaud, J.‐L., and Garland, E. (1984). “Influence of loading rate on axially loaded piles in clay.” PRAC 82‐42, Pile response to static and dynamic loads, Am. Petroleum Inst., Dallas, Tex.
10.
Dunnavant, T. W., Clukey, E. C., and Murff, J. D. (1990). “Effects of cyclic loading and pile flexibility on axial pile capacities in clay.” Proc. Offshore Tech. Conf., Society of Petroleum Engineers, OTC 6378.
11.
Gallagher, K. A., and St. John, H. D. (1980). “Field scale model studies of piles as anchorages for buoyant platforms.” Proc. European Offshore Petroleum Conf., Society of Petroleum Engineers, 334–360.
12.
Karlsrud, K., and Kaugen, T. (1985). “Behavior of piles in clay under cyclic axial loading—Results of field model tests.” Proc. 4th Int. Conf. on Behavior of Offshore Structures, BOSS '85, Delft University, The Netherlands, 677–691.
13.
Karlsrud, K., Nadim, F., and Haugen, T. (1986). “Pile in clay under cyclic axial loading field tests and computational modeling.” Proc. 3rd Int. Conf. on Numerical Methods in Offshore Piling, French Petroleum Institute, Nates, France, 145–160.
14.
Kraft, L. M., Jr., Cox, W. R., and Verner, E. A. (1981). “Pile load tests: Cyclic loads and varying load rates.” J. Geotech. Engrg. Div., ASCE, 107(1), 233–245.
15.
Kraft, L. M., Jr., Ray, R. P., and Kagawa, T. (1981). “Theoretical T‐Z Curves.” J. Geotech. Engrg. Div., ASCE, 107(11), 110–121.
16.
Matlock, H., and Foo, S. H. C. (1979). “Axial analysis of piles using a hysteretic and degrading soil model.” Proc. Conf. on Numerical Methods in Offshore Piling, Inst. of Civ. Engrs., 276–291.
17.
McAnoy, R. P. L., Cashman, A. C., and Purvis, O. (1982). “Cyclic tensile testing of a pile in glacial till.” Proc. 2nd Int. Conf. on Numerical Methods in Offshore Piling, University of Texas, 121–133.
18.
McClelland, B., and Ehlers, C. J. (1986). “Offshore geotechnical site investigations.” Planning and design of fixed offshore platforms, Bramlette McClelland, and Michael D. Reifel, eds., Van Nostrand Reinhold Co., New York, N.Y., 224–284.
19.
Pelletier, J. H., and Doyle, E. H. (1982). “Tension capacity in silty clays—Beta pile test.” Proc. 2nd Int. Conf. on Numerical Methods in Offshore Piling, University of Texas, 334–420.
20.
Pelletier, J. H., and Sgouros, G. E. (1987). “Shear transfer behavior of a 30‐inch pile in silty clay.” Proc. Offshore Tech. Conf., OTC 5407, Houston, Texas 455–470.
21.
Poulos, H. G. (1983). “Cyclic axial pile response—Alternative analyses.” Proc. Conf. on Geotech. Practice in Offshore Engrg., ASCE, 455–490.
22.
Randolph, M. F., and Wroth, P. C. (1978). “Analysis and deformation of vertically loaded piles.” J. Geotech. Eng. Div., ASCE, 104(12), 55–69.
23.
Recommended practice for planning, designing, and constructing fixed offshore platforms. (1991). 19th Ed., Am. Petroleum Inst., Washington, D.C.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 1 • January 1992
Pages: 34 - 50
Copyright
Copyright © 1992 ASCE.
History
Published online: Jan 1, 1992
Published in print: Jan 1992
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.