TECHNICAL PAPERS
May 1, 1999

Wave Forces on Decks of Offshore Platforms

Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 125, Issue 3

Abstract

The wave crest height according to RP 2A of the American Petroleum Institute (API) is higher than the lower deck elevations of many existing platforms. The API guidelines to determine wave forces acting on the decks of these platforms indicate that most platforms cannot survive such loadings. The decks must either be removed or raised to clear the specified wave crests. A variety of laboratory tests have been performed to address this problem. Several approaches have been developed to compute the wave crest loadings and the responses of the platforms to the loadings. There have been many instances in which platforms have experienced significant wave loadings on their lower decks during hurricanes. Some of these platforms have survived and some have failed. This paper summarizes results from a study of the performance of platforms in the Gulf of Mexico that have survived and failed during hurricane wave loadings on their decks. Modifications to the API deck wave force guidelines are discussed and validated with platform field performance during past hurricanes.

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References

1.
Bea, R. G. ( 1975). “Gulf of Mexico hurricane wave heights.” J. Petroleum Technol., Vol. 41, Society of Petroleum Engineers, Richardson, Tex., 1160–1172.
2.
Bea, R. G. ( 1995). “Development and verification of a simplified method to evaluate storm loadings on and capacities of steel, templatetype platforms.” Proc., Energy and Envir. Expo 95, ASME, New York.
3.
Bea, R. G. (1996). “Nonlinear performance of offshore platforms in extreme storm waves.”J. Wtrwy., Port, Coast. and Oc. Engrg., ASCE, 122(2), 68–74.
4.
Bea, R. G., and DesRoches, R. ( 1993). “Development and verification of a simplified procedure to estimate the capacity of template-type platforms.” Proc., 5th Int. Symp. Integrity of Offshore Struct., D. Faulkner et al., eds., Emas Scientific Publications, Glasgow, Scotland, 129–148.
5.
Bea, R. G., and Mortazavi, M. ( 1995). “Simplified evaluation of the capacities of template-type offshore platforms.” Proc., 5th Int. Offshore and Polar Engrg. Conf., International Society of Offshore and Polar Engineers, Golden, Colo.
6.
Bea, R. G., Mortazavi, M. M., and Loch, K. J. (1997). “Evaluation of storm loadings on and capacities of offshore platforms.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 123(2), 73–81.
7.
Bea, R. G., Mortazavi, M., Loch, K. J., and Young, P. L. ( 1995). “Verification of a simplified method to evaluate the capacities of template-type platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
8.
Bea, R. G., Ramos, R., Valle, O., Valdes, V., and Maya, R. ( 1998). “Risk assessment and management based hurricane wave criteria for design and requalification of platforms in the Bay of Campeche.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
9.
Bea, R. G., and Young, C. ( 1993). “Loading and capacity effects on platform performance in extreme condition storm waves and earthquakes.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
10.
Botelho, D. L. R., Ullmann, R. R., Chancellor, D. P., and Versowsky, P. E. ( 1994). “A survey of the structural damage caused by Hurricane Andrew on some of the platforms located in the South Timbalier area.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
11.
Broughton, P., and Horn, E. ( 1987). “Ekofisk Platform 2/4C: Re-analysis due to subsidence.” Proc., Inst. of Civ. Engrs., London, Part 1, 82.
12.
Cardone, V. J., and Cox, A. T. ( 1992). “Hindcast study of Hurricane Andrew, offshore Gulf of Mexico.” Rep. Joint Industry Project, Oceanweather Inc., Cos Cob, Conn.
13.
Cardone, V. J., et al. ( 1994). “Final report—Hindcast study of wind wave and current fields in Hurricane Andrew—Gulf of Mexico.” Rep. to Minerals Management Service, Department of Interior, Herndon, Va.
14.
Chaplin, J. R., and Flintham, T. P. ( 1990). “Breaking wave forces on a vertical cylinder.” Rep. No. OTH 90 324 to Health and Safety Executive, London.
15.
Dalane, J. I., and Haver, S. ( 1995). “Requalification of an unmanned jacket structure using reliability methods.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
16.
Dean R. G., and Dalrymple, R. A. ( 1984). Water wave mechanics for engineers and scientists. Prentice-Hall, Englewood Cliffs, N.J.
17.
Dean R. G., Dalrymple, R. A., and Hudspeth, R. T. ( 1981). “Force coefficients from wave project I and II data including free surface effects.” Soc. Petr. Engrs. J., 51, 1120–1126.
18.
Dean R. G., Torum, A., and Kjeldsen, S. P. ( 1985). “Wave forces on a pile in the surface zone from the wave crest to the wave trough.” Proc., Int. Symp. on Separated Flow Around Marine Struct., Norwegian Institute of Technology, Trondheim, Norway.
19.
Environmental conditions and environmental loads. (1991). Classification Notes No. 30.5, Det norske Veritas, Oslo, Norway.
20.
Faltinsen, O., Kjarland, O., Nottveit, A., and Vinje, T. ( 1977). “Water impact loads and dynamic response of horizontal circular cylinders in offshore structures.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
21.
Finnigan, T. D., and Petrauskas, C. ( 1997). “Wave—in deck forces.” Proc., 6h Int. Offshore and Polar Engrg. Conf., International Society of Offshore and Polar Engineers, Golden, Colo.
22.
Imm, G. R., O'Connor, J. M., Light, J. M., and Stahl, B. ( 1994). “South Timbalier 161A: A successful application platform requalification technology.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
23.
Isaacson, M., and Prasad, S. ( 1992). “Wave slamming on a horizontal circular cylinder.” Proc., Civ. Engrg. in the Oceans V, R. T. Hudspeth, ed., ASCE, Reston, Va.
24.
Jue, M. C. ( 1993). “Extreme surface wave force on the supporting legs of offshore platforms,” MS thesis, Dept. of Naval Arch. and Offshore Engrg., University of California, Berkeley, Calif.
25.
Kaplan, P. ( 1992). “Wave impact forces on offshore structures: Re-examination and new interpretations.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
26.
Kaplan, P., Murray, J. J., and Yu, W. C. ( 1995). “Theoretical analysis of wave impact on platform deck structures.” Proc., Offshore Mech. and Arctic Engrg. Conf., ASME, New York.
27.
Kjeldsen, S. P., and Hasle, E. K. ( 1985a). “Ekofisk jacket—Model experiments.” Rep. No. NHL 85-0295, Norwegian Hydrodynamic Laboratories, Trondheim, Norway.
28.
Kjeldsen, S. P., and Hasle, E. K. ( 1985b). “Ekofisk jacket—Additional model experiments.” Rep. No. NHL 85-0296, Norwegian Hydrodynamic Laboratories, Trondheim, Norway.
29.
Kjeldsen, S. P., and Myrhaug, D. ( 1979). “Breaking waves in deep water and resulting wave forces.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
30.
Kjeldsen, S. P., Torum, A., and Dean, R. G. ( 1986). “Wave forces on vertical piles caused by 2- and 3-dimensional breaking waves.” Proc., Coast. Engrg. Conf., ASCE, Reston, Va.
31.
Loch, K. ( 1994). “The effects of wave induced vertical deck loads on ultimate limit state static pushover analyses results.” Rep., Marine Technology and Management Group, Dept. of Civ. and Envir. Engrg., University of California at Berkeley.
32.
Marshall, P. W., and Bea, R. G. ( 1977). “Failure modes of offshore platforms.” Proc., 1st Int. Conf. on Behavior of Off-Shore Struct., Boss '76, Vol. II, Trondheim, Norway.
33.
McDonald D. T., Bando, K., Bea, R. G., and Sobey, R. J. ( 1990). “Near surface wave forces on horizontal members and decks of offshore platforms.” Final Rep., Coastal and Hydraulic Engineering, Dept. of Civ. Engrg., University of California, Berkeley, Calif.
34.
Mes, M. J. ( 1990). “Wave crest forces on offshore platforms using irregular wave theory.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
35.
Murray, J. J., Kaplan, P., and Yu, W. C. ( 1995). “Experimental and analytical studies of wave impact forces on Ekofisk platform structures.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
36.
Murray, J. J., Winsor, F. N., and Kaplan, P. ( 1997). “Impact forces on a jacket deck in regular waves and irregular wave groups.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
37.
Petrauskas, C., Botelho, D. L. R., Krieger, W. F., and Griffin, J. J. ( 1994b). “A reliability model for offshore platforms and its application to ST 151 “H” and “K” platforms during Hurricane Andrew (1992).” Proc., Behavior of Offshore Struct. Sys., Boss '94, Massachusetts Institute of Technology, Cambridge, Mass.
38.
Petrauskas, C., et al. ( 1994a). “Metocean criteria/loads for use in assessment of existing offshore platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
39.
Recommended practice for planning, designing, and constructing fixed offshore platforms—Load and Resistance Factor Design (RP 2A-LRFD). (1993). American Petroleum Institute, Washington, D.C.
40.
Recommended practice for planning, designing, and constructing fixed offshore platforms—Working stress design, Supplement 1. (1996). American Petroleum Institute, Washington, D.C.
41.
Sarpkaya, T. ( 1978). “Wave impact loads on cylinders.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
42.
Sarpkaya, T., and Isaacson, M. ( 1981). Mechanics of wave forces on offshore structures. Van Nostrand Reinhold, New York.
43.
Schmucker, D. G. ( 1996). “Near failure behavior of jacket-type offshore platforms in the extreme wave environment.” Rep. No. RMS-21, Dept. of Civ. Engrg., Stanford University, Stanford, Calif.
44.
Schmucker, D. G., and Cornell, C. A. ( 1994). “Dynamic behavior of semi-ductile jackets under extreme wave and wave-in-deck forces.” Proc., Behavior of Off-Shore Struct., Boss '94, Massachusetts Institute of Technology, Cambridge, Mass.
45.
Stear, J., and Bea, R. G. ( 1997). “Ultimate limit state capacity analysis of two Gulf of Mexico platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
46.
Torum, A. ( 1985). “Wave forces on a pile in the surface zone, regular non-breaking waves (1985).” Res. Rep. No. 19, NTNF Research Project, Program for Marine Structures.
47.
Vannan, M. T., Thompson, H. M., Griffin, J. J., and Gelpi, S. L. ( 1994). “An automated procedure for platform strength assessment.” Proc., Offshore Technol. Conf., Society of Petroleum Engineers, Richardson, Tex.
48.
Weggel, J. R. (1997). “Discussion of `Breaking-wave loads on vertical walls suspended above mean sea level,' by E. S. Chan, H. F. Cheong, and K. Y. H. Gin.”J. Wtrwy., Port, Coast., and Oc. Engrg., ASCE, 123(3), 143–148.

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Go to Journal of Waterway, Port, Coastal, and Ocean Engineering
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 125Issue 3May 1999
Pages: 136 - 144

History

Published online: May 1, 1999
Published in print: May 1999

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Authors

Affiliations

Fellow, ASCE,
Prof., Dept. of Civ. and Envir. Engrg., Univ. of California, Berkeley, CA 94720-1712.
Postdoctoral Res., Marine Tech. and Mgmt. Group, Univ. of California, Berkeley, CA.
Doctoral Grad. Student Res., Univ. of California, Berkeley, CA.
Engr., Ofc. of Spec. Studies, Instituto de Mexicano del Petroleo, Mexico D.F.

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