Wave Forces on Rigid Pipes Using Ocean Test Data

by Robert A. Grace, Visiting Prof.; Oregon State Univ., Dept. of Civ. Engrg., Corvallis, Oreg. 97331; on leave from Dept. of Civ. Engrg., Univ. of Hawaii at Manoa, Honolulu, Hawaii,
Gabriel T.Y. Zee, Engr.; United States Navy Shipyard, Pearl Harbor, Hawaii; formerly, Grad. Student, Univ. of Hawaii at Manoa, Dept. of Ocean Engrg., Honolulu, Hawaii,

Serial Information: Journal of the Waterway Port Coastal and Ocean Division, 1981, Vol. 107, Issue 2, Pg. 71-92

Document Type: Journal Paper


A test pipe rig was designed, fabricated, and then placed in the ocean, offshore from Honolulu. The pipe diameter was 16 inches, its length 17.5 feet, and the water depth was 37 feet. During four seasons of swell from Southern Hemisphere winter storms, data were obtained for the forces exerted on a 40-inch-long portion of the test pipe. Four separate angles between the swell fronts and the test pipe were involved: 0°, 15°, 35°, and 52°. the measured forces were combined with concurrently measured wave-induced kinematic values to derive horizontal and vertical pipe force coefficients of use to offshore pipeline designers.

Subject Headings: Wave forces | Rigid pipes | Ocean engineering | Field tests | Kinematic waves | Pipeline design | Fabrication | Water pipelines | Honolulu | Hawaii | United States

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