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RESEARCH PAPERS: Offshore Mechanics/Ocean Engineering

Dynamic Motions of Marine Pipelines on the Ocean Bottom

[+] Author and Article Information
A. J. Healey

Marine Division, Brown and Root, Inc., Houston, Tex. 77001

Y. G. T. Seo

Korean Naval Academy, Chinhae, Kyung Nam Do, Korea

J. Energy Resour. Technol 106(1), 65-69 (Mar 01, 1984) (5 pages) doi:10.1115/1.3231027 History: Received November 01, 1982; Revised October 24, 1983; Online October 22, 2009

Abstract

This paper describes a dynamic model of a pipeline portion exposed to wave and current forces for the purpose of assessing on bottom stability. When an exposed span is marginally stable, and trenching not possible, some motion in the presence of an extreme wave may be tolerable. Analysis of a particular case shows that a few feet of movement would occur with a 100-yr wave. The final configuration after passage of one wave is given by the analytical model and it is predicted that a moderate residual stress would be induced. It is concluded that this kind of analysis—on a case by case basis—could be used to assess risk of pipeline damage due to storm-induced movement.

Copyright © 1984 by ASME
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