RESEARCH PAPERS: Offshore Mechanics

Probabilistic Collapse Analysis of Offshore Structure

[+] Author and Article Information
Y. Murotsu, S. Matsuzaki

Department of Aeronautical Engineering, University of Osaka Prefecture, Sakai, Osaka, Japan

M. Kishi, H. Okada, Y. Ikeda

Department of Naval Architecture, University of Osaka Prefecture, Sakai, Osaka, Japan

J. Offshore Mech. Arct. Eng 109(3), 270-277 (Aug 01, 1987) (8 pages) doi:10.1115/1.3257020 History: Received July 02, 1984; Revised September 04, 1986; Online October 30, 2009


This paper proposes a method for probabilistic collapse analysis of an offshore structure. Wave loads are estimated by using Stokes third-order theory and Morison’s formula. Plastic collapsing is evaluated by taking account of the combined load effect to generate the safety margins, using a matrix method. Probabilistically dominant collapse modes are selected through a branch-and-bound method. The proposed method is successfully applied to a jacket-type offshore platform.

Copyright © 1987 by ASME
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