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RESEARCH PAPERS: Offshore Mechanics

Structure-Wave Interaction Under Earthquake Excitation

[+] Author and Article Information
K. Kokkinowrachos

Technical University Aachen and Technical University Hamburg-Harburg, Hamburg, Federal Republic of Germany

I. Thanos

Technical University, Aachen, Federal Republic of Germany

J. Offshore Mech. Arct. Eng 112(1), 65-73 (Feb 01, 1990) (9 pages) doi:10.1115/1.2919837 History: Received January 01, 1987; Revised July 24, 1989

Abstract

A method for the hydrodynamic analysis of large bottom-fixed offshore structures under earthquake action is presented. The investigation deals with arbitrarily shaped vertical bodies of revolution, to which the so-called macroelement method can be applied. The structure is considered here as rigid, the compressibility of the surrounding water has been taken into account. Numerical results for several bottom-mounted structures give information on the earthquake-induced hydrodynamic forces and their parts (added mass and damping). The effectiveness of the macroelement method is demonstrated. The influence of geometrical shape, relative dimensions, water depth and water compressibility is shown.

Copyright © 1990 by The American Society of Mechanical Engineers
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