Effects of floating wave barriers on wave-induced forces exerted to offshore-jacket structure

Osgouei, Arash Dalili and Poursorkhabi, Ramin Vafaei and Hosseini, Hamed and Qader, Diyar N. and Maleki, Ahmad and Ahmadi, Hamid ORCID: https://orcid.org/0000-0002-6192-6275 (2022) Effects of floating wave barriers on wave-induced forces exerted to offshore-jacket structure. Structural Engineering and Mechanics, 83 (1). pp. 53-66. ISSN 1225-4568


Abstract

The main objective of the present research was investigating the effects of a floating wave barrier installed in front of an offshore jacket structure on the wave height, base shear, and overturning moment. A jacket model with the height of 4.55 m was fabricated and tested in the 402 m-long wave flume of NIMALA marine laboratory. The jacket was tested at the water depth of 4 m subjected to the random waves with a JONSWAP energy spectrum. Three input wave heights were chosen for the tests: 20 cm, 23 cm, and 28 cm. Two different cross sections with the same area were selected for the wave barrier: square and rhombus. Results showed that the average decrease in the jacket's base shear due to the presence of a floating wave barrier with square and rhombus cross section was 24.67% and 34.29%, respectively. The use of wave barriers with square and rhombus cross sections also resulted in 19.78% and 33.11% decrease in the jacket's overturning moment, respectively. Hence, it can be concluded that a floating wave barrier can significantly reduce the base shear and overturning moment in an offshore jacket structure; and a rhombus cross section is more effective than an equivalent square section.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 28 Jul 2022 05:15
Last Modified: 30 Sep 2022 02:09
Uncontrolled Keywords: Floating wave barrier, Jacket structure, NIMALA wave flume; Overturning moment, Random waves
Fields of Research (2020): 40 ENGINEERING > 4015 Maritime engineering > 401504 Ship and platform structures (incl. maritime hydrodynamics)
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
Socio-Economic Objectives (2020): 17 ENERGY > 1702 Energy exploration > 170203 Oil and gas exploration
Identification Number or DOI: doi:10.12989/sem.2022.83.1.053
URI: http://eprints.usq.edu.au/id/eprint/50521

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