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http://dx.doi.org/10.12989/ose.2021.11.3.259

Effects of a floating wave barrier with square cross section on the wave-induced forces exerted to an offshore jacket structure  

Osgouei, Arash Dalili (Department of Civil Engineering, Maragheh Branch, Islamic Azad University)
Poursorkhabi, Ramin Vafaei (Department of Civil Engineering, Tabriz Branch, Islamic Azad University)
Maleki, Ahmad (Department of Civil Engineering, Maragheh Branch, Islamic Azad University)
Ahmadi, Hamid (Faculty of Civil Engineering, University of Tabriz)
Publication Information
Ocean Systems Engineering / v.11, no.3, 2021 , pp. 259-274 More about this Journal
Abstract
The main objective of the present research was investigating the effects of a floating wave barrier with square cross section 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 4m 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. Results showed that the average decrease in the jacket's base shear due to the presence of a floating wave barrier with square cross section was 18.97%. The use of wave barriers with square cross section also resulted in 19.78% decrease in the jacket's overturning moment. Hence, it can be concluded that a floating wave barrier can significantly reduce the base shear and overturning moment in an offshore jacket structure.
Keywords
base shear; floating wave barrier; jacket structure; NIMALA wave flume; overturning moment; random waves;
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