Effects of Current Velocity and Profile on Loading of Off Shore Jacket Structure

Iberahin Jusoh and Shadi M.A. Munshi

doi:https://doi.org/10.14445/22315381/IJETT-V59P218

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Volume 59 | Number 1 | Year 2018 | Article Id. IJETT-V59P218 | DOI : https://doi.org/10.14445/22315381/IJETT-V59P218

Effects of Current Velocity and Profile on Loading of Off Shore Jacket Structure

Iberahin Jusoh and Shadi M.A. Munshi

Citation :

Iberahin Jusoh and Shadi M.A. Munshi, "Effects of Current Velocity and Profile on Loading of Off Shore Jacket Structure," International Journal of Engineering Trends and Technology (IJETT), vol. 59, no. 1, pp. 108-112, 2018. Crossref, https://doi.org/10.14445/22315381/IJETT-V59P218

Abstract

A jacket structure installed on the seabed will experience external loading mainly from the environment. Current-structure interaction is known to directly contribute in the increment of total environmental load. In addition, current profile as well as the magnitude of it velocity may affects it final contribution of external loading on the structure. In this paper, the effects of current parameter and profile on loading of off shore jacket structure is investigated. Details studies focused on current velocity, wave-current interaction and current profiles affecting the magnitude of base shear and overturning moment on a typical shallow water jacket structure. In this study, the result shows there is significant effect of current velocity on the loading of drag dominated structure.

Keywords

jacket structure, current velocity ratio, wave-current interaction, current profile.

References

[1]. Jusoh, I., “Response of Jacket Structure to Variation in Wave Height and Water Depth”, Int J of Eng Res and Tech, Vol.6(12), Dec 2017.
[2]. Wolfram, J., "Fluid loading on offshore platform as a result of soft marine growth: A state of the art report". Report for BP Intl. Ltd., 1988.
[3]. Jusoh, I., “Base Shear and Overturning Moment on Jacket Platform with Marine Growth” Int J Eng Trend and Tech, Vol 58(01), April 2018.
[4]. Morison, J.R, O’Brien, M.P., Johnson, J.W. and Schaaf, S.A., “The force exerted by surface waves on piles”, Petroleum Transactions, ASME, 189. 1950.
[5]. Dean, R.G. and Dalrymple, R.A., Water Wave Mechanics for Engineers and Scientists, ed. World Scientific. New Jersey. 1991.
[6]. Atkins, "Sensitivity of shallow water jacket structures to uncertainties in environmental loading." Report OTH88 273, Atkins Oil & Gas Engineering for the D. o. Energy, HMSO. London. 1988.
[7]. D. En., "Offshore Installations: Guidance on design, construction and certification, 4th Edition", Section 11: Environmental considerations. London. 1990.
[8]. Mendes, A.C., Kolodziej, J.A. and Correia, H.J.D, “Numerical modelling of the wave-current loading on offshore jacket structures”, Transaction of the Built Environment. Vol.71, 2004.