Alternative Method to Determine Extreme Hydrodynamic Forces with Data Limitations for Offshore Engineering
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 145, Issue 2
Abstract
This study aims to identify limitations during hydrodynamic forces estimation in offshore design standards, such as the RP 2A-WSD-2014, and presents an alternative method to estimate the hydrodynamics forces considering nonlinearities due to ocean–atmosphere interaction. La Guajira, Colombia, was the location as a study case for the proposed method. Simulating waves nearshore (SWAN) and Delft3D models were adapted for three scenarios of extreme waves. The calculation of hydrodynamic force profiles through the RP 2A-WSD-2014 method and the proposed method shows that the traditional method cannot reproduce current profiles associated to hydrodynamic nonlinear interactions. The analysis included sensitivity tests for the hydrodynamic model data; also, a structural numerical model using SAP2000 was built to assess the structural stability of a ductile monopile structure (stress and deformation analysis). The structural model intends to generate a contribution for predesign and reliability considerations. Finally, the method contributes to solve the data restrictions and guide to engineers to set objective security factors considering the theoretical profiles and numerical modeling.
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Acknowledgments
The authors offer thanks for the support through the scholarship offered to Juan Rueda-Bayona as a graduate student at the Universidad Nacional de Colombia, Sede Medellín (Res. 002-2012) and Universidad del Norte, Barranquilla [doctoral fellowship (2013–2017) Grant UN-OJ-2013-22058]. Also, thanks for the support offered by the research groups OCEANICOS (Universidad Nacional de Colombia, Sede Medellín), GIEG (Universidad del Norte), and IDEHA (Universidad del Norte).
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 145 • Issue 2 • March 2019
Copyright
© 2018 American Society of Civil Engineers.
History
Received: May 16, 2017
Accepted: Jul 23, 2018
Published online: Dec 5, 2018
Published in print: Mar 1, 2019
Discussion open until: May 5, 2019
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