Structural Response of Offshore Monopile Foundations to Ocean Waves

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Title Structural Response of Offshore Monopile Foundations to Ocean Waves
Author Li, Miao; Song, Hao; Zhang, Hong; Guan, Hong
Publication Title The Proceedings of The Ninth (2010) ISOPE Pacific/ Asia Offshore Mechanics Symposium (PACOMS-2010)
Editor Jin S. Chung, Seok Won Hong, Han-il Park, Sa Young Hong
Year Published 2010
Place of publication Danvers, USA
Publisher The International Society of Offshore and Polar Engineers
Abstract Offshore monopile foundations are one of the most commonly used foundation concepts in offshore renewable energy, especially in areas with relatively shallow water. They are characterised by relatively large geometric dimensions compared with other offshore pile foundations and are distinguished from onshore piles by suffering from harsh ocean environments during their lifetime. One of the most significant aspects is associated with the wave effect on the behaviour of monopile foundations. To date, research has been conducted in the development of numerical models, which are capable of providing sophisticated and flexible representations of the monopile foundations. In this study, a three-dimensional scaled boundary finite element model (SBFEM) is proposed to investigate the structural response of the monopile foundations when exposed to ocean waves. Unlike other numerical techniques, SBFEM provides an analytical solution in the radial direction with numerical approximation along the circumferential and top faces of the monopile foundation, which considerably reduces the computational effort. The SBFEM model is validated by an equivalent finite element model, by which favourable computational efficiency and reliable accuracy are demonstrated. Subsequently, a parametric study is carried out in terms of various wave properties to gain an insight into the monopile behaviour. The purpose of this study is to make recommendations for improving the design of offshore monopile foundations, when wave load is a dominant factor.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.isope.org/publications/publications.htm
Copyright Statement Copyright 2010 ISOPE . The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the conference's website for access to the definitive, published version.
ISBN 978-1-880653-79-1
Conference name Ninth (2010) ISOPE Pacific/ Asia Offshore Mechanics Symposium (PACOMS-2010)
Location Busan, Korea,
Date From 2010-11-14
Date To 2010-11-17
URI http://hdl.handle.net/10072/37725
Date Accessioned 2011-01-27
Date Available 2011-09-07T06:12:22Z
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Ocean Engineering; Theoretical and Applied Mechanics
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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