Journal article
Undrained capacity of a hybrid subsea skirted mat with caissons under combined loading
D Fu, B Bienen, C Gaudin, M Cassidy
Canadian Geotechnical Journal | CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS | Published : 2014
Abstract
Skirted mudmats are commonly used to support offshore infrastructure. However, these may not be able to provide sufficient capacity to notably withstand the lateral loads applied by jumpers and connectors. The concept of hybrid foundation system was therefore proposed to enhance the capacity in a targeted fashion, through addition of internal suction caisson compartments. This paper presents a numerical investigation into the undrained bearing capacity of a rectangular-shaped hybrid foundation with two caisson units. Uniaxial capacities under vertical, horizontal, and moment loading are reported, but the focus lies on the horizontal–moment planes due to the anticipated low vertical load on t..
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Funding Acknowledgements
This project forms part of ongoing collaborations between Keppel Offshore & Marine Technology Centre and the Centre for Offshore Foundation Systems. Support through the Australian Research Council's (ARC) Linkage Program LP0989433 as well as Keppel's contribution and permission to report these results are gratefully acknowledged. The work described here forms part of the activities of the Centre for Offshore Foundation Systems (COFS), the ARC Centre of Excellence in Geotechnical Science and Engineering, and Lloyd's Register Foundation Chair and Research Centre of Excellence in Offshore Foundations. Lloyd's Register Foundation invests in science, engineering, and technology for public benefit, worldwide. The second author acknowledges the support of the ARC through their Australian Postdoctoral Fellowship (DP110101603).