Journal article

Observations of the Effects of a Clay Layer on Suction Bucket Installation in Sand

R Ragni, B Bienen, CD O'Loughlin, SA Stanier, MJ Cassidy, N Morgan

Journal of Geotechnical and Geoenvironmental Engineering | American Society of Civil Engineers | Published : 2020


Suction buckets are becoming established as a viable foundation solution for offshore wind turbines. In sand, suction-induced seepage flow reduces effective stresses at the skirt tips, which decreases penetration resistance. However, layered seabeds are often encountered in areas of offshore wind farm development. The effect of the presence of a clay layer on the suction-induced seepage flow in the sand layer is not well understood. Therefore in this study, the effects of a clay layer on suction bucket installation in dense sand was investigated. This was achieved by analyzing images of a half-bucket installed against a Perspex window. The images were captured during tests performed in a geo..

View full abstract

University of Melbourne Researchers


Awarded by Australian Research Council

Funding Acknowledgements

This work forms part of the activities of the Centre for Offshore Foundation Systems (COFS), which is currently supported as a Centre of Excellence by the Lloyd's Register Foundation. Lloyd's Register Foundation helps to protect life and property by supporting engineering-related education, public engagement and the application of research. This research is also supported through the Australian Research Council Linkage Project 180100024. The authors are grateful for this support. The views presented in this paper represent those of the authors and not necessarily those of their respective employers.