Bayton, S.M. and Black, J.A. orcid.org/0000-0002-3529-6708 (2019) The effect of scour on monopile lateral behaviour. In: Proceedings of the XVII European Conference on Soil Mechanics and Geotechnical Engineering - ECSMGE. XVII European Conference on Soil Mechanics and Geotechnical Engineering - ECSMGE, 01-06 Sep 2019, Reykjavik, Iceland. International Society for Soil Mechanics and Geotechnical Engineering ISBN 9789935943613
Abstract
A series of centrifuge experiments examining the effect of scour hole formation on the lateral ultimate limit state (ULS) behaviour of monopiles is presented. Model foundation tests were performed at 100 gravities (100g) of a prototype pile 5 m in diameter with a pre-scour hole embedment of L/D = 5. The testing schedule saw four separate scour cases - 0.5D, 1.0D and 1.5D local scour (a conical formation around the monopile) and 1.0D global scour (a complete loss of embedment). Observations reveal a significant reduction in lateral stiffness and ultimate capacity with an increase in scour depth. In addition design codes are proven to be conservative in their recommendations for dealing with scour. Local p – y curves along the depth of the monopile are presented and exemplify the effects of overburden stresses from soil outside of the scour formation; it would appear that at depth, the effects of scour on soil strength become negligible.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors and IGS. |
Keywords: | monopile; offshore; scour; p – y curves; centrifuge |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Science Research Council EP/J013714/1; EP/K040316/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Mar 2021 09:34 |
Last Modified: | 08 Mar 2021 09:48 |
Published Version: | https://www.issmge.org/uploads/publications/51/75/... |
Status: | Published |
Publisher: | International Society for Soil Mechanics and Geotechnical Engineering |
Refereed: | Yes |
Identification Number: | 10.32075/17ECSMGE-2019-0775 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:171861 |