Assessing single-helix screw pile geometry on offshore installation and axial capacity
Assessing single-helix screw pile geometry on offshore installation and axial capacity
Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.
computational mechanics, geotechnical engineering, piles & piling
512-529
Sharif, Yaseen Umar
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Brown, Michael John
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Ciantia, Matteo Oryem
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Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Davidson, Craig
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Knappett, Jonathan Adam
cda30027-553d-4310-8a05-e48d8989a545
Ball, Jonathan David
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1 October 2021
Sharif, Yaseen Umar
d1b8387c-6287-4ceb-8134-9037b3a8df8d
Brown, Michael John
4aec31d6-db86-4d2d-98b4-4c52bc30e16d
Ciantia, Matteo Oryem
475465e6-bb34-448e-8ea9-14459a8c5f27
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Davidson, Craig
972704f2-5a32-4469-ad4f-358c60ef8de2
Knappett, Jonathan Adam
cda30027-553d-4310-8a05-e48d8989a545
Ball, Jonathan David
1baa9903-fa72-4703-ac2c-cdca5498bf8b
Sharif, Yaseen Umar, Brown, Michael John, Ciantia, Matteo Oryem, Cerfontaine, Benjamin, Davidson, Craig, Knappett, Jonathan Adam and Ball, Jonathan David
(2021)
Assessing single-helix screw pile geometry on offshore installation and axial capacity.
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 174 (5), .
(doi:10.1680/jgeen.21.00104).
Abstract
Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.
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Published date: 1 October 2021
Additional Information:
Funding Information:
This research is part of an EPSRC-NPIF-funded studentship with Roger Bullivant Limited. Benjamin Cerfontaine was supported by the European Union's Horizon 2020 research and innovation programme under a Marie Skłodowska-Curie grant agreement (no 753156). The authors would also like to acknowledge the further support of the EPSRC (grant EP/N006054/1: Supergen Wind Hub: Grand Challenges Project: Screw piles for wind energy foundations).
Publisher Copyright:
© 2021 ICE Publishing: All rights reserved.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Keywords:
computational mechanics, geotechnical engineering, piles & piling
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Local EPrints ID: 453633
URI: http://eprints.soton.ac.uk/id/eprint/453633
ISSN: 1353-2618
PURE UUID: 3ce74952-fda4-4f13-9069-0a8244df731a
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Date deposited: 20 Jan 2022 17:40
Last modified: 17 Mar 2024 06:59
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Author:
Yaseen Umar Sharif
Author:
Michael John Brown
Author:
Matteo Oryem Ciantia
Author:
Craig Davidson
Author:
Jonathan Adam Knappett
Author:
Jonathan David Ball
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