Projects per year
Abstract
Screw piles can be used as foundations for offshore energy applications, thanks to their silent mode of installation and considerable uplift capacity, although a significant upscaling of onshore dimensions is necessary. However, the crowd (vertical) force necessary to install upscaled screw piles was previously shown to be far too great for practical installation. Although guidance recommends that the pile's vertical displacement must be one helix pitch (helix height) per each pile revolution, it is shown in this paper that a lower vertical displacement per revolution can significantly reduce the necessary crowd force during installation or even generate some pull-in. In addition, it was shown that the uplift stiffness and capacity of the pile were enhanced by this installation process, at a shallow (relative) depth in sand. This paper gathers 19 centrifuge tests, with varying screw pile geometries (shaft diameter, base shape), sand relative density and advancement rates. A predictive framework for the pull-in potential of a given pile geometry was proposed to assess its ability to be installed with a reduced crowd force.
Original language | English |
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Pages (from-to) | 234-249 |
Number of pages | 16 |
Journal | Géotechnique |
Volume | 73 |
Issue number | 3 |
Early online date | 18 Oct 2021 |
DOIs | |
Publication status | Published - Mar 2023 |
Keywords
- Screw piles
- Screw anchors
- Installation Effects
- SAND
- Offshore energy
- renewable energy
- sand
- anchors & anchorages
- centrifuge modelling
- offshore engineering
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Civil and Structural Engineering
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences (miscellaneous)
Fingerprint
Dive into the research topics of 'Control of screw pile installation to optimise performance for offshore energy applications'. Together they form a unique fingerprint.Projects
- 2 Finished
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Development of Screw Anchors for Floating Marine Renewable Energy Systems Arrays Incorporating Anchor Sharing (SAFS) (Joint with University of Liege)
Brown, M. (Investigator), Cerfontaine, B. (Investigator) & Knappett, J. (Investigator)
COMMISSION OF THE EUROPEAN COMMUNITIES
1/08/17 → 31/07/19
Project: Research
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Supergen Wind Challenge 2015: Screw Piles for Wind Energy Foundation Systems (Joint with Universities of Durham and Southampton)
Brennan, A. (Investigator), Brown, M. (Investigator) & Knappett, J. (Investigator)
Engineering and Physical Sciences Research Council
26/02/16 → 25/07/19
Project: Research
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Centrifuge modelling of two-way axial cyclic response of screw piles for offshore wind
Wang, W., Brown, M., Sharif, Y., Davidson, C. & Ciantia, M., 2 Oct 2024.Research output: Contribution to conference › Paper › peer-review
Open AccessFile63 Downloads (Pure) -
Physical modelling of deep screw piles in medium-dense sands for floating wind applications
Jawid, T., Brown, M., Davidson, C., Sharif, Y., Wang, W., Shepherd, C., Buckley, R. & Whyte, S., Oct 2024, Proceedings of the 5th ECPMG 2024: 5th European Conference on Modelling in Geotechnics. International Society for Soil Mechanics and Geotechnical Engineering, 7 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Open AccessFile73 Downloads (Pure) -
3D numerical analysis of screw pile subjected to axial compressive and lateral load
Kumar, P. V. P., Patra, S., Haldar, S., Brown, M. J., Knappett, J. A. & Sharif, Y. U., 1 Jan 2023, Soil Dynamics, Earthquake and Computational Geotechnical Engineering : Proceedings of the Indian Geotechnical Conference 2021 Volume 5. Muthukkumaran, K., Ayothiraman, R. & Kolathayar, S. (eds.). Singapore: Springer , Vol. 5. p. 75-85 11 p. (Lecture Notes in Civil Engineering; vol. 300).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Open AccessFile109 Downloads (Pure)
Student theses
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Screw piles as offshore foundations : Numerical and physical modelling
Al-Baghdadi, T. (Author), Brown, M. (Supervisor) & Knappett, J. (Supervisor), 2018Student thesis: Doctoral Thesis › Doctor of Philosophy
File
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External PhD examiner University of Western Australia, Pierre-Yves Guy Duverneuil: The response of helical anchors under offshore environmental loading
Brown, M. (Examiner)
29 May 2024Activity: Examination types › Examination
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Public Engagement Lecture: Geotechnical modelling for the advancement of offshore renewable energy application
Brown, M. (Speaker)
6 Jun 2023Activity: Talk or presentation types › Invited talk
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Public Engagement: Tayport Episcopalian Church Talk, Sea Sunday: Local Offshore Renewable Energy Investigation and Development
Brown, M. (Speaker) & Ciantia, M. (Speaker)
9 Jul 2023Activity: Talk or presentation types › Invited talk
Prizes
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Institution of Civil Engineers Geotechnical Research Medal 2023
Davidson, C. (Recipient), Brown, M. (Recipient), Cerfontaine, B. (Recipient), Knappett, J. (Recipient), Brennan, A. (Recipient), Al-Baghdadi, T. (Recipient), Augarde, C. (Recipient), Coombs, W. M. (Recipient), Wang, L. (Recipient), Blake, A. (Recipient), Richards, D. (Recipient) & Ball, J. D. (Recipient), 13 Oct 2023
Prize: Prize (including medals and awards)
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Institution of Civil Engineers Telford Gold Medal 2024
Cerfontaine, B. (Recipient), Brown, M. (Recipient), Knappett, J. (Recipient), Davidson, C. (Recipient), Sharif, Y. (Recipient), Huisman, M. (Recipient), Ottolini, M. (Recipient) & Ball, J. D. (Recipient), 11 Oct 2024
Prize: Prize (including medals and awards)
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Scottish Knowledge Exchange Awards 2025 finalist
Brown, M. (Recipient), Davidson, C. (Recipient), Sharif, Y. (Recipient), Robinson, S. (Recipient), Cerfontaine, B. (Recipient), Ciantia, M. (Recipient), Ottolini, M. (Recipient), Sonnema, W. (Recipient) & Huisman, M. (Recipient), 12 Feb 2025
Prize: National/international honour