Centrifuge modelling of screw piles for offshore wind energy foundations

Davidson, C.; Al-Baghdadi, T.; Brown, M.J.; Knappett, J.; Brennan, A.; Augarde, C.E.; Wang, L.; Coombs, W.M.; Richards, D.; Blake, A.; Ball, J.

Centrifuge modelling of screw piles for offshore wind energy foundations

Davidson, C.; Al-Baghdadi, T.; Brown, M.J.; Knappett, J.; Brennan, A.; Augarde, C.E.; Wang, L.; Coombs, W.M.; Richards, D.; Blake, A.; Ball, J.

Authors

C. Davidson

T. Al-Baghdadi

M.J. Brown

J. Knappett

A. Brennan

Professor Charles Augarde charles.augarde@durham.ac.uk
Head Of Department

L. Wang

Professor William Coombs w.m.coombs@durham.ac.uk
Professor

D. Richards

A. Blake

J. Ball

Contributors

Andrew McNamara
Editor

Sam Divall
Editor

Richard Goodey
Editor

Neil Taylor
Editor

Sarah Stallebrass
Editor

Jignasha Panchal
Editor

Abstract

Screw piles (helical piles) can provide a viable, cost-effective and low-noise installation alternative to increasing the size of existing foundation solutions (e.g. monopiles) to meet the demand for the advancement of offshore wind energy into deeper water. Significant upscaling of widely used onshore screw pile geometries will be required to meet the loading conditions of a jacket supported offshore wind turbine. This increase in size will lead to greater installation force and torque. This paper presents preliminary results from centrifuge tests investigating the requirements to install screw piles designed for an offshore wind energy application using specially developed equipment. Results indicate that the equipment is suitable to investigate these screw pile requirements and that significant force is required for such upscaled screw piles, with 19 MN vertical force and 7 MNm torque for the standard design. Optimisation of the screw pile geometry, reduced these forces by 29 and 11% for the vertical and rotational forces respectively.

Citation

Davidson, C., Al-Baghdadi, T., Brown, M., Knappett, J., Brennan, A., Augarde, C., …Ball, J. (2018). Centrifuge modelling of screw piles for offshore wind energy foundations. In A. McNamara, S. Divall, R. Goodey, N. Taylor, S. Stallebrass, & J. Panchal (Eds.), Physical modelling in geotechnics : proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. Volume 1 (695-700)

Conference Name	9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018)
Conference Location	London, UK
Start Date	Jul 17, 2018
End Date	Jul 20, 2018
Online Publication Date	Jul 3, 2018
Publication Date	Jul 3, 2018
Deposit Date	Jul 25, 2018
Publicly Available Date	Jul 3, 2019
Pages	695-700
Book Title	Physical modelling in geotechnics : proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. Volume 1.
ISBN	9781138344198
Public URL	https://durham-repository.worktribe.com/output/1146288
Publisher URL	http://www.routledge.com/9781138344198

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Copyright Statement
This is an Accepted Manuscript of a book chapter published by Routledge in Physical modelling in geotechnics: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. Volume 1 on 03 July 2018, available online: http://www.routledge.com/9781138344198