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Physical modelling of screw piles for offshore wind energy foundations

Physical modelling of screw piles for offshore wind energy foundations
Physical modelling of screw piles for offshore wind energy foundations
Using existing design methodologies, a series of screw piles were designed to meet the loads required for an upper-bound design scenario of a steel jacket supported offshore wind turbine in deep water. The installation torque and force were measured from centrifuge tests of 1/80 th scale models of the screw piles in very dense sand. Results indicate that the installation requirements are significant and may be beyond the capabilities of existing conventional installation equipment. Optimisation of the screw pile design was successful in reducing the installation force and torque by 34 and 17% respectively over the non-optimised design variant. Accurate prediction of the installation torque is critical and can be achieved using correlations with cone penetration test data.
Screw piles, Torque, Centrifuge model
31-38
Brown, Michael
9e81d958-6d46-4ce5-999d-cbb98ac3d067
Davidson, Craig
972704f2-5a32-4469-ad4f-358c60ef8de2
Brennan, Andrew
ed8e82a5-2c8d-4826-851f-d31cd1c87eb2
Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Sharif, Yaseen
f8ed0802-9644-479f-b288-77dec7624aa8
Brown, Michael
9e81d958-6d46-4ce5-999d-cbb98ac3d067
Davidson, Craig
972704f2-5a32-4469-ad4f-358c60ef8de2
Brennan, Andrew
ed8e82a5-2c8d-4826-851f-d31cd1c87eb2
Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Sharif, Yaseen
f8ed0802-9644-479f-b288-77dec7624aa8

Brown, Michael, Davidson, Craig, Brennan, Andrew, Knappett, Jonathan, Cerfontaine, Benjamin and Sharif, Yaseen (2019) Physical modelling of screw piles for offshore wind energy foundations. In 1st International Symposium on Screw Piles for Energy Applications. pp. 31-38 .

Record type: Conference or Workshop Item (Paper)

Abstract

Using existing design methodologies, a series of screw piles were designed to meet the loads required for an upper-bound design scenario of a steel jacket supported offshore wind turbine in deep water. The installation torque and force were measured from centrifuge tests of 1/80 th scale models of the screw piles in very dense sand. Results indicate that the installation requirements are significant and may be beyond the capabilities of existing conventional installation equipment. Optimisation of the screw pile design was successful in reducing the installation force and torque by 34 and 17% respectively over the non-optimised design variant. Accurate prediction of the installation torque is critical and can be achieved using correlations with cone penetration test data.

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More information

Published date: 27 May 2019
Additional Information: The authors would like to acknowledge the support of EPSRC (Grant no. EP/N006054/1: Supergen Wind Hub Grand Challenges Project: Screw piles for wind energy foundations) and the Iraqi Ministry of higher Education of Scientific Research (MOHESR). This project has also received support from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 753156. Elements of this work were undertaken using facilities developed as part of the ERDF-funded Scottish Marine & Renewables Test Centre (SMART) at the University of Dundee
Keywords: Screw piles, Torque, Centrifuge model

Identifiers

Local EPrints ID: 444212
URI: http://eprints.soton.ac.uk/id/eprint/444212
PURE UUID: 47a82e46-b51a-4a04-b41f-e7018bef1f05
ORCID for Benjamin Cerfontaine: ORCID iD orcid.org/0000-0002-4833-9412

Catalogue record

Date deposited: 01 Oct 2020 16:34
Last modified: 02 Oct 2020 01:53

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Contributors

Author: Michael Brown
Author: Craig Davidson
Author: Andrew Brennan
Author: Jonathan Knappett
Author: Yaseen Sharif

University divisions

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