Centrifuge modelling of screw piles for offshore wind energy foundations

TY - GEN

T1 - Centrifuge modelling of screw piles for offshore wind energy foundations

AU - Davidson, Craig

AU - Al-Baghdadi, Therar

AU - Brown, Michael

AU - Knappett, Jonathan

AU - Brennan, Andrew

AU - Augarde, Charles E.

AU - Wang, Lei

AU - Coombs, William M.

AU - Richards, David

AU - Blake, Anthony

PY - 2018/10/24

Y1 - 2018/10/24

N2 - 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.

AB - 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.

KW - Screw piles

KW - offshore wind energy

UR - https://www.crcpress.com/Physical-Modelling-in-Geotechnics-Proceedings-of-the-9th-International/McNamara-Divall-Goodey-Taylor-Stallebrass-Panchal/p/book/9781138559752

U2 - 10.1201/9780429438646

DO - 10.1201/9780429438646

M3 - Conference contribution

SN - 9781138344198

SP - 695

EP - 700

BT - Physical Modelling in Geotechnics

A2 - McNamara, Andrew

A2 - Divall, Sam

A2 - Goodey, Richard

PB - Taylor & Francis

T2 - 9th International Conference on Physical Modelling in Geoetchnics

Y2 - 17 July 2018 through 20 July 2018

ER -