Field investigation to evaluate the uplift capacity and installation performance of screw piles in sand

TY - GEN

T1 - Field investigation to evaluate the uplift capacity and installation performance of screw piles in sand

AU - Bittar, Eduardo

AU - Lehane, Barry

AU - Richards, David

AU - Blake, Anthony

AU - White, David

AU - Brown, Michael

AU - Davidson, Craig

N1 - Funding Information: The authors acknowledge the support of the Engineering and Physical Sciences Research Council (EPSRC), which funded this research through Grant No. EP/N006054/1 Supergen Wind Hub Grand Challenges Project: Screw piles for wind energy foundation systems. The first author acknowledges the support of the Australian Postgraduate Award at The University of Western Australia.

PY - 2022/5/5

Y1 - 2022/5/5

N2 - This paper presents results from an ongoing investigation examining the installation requirements (thrust and torque) for screw piles in sand as well as the static uplift capacity of these piles. The tests described in this paper here were conducted on field scale piles in medium dense aeolian siliceous sand at the University of Western Australia’s Shenton Park Field Station. The thrust and torque were measured during installation to investigate the interaction between thrust, torque, and the advancement ratio of the pile. Static tension tests were undertaken to examine the relationship between the uplift capacity and installation torque and to assess the suitability of existing prediction methods. The test results and observations contribute to the assessment of the practical applicability of screw pile technology at the scale required for offshore wind applications, where limitations on the available installation thrust and torque exist.

AB - This paper presents results from an ongoing investigation examining the installation requirements (thrust and torque) for screw piles in sand as well as the static uplift capacity of these piles. The tests described in this paper here were conducted on field scale piles in medium dense aeolian siliceous sand at the University of Western Australia’s Shenton Park Field Station. The thrust and torque were measured during installation to investigate the interaction between thrust, torque, and the advancement ratio of the pile. Static tension tests were undertaken to examine the relationship between the uplift capacity and installation torque and to assess the suitability of existing prediction methods. The test results and observations contribute to the assessment of the practical applicability of screw pile technology at the scale required for offshore wind applications, where limitations on the available installation thrust and torque exist.

KW - screw pile

KW - Offshore wind

KW - Field monitoring

UR - https://portalapp.icmsaust.eventsair.com/VirtualAttendeePortal/icsmge-2021-international-conference-on-soils-mechanics-and-geotechnical-engineering/icsmgeplatform/login

M3 - Conference contribution

VL - 2

SP - 3195

EP - 3200

BT - Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering

PB - Australian Geomechanics Society

CY - Sydney

T2 - 20th International Conference on Soil Mechanics and Geotechnical Engineering

Y2 - 1 May 2022 through 5 May 2022

ER -