Assessing single helix screw pile geometry on offshore installation and axial capacity

Yaseen Sharif; Michael Brown; Matteo Ciantia; Benjamin Cerfontaine; Craig Davidson; Jonathan Knappett; Jonathan David Ball

doi:10.1680/jgeen.21.00104

Assessing single helix screw pile geometry on offshore installation and axial capacity

Yaseen Sharif, Michael Brown, Matteo Ciantia, Benjamin Cerfontaine, Craig Davidson, Jonathan Knappett, Jonathan David Ball

Civil Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

293 Downloads (Pure)

Abstract

Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.

Original language	English
Pages (from-to)	512-529
Number of pages	18
Journal	Proceedings of the Institution of Civil Engineers: Geotechnical Engineering
Volume	174
Issue number	5
Early online date	24 Aug 2021
DOIs	https://doi.org/10.1680/jgeen.21.00104
Publication status	Published - 4 Oct 2021

Keywords

geotechnical engineering
computational mechanics
piles & piling

ASJC Scopus subject areas

Civil and Structural Engineering
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1680/jgeen.21.00104

Author Accepted ManuscriptAccepted author manuscript, 1.73 MBLicence: CC BY

Cite this

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title = "Assessing single helix screw pile geometry on offshore installation and axial capacity",

abstract = "Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.",

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author = "Yaseen Sharif and Michael Brown and Matteo Ciantia and Benjamin Cerfontaine and Craig Davidson and Jonathan Knappett and Ball, {Jonathan David}",

note = "This research is a part of an EPSRC NPIF funded studentship with Roger Bullivant Limited. The 4th author was supported by the European Union{\textquoteright}s Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement No 753156. The authors would also like to acknowledge the further support of EPSRC (Grant no. EP/N006054/1: Supergen Wind Hub: Grand Challenges Project: Screw piles for wind energy foundations).",

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AU - Sharif, Yaseen

AU - Brown, Michael

AU - Ciantia, Matteo

AU - Cerfontaine, Benjamin

AU - Davidson, Craig

AU - Knappett, Jonathan

AU - Ball, Jonathan David

N1 - This research is a part of an EPSRC NPIF funded studentship with Roger Bullivant Limited. The 4th author was supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 753156. The authors would also like to acknowledge the further support of EPSRC (Grant no. EP/N006054/1: Supergen Wind Hub: Grand Challenges Project: Screw piles for wind energy foundations).

PY - 2021/10/4

Y1 - 2021/10/4

N2 - Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.

AB - Due to their low-noise installation and relatively large axial capacity, screw piles have been proposed as an alternative foundation solution in dense sand for offshore renewable energy applications in deeper water. For this to occur, significant upscaling of onshore dimensions is required. Furthermore, the effects of certain geometric features on installation requirements are still not well understood. In this work, using the three-dimensional discrete-element method, the effects of base geometry, shaft diameter and helix pitch were investigated by simulating the full installation process prior to conducting axial compression and tension tests. The results of the investigation showed it is possible to optimise the geometry of the screw pile to reduce installation requirements, in terms of both vertical installation force (up to 61%) and installation torque (up to 39%), without reducing the axial capacity of the pile significantly.

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JO - Proceedings of the Institution of Civil Engineers: Geotechnical Engineering

JF - Proceedings of the Institution of Civil Engineers: Geotechnical Engineering

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Assessing single helix screw pile geometry on offshore installation and axial capacity

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

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Development of Screw Anchors for Floating Marine Renewable Energy Systems Arrays Incorporating Anchor Sharing (SAFS) (Joint with University of Liege)

Supergen Wind Challenge 2015: Screw Piles for Wind Energy Foundation Systems (Joint with Universities of Durham and Southampton)

Centrifuge Modeling of the Installation Advancement Ratio Effect on the Cyclic Response of a Single-Helix Screw Pile for Floating Offshore Wind

Centrifuge modelling of two-way axial cyclic response of screw piles for offshore wind

Physical modelling of deep screw piles in medium-dense sands for floating wind applications

Screw piles as offshore foundations : Numerical and physical modelling

The Effects of Rotary Installation on the Axial Capacity of Displacement Piles in Sand

External PhD examiner University of Western Australia, Pierre-Yves Guy Duverneuil: The response of helical anchors under offshore environmental loading

Public engagement talk, Cafe Scientifique: Developing Silent Foundations & Anchors for Offshore Renewable Applications

Public Engagement Lecture: Geotechnical modelling for the advancement of offshore renewable energy application

Centrifuge dataset for screw pile installation and uplift

Dundee University engineers hope to silence offshore construction

Heerema Developing Silent Foundations

Heerema developing Silent Foundation Concepts Technology in coordination with the University of Dundee

Institution of Civil Engineers Telford Gold Medal 2024

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Assessing single helix screw pile geometry on offshore installation and axial capacity

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ASJC Scopus subject areas

UN SDGs

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