Assessing single-helix screw pile geometry on offshore installation and axial capacity-Reference-Cited by-同舟云学术

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

Published:2021-10 Issue:5 Volume:174 Page:512-529
ISSN:1353-2618
Container-title:Proceedings of the Institution of Civil Engineers - Geotechnical Engineering
language:en
Short-container-title:Proceedings of the Institution of Civil Engineers - Geotechnical Engineering

Author:

Sharif Yaseen Umar¹^ORCID,Brown Michael John²^ORCID,Ciantia Matteo Oryem³^ORCID,Cerfontaine Benjamin⁴^ORCID,Davidson Craig⁵^ORCID,Knappett Jonathan Adam²^ORCID,Ball Jonathan David⁶

Affiliation:

1. PhD Student, School of Science and Engineering, University of Dundee, Dundee, UK (corresponding author: )

2. Professor, School of Science and Engineering, University of Dundee, Dundee, UK

3. Senior Lecturer, School of Science and Engineering, University of Dundee, Dundee, UK

4. Lecturer, Engineering and Physical Sciences, University of Southampton, Southampton, UK

5. Research Associate, School of Science and Engineering, University of Dundee, Dundee, UK

6. Chief Geotechnical Engineer, Roger Bullivant Ltd, Burton upon Trent, UK

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.

Publisher

Thomas Telford Ltd.

Subject

Earth and Planetary Sciences (miscellaneous),Geotechnical Engineering and Engineering Geology

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jgeen.21.00104

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