DEM simulation of cyclic tests on an offshore screw pile for floating wind

Wei Wang; Michael Brown; Matteo Ciantia; Yaseen Sharif

doi:10.20933/100001231

DEM simulation of cyclic tests on an offshore screw pile for floating wind

Wei Wang (Lead / Corresponding author), Michael Brown, Matteo Ciantia, Yaseen Sharif

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

321 Downloads (Pure)

Abstract

Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.

Original language	English
Title of host publication	Proceedings of the 18th UK Travelling Workshop
Subtitle of host publication	GeoMechanics: from Micro to Macro (GM3), Dundee, 2021
Editors	Matteo Ciantia, Marco Previtali, Malcolm Bolton
Place of Publication	Dundee
Publisher	University of Dundee
Pages	29-32
Number of pages	4
DOIs	https://doi.org/10.20933/100001231
Publication status	Published - 16 Dec 2021

Publication series

Name	GM3 Travelling Workshop Proceedings
Number	1

Keywords

screw pile
discrete element method
cyclic performance

Access to Document

10.20933/100001231

DEM simulation of cyclic tests on an offshore screw pile for floating windFinal published version, 287 KB

1 Finished

Supergen Wind Challenge 2015: Screw Piles for Wind Energy Foundation Systems (Joint with Universities of Durham and Southampton)
Brennan, A. (Investigator), Brown, M. (Investigator) & Knappett, J. (Investigator)
Engineering and Physical Sciences Research Council
26/02/16 → 25/07/19
Project: Research

4 Article
3 Paper
2 Conference contribution
1 Book
More
- 1 Abstract

Centrifuge Modeling of the Installation Advancement Ratio Effect on the Cyclic Response of a Single-Helix Screw Pile for Floating Offshore Wind
Wang, W. (Lead / Corresponding author), Brown, M., Sharif, Y. U., Davidson, C. & Ciantia, M. O., 1 Jan 2025, In: Journal of Geotechnical and Geoenvironmental Engineering. 151, 1, 18 p., 04024133.
Research output: Contribution to journal › Article › peer-review

Open Access
File
118 Downloads (Pure)
The effect of installation advancement ratio on interaction between helices of screw piles for offshore renewable energy
Wang, W. (Lead / Corresponding author), Brown, M., Ciantia, M., Previtali, M., Sharif, Y. & Davidson, C., 15 Jan 2025, In: Ocean Engineering. 316, p. 1-17 17 p., 120000.
Research output: Contribution to journal › Article › peer-review

Open Access
File
33 Downloads (Pure)
Centrifuge modelling of two-way axial cyclic response of screw piles for offshore wind
Wang, W., Brown, M., Sharif, Y., Davidson, C. & Ciantia, M., 2 Oct 2024.
Research output: Contribution to conference › Paper › peer-review

Open Access
File
85 Downloads (Pure)

Cyclic performance of screw piles for offshore floating wind
Wang, W. (Author), Brown, M. (Supervisor) & Ciantia, M. (Supervisor), 2025
Student thesis: Doctoral Thesis › Doctor of Philosophy

4 Invited talk
1 Examination

External PhD examiner University of Western Australia, Pierre-Yves Guy Duverneuil: The response of helical anchors under offshore environmental loading
Brown, M. (Examiner)
29 May 2024
Activity: Examination types › Examination
Public Engagement Lecture: Geotechnical modelling for the advancement of offshore renewable energy application
Brown, M. (Speaker)
6 Jun 2023
Activity: Talk or presentation types › Invited talk
Invited Speaker British Geotechnical Association Annual Conference Modelling of Large Helical Piles for offshore renewable applications
Brown, M. (Speaker)
22 Jun 2022
Activity: Talk or presentation types › Invited talk

How we stop floating wind turbines the size of skyscrapers from drifting away
Brown, M. & Knappett, J.
23/05/23
1 Media contribution
Press/Media: Research

Institution of Civil Engineers Geotechnical Research Medal 2023
Davidson, C. (Recipient), Brown, M. (Recipient), Cerfontaine, B. (Recipient), Knappett, J. (Recipient), Brennan, A. (Recipient), Al-Baghdadi, T. (Recipient), Augarde, C. (Recipient), Coombs, W. M. (Recipient), Wang, L. (Recipient), Blake, A. (Recipient), Richards, D. (Recipient) & Ball, J. D. (Recipient), 13 Oct 2023
Prize: Prize (including medals and awards)

Cite this

Wang, W., Brown, M., Ciantia, M., & Sharif, Y. (2021). DEM simulation of cyclic tests on an offshore screw pile for floating wind. In M. Ciantia, M. Previtali, & M. Bolton (Eds.), Proceedings of the 18th UK Travelling Workshop: GeoMechanics: from Micro to Macro (GM3), Dundee, 2021 (pp. 29-32). (GM3 Travelling Workshop Proceedings; No. 1). University of Dundee. https://doi.org/10.20933/100001231

Wang, Wei ; Brown, Michael ; Ciantia, Matteo et al. / DEM simulation of cyclic tests on an offshore screw pile for floating wind. Proceedings of the 18th UK Travelling Workshop: GeoMechanics: from Micro to Macro (GM3), Dundee, 2021. editor / Matteo Ciantia ; Marco Previtali ; Malcolm Bolton. Dundee : University of Dundee, 2021. pp. 29-32 (GM3 Travelling Workshop Proceedings; 1).

@inproceedings{80d474e0c58540b2bea16fa033681cc1,

title = "DEM simulation of cyclic tests on an offshore screw pile for floating wind",

abstract = "Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.",

keywords = "screw pile, discrete element method, cyclic performance",

author = "Wei Wang and Michael Brown and Matteo Ciantia and Yaseen Sharif",

year = "2021",

month = dec,

day = "16",

doi = "10.20933/100001231",

language = "English",

series = "GM3 Travelling Workshop Proceedings",

publisher = "University of Dundee",

number = "1",

pages = "29--32",

editor = "Matteo Ciantia and Marco Previtali and Malcolm Bolton",

booktitle = "Proceedings of the 18th UK Travelling Workshop",

}

Wang, W , Brown, M , Ciantia, M & Sharif, Y 2021, DEM simulation of cyclic tests on an offshore screw pile for floating wind. in M Ciantia, M Previtali & M Bolton (eds), Proceedings of the 18th UK Travelling Workshop: GeoMechanics: from Micro to Macro (GM3), Dundee, 2021. GM3 Travelling Workshop Proceedings, no. 1, University of Dundee, Dundee, pp. 29-32. https://doi.org/10.20933/100001231

DEM simulation of cyclic tests on an offshore screw pile for floating wind. / Wang, Wei (Lead / Corresponding author); Brown, Michael ; Ciantia, Matteo et al.
Proceedings of the 18th UK Travelling Workshop: GeoMechanics: from Micro to Macro (GM3), Dundee, 2021. ed. / Matteo Ciantia; Marco Previtali; Malcolm Bolton. Dundee: University of Dundee, 2021. p. 29-32 (GM3 Travelling Workshop Proceedings; No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - DEM simulation of cyclic tests on an offshore screw pile for floating wind

AU - Wang, Wei

AU - Brown, Michael

AU - Ciantia, Matteo

AU - Sharif, Yaseen

PY - 2021/12/16

Y1 - 2021/12/16

N2 - Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.

AB - Screw piles need to be upscaled for offshore use e.g. being an alternative foundation and anchor form for offshore floating wind turbines, although the high demand of vertical installation forces could prevent its application if conventional pitch-matched installation is used. Recent studies, using numerical and centrifuge physical tests, indicated that the vertical installation force can be reduced by adopting over-flighting which also improved axial uplift capacity of the screw pile. The current study extends the scope to axial cyclic performance with respect to the installation approach. Using quasi-static discrete element method (DEM) simulation it was found that the over-flighted screw pile showed a lower displacement accumulation rate, compared to a pitch-matched installed pile, in terms of load-controlled cyclic tests. Sensitivity analysis of the setup of the cyclic loading servo shows the maximum velocity during the tests should be limited to avoid significant exaggeration of the pile displacement accumulation but this may lead to very high run durations.

KW - screw pile

KW - discrete element method

KW - cyclic performance

U2 - 10.20933/100001231

DO - 10.20933/100001231

M3 - Conference contribution

T3 - GM3 Travelling Workshop Proceedings

SP - 29

EP - 32

BT - Proceedings of the 18th UK Travelling Workshop

A2 - Ciantia, Matteo

A2 - Previtali, Marco

A2 - Bolton, Malcolm

PB - University of Dundee

CY - Dundee

ER -

Wang W , Brown M , Ciantia M , Sharif Y. DEM simulation of cyclic tests on an offshore screw pile for floating wind. In Ciantia M, Previtali M, Bolton M, editors, Proceedings of the 18th UK Travelling Workshop: GeoMechanics: from Micro to Macro (GM3), Dundee, 2021. Dundee: University of Dundee. 2021. p. 29-32. (GM3 Travelling Workshop Proceedings; 1). doi: 10.20933/100001231

DEM simulation of cyclic tests on an offshore screw pile for floating wind

Abstract

Publication series

Keywords

Access to Document

Fingerprint

Projects

Research output

Student theses

Activities

Press/Media

Prizes

Cite this