Projects per year
Abstract
Existing guidance on the installation of screw piles suggest that they should be installed in a pitch-matched manner to avoid disturbance to the soil that may have a detrimental effect on the in-service performance of the pile. Recent insights from centrifuge modelling have shown that installing screw piles in this way requires large vertical compressive (or crowd) forces, which is inconsistent with the common assumption that screw piles pull themselves into the ground requiring minimal vertical compressive force. In this paper, through the use of the discrete element method (DEM), the effects of advancement ratio, i.e., the ratio between the vertical displacement per rotation to the geometric pitch of the helix of the screw pile helix, on the installation resistance and in-service capacity of a screw pile is investigated. The findings are further used to assess the applicability of empirical torque capacity correlation factors for large diameter screw piles. The results of the investigation show that it is possible to reduce the required vertical compressive installation force by 96% by reducing the advancement ratio and that although over-flighting a screw pile can decrease the subsequent compressive capacity, it appears to increase the tensile capacity significantly.
Original language | English |
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Pages (from-to) | 1334-1350 |
Number of pages | 17 |
Journal | Canadian Geotechnical Journal |
Volume | 58 |
Issue number | 9 |
Early online date | 27 Oct 2020 |
DOIs | |
Publication status | Published - Sep 2021 |
Event | 1st International Symposium on Screw Piles for Energy Applications - University of Dundee, Dundee, United Kingdom Duration: 27 May 2019 → 28 May 2019 |
Keywords
- Installation Effects
- Screw Piles
- Discrete element method
- Silent Piling
- Installation effects
- Discrete element method (DEM)
- Screw piles
Fingerprint
Dive into the research topics of 'Effects of screw pile installation on installation requirements and in-service performance using the Discrete Element Method'. Together they form a unique fingerprint.Projects
- 2 Finished
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Development of Screw Anchors for Floating Marine Renewable Energy Systems Arrays Incorporating Anchor Sharing (SAFS) (Joint with University of Liege)
Brown, M., Cerfontaine, B. & Knappett, J.
COMMISSION OF THE EUROPEAN COMMUNITIES
1/08/17 → 31/07/19
Project: Research
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Optimised screw pile design for offshore jacket foundations in medium-dense sand
Cerfontaine, B., Brown, M., Davidson, C., Sharif, Y., Huisman, M. & Ottolini, M., Jun 2022, In: Geotechnique Letters. 12, 2, p. 1-6 6 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile42 Downloads (Pure) -
Physical modelling to demonstrate the feasibility of screw piles for offshore jacket supported wind energy structures
Davidson, C., Brown, M., Cerfontaine, B., Knappett, J., Brennan, A., Al-Baghdadi, T., Augarde, C., Coombs, W. M., Wang, L., Blake, A., Richards, D. & Ball, J. D., Feb 2022, In: Geotechnique. 72, 2, p. 108-126 19 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile9 Citations (Scopus)156 Downloads (Pure) -
3D numerical analysis of screw pile subjected to axial compressive and lateral load
Kumar, P. V. P., Patra, S., Haldar, S., Brown, M. J., Knappett, J. A. & Sharif, Y. U., 16 Dec 2021, Proceedings of the Indian Geotechnical Conference 2021. Springer , 12 p. (Lecture Notes in Civil Engineering).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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Invited Speaker, SUT OSIG One day seminar: Development and investigation of silent foundations for offshore renewable energy
Michael Brown (Speaker)
16 Sep 2021Activity: Talk or presentation types › Invited talk
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Invited Speaker, NGI, Norway: Using DEM to Investigate the Applicability of Screw Piles as an Alternative Solution for Offshore Wind Turbine Foundations
Michael Brown (Speaker) & Yaseen Sharif (Speaker)
25 Nov 2020Activity: Talk or presentation types › Invited talk
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Keynote lecture First International Workshop on Future Application of Screw Piles (IWFASP 2019) At: IIT Bhubaneshwar, India
Michael Brown (Keynote speaker)
7 Dec 2019Activity: Talk or presentation types › Keynote
File
Press / Media
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Dundee University engineers hope to silence offshore construction
28/01/21
1 item of Media coverage
Press/Media: Research
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Heerema developing Silent Foundation Concepts Technology in coordination with the University of Dundee
30/06/20
1 item of Media coverage
Press/Media: Research