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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Field investigation to evaluate the uplift capacity and installation performance of screw piles in sand
Bittar, E., Lehane, B., Richards, D., Blake, A., White, D., Brown, M. & Davidson, C., 5 May 2022, Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering. Sydney: Australian Geomechanics Society, Vol. 2. p. 3195-3200 6 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Open AccessFile -
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 AccessFile103 Downloads (Pure) -
Overflighting screw piles in sand, a detrimental effect?
Cerfontaine, B., Brown, M., Knappett, J., Sharif, Y. & Davidson, C., 5 May 2022, p. 1081-1086.Research output: Contribution to conference › Paper › peer-review
Open AccessFile
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Keynote presentation: GEOLAB’s Second Next Generation Training Workshop
Michael Brown (Speaker)
18 Nov 2022Activity: Talk or presentation types › Invited talk
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Invited Speaker British Geotechnical Association Annual Conference Modelling of Large Helical Piles for offshore renewable applications
Michael Brown (Speaker)
22 Jun 2022Activity: Talk or presentation types › Invited talk
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Invited speaker, NGI, Norway: Virtual laboratory testing and its applications within offshore wind industry
Michael Brown (Speaker)
22 Sep 2022 → 23 Sep 2022Activity: Talk or presentation types › Invited talk
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