Projects per year
Abstract
The offshore wind energy sector faces new challenges as it moves into deeper water deployment. To meet these challenges new and efficient foundation solutions are required. One potential solution is to upscale onshore screw piles but they require verification of performance for new geometries and demanding loading regimes. This paper presents a 3D Finite Element Analysis (3D-FEA) investigation of screw pile behaviour when subjected to combined vertical and lateral loading in sand. The investigation varied screw pile length (L) and helical plate diameter (Dh) on piles with fixed core diameter (Dp) whilst subjecting the piles to combined axial and lateral loading. The results were compared to straight shafted piles with the same core diameter. The results of the analysis show that vertical compression loads increase the lateral capacity of screw piles whereas vertical uplift loads marginally reduce the lateral capacity. The down side of this enhanced lateral capacity is that the screw piles experience higher bending moments. This suggest that when using screw piles for offshore foundation applications structures should be designed to maintain axial compressive loads on the piles and that induced bending moments need to be adequately assessed when deciding on appropriate structural sections.
Original language | English |
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Pages (from-to) | 259-272 |
Number of pages | 14 |
Journal | Proceedings of the Institution of Civil Engineers: Geotechnical Engineering |
Volume | 170 |
Issue number | 3 |
Early online date | 17 Feb 2017 |
DOIs | |
Publication status | Published - Jun 2017 |
Keywords
- Geotechnical engineering
- Offshore engineering
- Piles & piling
Fingerprint Dive into the research topics of 'Effects of vertical loading on lateral screw pile performance'. Together they form a unique fingerprint.
Projects
- 1 Finished
Research output
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Editorial: embedded foundations under complex loading
Brown, M. J., Diambra, A., Rouainia, M. & White, D., Aug 2020, In: Géotechnique. 70, 8, p. 655-656 2 p.Research output: Contribution to journal › Editorial
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On Lagrangian mechanics and the implicit material point method for large deformation elasto-plasticity
Coombs, W. M., Augarde, C., Brown, M., Brennan, A., Charlton, T., Knappett, J., Motlagh, Y. & Wang, L., 1 Jan 2020, In: Computer Methods in Applied Mechanics and Engineering. 358, p. 1-32 32 p., 112622.Research output: Contribution to journal › Article › peer-review
Open AccessFile6 Citations (Scopus)117 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., 23 Sep 2020, In: Geotechnique. 0, p. 1-19 19 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile
Activities
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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 -
ICE Northern Geotechnical Group: Annual seminar, Piling
Michael Brown (Invited speaker)
1 Nov 2017Activity: Talk or presentation types › Invited talk
Press / Media
Prizes
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Winner ICPE Best presentation award
Brown, Michael (Recipient), Sep 2018
Prize: Prize (including medals and awards)