Analytical non-linear "m-θ" curves for monopiles in clay
Analytical non-linear "m-θ" curves for monopiles in clay
Dependable predictions of monopile foundation response to lateral loads is crucial to the efficient design of offshore wind turbine foundations. For squat monopile foundations, it is important to incorporate the distributed non-linear moment-rotation response with depth, known as “m-θ” curves, in addition to traditional “p-y” curves and lumped force-displacement curves at the pile base. Recognising the limited number of “m-θ” curves available in the literature, this paper develops new theoretical “m-θ” curves using a rational two-dimensional horizontal pile/soil “slice” model to obtain improved representations of the stress and displacement fields in the soil around the pile. Firstly, this model undergoes validation through comparisons with available linear-elastic solutions. Subsequently, it is employed in conjunction with a numerical discretisation of the pile circumference to obtain non-linear “m-θ” curves accounting for both soil yielding and slippage between pile and soil. The resulting curves are compar
Analysis, Laterally-loaded piles, m - θ curves, Monopile foundations
Bateman, Abigail H.
f325d33d-9619-4b96-b3b9-d40bbb36d669
Crispin, Jamie J.
61fc2c73-e279-4125-a241-67eff3862904
Mylonakis, George E.
8aa37314-d7c9-4962-bcc3-9a0ce1c4537b
1 May 2025
Bateman, Abigail H.
f325d33d-9619-4b96-b3b9-d40bbb36d669
Crispin, Jamie J.
61fc2c73-e279-4125-a241-67eff3862904
Mylonakis, George E.
8aa37314-d7c9-4962-bcc3-9a0ce1c4537b
Bateman, Abigail H., Crispin, Jamie J. and Mylonakis, George E.
(2025)
Analytical non-linear "m-θ" curves for monopiles in clay.
Journal of Geotechnical and Geoenvironmental Engineering, 151 (5), [04025024].
(doi:10.1061/JGGEFK.GTENG-12889).
Abstract
Dependable predictions of monopile foundation response to lateral loads is crucial to the efficient design of offshore wind turbine foundations. For squat monopile foundations, it is important to incorporate the distributed non-linear moment-rotation response with depth, known as “m-θ” curves, in addition to traditional “p-y” curves and lumped force-displacement curves at the pile base. Recognising the limited number of “m-θ” curves available in the literature, this paper develops new theoretical “m-θ” curves using a rational two-dimensional horizontal pile/soil “slice” model to obtain improved representations of the stress and displacement fields in the soil around the pile. Firstly, this model undergoes validation through comparisons with available linear-elastic solutions. Subsequently, it is employed in conjunction with a numerical discretisation of the pile circumference to obtain non-linear “m-θ” curves accounting for both soil yielding and slippage between pile and soil. The resulting curves are compar
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m-theta_paper_manuscript
- Accepted Manuscript
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bateman-et-al-2025-analytical-nonlinear-m-θ-curves-for-monopiles-in-clay
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Accepted/In Press date: 8 October 2024
e-pub ahead of print date: 27 February 2025
Published date: 1 May 2025
Keywords:
Analysis, Laterally-loaded piles, m - θ curves, Monopile foundations
Identifiers
Local EPrints ID: 495859
URI: http://eprints.soton.ac.uk/id/eprint/495859
ISSN: 1090-0241
PURE UUID: 1b0ddd85-5644-4c85-b45b-a596d2e46859
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Date deposited: 26 Nov 2024 17:39
Last modified: 30 Aug 2025 02:18
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Contributors
Author:
Abigail H. Bateman
Author:
Jamie J. Crispin
Author:
George E. Mylonakis
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