Analytical base shear reaction curves for predicting monopile response in undrained clay
Analytical base shear reaction curves for predicting monopile response in undrained clay
Incorporating soil reaction curves at the monopile tip when calculating the response at the monopile head reduces overprediction of deformations when compared with solely employing traditional p-y models. This is particularly important for squat monopile foundations that are often used for offshore wind turbines. However, published soil reaction curves at the pile tip are limited in number and are the subject of far less research than the commonly employed p-y curves. In this work, closed-form expressions for the shear response at the pile tip are developed using a cone model for the soil material under the pile base, combined with a number of simplified non-linear soil constitutive models. The solutions can be used in conjunction with available p-y curves to obtain the full displacement response of monopile foundations without the need for time-consuming 3D numerical analyses, which is particularly useful in the early stages of design. The resultant non-linear expressions are compared with available solutions using a two-part similarity approach.
Cameron Walker; George Mylonakis; Dimitris Karamitros; Jamie J. Crispin; Abigail H. Bateman
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
8 - Monopile design to lateral monotonic loads
https://doi.org/10.53243/ISFOG2025-369
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