Development of a lifetime cyclic design method for offshore foundations
File(s)
Author(s)
Tantivangphaisal, Pishun
Taborda, David
Kontoe, Stavroula
Type
Conference Paper
Abstract
The cost of foundations supporting offshore wind turbines (OWT) continue to influence the feasibility of new developments and the speed at which new sources of renewable energy are brought online. A technical challenge remains to design OWT foundations efficiently, accounting for the impact of long-term cyclic environmental actions. The combined effects of accumulated deformation and soil stiffness evolution with long-term cyclic loading have consequences for both serviceability and fatigue limit state design. Recent work on the implementation of the high-cycle accumulation framework to model the lifetime behaviour of offshore monopile foundations subject to lateral cyclic loading and validation against field tests is first summarised. This includes site-specific calibration procedures for a dense marine sand at Dunkirk and a glacial till at Cowden, demonstrating the field scale response can be reproduced well by calibrating the models using only in-situ CPT data and cyclic triaxial laboratory tests with initial conditions close to those encountered in-situ. Normalisation of results from sets of parametric numerical analyses of reference
monopiles founded in uniform sands and layered sand-and-clay stratigraphy are finally presented. These can inform rapid prototyping of foundation solutions at optioneering stage and can be interrogated for use in reliability-based design methods.
monopiles founded in uniform sands and layered sand-and-clay stratigraphy are finally presented. These can inform rapid prototyping of foundation solutions at optioneering stage and can be interrogated for use in reliability-based design methods.
Date Issued
2026-06-14
Date Acceptance
2026-06-01
Citation
Proceedings of the 21st ICSMGE, 2026, pp.3519-3524
ISBN
978-3-9503898-4-5
Publisher
ÖGG, Austrian Society for Geomechanics
Start Page
3519
End Page
3524
Journal / Book Title
Proceedings of the 21st ICSMGE
Copyright Statement
© 2026 The Author(s).
Source
ICSMGE 2026
Publication Status
Published
Start Date
2026-06-14
Finish Date
2026-06-19
Coverage Spatial
Vienna, Austria