June 23, 2022
New Design Tools for Laterally Loaded Wind Turbine Monopiles (PISA JIP)
Organizer: Byron Byrne, Professor, University of Oxford
Moderator: Proserpine Peralta
Offshore wind turbines in shallow coastal waters are typically supported on monopile foundations. The webinar describes a new 1D design model for monopile foundations which was developed through the Pile Soil Analysis (PISA) JIP, which ran between 2014 and 2018. The model is specifically formulated for offshore wind turbine applications, although the general approach could be adopted for other applications. The model draws on the conventional p–y approach, but extends it to include additional components of soil reaction that act on the pile. The 1D model is calibrated using a set of bespoke 3D finite-element analyses of monopile performance, for pile characteristics and loading conditions that span a predefined design space. The calibrated 1D model provides results that match those obtained from the 3D finite-element calibration analysis, but at a fraction of the computational cost.
This 1D modelling approach will be demonstrated for monopiles installed in a stiff, over-consolidated glacial clay till with a typical North Sea strength and stiffness profile. The general approach can be applied to other foundation and soil–structure interaction problems, in which bespoke calibration of a simplified model can lead to more efficient design.
As a follow-up to the above webinars, pre-conference workshops will address practical, hands-on applications to illustrate the use of the methods presented in the webinars and will be offered on Sunday August 28, 2022.
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