Assessment of p-y Curves from Numerical Methods for a non-Slender Monopile in Cohesionless Soil

Torben K. Wolf, Kristian L. Rasmussen, Mette Hansen, Hanne Ravn Roesen, Lars Bo Ibsen

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Abstract

In current design the stiff large diameter monopile is a widely used solution as foundation of offshore wind turbines. Winds and waves subject the monopile to considerable lateral loads. The current design guidances apply the p-y curve method with formulations for the curves based on slender piles. However, the behaviour of the stiff monopiles during lateral loading is not fully understood. In this paper case study from Barrow Offshore Wind Farm is used in a 3D finite element model. The analysis forms a basis for extraction of p-y curves which are used in an evaluation of the traditional curves. Different extraction methods are described and discussed.
Original languageEnglish
Place of PublicationAalborg
PublisherDepartment of Civil Engineering, Aalborg University
Number of pages13
Publication statusPublished - 2013
SeriesDCE Technical Memorandum
Number024
ISSN1901-7278

Keywords

  • Laterally Loaded
  • Monopiles
  • P-Y Curves
  • Finite Element Modelling
  • Plaxis 3D

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