State‐of‐the‐Art Framework for Structural Design of Offshore Wind Jacket Foundations. Issue 3 (16th September 2019)

• Record Type: Journal Article
• Authors: Nielsen, Martin Bjerre; Jensen, Jacob Fisker; Harper, Christopher; Knudsen, Lennart Skovbjerg; Pedersen, Ronnie Refstrup
• Is Part Of: Ce/papers. Volume 3:Issue 3/4(2019)
• Page Start: 817
• Page End: 822
• Publication Date: 2019-09-16
• Subjects: Offshore wind turbine foundations -- Steel design -- Superelements -- Influence matrices; Civil engineering -- Periodicals; 624
• DOI: 10.1002/cepa.1139
• Languages: English
• ISSNs: 2509-7075

Abstract

ABSTRACT: A state‐of‐the‐art framework for design of jacket foundations for offshore wind turbines is presented. It is illustrated how an efficient, yet highly accurate structural model can be achieved by a combination of a comprehensive beam finite element model and more detailed shell/solid finite element models, where the former suffices for representing the overall global behaviour, while the latter improve the representation of non‐trivial structural details such as the transition piece and tubular joints. Hereby the verification of the majority of the structural elements according to various design codes can be automated on beam element level, while the fatigue performance via the hot‐spot method as well as detailed stress and buckling analysis for relevant joints and details can be performed based on the detailed shell/solid finite element models readily available for stiffness representation. This computational framework ensures consistency between the local and global description levels and an efficient cloud interface facilitates the thousands of design load cases that typically requires consideration for a full detailed design to be simulated within a reasonable amount of time.