Transient response of offshore wind turbines on monopiles in sand

Role of cyclic hydro-mechanical soil behaviour

Journal article (2017)

Authors

S. Corciulo D' Appalonia S.p.A. - Marine & Offshore Engineering
F. Pisano Geo-engineering - CEG
Research Group
Geo-engineering (CEG) (TU Delft)
Copyright: © 2017 S. Corciulo, Omar Zanoli, F. Pisano
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Published Date

2017

Language

Undefined/Unknown

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Geo-engineering

Abstract

Offshore wind turbines (OWTs) in relatively shallow waters are most often founded on monopile foundations, whose design is extremely relevant to the OWT dynamic performance under environmental loading. In this study, 3D finite element (FE) modelling is applied to the dynamic analysis of OWTs and proposed as a valuable support to current design practice. FE results are presented about the interplay of cyclic soil behaviour and hydro-mechanical coupling in determining the OWT natural frequency: in dilative sands, the natural frequency seems not to decrease monotonically at increasing loading amplitude, while slight influence of soil permeability is found.