PISA design model for monopiles for offshore wind turbines: application to a marine sand
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
This paper describes a one-dimensional (1D) computational model for the analysis and design of laterally loaded monopile foundations for offshore wind turbine applications. The model represents the monopile as an embedded beam and specially formulated functions, referred to as soil reaction curves, are employed to represent the various components of soil reaction that are assumed to act on the pile. This design model was an outcome of a recently completed joint industry research project – known as PISA – on the development of new procedures for the design of monopile foundations for offshore wind applications. The overall framework of the model, and an application to a stiff glacial clay till soil, is described in a companion paper by Byrne and co-workers; the current paper describes an alternative formulation that has been developed for soil reaction curves that are applicable to monopiles installed at offshore homogeneous sand sites, for drained loading. The 1D model is calibrated using data from a set of three-dimensional finite-element analyses, conducted over a calibration space comprising pile geometries, loading configurations and soil relative densities that span typical design values. The performance of the model is demonstrated by the analysis of example design cases. The current form of the model is applicable to homogeneous soil and monotonic loading, although extensions to soil layering and cyclic loading are possible.
Date Issued
2020-11-01
Date Acceptance
2019-12-06
Citation
Geotechnique, 2020, 70 (11), pp.1048-1066
ISSN
0016-8505
Publisher
ICE Publishing
Start Page
1048
End Page
1066
Journal / Book Title
Geotechnique
Volume
70
Issue
11
Copyright Statement
© 2020 The Author(s). Published with permission by the ICE under the CC-BY 4.0 license. (http://creativecommons.org/licenses/by/4.0/)
http://creativecommons.org/licenses/by/4.0/
Sponsor
DONG Energy Wind Power A/S
DONG Energy Wind Power A/S
DONG Energy Wind Power A/S
Geotechnical Consulting Group
Grant Number
030-13-0133
030-13-0133
Layered Soils Extension Projec
CISM_P60087
Subjects
Geological & Geomatics Engineering
0905 Civil Engineering
0907 Environmental Engineering
0914 Resources Engineering and Extractive Metallurgy
Publication Status
Published
Date Publish Online
2020-10-21