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Design of monopiles for offshore wind turbines in 10 steps

Arany, L, Bhattacharya, Subhamoy, Macdonald, J and Hogan, SJ (2017) Design of monopiles for offshore wind turbines in 10 steps Soil Dynamics and Earthquake Engineering, 92. pp. 126-152.

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Abstract

A simplified design procedure for foundations of offshore wind turbines is often useful as it can provide the types and sizes of foundation required to carry out financial viability analysis of a project and can also be used for tender design. This paper presents a simplified way of carrying out the design of monopiles based on necessary data (i.e. the least amount of data), namely site characteristics (wind speed at reference height, wind turbulence intensity, water depth, wave height and wave period), turbine characteristics (rated power, rated wind speed, rotor diameter, cut-in and cut-out speed, mass of the rotor-nacelle-assembly) and ground profile (soil stiffness variation with depth and soil stiffness at one diameter depth). Other data that may be required for final detailed design are also discussed. A flowchart of the design process is also presented for visualisation of the rather complex multi-disciplinary analysis. Where possible, validation of the proposed method is carried out based on field data and references/guidance are also drawn from codes of practice and certification bodies. The calculation procedures that are required can be easily carried out either through a series of spreadsheets or simple hand calculations. An example problem emulating the design of foundations for London Array wind farm is taken to demonstrate the proposed calculation procedure. The data used for the calculations are obtained from publicly available sources and the example shows that the simplified method arrives at a similar foundation to the one actually used in the project.

Item Type: Article
Subjects : Civil Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Arany, LUNSPECIFIEDUNSPECIFIED
Bhattacharya, Subhamoys.bhattacharya@surrey.ac.ukUNSPECIFIED
Macdonald, JUNSPECIFIEDUNSPECIFIED
Hogan, SJUNSPECIFIEDUNSPECIFIED
Date : January 2017
Identification Number : 10.1016/j.soildyn.2016.09.024
Copyright Disclaimer : © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Monopile, Offshore Wind Turbines, Eigen Frequency
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 12 Oct 2016 13:19
Last Modified : 11 Jul 2017 07:47
URI: http://epubs.surrey.ac.uk/id/eprint/812378

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