Comparison of Foundation Systems for Wave Energy Converters Wavestar

Evelina Vaitkunaite, Lars Bo Ibsen, Benjaminn Nordahl Nielsen, Salvador Devant Molina

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Abstract

In order to deliver cost competitive solutions, Wave Energy Converters (WEC) must be optimized in several fields, e.g. transportation, installation, structure, machinery etc. Large expenses lie on the superstructure support, i.e. the offshore foundation. Geotechnical analysis and optimization of six possible foundation solutions for WEC are presented in this article. The study is performed for WEC superstructure supported by two or four foundations. In the four-column system horizontal wind and wave loads are transformed as a pair of vertical forces, acting in tension and compression. When the overturning moment is large, it might be desirable to increase the width distance, achieving smaller vertical forces. For this reason, several distances between the supporting columns are investigated. Additionally, a two-column system is analysed as it is expected to be more cost effective. In such a solution horizontal wind and wave loads are dominant.

Gravity based, pile and bucket foundations are universally applied solutions for the offshore structures. The suitability of these types for a WEC is analysed and commented. The foundations are designed to satisfy ultimate and serviceability limit state requirements. For each of the foundation solutions, three geotechnical design steps are followed, employing analytical calculations, numerical 2D and 3D finite element programs.
OriginalsprogEngelsk
Titel10th ewtec 2013 European Wave and Tidal Energy Conference Series : Proceedings of the 10th European Wave and Tidal Energy Conference
RedaktørerPeter Frigaard, Jens Peter Kofoed, AbuBakr S. Bahaj, Lars Bergdahl, Alain Clément, Daniel Conley, Antonio F. O. Falcão, Cameron MacLeod Johnstone, Lucia Margheritini, Ian Masters, António José Sarmento, Diego Vicinanza
Antal sider9
UdgivelsesstedAalborg
ForlagTechnical Committee of the European Wave and Tidal Energy Conference
Publikationsdato2013
StatusUdgivet - 2013
BegivenhedEuropean Wave and Tidal Energy Conference - Aalborg, Danmark
Varighed: 2 sep. 20135 sep. 2013
Konferencens nummer: 10

Konference

KonferenceEuropean Wave and Tidal Energy Conference
Nummer10
Land/OmrådeDanmark
ByAalborg
Periode02/09/201305/09/2013
NavnEuropean Wave and Tidal Energy Conference Series
Nummer10

Bibliografisk note

The proceedings is published on a usb.

Emneord

  • Bucket
  • Pile
  • Gravity based foundation
  • Geotechnical design
  • Wave energy converter
  • Wavestar

Fingeraftryk

Dyk ned i forskningsemnerne om 'Comparison of Foundation Systems for Wave Energy Converters Wavestar'. Sammen danner de et unikt fingeraftryk.

Citationsformater