Sandwichtürme für Windenergieanlagen mit höherfesten Stahl- und Verbundwerkstoffen

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Christian Keindorf
  • Peter Schaumann

Research Organisations

External Research Organisations

  • SKI Ingenieurges. mbH
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Details

Translated title of the contributionSandwichtowers for wind turbines with high strength steel and core materials
Original languageGerman
Pages (from-to)648-659
Number of pages12
JournalSTAHLBAU
Volume79
Issue number9
Publication statusPublished - 6 Sept 2010

Abstract

The performance and the dimensions of wind energy converters have been increased significantly within the last few years. Thus, the requirements on tower constructions will also increase following the development of bigger turbines. Usually tubular steel and pre-stressed concrete towersare chosen as support structures for wind turbines. The structural designof tubular steel towers is mainly driven by ultimate and fatigue limit state. Especially shell buckling leads to large dimensions and thicknesses for the steel sections. Therefore, a new kind of tower, the so called sandwichtower, has been developed as an alternative solution with the aim ofincreasing the shell stability. The sandwich tower consists of an inner and outer steel shell which are bonded together with a core material between them. That works as a full space stiffener. As a result of the investigations a combination of steel and sandwich-section is favoured where thesandwich is only planned for the lower tower section to get higher stability simultaneously with thinner shells. Therefore, the effective welding time can be decreased when the shells are made of high strength steels. Especially for tower sections with D > 4.3 m a new fabrication concept withlongitudinal partial shells is developed to offer the transportation onshore and to minimize the number of critical circumferential welds. FüRthermore, a new kind of connection between the tower sections is presented without bolted ring flanges.

ASJC Scopus subject areas

Cite this

Sandwichtürme für Windenergieanlagen mit höherfesten Stahl- und Verbundwerkstoffen. / Keindorf, Christian; Schaumann, Peter.
In: STAHLBAU, Vol. 79, No. 9, 06.09.2010, p. 648-659.

Research output: Contribution to journalArticleResearchpeer review

Keindorf C, Schaumann P. Sandwichtürme für Windenergieanlagen mit höherfesten Stahl- und Verbundwerkstoffen. STAHLBAU. 2010 Sept 6;79(9):648-659. doi: 10.1002/stab.201001359
Keindorf, Christian ; Schaumann, Peter. / Sandwichtürme für Windenergieanlagen mit höherfesten Stahl- und Verbundwerkstoffen. In: STAHLBAU. 2010 ; Vol. 79, No. 9. pp. 648-659.
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