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Title:     
 
Torsionstragverhalten eines Segmentturms mit alternativer Fugenausbildung
 
Abstract:     
 
Eine Weiterentwicklung der zurzeit gängigsten Herstellungsart von Segmenttürmen für Windenergieanlagen stellt die veränderte Ausbildung der entstehenden Fugen dar. Die seit vielen Jahren für die Horizontalfugen verwendete Trockenfuge, welche ohne eine Ausgleichsschicht durch Epoxid- oder Zementmörtel auskommt, soll auch für die senkrechten Fugen verwendet werden. Die Ebenheit in den Fugen wird über eine hochpräzise CNC-Fräse hergestellt und dadurch die Dichtigkeit der Konstruktion sowie die flächige Kraftübertragung sichergestellt. Die in diesem Artikel durchgeführten numerischen Untersuchungen zeigen die durch die neuartige Konstruktion entstehenden Veränderungen in der Lastabtragung und der Tragfähigkeit. Für diese Konstruktionsart existieren derzeit keine allgemeingültigen Bemessungsansätze, welche die Veränderung des Querschnitts vom geschlossenen Kreisringsegment zu zwei “offenen” Halbkreisringsegmenten berücksichtigen.

Torsional behavior of a segment tower with an alternative joint design
Based on the most commonly constructed segment wind turbine towers at present, a further developed design of joints is described in this article. The dry joint which works without balancing layer of epoxy or cement mortar has been applied to wind turbine towers in the horizontal direction for many years. It should also be applied in the vertical direction. The evenness in the joint will be assured with the help of a high-precision milling machine. Therefore, the compactness and force transmission of the construction can be guaranteed. However, a decrease of structural resistance is still observed through numerical simulation. By changing the integral cross section to an open half-ring segment, the weak part can be easily pointed out in the structure design itself and also by current design approaches. There are currently no suitable theories or regulations for this kind of structural design.
 
Source:     Beton- und Stahlbetonbau 113 (2018), No. 11
 
Page/s:     799-806
 
Language of Publication:     German



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