Support structure for wind turbines and process for erecting...

E - Fixed Constructions – 04 – H

Patent

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E04H 12/12 (2006.01) E04H 12/16 (2006.01) F03D 11/04 (2006.01)

Patent

CA 2762305

A support structure for wind turbines comprising a column shaft (1) formed by superimposed annular structural sections attached to each other by transverse joints (7), with a polygonal or circular fraction cross - section, each annular structural section comprising several of said adjacent wall pieces attached by longitudinal joints, wherein each of the wall pieces is obtained by prestressing in the factory and each of said wall pieces is assembled with the adjacent ones in superimposition to form the support structure, with an attachment only at their opposing abutting ends and without an additional post- tensioning affecting the entire pieces.

La structure de l'invention consiste en une série de segments de fût (1) de forme tronconique, chaque segment comprenant au moins deux pièces (2 et 3) à section sectorielle circulaire ou polygonale, les pièces constituantes étant précontraintes sur banc en fabrique, avec une précontrainte centrée ou légèrement déviée (4) et une ossature passive (5) dans le périmètre de la section ou des fibres, lesdits pièces étant jointes au moyen de joints longitudinaux (6) humides ou secs, tournés en plan ou non, et de joints transversaux (7) pouvant être à différents niveaux et assurer ou non la continuité de la précontrainte générale, en vue d'un assemblage au moyen de barres d'acier (12) et, en cas de jonction aux fondations, avec positionnement direct des aciers en attente simultanément à la réalisation des fondations, ou au moyen de gaines destinées à recevoir ultérieurement lesdites barres (16).

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