| 摘要 |
597062 A support structure for a wind turbine is disclosed. The structure is assembled from a series of spans of column shafts (1) with a frusto-conical shape, each span integrating two or more parts (2) and (3) with a polygonal or circular section formed with pieces pre-stressed in a bed in the factory, with centred or slightly deviated pre-stressing (4) and non-pre-stressed reinforcement (5) in the perimeter of the section or fibres. The pieces are attached by means of wet or dry longitudinal joints (6), rotated in plan view or not, and transverse joints (7) which can be at different levels. The present invention is different from the previous proposals, which are generally based on the post-tensioning of cables at the actual point of installation of the tower or wind farm, by providing the tower and the attachment joints with strength by pre-stressing in the factory, calculated according to the relative position that the piece will occupy in the tower or structure. Therefore the pieces forming the tower, by are already by themselves structurally resistant, requiring only the attachments between the adjacent and superimposed wall pieces to form the tower. Furthermore, costs are reduced since pre-stressing in the factory is an industrial process. Additionally the technology applied eliminates the need for auxiliary elements for transport, assures a state of compression in the pieces which maximizes the useful life of the tower, allows new designs and assembly alternatives which simplifies the tower. |
