Segments for building spliced prestressed concrete girder...

E - Fixed Constructions – 04 – C

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E04C 3/22 (2006.01) B28B 23/06 (2006.01) E01D 2/00 (2006.01) E04B 1/21 (2006.01) E04B 1/22 (2006.01) E04C 3/26 (2006.01) E04G 21/14 (2006.01)

Patent

CA 2603559

There is provided a method of manufacturing a segment which is used to build a spliced prestressed concrete girder by combining a plurality of the segments, the method comprising: manufacturing one or more joint blocks, each having a first end that has a shear key and is to be spliced to an end of an adjacent segment and having a second end that is bonded to a segment body of the segment; and manufacturing the segment body by using the one or more joint blocks as one or more ends of a formwork in which the segment body is to be made and by casting and curing concrete in the formwork, wherein the one or more joint blocks are fixedly bonded to one or more ends of the segment body in the manufacturing of the segment body.

L'invention concerne un procédé de fabrication d'un segment utilisé pour construire une poutre épissée en béton précontraint, par combinaison d'une pluralité de segments. Le procédé consiste à fabriquer un ou plusieurs blocs de joint, chaque bloc présentant une première extrémité munie d'une clé de cisaillement et devant être épissé jusqu'à une extrémité d'un segment adjacent; et une seconde extrémité attachée à un corps du segment. Le procédé consiste ensuite à fabriquer le corps du segment par utilisation du (des) bloc(s) de joint en tant qu'une ou plusieurs extrémités d'un coffrage dans lequel le corps du segment doit être réalisé, et par coulage et séchage du béton dans le coffrage. Le(s) bloc(s) de joint est (sont) solidement fixé(s) à l'extrémité ou aux extrémités du corps du segment au cours de la fabrication de ce dernier.

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