Prestressed slab element

E - Fixed Constructions – 04 – B

Patent

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Details

E04B 5/02 (2006.01)

Patent

CA 2744095

The invention relates to a prestressed slab element (10), in particular a concrete slab element, manufactured according to the in-situ concrete method or prefabricated in a concrete precasting plant which in top view of its surface (11) comprises at least one hollow element region (20) with hollow elements (21) contained therein and at least one support region (30) for supporting or holding the slab element (10) without hollow elements (21), as well as stressing elements (40) for reinforcing the slab element (10), which each are installed through the slab element (10) and form a lattice-shaped structure (50), wherein individual fields (51) of this structure (50) establish a support or hollow element region (20, 30), and laterally adjoining fields (51) of the lattice-shaped structure (50) form at least one longish support strip (60) which joins individual support regions (30) with one another and which is embodied in a reinforced manner, characterized by stressing elements (40), which in a lateral view of the slab element (10) are installed in the slab element (10) wave-like and which support themselves on at least one lattice system (90) of bars (91) with hollow elements (21) held therein whose respective height is adapted to the wave shape.

L'invention concerne une dalle précontrainte (10), en particulier une  dalle de béton, fabriquée selon le procédé de fabrication de béton in situ ou préfabriquée dans une installation de préfabrication du béton. Ladite dalle, en coupe horizontale de sa surface (11), comporte au moins une région d'élément creux (20) contenant des éléments creux (21) et au moins une région de support (30) sans élément creux (21) pour porter ou soutenir la dalle (10), ainsi que des éléments de contrainte (40), pour renforcer la dalle (10), qui sont installés au travers de la dalle (10) pour former une structure en forme de treillis (50), des zones individuelles (51) de cette structure (51) établissant un support ou une région d'éléments creux (20, 30), et des zones latéralement adjacentes (51) de la structure en forme de treillis (50) formant au moins une bande de support assez longue (60) qui réunit les régions de support individuelles (30) les unes aux autres et qui est créée d'une manière renforcée.  Ladite dalle est caractérisée par des éléments de contrainte (40) qui, en vue latérale de la dalle (10), sont installés dans la dalle (10) sous une forme ondulée et qui se portent eux-mêmes sur au moins un système en treillis (90) de barres (91) avec des éléments creux (21) maintenus à l'intérieur, et dont la hauteur respective est adaptée à la forme de l'ondulation.

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