Load transfer plate for in situ concrete slabs

E - Fixed Constructions – 01 – C

Patent

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Details

E01C 11/14 (2006.01)

Patent

CA 2460514

A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in- place concrete slabs. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts. A tapered load plate and an end cap may be used to provide load transfer across an expansion joint.

Selon la présente invention, une plaque de charge tronconique transfère des charges sur un joint situé entre des dalles de plancher en béton adjacentes. Les surfaces supérieures et inférieures peuvent diminuer progressivement à partir d'environ 4 pouces de largeur jusqu'à une extrémité étroite sensiblement pointue sur une longueur d'environ 12 pouces. La plaque de charge tronconique s'adapte à un retrait différentiel de dalles en béton coulées sur place. Lorsque des dalles adjacentes s'éloignent les unes des autres, l'extrémité étroite de la plaque de charge tronconique sort du vide qu'il a créé dans la dalle, permettant ainsi aux dalles de se déplacer relativement les unes aux autres parallèlement au joint. Les plaques de charge tronconiques peuvent être assemblées en un écran de plaques de charge, le sens du bord aminci alternant entre une plaque de charge tronconique et la suivante pour compenser des traits de scie excentrés. Une plaque de charge tronconique et un couvre-joint peuvent être utilisés pour permettre un transfert de charge sur un joint de dilatation.

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