Improved exodermic deck system

Details Improved exodermic deck system Improved exodermic deck system

E - Fixed Constructions

01

D

E01D 19/12 (2006.01) E04B 1/16 (2006.01) E04B 5/17 (2006.01) E04B 5/29 (2006.01) E04B 5/36 (2006.01) E04C 2/04 (2006.01) E04C 2/42 (2006.01) E04C 3/293 (2006.01) E04C 5/04 (2006.01)

Patent

CA 2181554

An exodermic deck for structural floors including bridge floors, road beds, pedestrian walkways, or the line, comprises a composite structure of a grid component and a top component. The grid component is preferably made of steel and includes a plurality of main bearing bars and a plurality of distribution bars oriented perpendicular to the main bearing bars. The top component is preferably made from reinforced concrete. The upper portions of either the main bearing bars or the distribution bars are embedded in the reinforced concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete. The top sections of the embedded bars have gripping surfaces for effecting mechanical locks between the grid component and the concrete component and increasing the horizontal shear transfer therebetween. Studs may be welded to the upper portions of the embedded bars to further affect horizontal shear transfer and enhance the performance of the composite deck structure. If desired, the top component may be made from materials other than concrete, such as an epoxy-aggregate, while the bars of the grid component may be made from materials other than steel, such as fiber-reinforced plastic.

Passerelle exodermique (10) pour structures de planchers pour ponts, routes ou autres comportant une structure composite faite d'une grille (12) et d'une couverture (14). La grille (12) est de préférence en acier et comporte plusieurs poutrelles porteuses principales(16) et plusieurs barres de répartition (18). La couverture (14) est de préférence en béton armé (30). Les parties supérieures (25) des poutrelles porteuses (16) sont noyées dans le béton armé (30) de façon à permettre le transfert horizontal du cisaillement et à constituer une passerelle de structure composite (10) qui tire le meilleur parti de la résistance de l'acier à la traction, et du béton, à la compression. Les parties supérieures noyées dans le béton (25) des poutrelles présente une surface d'accrochage qui renforce la cohésion mécanique entre la grille (12) et le béton de la couverture (30) et, par là, le transfert du cisaillement horizontal entre eux.

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