FLOOR SLAB STRUCTURE USING SANDWICH TYPE COMPOSITE FLOOR SLAB PANEL

PROBLEM TO BE SOLVED: To provide a floor slab structure having high rigidity as a floor slab of sandwich type composite floor slab panel, allowing super-rapid construction to be performed by rationalizing a joint structure by utilizing a characteristic that deformation is small, and also exhibiting excellent durability.SOLUTION: A steel shell is constituted as a floor slab installed on main girders 1 of a bridge, by an upper steel plate 3a and a lower steel plate 3b, a plurality of shape steels as rib materials 3c arranged in parallel in the direction perpendicular to the bridge axis on the lower steel plate 3b, and four rounds of side plate 3e, and a sandwich type composite floor slab panel 3 made of the steel shell filled with concrete 3d is used. No coupler is used for a butting part of mutual sandwich type composite floor slab panels 3, but the panels 3 are mutually joined only by butting or by a simple joint member which does not transmit bending action as the floor slab substantially. To the main girder 1, a sandwich type composite floor slab panel 3 is bolt-joined through a floor slab joining member, or joined by assembling a buffer material, a reaction support material, or the floor slab joining member.