GIRDER BRIDGE WITH REINFORCED CONCRETE COMPOSITE STEEL FLOOR SLAB

摘要

PROBLEM TO BE SOLVED: To provide a girder bridge with a reinforced concrete composite steel floor slab, which can reduce the height of a girder and minimize noise and vibration of the bridge caused by vehicle transportation.;SOLUTION: In construction of the girder bridge with the reinforced concrete composite steel floor slab, a steel floor slab 13 is formed by welding and fixing longitudinal ribs 12 to an upper surface of a deck plate 11 in a bridge axial direction, and a box girder 14 extending in the bridge axial direction is welded and fixed to a lower surface of the deck plate 11. After arrangement of reinforcements in a direction intersecting the longitudinal ribs, concrete 30 is placed on the steel floor slab 13, to thereby form an upper reinforced concrete composite steel floor slab 17. On the other hand, longitudinal ribs 16, 18 are welded and fixed to an upper surface of a lower flange 15 of the box girder 14 in the bridge axial direction, and after arrangement of the reinforcements in predetermined ranges on both sides of an intermediate fulcrum O of the box girder 14 borne by a pier 3, in a direction intersecting the longitudinal ribs 18, the concrete 30 is placed on the lower flange 15 of the box girder 14, to thereby form a lower reinforced concrete composite steel floor slab 19.;COPYRIGHT: (C)2009,JPO&INPIT