REINFORCING EXECUTION METHOD OF CONCRETE FLOOR SLAB OF BRIDGE MADE OF STEEL

PURPOSE: To conduct this execution method under vibrationless and noiseless states without disturbing traffic, to prevent even the deterioration of an existing concrete floor slab after completion and to improve efficiency. CONSTITUTION: Asphalt pavement 2 on a road surface is laid on existing concrete floor slabs 1, and arched-shaped combined floor slabs 3 are mounted to the lower sections of the concrete floor slabs 1. Arched-shaped frame floor slabs, reinforcing materials, etc., for negative moment and fillers are combined integrally in the arched-shaped combined floor slabs 3, and the floor slabs 3 are bone by receiving beams 41. The concrete floor slabs 1 and the arched- shaped combined floor slabs 3 function in a built-up beam manner to shearing force and bending moment applied to the concrete floor slabs 1 as external force, external force is shared in proper sections respectively, and the reaction of the arched-shaped combined floor slabs 3 is borne by the receiving beams 41 and transmitted finally to main girders 51, 52. The arched-shaped combined floor slabs 3 are extremely advantageous to shaft compressive force.