REINFORCING STRUCTURE FOR CONCRETE FLOOR BOARD STEEL GIRDER BRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a reinforcing structure for a concrete floor board steel girder bridge capable of reinforcing a ground cover and a wall handrail for forming a high soundproof wall and coping with a weight increase caused by reinforcement. SOLUTION: The RC(reinforced concrete) floor board girder bridge 10 is reinforced with a side section reinforcing structure 20 at formation portions of the ground cover 12A and the wall handrail 12B, and it is reinforced with a central section reinforcing structure 30 at a central section in the width direction. In the side section reinforcing structure 20, reinforcing steel plates 21 (an outside plate 21A and an inside plate 21B as side section reinforcing plates) arranged on both the inside and outside of the wall handrail 12B are fastened and fitted by fastening bolts 23 penetrating the reinforcing steel plates 21 and the wall handrail 12B. The upper edge section of the outside plate 21A on the outer face side is extended to the prescribed height and integrally formed with the soundproof wall 24, and its lower edge is connected to an outer main girder 11A by a diagonal side plate 25.