LOAD-BEARING STRUCTURE IN BRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a load-bearing structure in a bridge capable of improving its load-bearing force and coping with a bridge girder having large span length effectively in the composite structure bridge girder forming the bridge girder by H steel members and concrete layers. SOLUTION: This load-proof structure in the bridge is constituted in such a way that it has a girder forming concrete layer 6 placed between upper and lower flanges 3 and 4 of the H steel member 1 forming the bridge girder in the bridge constituted by arranging both ends of the H steel member 1 in the direction of bridge width in parallel while supporting them on a bridge pier 5 by the lower flange 4 to form the bridge girder, it is provided with a tension cable 10 which is extended in the direction of bridge length while buried in the girder forming concrete layer 6 and whose both ends are fixed to both ends in the direction of bridge length of the H steel member 1, a deflection member 11 provided integrally with the H steel member 1 and deflecting the tension cable 10 downward is provided on the halfway of extension length of the tension cable 10, and upward force W2 generated as reaction of tension force W1 of the tension cable 10 is given to the H steel member 1 and the girder forming concrete layer 6 through the deflection member 11. COPYRIGHT: (C)2005,JPO&NCIPI