| 摘要 |
PROBLEM TO BE SOLVED: To provide a reinforcing method and reinforcing structure of a bridge girder capable of easily and effectively performing the repair and reinforcement of an existing concrete bridge, which required a large-scaled work with technical difficulty and also large cost in the past, particularly, for the reinforcement of the bridge girder. SOLUTION: This reinforcing method and reinforcing structure comprises, in the repairing or reinforcing work of the existing concrete bridge, laying a plurality of lengthy bar-like fiber-reinforced plastic (FRP) tension materials on the lower surface of the concrete-made bridge girder of the concrete bridge along the longitudinal direction of the bridge girder, prestressing each of the FRP tension material, then spraying mortar so that the FRP tension materials are buried and fixed to the lower surface of the bridge girder, and integrating the existing concrete bridge girder to the FRP tension materials to improve the resistance to the tensile strength applied to the bridge girder lower part. COPYRIGHT: (C)2004,JPO |
