| 摘要 |
PROBLEM TO BE SOLVED: To further enhance safety in delivery of a bridge girder, suppress the influence exerted on traffic below a bridge girder, shorten construction steps, and reduce the construction cost.SOLUTION: A bridge erection device is used to bridge a bridge girder 102A between prescribed bridge footings 101A by delivering the bridge girder 102A in a bridge axial direction above the bridge footing 101. The bridge erection device includes: rails 2 extending along the bridge axial direction at a level lower than the height of the bridge footing 101 and arranged on both sides in the width direction of the bridge footing 101 at an interval larger than the width of the bridge footing 101; a moving bent 3 having movable parts 31 provided to be movable along the rails 2 in the bridge axial direction, and fitting parts 32 which are arranged at a position higher than the bridge footing 101 from the movable parts 31 and to which a rear end of the bridge girder 102A is fitted; and a feeding mechanism fixed along the bridge footing 101 separate from the rails 2, and supporting the underside of the bridge girder 102A at an upper height position similar to the height at which the bridge girder 102A is arranged on the bridge footings 101A. |
