BRIDGE FALL PREVENTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a bridge fall prevention device having a compact structure capable of preventing a bridge from falling down by following changes in all directions while protecting a damper.SOLUTION: The bridge fall prevention device includes a damper 55 both ends of which are connected between a bridge footing 11 and a bridge girder 10 being interposed by a bracket 22 respectively. The bracket 22 is rotatable in three-dimensional directions. The damper 55 is arranged so that, when the tensile force reaches a preset stroke limit at the damper 55, a member fixed to the bracket 22 at the bridge footing 11 side and a member fixed to the bracket 22 at the bridge girder 10 side engaged with each other to function as a bridge fall prevention member 63.SELECTED DRAWING: Figure 1