MOVABLE SCAFFOLD FOR REPAIRING BRIDGE LOWER FACE AND INSTALLATION METHOD FOR THE SAME

PROBLEM TO BE SOLVED: To provide a movable scaffold for repairing a bridge lower face with a simple structure, at a low cost and having excellent safety.SOLUTION: A scaffold (10) is provided with a scaffold body (12), a plurality of rail hangers (16) fixed at a prescribed interval to a ground covering part in the bridge axial direction and each having a protrusion beam protruding from the ground covering part to the outside, a rail (18) installed in the protrusion beams of the rail hangers to extend in the bridge axial direction and a scaffold body lift (24) installed in the rail through a trolley (20) and for lifting the scaffold body through a wire. The scaffold body is constituted to be lifted to a desired height by the scaffold body lift and to be transferred along the rail so that the scaffold body can be transferred to a desired place in the bridge axial direction.