INSTALLATION METHOD FOR HANGING SCAFFOLDING IN BRIDGE STRUCTURE AND HANGING SCAFFOLDING

摘要

To enable the installation of a scaffolding on a bridge structure without going under the bridge.SOLUTION: The method comprises the steps of: extending a hoist side first wire HW1 through a bottom surface of a bridge girder 1 between a first side surface 6 which is one side surface in the width direction of a bridge girder 1 and a second side surface 7; hanging down a hanging scaffolding 100 by a crane CN from above the side of the second side surface 7 in the attitude in which the side of a first scaffolding hanging position FP1 is below the side of a second scaffolding hanging position FP2; rotating the hanging scaffolding 100 so that the difference in height between the first scaffolding hanging position FP1 and the second scaffolding hanging position FP2 becomes smaller while the hanging scaffolding 100 is lowered downward from above the side of the second side surface 7 so as to move the hanging scaffolding 100 to be located below the bridge girder 1; and hoisting a hoist side first wire HW1 and a hoist side second wire HW2 by a first hoist HT1 and a second hoist HT2 to fix the hanging scaffolding 100 on the bottom surface of the bridge structure.SELECTED DRAWING: Figure 17