ERECTION METHOD OF BRIDGE

PURPOSE: To improve workability and profitability by devising a hanging type by a hanger regarding the erection method of a bridge by a method of hanger type span-by-span precast block construction. CONSTITUTION: Blocks 3 transported on a bridge girder 2 are hung up by a crab trolley 16, and transported up to a place determined by turning the direction at 90 deg. and suspended successively by a B hanger 26 and an A hanger 25 hung down from an erection girder 11 again. The blocks 3 within a range required for the turn of the direction are suspended temporarily from the A hanger 25 in height lower than specified installation height once. Regarding the A hanger, the intervals of hanging materials are made larger than width in the bridge axial direction of the blocks 3, and the directions of the blocks 3 can be rotated in spaces among the hanging materials. The blocks 3 in number required in a single span are hung down, and the block 3 suspended from the A hanger 25 is pulled up to specified height and positioned. A working scaffold 23 is used from the front column head section side, and an adhesive is applied, drawn near and joined.