| 摘要 |
The present invention provides a deformed girder recovery method and a device capable of removing a deformation in a girder using section stiffness of the other side of a girder mounted during bridge construction and a hydraulic jack. The method for recovering one or more deformed girders among n girders mounted during bridge construction comprises: a step for placing two spot girder holders on both spots of the n girders side-by-side in a perpendicular direction to a longitudinal direction, and installing spot support beams to allow the spot girder holders and the other undeformed girders to move as a single unit; a step for placing two center girder holders on centers of the n girders side-by-side in a perpendicular direction to a longitudinal direction, and installing center support beams to allow the center girder holders and the other undeformed girders to move as a single unit; and a step for, after recovering girders deformed by a lifting force of the hydraulic jack using a spot reaction section and the other girders′ stiffness, suppressing recovery of the deformation-removed girders by attaching a center vertical bar to the center girder holders; and a step for finally installing center horizontal beams and spot horizontal beams in the centers and spots between the n girders. |
