METHOD FOR CARRYING OUT REPLACEMENT OF AN UPPERSTRUCTURE OF A BRIDGE

摘要

The present invention relates to a method for replacing an upper structure of a bridge, which removes an existing upper structure without an interruption to the operation of a vehicle or train. The method for replacing an upper structure of a bridge according to the present invention comprises: a step of installing a temporary part under a first upper structure; a step of installing a bridge lifting device for supporting and lifting the first upper structure on the top of the temporary part; a step of supporting the first upper structure by the bridge lifting device; a step of installing support brackets on the bottom of first point parts located at both ends of the first upper structure to support the first point parts; a step of cutting the first point parts; a step of moving a temporary girder to be located on the top of first upper structure; a step of removing the support brackets; a step of removing the center part of the first upper structure by the bridge lifting device; a step of removing the cut first point parts; a step of installing the temporary girder at a first height and installing a temporary road or a temporary railway on the top of the temporary girder; a step of manufacturing a new second upper structure and locating the second upper structure on the bottom of the temporary girder; a step of removing the temporary girder from the second upper structure; and a step of locating the second upper structure at the first height and installing a road or a railway on the top of the second upper structure.