Construction method for girder in bridge, crane for pulling up girder, vehicle for carring girder, and girder used for the same

Abstract

A construction method for a girder in a bridge which a plurality of piers are installed in an interval in a longitudinal direction of the bridge, a plurality of copings are installed on the piers, and a plurality of girders respectively installed between the piers are installed on the copings, the method comprising the steps of: installing at least one temporary girder on a front coping of the copings and a rear coping adjacent to the rear coping of the copings; installing a crane for pulling up a girder having a girder pulling up space therein guided by the temporary girder; providing with a girder by a pre-cast method so as to install a girder on the front coping and the rear coping; providing with a vehicle for carrying a girder, the vehicle being constituted so that load of a girder to the piers carried by the vehicle is distributed to the piers through the upper surface of the girders installed in advance; introducing the vehicle carrying a first girder moving along a guide of the temporary girder to a girder pulling up space of the crane; pulling up the first girder by the crane; drawing out the vehicle backward from the girder pulling up space; moving a first temporary girder of the temporary girders from a position where the first girder is to be installed to a front of the front coping of the one of the copings and installing the first temporary girder on a next front coping installed in a next front of the front coping and the front coping; and settling the first girder on the front coping and the rear coping by the crane is disclosed.

Dependencies are inferred from the claim text.