ERECTION CONSTRUCTING METHOD FOR CURVED STEEL FLOOR PLATE BRIDGE

摘要

PROBLEM TO BE SOLVED: To provide an erection constructing method for a curved steel floor plate bridge which is easy in execution and can shorten a construction period and reduce a manufacturing cost by dissolving the nonefficiency of a welding work due to multi-welding through half automatic welding after restrained welding of a previous decided welding section in the case of welding between curved steel floor plates consisting of a steel floor plate supported by a girder on a bridge pier as the erection constructing method of the curved steel floor plate bridge provided in a curved part such as a branch point of a grade separation. ;SOLUTION: A curved steel floor plate 6 is formed of steel floor plates 3, 5 arranged on a girder, and after a linear joint part 10 rectangular to a bridge axis in the floor plate 6 is welded, a bead in a crossing part with a curved joint part 10 along the direction of the bridge axis in the joint part 10 is cut to provide a passage 16. Next, a welder is moved along a bridge axis direction as it is passed through a cut bead passage of the joint part 10 through a fixed height rail provided on a oblique face below the curved joint part 11 along the bridge axis direction to continuously weld the joint part 11.;COPYRIGHT: (C)2000,JPO