Bridge and bridge girder made by bending steel plate for the same

摘要

The present invention relates to a bending iron plate bridge girder having an upper surface arranged in a plane, so that it is easy to install an accessory or a formwork of a bridge upper plate, the bending strength in the vertical direction is improved, and the bonding force of the left and right bending parts is excellent. The bent steel plate bridge girder is a bridge girder installed on the bottom of the bridge upper plate to support the load of the bridge upper plate to a bridge support installed in a bridge or abutment, in which the steel plate is bent or the bent steel plate is welded to close the square Or a girder body formed to have a trapezoidal cross-sectional shape.