Girder assembly having improved cross section stiffness of negative moment section

摘要

The present invention relates to a girder assembly of posts installed to be spaced apart from each other in vertical and horizontal directions, a plurality of saddles installed between the posts installed in the horizontal direction, and a temporary bridge installed between the saddles. The girder assembly of the present invention comprises: a pair of main beams spaced apart from each other by a predetermined interval; and a cross-section reinforcing plate for connecting lower parts of the main beams corresponding to a point part. According to the present invention, a cross section reinforcing plate for improving strength and cross-sectional stiffness is installed only in a region corresponding to the point part of the girder assembly, thereby securing structural stability, and preventing a cost loss due to unnecessary design. In addition, the cross section reinforcing plate for improving strength and cross-sectional stiffness is installed only in a region corresponding to the point part of the girder assembly, so the manufacturing time of the girder assembly is shortened, thereby remarkably reducing a construction period.