| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plate girder bridge and a box girder bridge suitable for a location with much salinity flying due to wind. <P>SOLUTION: A lattice-like plate-like member 9 is mounted to a girder lower flange 4 of a main girder 2, which is on the upwind side, to be perpendicular to an angle at which wind is separated from the outer end of the girder lower flange or to be inclined at 30 to 45 degrees from the lower flange. Preferably, a corner is formed at least at one end in the opening direction of an opening of the lattice-like plate-like member 9 and the plate-like member 9 is mounted on the lower flange such that the opening linearly formed is on the upwind side. More preferably, the width of the lattice-like plate-like member 9 is larger than that of the lower flange and the opening consists of three or more rows of opening parts in a direction perpendicular to a bridge axis. <P>COPYRIGHT: (C)2013,JPO&INPIT |
