PRESTRESSED CONCRETE BOX GIRDER BRIDGE HAVING STRUTS

摘要

A prestressed concrete box girder bridge having struts is provided to reduce the dead weight of an upper structure of a bridge by optimizing the cross section of a bridge girder, and to secure an open view at the lower part of the bridge by downscaling a pier and reducing the number of piers installed. In a prestressed concrete box girder(1), two box openings(2) are formed by a side wall(5) and a partition wall(3), cantilevers(4) projected to two sides, and struts(10) are arranged at regular intervals to support and reinforce the cantilevers. The struts are manufactured with FRP(fiber reinforced plastic) reinforced concrete beams and installed to be inclined between the bottom of the cantilever and the side wall of the box opening and arranged at regular intervals in the longitudinal direction of a bridge to support.