| 摘要 |
PURPOSE: An overhead bridge having a semiprecasted hybrid structure is provided to secure the safety of pedestrians crossing a river, a roadway or a railway. CONSTITUTION: The overhead bridge having a semiprecasted hybrid structure comprises: a rectangular steel girder(120) for placing four arched anchor bridges(130); an anchor bridge(130) for fixing an arched steel tube(110) on an H-beam of the steel girder(120); an anchor bridge floor plate for fixing to the steel girder; a circular floor plate provided with many bolt holes; a partition wall(122) connecting the H-beam of the steel girder(120) and a girder horizontally; an L-shaped vertical stiffener(123) connecting partition walls(122); a through hole(114) for filling up the arched steel tube(110) with high-strength shrinkage compensating admixture(112); a cable hanger lug(160) formed on the lower part of the arched steel tube and the upper part of the steel girder regularly; a cable bar(164) coupled to the arched steel tube and the cable hanger lug; a turn buckle(165) controlling the tensile force of a cable connecting the arched steel tube and the steel girder; and a footstool(150) coupled to the upper part of the steel girder for letting pedestrians walk down.
|
