| 摘要 |
A structure of a prestressed concrete girder with an upward projected flange is provided to cut down construction cost by lowering the entire height of a bridge owing to inserting a protruded part to a slab, to improve structural stability by passing a continuous steel wire to the protruded part, and to construct easily by placing an anchor in a lower end of an end of the prestressed concrete girder. A prestressed concrete girder(60) is installed between piers, and a continuous steel wire(70) is inserted to the prestressed concrete girder to apply compressive stress to the prestressed concrete girder before or after forming a slab(80). The prestressed concrete girder is formed of a T-beam, and provided with a lower flange(61) and an upper flange(63). The lower flange is placed on the pier, and the slab is supported by the upper flange. A protruded part(65) is formed in the middle of an upper part of the upper flange to arrange the prestressed concrete girder symmetrically. A duct(66) is formed in the prestressed concrete girder and passed by the continuous steel wire. A duct(62) is formed in the lower flange and penetrated by the continuous steel wire. |
