PRESTRESSED REINFORCED CONCRETE GIRDER AND IT'S CONSTRUCTION METHOD

摘要

PURPOSE: A prestressed reinforced concrete girder and a construction method thereof are provided to increase service life and to overcome the dynamic limit. CONSTITUTION: A prestressed reinforced concrete girder comprises a girder(10), a side anchor block(20), a fixed anchor length for repair and reinforcement(60) and a fixed anchor length for secondary tension-cum-continuous tension. The girder is made of upper and lower flanges(12,14) and a web(16). The fixed anchor length for secondary tension-cum-continuous tension is inserted on top of the side anchor block and has a steel anchorage, a sheath and a PC steel wire for secondary tension-cum-continuous tension. The fixed anchor length for repair and reinforcement is inserted in the side anchor block and has a sheath for repair and reinforcement(50).