PRESTRESSED CONCRETE U-GIRDER WHICH THE HOLLOW PIPE CONTAINED, AND IT'S CONTINUATIONIZED METHOD OF CONSTRUCTION

摘要

A prestressed concrete U-girder containing a hollow pipe therein and a continuous construction method for the same are provided to construct a bridge having a continuous structure by mounting continuation fixation device. A prestressed concrete U-girder containing a hollow pipe therein comprises a U-girder, the hollow pipe, and a plurality of fixation devices(30,40,50). The U-girder is constituted by a web(12) and a flange(14). The hollow pipe is inserted in the web and has a predetermined sectional shape. A plurality of the fixation devices are fixed to a flank of the web to fix a plurality of steel wires. A continuous construction method for the U-girder comprises the steps of assembling a reinforcing rod, mounting the hollow pipe, a main tension steel wire, the fixation device, and a continuation connection steel, thereby performing first tensioning, mounting a continuation connection part by mounting the U-girder and connecting the continuation connection steel with a continuation steel cover by a high-tension bolt, finishing by filling the continuation connection part with concrete and injecting epoxy or non-shrinkage mortar, forming a slab by concrete, performing second tension, and performing second tensioning.