Steel box girder bridge with CFT reinforcement member and construction method thereof

摘要

In the present invention, by installing CFT reinforcement in the axial direction on the upper surface of the lower flange of the branch segment installed in the continuous branch part of the steel box girder bridge constructed as a continuous bridge, there is no additional stress caused by drying shrinkage or creep of the concrete, It relates to a steel box girder bridge equipped with CFT reinforcement for easy construction and a construction method thereof. The steel box girder bridge provided with the CFT reinforcement of the present invention is composed of a lower flange and a pair of abdominal plates provided on both ends of the lower flange, and includes a branch segment installed in a continuous branch portion of the bridge; and an adjacent segment composed of a lower flange and a pair of abdominal plates provided on both ends of the lower flange and installed adjacent to the fulcrum segment; In the steel box girder bridge consisting of It is characterized in that it is fixed to the upper surface of the lower flange in a state in which the compressive force is previously introduced by doing so, and is provided in the longitudinal direction so that the tensile prestress is introduced into the lower part of the steel box girder by releasing the compressive force.