To be constituted the flange and the lower flange on intermediate fulcrum adjacent

摘要

PROBLEM TO BE SOLVED: To quickly construct by reducing the weight of metal, the number of man-hours and construction costs, and reducing concrete placing work on a job site; and to reduce the cost of transport to the job site.;SOLUTION: A continuous I-beam bridge, which is supported by one or more intermediate supporting points, includes a floor slab and an I-beam 30 which is equipped with an upper flange 32, a lower flange 34, a web 36 and vertical reinforcement rigid members 38. In the I-beam bridge supported by one or more intermediate supporting points, a precast plate 40 is arranged in the space formed on the lower flange 34 between the lower flange and the upper flange 32 in the area surrounded by the lower flange 34 near the intermediate supporting points, the web 36, and the vertical reinforcement rigid members 38. The lower flange 34 and the precast plate 40 are integrated with each other by a slip-prevention device which is not connected to the upper flange. Consequently, the local buckling of the lower flange 34 is prevented from occurring, and the lateral buckling strength can be increased.;COPYRIGHT: (C)2010,JPO&INPIT