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

摘要

PROBLEM TO BE SOLVED: To enable rapid construction 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 10, which is supported by at least one intermediate supporting point 12, comprises a floor slab 16, and an I-beam 30 which is equipped with an upper flange 32, a lower flange 34 and a web 36. In the I-beam bridge 10, a precast plate 40 is arranged under the lower flange 34 near the intermediate supporting point 12, and the lower flange 34 and the precast plate 40 are integrated together. This prevents the local buckling of the lower flange 34, and enhances lateral buckling strength.;COPYRIGHT: (C)2007,JPO&INPIT