CONSTRUCTION STRUCTURE OF COMPOSITE VIADUCT AND CONSTRUCTION METHOD OF COMPOSITE VIADUCT

摘要

PROBLEM TO BE SOLVED: To provide a construction structure of a composite viaduct and a construction method of the composite viaduct which enables construction even in a narrow space in a short period of time and building at a lowered cost.

SOLUTION: A construction structure of a composite viaduct is equipped with: a CFT column 21 that is formed of steel pipes filled with concrete; an upper-layer beam steel box girder that can be constructed by arranging it on the CFT column 21 and moving it in a horizontal direction; an upper-layer beam steel box girder member 23 composed of an insert steel frame 24 that is installed to an anchor frame 22 provided on the CFT column 21 and to the upper-layer beam steel box girder; a CFT column joint part that joins the CFT column 21 and the upper-layer beam steel box girder member 23; and a composite beam floor slab 26 that is arranged on the upper-layer beam steel box girder member 23 and made of concrete.

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