Abstract
The Kouchigawa Bridge is a highway bridge spanning the Kouchi River on the Shin-Tomei Expressway linking between Tokyo and Nagoya. It is an eight-span continuous steel-concrete hybrid balanced arch bridge with a bridge length of 771 m, arch span length of 220 m and a maximum pier height of approximately 90 m. In the arch section of the bridge superstructure, the concrete arch rib with a single-cell prestressed concrete box girder section is cantilevered, using an enormously large special form traveler, by fixing and jointing pre-grouted PC steel bars of 40 mm diameter. The tensioning of the temporary and permanent stay cables, the erection of the steel vertical members, and the erection of the steel stiffening-girders made of high-strength steel SBHS 500 are carried out in sequence. Steel-concrete composite construction technology is applied to the arch-springing and the end-span connections, where steel and concrete members are joined.
Published Version
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