橋梁(1)

[VI-204] Mixing and construction method of cast-in-place adjustment joint concrete in precast segment method

Tatsuhiko Aoyama¹, 〇Yuu Murai¹, Keita Masumoto¹, Tsunehisa Yamaguchi¹, Yuuji Watanabe¹, Kei Hashimoto², Yasutaka Yamashita², Naoki Nagahisa² (1.KAJIMA corporation, 2.West Nippon Expressway Company Limited.)

Keywords:Precast segment, Adjustment joint concrete , High flow concrete, Fly ash, Expansive concrete, Offshore construction

The Yoshinogawa Ohashi Bridge (tentative name), which is part of the Shikoku Crossing Expressway, is a PC15 span continuous box girder bridge with a length of 1,696.5 m, constructed at the mouth of the Yoshino River, a first-class river flowing east-west through Tokushima Prefecture. Initially, this construction was planned by the cast-in-place erection method, but it was changed to the precast segment method to shorten the process after ordering. In this report, we report on the concrete mix and construction method of the cast-in-place adjustment joint in the precast segment method.