橋梁床版(1)

[I-364] Design Bending moment of cast-in-place long span PC slab in multi-main girder

〇Takeshi Yamaguchi¹, Keita Ueno², Satoru Sakashita², Koji Hirokado³, Takao Yamada³ (1.Central Nippon Express Company Ltd., 2.MM BRIDGE Company Ltd., 3.TAKADAKIKO Company Ltd.)

Keywords:Long span PC slab, Multiple main girders, 3D FEM analysis, Design bending moment

Kuzuhagawa bridge in Shin-tomei is wide road width more than 37 meter. Therefore slab type is adopted five main girder with cast-in-place long span PC slab beyond Road Bridge Specifications (2012.3).
The design bending moment formula of the long span PC slab has been clarified by previous research, but its object is mainly two main girders. Therefore, in this paper, the applicability of the existing design bending moment formula was verified for multiple main girders, and the design bending moment immediately above the middle girder, which had not been clarified, was examined using 3D FEM analysis.