合成桁，床版，プレハブ

[CS6-30] Trial design of double composite three-span continuous box girder bridge

*Naoki Okayama¹, Yui Yanao², Yusuke Imagawa³, Osamu Ohyama³ (1. Osaka Institute of Technology, 2. FaB-Tec Japan Corporation, 3. Osaka Institute of Technology)

Keywords:Steel narrow box girder, Double composite, Lower concrete slab, Limit state design method, Compact section