診断・補修・補強(2)

[I-404] EXPERIMENTAL STUDY ON REPAIR METHOD USING CFRP FOR CORRODED GUSSET PLATE CONNECTION IN TRUSS BRIDGE

〇Takuya Harada¹, Toshihiko Nagatani¹, Kazuo Ohgaki², Shimomae Teru², Takeshi Miyashita³, NgocVinh Pham³, Yusuke Okuyama⁴, Yuya Hidekuma⁵, Akihiro Nishino⁵ (1.Nippon Expressway Research Institue, 2.Institute of Technologists, 3.Nagaoka University of Technology, 4.National Institute of Technology, Nagano College, 5.Nippon Steel Chemical & Material)

Keywords:CFRP sheet, truss bridge, connection, corrosion, repair method

Recently, severe damage to gusset plate connection of steel truss bridges owing to corrosion has been widely reported . The attachment of stiffening plate and member replacement are some of traditional meth-ods often applied to repair corroded structures. However, these repair works lack in workability because of heavy machinery and welding facilities. In order to overcome this problem, this study focused on investi-gating the effectiveness of repair method by using carbon fiber reinforced polymers for the cor-roded gusset plate connection.
In this study, the remaining load-carrying capacity of a corroded gusset plate connection was evaluated by using loading test.