橋梁の耐震 (1)

[I-69] Submersion Experiment of “Die and Rod Type Friction Damper” for Seismic Control of Bridge

*波田 雅也¹、牛島 栄¹、蔵治 賢太郎²、山﨑 彬¹、木村 浩之¹、藤本 和久¹、松原 拓朗²、久保田 成是² (1. 青木あすなろ建設、2. 首都高速道路)

Keywords:Friction Damper, Die and Rod Type, Bridge, Seismic Control, Submersion Experiment

Authors have proposed a seismic retrofit method that die-and-rod friction dampers are installed in bearing parts of existing bridges in the bridge axial rectangular direction. Friction dampers have many application records for earthquake-resistant reinforcement of buildings. However, when considering the possibility that the installation environment is more severe than buildings when applying to bridges, it is desirable to grasp the durability assuming more various situations. In this report, the friction damper was subjected to a submergence experiment, and waterproofness and water resistance were verified.