制震ブレースを挿入した鋼製ラーメン橋脚の並列ハイブリッド実験システムによる制震性能の検証

抄録

Energy dissipation devices, such as high-performance buckling-restrained braces (BRBs) are expected to withstand major earthquakes three times without being replaced. For implementing the devices to bridges and other steel structures, it is important to verify the effect of reducing structural response under a ground motion. This paper presents results of the earthquake response analysis of single-story steel portal frame with BRBs. The BRBs are designed in consideration of the similarity rule, and paid attention to the difference in the inner setup of the frame. Two kinds of setups, obliquely setup and inverted V-shaped setup were considered. By the present testing method, it was confirmed that the designed BRB had good energy dissipation performance and showed difference of seismic control capacity.