2015 Volume 22 Issue 85 Pages 85_143-85_151
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. In past studies, deformation capacity of BRBs was considered by axial loading test. This paper presents test results of the deformation capacity of BRB with inter-story drift in steel portal frame. Deformation of the BRBs installed at the frame, the bending moment acts on both ends of the BRB by the inter-story drift. By the present test, it was confirmed that the BRBs had good deformation capacities in the inter-story drift angle 0.02 under cyclic loading and additional bending.
