[2033] Seismic Behavior and Assessment of Circular Concrete Columns Reinforced by Ultra-High Strength Rebars
キーワード：Circular column, Low residual deformation, Resilience, Steel plate confinement
Four circular columns with diameter of 250mm were tested under combined reversed cyclic lateral force to investigate the seismic behavior of circular concrete columns partially confined by bolted thin steel plates with the aim of developing earthquake-resilient concrete columns. The main experimental variables were the confinement method and axial load level. Test results have indicated that the partial confinement by bolted thin steel plates could assure circular concrete columns subjected to a high axial compression with axial load ratio of 0.50 of sufficient resilience till drift angle of 0.04 rad.