Abstract
Full-scale flexural reinforced concrete columns with cross sectional dimension of 2400mm were tested under quasistatic cyclic lateral loading in the laboratory. To determine the size effect on column inelastic behavior, a 1/4-scale replicate model was also loaded for comparison with the full-scale column behavior. Observed strains of transverse steel on compression flange side indicated that larger dimension of column section caused poorer restraint of buckling of longitudinal reinforcement. Experimental curvature profiles showed that plastic curvature in the replicate model developed up to a little higher section than the full-scale column, which might be caused by the difference of theoretical buckling length of londitudinal reinforcement. Furthermore, it was found that the base rotation induced by the strain penetration effect was different between the full-scale and replicate columns due to deterioration of the bond stress of footing concrete around post-yield longitudinal reinforcement.
