EVALUATION ON THE SHEAR STRENGTHENING EFFECTOF RC COLUMNS WITH CARBON FIBER SHEETS

摘要

This study described the experimental and analytical works to investigate the structural behavior andshear retrofit performance of reinforced concrete (RC) columns with carbon fiber sheets (CFS).Experimental works were conducted for five specimens varied in the reinforcement quantity and adhesionmethod of CFS. Throughout cyclic test, the strength, stiffness, failure modes, ductility, and energydissipation capacity were discussed. As analytical works, FEM analysis was performed. The materialcomposition model of CFS and bond model between concrete and CFS are proposed and applied to theanalysis. The test and analysis results showed that the increase of the CFS quantity improved the ductilityand energy dissipation capacity and changed shear failure mode into flexural failure mode.