Shear Capacity of RC Beam Strengthened by CFS

摘要

The objective of this study is to develop a new equation that can predict the strengthening effect on the shear capacity of the RC beam with Carbon Fiber Sheets. To evaluate the influence on each experimental variable, the existing test data were investigated. The variables that had effects on the increment of the shear capacity were the shear span/depth ratio and shear reinforcement ratio by CFS. The previous equations were compared with the result of the existing test data, and the merits and demerits of the existing equation were analyzed, using the coefficient of correlation(R) obtained by the regression analysis. The proposed equation was derived in such a way that main parameters and their combination were obtained from the analytical study and then their coefficients were determined by the regression analysis using the previous test data. As a result, the proposed equation showed the better agreement with existing test data than the previous equations.