One of the repair methods for corroded steel tube is the CFRP bonded repair. However, the debonding of CFRP is one of the concerns about the CFRP bonded repair. To prevent the debonding of CFRP, the shear stress or energy release rate in the adhesive layer is applied to the design verification. A theoretical analysis of CFRP bonded steel tubes has been proposed to calculate these debonding parameters. However, no theoretical analysis of steel tubes partially bonded with CFRP is given. In this study, the shear-lag theory was applied to the steel tubes partially bonded with CFRP subjected to axial force or pure bending moment. Then, finite element analysis was performed to confirm the validity of the derived equations.
