A consideration on thermal stress of steel members reinforced with CFRP

In this study, the amount of thermal stress occurring in a CFRP-reinforced steel member subjected to axial force is evaluated, and a method for easily determining the cross-sectional area requirements for CFRP used for reinforcement is proposed. Furthermore, how the fatigue life of CFRP-reinforced steel members is affected by atmospheric temperature changes is evaluated by using the proposed formula in the case where live loads may be deemed constant and the case where loads from overloaded vehicles act as in the case of a highway bridge.