Abstract
Advanced carbon fiber reinforced polymer material (CFRP) has been widely used for strengthening structures. This paper aims to improve the ultimate capacity and stiffness of the composite beam externally strengthened with pre-stressed carbon fiber reinforced polymer plate by using CFRP tendons. The models were presented by 3-D FEM (finite element model) using ANSYS program to investigate the performance of composite beam which validated with experimental results presented. Various parametric studies achieved as degree of pre-stress level of CFRP tendons, tendon profile, degree of shear connection, the most effective beam load level to add CFRP tendons. Finally, the optimum strengthening conditions for the composite beam were studied.
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