Verification of Composite Beam Theory with Finite Element Model for Pretensioned Concrete Members with Prestressing FRP Tendons

Composite beam theory was previously developed to establish an analytical solution for determining the transfer length of prestressed fiber-reinforced polymers (FRP) tendons in pretensioned concrete members. In present study, a novel finite element (FE) modeling approach is proposed provide further verification method. The FE model takes into account friction coefficients obtained from pull-out tests on FRP and Convergence analysis two numerical simulations with different mesh densities carried out as well. results demonstrated that predicted by fine coefficient α = 0.3 high pretension good agreement measured values solutions. consistency between simulation not only proves reliability composite but also demonstrates importance bond–slip relationship predicting members tendons.