Mechanical Behaviour Research of Long Span Prestressed Steel–concrete Composite Beam

Abstract The deformation and stress distribution of concrete and section steel in the whole process of short span prestessed steel–concrete composite beam were analysed by finite element software (ANSYS) in this paper. The results fit well with the experimental value that the model can preferably reflect the real stress condition of the beam that was analysed with different reinforcement ratios, different span/depth ratios and different prestress degrees. In addition, the moment–deflection curves of long span prestressed steel–concrete composite beam were discussed with different reinforcement ratios. Moreover, a reasonable range for the beam is advised by considering its deformation law. Finally, some beneficial advices and conclusions were provided for the designer and referenced for further study.