Finite element analysis of cohesion between reinforced concrete beam and polymer lamella reinforced by carbon fibers

摘要

For analysis of bond between reinforced concrete beam and glued lamella reinforced by carbon fibers FEM was used in this paper. First four-point flexural reinforced concrete beam with steel stiffener was analyzed and then effect of bonded lamella was considered. Lamella was bonded using a high-strength epoxy glue in the milled slot at the bottom of the beam. The incremental loading on top of the beam was applied. The analysis was performed in ANSYS Mechanical APDL and MSC MARC software. Numerical results was compared with experimental results for deflection and von Mises stress for reinforced concrete beam with bonded lamella and without her. The results obtained show that the use of the composite lamella changes the distribution of stresses in the concrete and the steel reinforcement. This is reflected in the reduction of maximum tensile stress in the concrete and the reinforcement of concrete.