fiber-reinforced plastic ribs;  concrete;  bending performance;  Numerical analysis

Based on experimental research, combined with the bending failure characteristics of fiber-reinforced plastic reinforced concrete beams, the numerical analysis method of the whole process of non-linear reinforced concrete beams of fiber-reinforced plastic reinforced concrete beams was discussed. By simplifying the stress-strain relationship curves of concrete in the compression zone and the tensile zone, the calculation mode of the curvature of the bending curve of the fiber-reinforced plastic reinforced concrete beam is established, and the simplified calculation formula of the curvature of the bending of the fiber-reinforced concrete beam and the corresponding load deflection are proposed. The simplified method, the nonlinear whole process numerical analysis method and the experimental data were compared and analyzed, and the three were in good agreement.