Finite Element Analysis of the Effect of Basalt-Polypropylene Hybrid Fiber on the Performance of RPC Beam

In order to improve the mechanical properties and bending resistance of RPC concrete beams, the influence of RPC beams were analyzed by finite element analysis by adding basalt-polypropylene hybrid fibers and changing their fibers blending ratios. The results show that compared with the conventional RPC beam, the cracking load, mid-span deflection and maximum compressive stress of the hybrid fiber RPC beams are greatly improved in the initial cracking state; the cracking load and cross of the hybrid fiber RPC beams in the yield state medium deflection and maximum compressive stress of concrete do not change much. Through the finite element analysis and theoretical calculation, the calculation formula of the normal section flexural capacity of basalt-polypropylene hybrid fiber RPC beams is derived.