Comparison of flexural performance of reinforced concrete beams reinforced with steel plates and corrugated steel plates

To explore the mechanical properties of reinforced concrete beams reinforced by steel plates of various shapes, reinforced concrete beams reinforced with steel plates and corrugated steel plates were tested via a two-point loading test. Based on tests, further investigations investigated the deflection of the sample under different loads and the influence of corrugated steel plate properties (thickness, wave height, strength) on the flexural capacity of the reinforced beam, culminating in the development of corresponding numerical models. The findings indicate that the corrugated steel plate has the best reinforcing effect. In contrast to reinforcement utilizing steel plates containing an equivalent quantity of steel material, the corrugated steel plate augments the space within the reinforced beam and the lower shaft region, enhancing the efficiency of the upper compressive steel reinforcement and concrete in bearing loads, bolstering overall load-bearing potential, and exhibiting superior resistance to deformation. To maintain the ductility of the specimen, interface failure must be prevented. Too high wave height will affect the coordination of wave thickness and strength and inhibit the improvement of flexural performance. Therefore, reinforcement design should prioritize wave height determination.