Numerical study on the flexural behaviour of normal- and high-strength concrete beams reinforced with GFRP bar, using different amounts of transverse reinforcement

This study was numerically focused on the non-linear behaviour of glass fibre reinforced polymer (GFRP) concrete beams with different amounts transverse reinforcement. The mid-span deflection beam cannot effectively be restricted using higher amount flexural GFRP bars, owing to their low deformability factor. So, use high reinforcement ratio is proposed decrease and crack widths. Following this, effect required carefully assess better understand beams. main goal this evaluate deflection, stress distribution failure mechanism normal- high-strength ratios (GFRP bar) finite element (FE) analysis. results revealed a fair agreement between developed FE models experimental Besides, mean value experimental-to-predicted load 0.96, average coefficient variation 2.69 %. Moreover, truss action generated diagonal compression in cracked tension reinforcement, resulted decreasing deflection. In addition, for all specimens without highest intensities were observed bottom component at service load. However, by increasing from ultimate, caused propagate some parts near sides component. Furthermore, presence distributing intensity normal-strength more than that either or ultimate