Numerical Investigation on Improving Over-Reinforced Concrete Beams Failure Mode

This numerical study presents a Finite Element Modeling (FEM) for over-reinforced concrete beams. There are various methods used to improve the flexural behavior of over-reinforced concrete beams, one of these methods is confinement in a compression zone. Which was used in this study using rectangular ties and steel wire meshes as internal jackets. Based on the verification of two previous studies, take one from them as a guide. The study included a parametric analysis of 10 beams, aiming to capture the effect of confinement, focusing on the rectangular ties with varied depths, steel wire meshes with varied depths, and lengths, and more than one layer of the jacket. Deflection (∆), ductility (D), and loads were calculated to compare the beams. According to the results, the ductility increased by 37-66%, 6-25%, 6-22%, and 6-51%, respectively, of their values to beam B0 when the depth of rectangular ties, depth of steel wire mesh, length of steel wire mesh, and layers of wire mesh were changed. In addition to improving each specimen's deflection load and fracture patterns.