Nonlinear Finite Element Analysis of High-strength Reinforced Concrete Beams with Severely Disturbed Regions

The inclusion of D-regions within a reinforced-concrete member may affect largely the general behavior structure. Different techniques and approaches were proposed to control behaviour D-regions, such as shear-friction approach STM model. Such proposals not be applicable for all types Dregions. current work presents nonlinear finite element model using ANSYS software, that is adopted study three which are dapped ends, deep beams with openings loaded openings. results revealed FE predicted adequately effects in RC beams. It found reducing hanger or nib reinforcement end by 25% resulted capacity 15% 32%, respectively. Also, showed these deficiently reinforced a/d ratio from 1.5 0.75 improved 23% 36%. For shearreinforced flanged beams, it was large shear span drop (41-49) %. An enhancement obtained when stirrups 12mm on both sides Moreover, confirmed optimum location under diagonal path. Furthermore, has been concluded openings, use T-rolled sections bottom chord opening yielded an relative rhombus-shaped configuration. KEYWORDS: Dapped T-deep Loaded Hanger reinforcement.