Analytical Study of Geometric Parameter Effect on the Behavior of Horizontally Curved Reinforced Concrete Deep Beam

Nonlinear finite element simulation was once employed to look into the behavior of horizontally curved reinforced concrete deep beams under concentrated load at its mid-span. The study focused on parametric impact span length-to-depth (L/D) and length-to-radius (L/R) ratios. In addition, effect longitudinal spacing shear reinforcement beam has been investigated. considered sixteen specimens. Three these specimens were straight as a control, others beams. concrete-damaged plasticity model used with C-25 grade steel reinforcements having diameters ∅ 4 mm, 10 12 mm 568 MPa, 596 643 MPa grade, respectively. Reduced twenty-noded brick (C3D20 R) two-noded (T3D2) elements have for modeling steel, ultimate capacity, strain distribution, load-deflection curve, load-twisting curve are main outputs FE simulation. confirmed considerable decrease in load-carrying capacity by up 8.74% 27.95% ratio increased from 0 1.57 L/D 2.4 3, However, 0.02042 0.02608 decreased 100 50 is 9.28% 4.3%, Sensitivity evaluation also conducted see how much independent variables (L/D ratio, L/R bar transverse reinforcement) affect dependent parameter (ultimate capacity).