Analytical Study on Shear Strength of Ultra High Strength Concrete Beam-Column Joints Containing Steel Fiber

摘要

Three-dimensional finite element method (FEM) analysis was performed using the steel fiber andrnbeam width as variables on beam-column joints composed of ultra high strength concreterncontaining steel fiber (Fc150). Adding steel fiber to concrete improves the effective width and thernshear strength of a beam-column joint based on the AIJ Design Guidelines [9] for EarthquakernResistant Reinforced Concrete Buildings Based on Inelastic Displacement Concept as well as thernshear resistance of the beam-column joint. Moreover, adding steel fiber changes the stressrndistribution at the critical cross-section of the beam and reduces the proportion of shear forcernapplied to the joint by the bond force of the main beam reinforcement.