[2063] FINITE ELEMENT ANALYSIS ON THE CONCRETE BREAKOUT CAPACITY OF HEADED REINFORCEMENT BAR EMBEDDED IN L-SHAPED BEAM-COLUMN JOINTS
Keywords:finite element analysis、headed bar、concrete breakout strength、beam-column joint
A nonlinear finite element model is developed to analyze the concrete breakout strength of the headed reinforcement bar embedded in roof exterior beam-column joints under pullout loading. The threedimensional FE models were established using FINAL software and validated against the experimental results of beam-column joint specimens found in the literature. The proposed FE models closely predicted the behavior of the beam-column joint specimens in terms of pullout load capacity, failure mechanism, crack pattern, and strain at the reinforcing bars.