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REINFORCED CONCRETE (RC) BEAM-COLUMN CONNECTIONS ESPECIALLY THOSE WITHOUT TRANSVERSE REINFORCEMENT IN JOINT REGION CAN EXHIBIT BRITTLE BEHAVIOR WHEN INTENSIVE DAMAGE IS CONCENTRATED IN THE JOINT REGION DURING AN EARTHQUAKE EVENT. BRITTLE BEHAVIOR IN THE JOINT REGION CAN COMPROMISE THE DUCTILE DESIGN PHILOSOPHY AND THE EXPECTED OVERALL PERFORMANCE OF STRUCTURE WHEN SUBJECTED TO SEIS-MIC LOADING. CONSIDERING THE IMPORTANCE OF JOINT SHEAR FAILURE INFLUENCES ON STRENGTH, DUCTILITY AND STABILITY OF RC MOMENT RESISTING FRAMES, A FINITE ELEMENT MODELING WHICH FOCUSES ON JOINT SHEAR BEHAVIOR IS PRESENTED IN THIS ARTICLE. NONLINEAR FINITE ELEMENT ANALYSIS (FEA) OF RC BEAM-COLUMN CONNECTIONS IS PERFORMED IN ORDER TO INVESTIGATE THE JOINT SHEAR FAILURE MODE IN TERMS OF JOINT SHEAR CAPACITY, DEFORMATIONS AND CRACKING PATTERN. A 3D FINITE ELEMENT MODEL CAPABLE OF APPROPRIATELY MODELING THE CONCRETE STRESS-STRAIN BEHAVIOR, TENSILE CRACKING AND COMPRESSIVE DAMAGE OF CONCRETE AND INDIRECT MODELING OF STEEL-CONCRETE BOND IS USED. IN ORDER TO DEFINE NONLINEAR BEHAVIOR OF CONCRETE MATERIAL, THE CON-CRETE DAMAGE PLASTICITY IS APPLIED TO THE NUMERICAL MODEL AS A DISTRIBUTED PLASTICITY OVER THE WHOLE GEOMETRY. FINITE ELEMENT MODEL IS THEN VERIFIED AGAINST EXPERIMENTAL RESULTS OF TWO NON-DUCTILE BEAM-COLUMN CONNECTIONS (ONE EXTERIOR AND ONE INTERIOR) WHICH ARE VULNERABLE TO JOINT SHEAR FAILURE. THE COMPARISON BE-TWEEN EXPERIMENTAL AND NUMERICAL RESULTS INDICATES THAT THE FE MODEL IS ABLE TO SIMULATE THE PERFORMANCE OF THE BEAM-COLUMN CONNECTIONS AND IS ABLE TO CAPTURE THE JOINT SHEAR FAILURE IN RC BEAM-COLUMN CONNECTIONS.

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode