Unsafe design and detailing of the beamcolumn joint jeopardizes the entire structure, even if
other structural members fit into the design requirements.
A study is conducted considering the importance of joint
shear failure which influences strength, ductility, and
stability of RC moment-resisting frames, an exterior
beam-column joint is modeled considering finite element
(FE) using ABAQUS software. Four models MODEL 1 as
per IS 13920:1993 provisions, MODEL 2 & MODEL 3 as
per IS 13920:1993 provisions with a curtailment of
bottom longitudinal rebar in the beam at joint face and
MODEL 4 with modification of MODEL 2 by providing
extra fillet section of 50*50 mm at the bottom face of the
beam-column joint are considered. 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 a steelconcrete bond are used. To define the nonlinear behavior
of concrete material, the concrete damage plasticity is
applied to the numerical model as a distributed plasticity
over the whole geometry. It was concluded that the
ultimate load-carrying capacity of MODEL 1 is 7.5%
more than MODEL 2, 15% more than MODEL 3, and
3% more than MODEL 4.
Keywords : Beam-Column Joint, Abaqus, Concrete Damage Plasticity, Crack Pattern.