The finite element( FE) models were developed to analyze the hysteretic relationship and dynamic time history of the concrete-filled steel tubular( CFST) structures based on nonlinear beam-column fiber element theory using OpenSees software. The numerical results are in good agreement with those of other experiments. The stress versus strain relationship of core concrete under confinement of the outside steel tubes was given and the material model of steel was simulated by kinematic hardening model. The shear force of fiber sections was simulated by defining the nonlinear shear restoring force in section level based on traditional fiber model. The presented model
which considered the shear effect
can effectively predict the maximum shear force
pinch effect and stiffness degradation of the composite shear walls. The analysis on the dynamic time history shows that the nonlinear fiber beam-column model can rationally and logically simulate the dynamic behavior of the CFST structures under different earthquake waves.