Finite element analysis of seismic performance of joints between concrete-filled steel tubular flat columns and H-beams
To avoid the projection of beam-column joints from the wall in the steel frame structure,this paper proposes a kind of joint between concrete-filled steel tubular flat column and H-beam.Finite element model of the joints with four different connection positions was established in ABAQUS software to analyze the failure mode and seismic performance of the joints under low-cyclic reversed loads.Finite element analysis results show that the proposed joints can achieve a rigid beam-column connection.All joints are subject to beam-hinged damage with good seismic performance and energy dissipation capacity.On this basis,the effects of axial compression ratio,thickness of vertical internal plate and beam-end configuration on the seismic per-formance of the joints were further investigated.The results show that the force applied on the column-end decreases with the increase of axial pressure ratio and the decrease of the thickness of vertical internal plate.The stress concentration effect at the joint can be effectively relieved by replacing the cover plate connection with the vertical stiffeners reinforced connection.
concrete-filled steel tubular flat columnsjoints between columns and beamsfinite ele-ment simulationseismic performanceparametric analysis
NETL
NSTL
万方数据
维普
