A refined finite element model was established to analyze the seismic behavior of concrete-filled precast concrete tube column to steel beam connections with different strengthening forms.The influence of dif-ferent strengthening forms on the seismic behavior and bearing capacity of the joints was studied.The effects of axial compression ratio,steel beam flange reinforcement width and reinforcement length on the bearing capacity of the joints were studied using parametric analysis of the finite element model.The analysis results indicated that with the increasing of axial compression ratio,the peak load increased less than 4％,and the effect of axial compression ratio on the bearing capacity of the joints was relatively small.The peak bearing capacity of the joints with strengthened beam width increased by about 20％.When the strengthened width of the flange of the steel beam was more than 75mm,the increase of strengthened beam width produced little effect on the peak bearing capacity of the joints.The reinforcement length of the steel beam flange had limited effect on the peak bearing capacity of the joints.The recommended reinforcement length is about 1.7 times the width of the flange.
Prefabricated hybrid structureBeam-to-column jointSeismic behaviorFinite element analysis
维普
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