Uses ABAQUS finite element software to analyze the nonlinear force performance of exposed rig-id-connected box column joints for RC frame-steel structure adding story hybrid structure.On the basis of verifying the correctness of the finite element model,the influence of relevant parameters on the seismic performance of exposed rigid-connected box column joints is conducted in depth,and design suggestions are put forward.The results show that the exposed rigid-connected box column mixed joint is damaged by the plastic hinge failure of the beam,which has strong energy dissipation capacity and plastic deformation capacity,but the stiffness degradation is more serious.Reasonable design suggestions are put forward ac-cording to the relevant parameters researches:the upper steel column should be box-shaped or cross-sec-tion columns with in-plane and out-of-plane stability as much as possible.In the view of the specimens studied in the paper,it is reasonable to control the axial compression ratio between 0.16 and 0.40.
adding story hybrid structureexposed rigid-connectedmixed jointenergy dissipation capaci-tyseismic performance
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