Forms and research progress on CFST column-steel beam joints
In concrete-filled steel tube(CFST)structure system,the stress state of column-beam joint is complicated.The joint is the key part of CFST structure system,which has an important influence on the bearing capacity,stiffness and stability of the structure.Comprehensive review of the research on CFST column-steel beam joints at home and abroad was provided,and the characteristics and existing research of various types of CFST column-steel beam joints,including internal reinforced joint,external reinforced joint,through-diaphragm joint,bolted joint and so on were introduced.The advantages and existing problem of all kinds of joints were summarized from the aspects of bearing capacity,stiffness,failure mode,seismic performance and design methods.The purpose is to provide reference for the research of CFST column-steel beam joints,and to further promote the research and engineering application of CFST column structure system.
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