At present, Concrete filled steel Tubular columns, called CFT columns, draw attention as a structural member of high seismic resistibility. While the application of CFT columns to the pier or pile increases, many studies focusing mainly on CFT column bodies are carried out. On the other hand, when CFT columns are used as a structural member of railway mixed structure, CFT column may not demonstrate a high seismic performance without an adequate bearing capacity of joint panels. In this paper, studying the bearing mechanism based on a series of tests of joint panels where CFT columns are directly embedded into the concrete footing and on a series of tests of RC or SRC beam-to-CFT column joint panels, the evaluation of the bearing capacity for these joint panels is worked out with simple models.
