The Hyogoken-Nanbu Earthquake having attacked the western part of Japan in 1995 damaged an enormous number of railway constructions such as reinforced concrete elevated bridges and steel bridges. Thereafter, concrete filled steel tubular columns, called CFT columns, draw attention as a structural member of high resistibility to the earthquake. While the application of CFT columns to the pier or pile increases in the civil engineering field, 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 mixed structure, CFT column may not demonstrate a high seismic performance without adequate earthquake resistibility of joint panels such as a Steel Reinforced Concrete beam-to-CFT column joint and a CFT column-to-basement joint. In this report, studying the bearing mechanism based on a series of tests of joint panels where CFT columns are directly embedded into footing and 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.