Abstract
Structural behaviors of concrete-filled square tubular steel column to steel H-beam connection with T-shaped inner reinforcement, which were intended to simplify the steel fabricating of connection and concrete-filling into the steel column, were studied by cruciform tensile test and beam-and-column subassemblage test subjected to earthquake loading. Stable and ductile hysteresis characteristics were obtained in the subassemblage test. The ultimate and Full plastic strengths of the connections were estimated approximately by applying the yield line theory considering the simple stress transfer mechanism of the connection.
