ABSTRACT
Concrete filled steel tubular (CFST) columns are well known for excellent structural behavior and have been widely used in building structures, especially in high-rise and super high-rise buildings. However, the seismic performance of the steel reinforced concrete (SRC) beams to inclined circular CFST columns connection under cyclic loads was rarely studied before. This paper presents experimental and numerical study on the seismic performance of the connection. Based on the cyclic loading test results, with good ductility and energy dissipation capacity, the tested connection encased by the SRC ring beam showed good seismic performance and satisfied the principle of “strong column & weak beam” and “strong joint & weak member” in seismic design. Finite element model was developed to verify the ultimate strength and hysteretic damage of the connection, and the stress distribution was illustrated accordingly.
