5Lu Z, ChenY. Numerical simulation and research on hysteretic model for concrete-filled square steel tube bemn-columns considering local buckling [ J ]. Steel Structures,2002, (2) :41 - 50.
6Varma A H, Ricles JM, Sause R, et al. Seismic behavior and modeling of high - strength composite concrete filled steel tube (CFT) beam-columns [ J]. Journal of Constructional Steel Research, 2002, 58 (5 - 8) :725 - 758.