以轴压比、含钢率和长细比为参数,进行了8根方钢管高强混凝土柱的低周反复荷载试验,研究分析了该类构件的滞回曲线、延性、刚度退化、耗能能力、破坏机理和破坏特征;并与型钢高强混凝土柱的受力性能进行了比较分析。研究表明,方钢管高强混凝土柱在施工、受力等方面都有较大的优越性,有进一步研究和推广应用的价值。 Taking the axial compression ratio, the steel ratio and the slenderness ratio as the parameters, the low-cycle cyclic loading tests of 8 square steel tube columns are carried out. The hysteresis curves, ductility, stiffness degradation, energy dissipation capacity , Failure mechanism and failure characteristics, and compared with those of steel reinforced high-strength concrete columns. The research shows that the square steel tube high strength concrete column has great superiority in construction and stress, which has the value of further research and popularization and application.