【摘要】 柱体是框架结构中主要的抗震耗能结构，基于试验系统讨论了不同剪跨比和含钢率三榀单层单跨型钢超高强混凝土柱抗震性能，试验研究内容包括滞回曲线、骨架曲线、位移延性系数、割线刚度退化和耗能能力.研究结果表明，剪跨比越小，初始割线刚度越大，但当结构出现破坏后，割线刚度退化加速.在相同剪跨比下，柱体含钢率提高近100%,其耗能能力提高近20%.更多还原

【Abstract】 Columns are the main seismic energy dissipation structures in the frame structures. The seismic performance of three single-story single-span ultra-high strength concrete columns with section steel under different shear span ratios and steel ratios is discussed based on the experimental system. The experimental research contents include hysteretic curves, skeleton curves, displacement ductility coefficient, secant stiffness degradation and energy dissipation capacity. The research results show that the smaller the shear span ratio is, the greater the initial secant stiffness is, but when the structure fails, the secant stiffness degradation becomes more rapid. Under the same shear span ratio, the steel ratio of the column increases by nearly 100%, its energy dissipation capacity increases by nearly 20%.更多还原