A comprehensive study of the shear characteristics of steel fiber reinforced recycled concrete-filled steel tube (SRCFST) columns is conducted. 50 CFST stub columns are tested with the variables of steel tube diameter-thickness ratio (D/t), shear span-to-depth ratio (λ), axial compression ratio (n), and concrete mix. Two types of cements, three recycled aggregate percentages, three water-cement ratios, and three steel fiber contents are considered in design of concrete mixes. The experimental results show that SRCFST columns present the coincident shear behavior of the ordinary CFST columns. As λ is increased, shear resistance shows a downtrend, while the flexural strength presents an increasing trend. Imposing axial compression or thickening steel tube contributes to an adequate safety margin in plastic period. Based on the contributions superposition method, a predicted model of the shear capacity of SRCFST columns is proposed in consideration of shear-span ratio, axial compression, and self-stress.

对钢纤维增强再生钢管混凝土（SRCFST）柱的剪切特性进行了综合研究。用钢管直径-厚度比（D / t），剪切跨度-深度比（λ），轴向压缩比（n）和混凝土混合料。在混凝土混合料的设计中考虑了两种类型的水泥，三种再生骨料百分比，三种水灰比和三种钢纤维含量。实验结果表明，SRCFST色谱柱表现出与普通CFST色谱柱一致的剪切特性。随着λ的增加，抗剪强度呈下降趋势，而抗弯强度呈上升趋势。施加轴向压缩力或使钢管变厚有助于在塑化期间获得足够的安全裕度。基于贡献叠加法，提出了考虑剪跨比，轴向压缩和自应力的SRCFST柱抗剪承载力预测模型。