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在17个型钢再生混凝土组合柱低周反复荷载试验研究的基础上,结合型钢再生混凝土组合柱试验位移延性系数和极限角变形,给出了满足型钢再生混凝土组合柱抗震延性要求的轴压比限值。采用大小偏心受压界限破坏理论推导了发生弯曲破坏时型钢再生混凝土组合柱的标准轴压比计算公式。在此基础上,结合抗震等级的要求,考虑体积配箍率、剪跨比对型钢再生混凝土组合柱抗震性能的影响,最终提出了不同剪跨比、不同配箍率以及不同抗震等级下型钢再生混凝土组合柱的轴压比限值。研究结果可为型钢再生混凝土组合柱的抗震设计提供参考依据。
Based on the experimental study of low profile cyclic loading of 17 profiled steel reinforced composite columns and the displacement ductility coefficient and ultimate angle deformation of recycled composite concrete columns, the axial compression ratio value. The eccentric compression limit theory of large and small was used to deduce the formula of the standard axial compression ratio of profiled steel reinforced concrete columns during bending failure. On this basis, combined with the requirements of the seismic rating, considering the influence of the volume ratio of the tie-in and the span ratio on the seismic performance of the SRC columns, the results of different ratio of shear span, different tie-in ratios and different seismic levels Axial pressure ratio limit of concrete composite columns. The results can provide a reference for the seismic design of steel-reinforced concrete composite columns.