钢筋混凝土与型钢混凝土分体柱的滞回性能试验研究

进行了8个试件的滞回性能试验研究,其中包括2个钢筋混凝土超短柱、2个型钢混凝土超短柱、2个钢筋混凝土分体柱和2个型钢混凝土分体柱;超短柱的剪跨比都为1,而分体柱的剪跨比都为3.试验结果表明,型钢混凝土超短柱的破坏模式为粘结破坏,因此与钢筋超短柱相比,构件的承载力、延性和变形能力并无显著提高.与超短柱相比,钢筋混凝土与型钢混凝土分体柱的延性和变形能力明显提高.随轴压比的提高,钢筋混凝土与型钢混凝土分体柱的延性与变形能力降低.相同轴力水平下,型钢混凝土分体柱的承载力、延性和变形能力明显优于钢筋混凝土分体柱.

Hysteretic behavior of reinforced concrete and steel reinforced concrete separated columns

The hysteretic behavior of 8 specimens including 2 reinforced concrete(RC) ultra short columns,2 steel reinforced concrete(SRC) ultra short columns,2 separated RC columns and 2 separated SRC columns have been studied.The shear span to depth ratios of ultra short columns and separated columns are 1 and 3 respectively.The test results show that the failure mode of SRC ultra short columns is bond failure;and the shear strength,ductility and deformation ability of SRC ultra short columns are not evidently higher than that of RC ultra short columns.The ductility and deformation ability of separated RC and SRC columns are evidently higher than that of RC and SRC ultra short columns.The ductility and deformation ability of separated RC and SRC columns decrease with increase in axial load ratio.The strength,ductility and deformation ability of SRC separated columns are higher than that of RC separated columns under the same axial load level.