【摘要】 本文通过33根不同剪跨比试件的试验,对钢骨高强混凝土短柱的延性进行了研究,分析了短柱的主要破坏特征,分析了配箍率、轴压力系数、含钢率对钢骨高强混凝土短柱延性的影响,并得出了影响因素和延性间的关系曲线。由于现行国家规范中没有规定钢骨高强混凝土短柱的轴压力系数限值,本文根据试验结果,提出了不同剪跨比的钢骨高强混凝土短柱满足一定延性要求的轴压力系数限值,试验结果可为规范的修改和工程设计提供参考。更多还原

【Abstract】 The experimental research on displacement ductility are carried out through 33 steel reinforced high strength concrete short columns. The main factors such as axial compression ratio, stirrup ratio and steel ratio, which affect the ductility of steel reinforced high strength concrete short columns, are analyzed. The failure characters of steel reinforced high strength concrete short columns are also studied. Some results are obtained through the test. From the interrelated curves between ductility and stirrup ratio,it is known that the ductility of steel reinforced high strength concrete short columns increases with the increase of stirrup ratio. But when the stirrup ratio is raised to a certain value, the ductility increases slowly with the increase of stirrup ratio. The interrelated curves between ductility and axial compression ratio shows that the ductility of steel reinforced high strength concrete short columns increases while the axial compression ratio decreases. The interrelated curves between ductility and steel ratio shows that the ductility of steel reinforced high strength concrete short columns increases with the increase of steel ratio. Finally based on these test results,the limit values of axial compression ratio of steel reinforced high strength concrete short columns are put forward, which satisfy a certain requirement of ductility.更多还原