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对4个构件进行了低周反向反复荷载作用下的数值分析,对现浇空心楼盖板柱增强节点的荷载-位移滞回曲线、骨架曲线、耗能能力和刚度退化进行了系统的分析研究。结果表明:沿着板长边布置空心管能够承受更大的承载力,滞回曲线更为饱满,刚度退化缓慢,说明沿板长边布置空心管的受力性能和抗震性能均比沿垂直板长边布置空心管好;在板柱节点添加型钢剪力架能显著提高构件的承载力,但是耗能能力降低;配置弯起钢筋对提高板柱节点抗震性能的作用不明显。
The numerical analysis of four members subjected to low reverse reversed loading is carried out. The load-displacement hysteresis curve, the skeleton curve, the energy dissipation capacity and the stiffness degradation of the reinforced-site of the slab-slab column are analyzed systematically the study. The results show that the hollow tube can bear larger bearing capacity along the long side of the plate, the hysteresis curve is more full and the stiffness degenerates slowly, which shows that the mechanical properties and the seismic performance of the hollow tube along the long side of the plate are lower than that of the hollow plate along the vertical plate Longitudinal edge arrangement of hollow tube is good. Addition of steel shear frame at column node can significantly improve the bearing capacity of members, but the energy dissipation ability is reduced. The effect of bending steel reinforcement on improving the seismic performance of slab-column joints is not obvious.