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为研究空心楼盖板柱节点抗震性能,在试验的基础上进行了3种节点在低周反复荷载下的数值模拟分析,对节点的破坏形式、滞回曲线、刚度退化和耗能能力等进行较为系统的研究。结果表明:平行布管方式,节点的抗震性能优于正交布管方式,正交布管方式,节点的抗震性能优于垂直布管方式;楼板钢筋和弯起钢筋对节点承载力、刚度、刚度退化和耗能能力等影响较大;型钢剪力架由于主要材料集中于截面中和轴,对提高板柱节点的受力和抗震性能效果不明显。建议工程应用中综合考虑多种方式,即采用增大柱上板带配筋率、配置弯起钢筋和型钢剪力架等方式提高板柱节点抗震性能,以实现多道抗震防线的设计要求。
In order to study the seismic behavior of the hollow-core column-to-column joints, numerical simulation analysis of the three kinds of joints under low cyclic loading was carried out on the basis of the experiments. The damage forms, hysteresis curves, stiffness degradation and energy dissipation capacity More systematic research. The results show that the anti-seismic performance of the joints is superior to that of the orthogonal pipe-laying method and the orthogonal pipe-laying method, and the seismic performance of the joints is better than that of the vertical pipe-laying method. For the bearing capacity, stiffness, Stiffness degeneration and energy dissipation capacity are more significant. Because the main material is concentrated on the neutral axis of the section, the effect on the stress and seismic performance of the slab node is not obvious. It is suggested that a variety of ways should be considered in engineering application, that is, increasing the seismic resistance of the column and column joints by increasing the reinforcement ratio of the column plate, configuring the bent steel bar and the steel shear frame to achieve the design requirements of the multi-channel seismic defense line.