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基于方钢管混凝土柱与H型钢梁外环肋节点的低周反复荷载试验,在合理选择材料本构关系、破坏准则的基础上,采用通用有限元软件ANSYS对该节点模型在循环加载作用下的受力性能进行非线性分析,对试件的试验和理论滞回曲线及骨架曲线进行对比研究。研究表明:该节点具有很好的延性和耗能能力,层间转角位移延性系数μ=3.07～3.66,弹性和弹塑性层间位移角分别为y=0.004 1～0.004 7、u=0.012 4～0.017 2,等效黏滞阻尼系数he=0.26～0.35,满足现行抗震规范要求,抗震性能良好。
Based on the low-cycle cyclic loading test of the outer ring rib joints of square steel tube columns and H-beam, based on the reasonable selection of material constitutive relations and failure criteria, the common finite element software ANSYS was used to simulate the node model under cyclic loading Force performance of non-linear analysis of the test specimens and theoretical hysteresis curves and skeleton curves were compared. The results show that the node has good ductility and energy dissipation capacity, the displacement ductility coefficient μ = 3.07 ~ 3.66, the displacement angle between elastic and elastoplastic layers are y = 0.004 1 ~ 0.004 7, u = 0.012 4 ~ 0.017 2, the equivalent viscous damping coefficient he = 0.26 ~ 0.35, to meet the requirements of the current seismic code, seismic performance is good.