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应用ANSYS软件对深圳某高层钢-混凝土组合结构斜柱转换的钢管混凝土组合节点进行地震作用下的受力分析。根据节点的抗震性能化目标,采用恰当的材料本构关系,选取可能的节点最不利工况进行分析。得到计算分析的节点能够满足大震不屈服的抗震性能化目标;节点薄弱部分为杆件汇交的截面面积最小处,钢材的最大Mises应力出现在钢管的棱角部分,混凝土的最大主压应力则出现在钢梁的翼缘附近区域;钢梁在平衡节点弯矩的受力过程中起到有利作用,应对其适当加大。
ANSYS software was used to analyze the mechanical behavior of concrete-filled steel tubular (CFST) composite members converted from a tall steel-concrete composite structure in Shenzhen under earthquake action. According to the seismic performance of the node, the proper material constitutive relation is adopted to select the most unfavorable conditions of the possible nodes for analysis. The calculated nodes can satisfy the earthquake-resistant performance without yielding to large earthquakes. The weak part of the joint is the minimum cross-sectional area of the rod. The maximum Mises stress of the steel appears in the corner part of the steel pipe. The maximum principal compressive stress of the concrete Appears near the flange of the steel beam. The steel beam plays a beneficial role in the stress moment of the balance node and should be appropriately increased.