【摘要】 为给山东单县某不等跨钢框架结构综合楼选择合理的抗震节点构造方案,参照《高层民用建筑钢结构技术规程》(JGJ 99—2015)中的相关规定,以该项目中不等跨梁与柱的连接节点为研究对象,利用ABAQUS软件建立了一个中柱两侧采用相等梁高的普通节点模型和两个中柱两侧采用不等梁高的异型节点模型(其一为梁柱直接连接,另一为加腋连接),分别对三种节点模型进行滞回性能与骨架曲线、延性及耗能性能分析。结果显示:加腋异型节点与普通节点的抗震性能基本相同,且优于直接连接异型节点;加腋异型节点的塑性铰位置有所外移。为此,建议该工程框架节点选用加腋异型节点构造方案。更多还原

【Abstract】 In order to select a reasonable seismic joint structure scheme for a unequal span steel frame in Shan County, Shandong Province, according to the relevant regulations in the Technical Regulations for High-Rise Civil Building Steel Structure(JGJ 99-2015), taking a unequal-span beam-column connection joint in the engineering as the research object, the ABAQUS software is used to establish an ordinary joint model with equal beam height on both sides of the middle column and two irregular joint models with unequal beam height on both sides of the middle column(the first one is the direct connection of beams and columns, the other is the twisting connection), and the hysteretic behavior, skeleton curve, ductility and energy dissipation performance of the three joint models are analyzed respectively. The results show that the seismic performance of the twisted shaped joint and the ordinary joint are basically the same, which is better than the seismic performance of the directly connected shaped joint, and the plastic hinge position of the twisted shaped joint is shifted outward. For this reason, it is suggested that the joints in the steel frame of the engineering adopt the twisted-shaped structure scheme.更多还原