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为了研究多高层装配式钢框架结构体系方钢管柱采用钢板攻丝高强螺栓法兰连接节点的受力性能,进行了钢柱法兰连接节点的足尺模型静力和拟静力试验,分析了这类节点的承载力、失效模式以及在单向水平地震作用下的滞回性能。试验研究表明:试件在静力试验中表现出较强的承载能力,失效模式为短柱受压侧屈服;试件在拟静力试验中得到的滞回曲线比较饱满,试件延性较好,耗能性能优良,失效模式为短柱受压屈服。对这类钢柱法兰节点的受力性能进行了有限元数值模拟分析,数值模拟结果与试验结果吻合较好。通过比较节点刚接模型及栓接模型的有限元分析结果,从设计角度考虑,认为该类节点在实际工程应用中可视为等效刚性连接。
In order to study the mechanical behavior of square steel column with multi-high-rise assembly steel frame structure system using steel plate tapping high strength bolts flange connection, the full-scale model static and quasi-static tests of steel flange connections were carried out. Bearing capacity of such nodes, failure mode and hysteretic behavior under horizontal unidirectional earthquake. The experimental results show that the specimens show strong bearing capacity in static test and the failure mode is yielding on the compression side of the short columns. The hysteresis curves obtained in the quasi-static tests are quite full and the ductility of the specimens is good , Excellent energy performance, failure mode for the short column pressure to yield. The finite element numerical simulation of the mechanical behavior of such flange joints is carried out. The numerical simulation results are in good agreement with the experimental results. By comparing the results of the finite element analysis of the rigid connection model and the bolted model, considering the design point of view, this kind of node can be considered as an equivalent rigid connection in practical engineering applications.