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钢框架中梁柱的节点连接一直是钢结构抗震设计中难以处理的问题,在现行的钢框架结构设计中,通常把梁柱连接处理为完全刚接或理想铰接,但是在多数实际工程中,钢框架节点的性能处于刚接和铰接之间,即半刚性连接.利用SAP 2000分别建立了刚接和不同转动刚度的半刚性连接钢框架有限元分析模型,并进行了模态分析、反应谱分析以及循环荷载作用下的滞回性能分析.根据数据结果绘制层间剪力、层间位移和楼层位移曲线,探讨了节点刚度对整体钢框架结构抗震性能的影响,通过分析滞回曲线和骨架曲线来研究节点的耗能性能,以期为日后的钢框架设计提供一定参考.
The connection of beam and column in steel frame has always been a difficult problem in the seismic design of steel structures. In the current design of steel frame structure, the connection of beam and column is usually treated as completely rigid or ideal articulation. However, in most practical projects, The performance of the steel frame joints is between rigid and hinged joints, that is, semi-rigid joints.The finite element model of semi-rigid joined steel frames with rigid joints and different rotational stiffness is established respectively by SAP2000, and modal analysis, response spectrum Analysis and the analysis of hysteretic behavior under cyclic loading.According to the data results, the interlaminar shear force, interlaminar displacement and floor displacement curve are plotted, and the influence of joint stiffness on the seismic performance of the whole steel frame structure is discussed. By analyzing the hysteresis curve and the skeleton Curve to study the node energy consumption performance, in order to provide some reference for the future steel frame design.