梁柱节点在钢框架结构中处于竖向荷载和水平荷载交汇关键部位，直接决定结构的受力性能和抗震能力。依托北京市档案馆新馆工程，根据工程需要和设计规范要求，对3个采用传统连接形式的钢框架梁柱节点，采取循坏加载的拟静力试验方法进行抗震性能研究，探讨了连接构造形式、冷作硬化效应和加载方案等对节点承载力、延性和破坏模式的影响。试验结果表明，传统连接形式节点具有承载力高、变形小、设计和施工简便的优点，但易发生脆性破坏；冷作硬化可以提高试件的承载力和变形能力，但不改变最终失效模式；加载方案对失效模式没有影响。%Beam⁃to⁃column connections, located at the intersection of vertical and horizontal loadings, directly determine the mechanical property and seismic performance of the steel frames. Relying on the engineering of Beijing New Archive and adhering to the engineering demands and design speculations, this paper conducted a seismic performance research on three traditionally connected beam⁃to⁃column connections of steel frames by adopting a pseudo⁃static ( cyclic loading ) method. Furthermore, this paper discussed the influence of connection and construction forms, strain hardening, and loading scheme on the connections’ bearing capacity, ductility and failure modes. As the results show, the traditional connections feature high bearing capacity, small deformation, convenient design and construction, and being liable to brittle failure; strain hardening can enhance the bearing capacity and deformation, but make no contribution to change the last⁃ply failure mode;loading scheme exerts no influence on the failure mode.
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