To enhance the structural connectivity of prefabricated steel frame systems and augment their construction efficiency, this study introduces an innovative prefabricated joint design tailored for square steel columns and H-beams characterized by varying beam heights. This study includes both static loading tests and seismic tests performed on full-scale joints featuring two different beam heights. This investigation involved a comprehensive analysis of the static and seismic performance of the joints, employing various performance metrics such as ultimate load capacities, ultimate rotation angles, hysteresis curves, skeleton curves, stiffness degradation curves, and ductility coefficients, in alignment with established structural codes and standards. The results indicate that the plasticity of the H-beam is fully developed, exhibiting a relative slip phenomenon. Additionally, the joints demonstrate commendable rotational capacity, with hysteresis curves consistently manifesting an inverse S-shape and exhibiting noteworthy stiffness degradation. Furthermore, the comparison with the unimproved joint shows that the novel joint, in addition to being easy to construct, has better ductility and energy dissipation capacity. The results of the study will provide a technical reference for further optimization and application of prefabricated beam-column joints.

为了增强预制钢框架系统的结构连接性并提高其施工效率，本研究引入了一种针对不同梁高的方钢柱和 H 型钢量身定制的创新预制接头设计。这项研究包括对具有两种不同梁高度的全尺寸接头进行的静载试验和地震试验。这项研究涉及对接头的静态和抗震性能进行全面分析，采用各种性能指标，例如极限承载能力、极限旋转角度、滞后曲线、骨架曲线、刚度退化曲线和延性系数，与既定的结构规范保持一致和标准。结果表明，H型钢塑性充分发挥，呈现出相对滑移现象。此外，关节表现出值得称赞的旋转能力，滞后曲线始终呈现倒 S 形，并表现出显着的刚度下降。此外，与未改进节点的比较表明，新型节点除了易于施工外，还具有更好的延性和耗能能力。研究结果将为预制梁柱节点的进一步优化和应用提供技术参考。