中文摘要：

提出一种适用于装配式钢结构的带Z字形悬臂梁段拼接的梁柱节点。以滑移耗能的理念设计了基础试件，通过关键参数的变化得到六组试件。对六组试件进行了低周往复荷载作用下的试验研究，对节点的破坏模式和拼接区的滑移情况进行了分析，获得了节点的滞回曲线、骨架曲线、耗能能力、转动能力以及刚度退化等抗震性能。结果表明：带Z字形悬臂梁段拼接的梁柱节点属于半刚性连接节点，节点变形性能良好。节点能有效利用拼接区摩擦面滑移、螺栓和孔壁挤压以及板件屈服实现耗能。适当减少翼缘高强螺栓数目能有效提高节点延性性能和塑性转动能力。翼缘和腹板螺孔开大孔和使用三角形垂直加劲肋对节点的耗能能力和承载能力影响很小。

英文摘要：

A kind of prefabricated steel-frame-joint with a Z-shaped cantilever beam splicing is presented. The basic specimen is designed by the base of slip energy dissipation, and six specimens are obtained by changing the key parameters. The low-reversed loading tests of six such specimens are conducted. The joint failure modes and splicing slippages are analyzed; the hysteresis curves, skeleton curves, energy dissipation capacity, rotational capacity and stiffness degradation of the joint are obtained. The results show that the connection with a Z-shaped cantilever-beam splicing is a semi-rigid connection, and that the deformation performance of the connection is good. The joint can utilize the frictional slipping of a splicing, and the bearing of bolts to the hole-surfaces and plates can dissipate energy effectively. The appropriate reduction of the number of flange high-strength bolts can improve the ductility performance and plastic rotation capacity of joints. The oversized bolt holes are used instead of standard bolt holes and the triangular vertical stiffeners are used instead of internal diaphragms which have little impact on the energy dissipation capacity and carrying capacity of the joint.