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为了研究混凝土板组合效应对蜂窝梁柱连接抗震性能的影响,对无混凝土板和有混凝土板的正六边形蜂窝梁柱连接、普通组合梁柱连接进行拟静力试验。研究混凝土板组合效应对不同开孔率的蜂窝梁柱连接的破坏形态、承载能力、刚度、延性及耗能能力的影响。试验结果表明:蜂窝梁柱连接可以有效地控制塑性铰在近柱端第一个蜂窝孔处形成,实现塑性铰外移,降低在梁柱连接焊缝处发生脆性破坏的可能性;混凝土板的组合效应可以减小蜂窝梁剪切变形的影响,与无混凝土板的蜂窝梁柱连接相比,有混凝土板的蜂窝梁柱连接的滞回曲线更饱满;混凝土板的组合效应能够提高蜂窝梁柱连接的承载能力、延性、刚度及耗能性能,开孔率越大,组合效应越显著;混凝土板组合效应降低了塑性铰区的转动能力。
In order to study the effect of the combined effects of concrete slabs on the seismic performance of honeycomb beam-column connections, pseudo-static tests were carried out on the joints of regular hexagonal honeycomb beam-columns without concrete slabs and with concrete slabs and ordinary composite beam-column connections. The effect of the combined effect of concrete slabs on the failure morphology, bearing capacity, stiffness, ductility, and energy dissipation capacity of cellular beam-column connections with different open porosity was investigated. The test results show that the honeycomb beam-column connection can effectively control the formation of the plastic hinge at the first honeycomb hole at the near-column end, realize the plastic hinge relocation, and reduce the possibility of brittle fracture at the joint weld of the beam and the column; The combined effect can reduce the effect of shear deformation of the honeycomb beam. The hysteresis curve of the honeycomb beam-column connection with concrete slab is more full than that of honeycomb beam-column connection without concrete slab; the combined effect of the concrete slab can improve the honeycomb beam column. The bearing capacity, ductility, stiffness, and energy dissipation performance of the joints, the greater the opening ratio, the more significant the combined effect; the combined effect of the concrete slabs reduces the rotational ability of the plastic hinge area.