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为研究不同配钢形式的型钢混凝土(SRC)异形柱框架的抗震性能,对两榀框架模型进行低周反复加载试验,获得其破坏形态,分析其滞回曲线、骨架曲线、承载力、延性、耗能能力、刚度及累积损伤等特性。结果表明:SRC异形柱框架破坏时形成梁铰机制,符合“强柱弱梁”的抗震设计要求;与空腹式配钢相比,实腹式配钢的SRC异形柱框架抗震性能更为优越,承载力、延性和弹性刚度均显著提高,抗倒塌能力和耗能能力增强,但刚度退化和累积损伤却略微严重。
In order to study the anti-seismic performance of SRC special-shaped column frame with different steel distribution, the low-cycle repeated loading test was carried out on the two-tiered frame model to obtain its failure morphology. The hysteresis curve, the skeleton curve, the bearing capacity, the ductility, Energy capacity, stiffness and cumulative damage and other characteristics. The results show that SRC special-shaped column frame with beam-hinge mechanism breaks down, which is in line with the seismic design requirements of “strong column and weak beam” The superiority, bearing capacity, ductility and elastic stiffness were significantly improved, anti-collapse ability and energy dissipation capacity increased, but the stiffness degradation and cumulative damage were slightly serious.