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双T形新型约束屈曲支撑是一种新型耗能支撑,影响其性能的因素众多。为了考察约束机构、约束比、内核板件宽厚比和内核切割方式等构造因素对其耗能性能的影响,对6个缩尺的双T形新型约束屈曲支撑模型进行低周往复荷载试验,研究支撑结构的破坏形态、滞回性能、耗能能力、位移延性和刚度退化等性能。试验研究表明:该新型支撑的约束机构和内核单元连接可靠;在所考察的因素中,约束机构和约束比的影响较大;具有合理构造的双T形新型支撑滞回圈饱满、耗能稳定、延性较好、屈服后刚度退化较慢。
Double T-shaped new constraint buckling support is a new energy-consuming support, many factors affect its performance. In order to investigate the effect of restraining mechanism, restraining ratio, aspect ratio of kernel plate and cutting mode of core on its energy dissipation performance, a low-scale cyclic loading test was carried out on a 6-foot double T- The failure mode of support structure, hysteretic performance, energy dissipation capacity, displacement ductility and stiffness degradation. The experimental results show that the restraint mechanism of this new type of support is connected with the core unit reliably. Among the investigated factors, the constraint mechanism and restraint ratio have a great influence. The new double T-shaped support hysteresis loop with a reasonable structure is full and the energy consumption is stable , Ductility is better, the stiffness degradation after yield slower.