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为了研究钢板-砖砌体组合框架的抗震性能,制作了2榀缩尺比例为1∶2的单层单跨组合框架,考虑竖向压应力水平分别为0.1和0.2,进行低周往复荷载试验。根据试验结果,分析其破坏特征,研究其滞回曲线、骨架曲线、承载力、承载力退化、刚度退化、延性和耗能能力等受力性能。结果表明:钢板-砖砌体组合框架的破坏特征主要表现为梁端与柱脚处钢板的局部屈曲、焊缝撕裂与砖砌体压碎;竖向压应力水平在0.2以下时,其对钢板-砖砌体组合框架的刚度退化、承载力尚未构成显著影响,但已经对承载力退化、延性与耗能能力产生较明显的影响;钢板-砖砌体组合框架屈服后延性好,滞回曲线饱满,具有较好的抗震耗能能力。
In order to study the seismic performance of steel-brick masonry composite frame, a single-span single-span composite frame with 2 榀 scale ratio of 1: 2 was fabricated. Considering the vertical compressive stress levels were 0.1 and 0.2, . According to the test results, the failure characteristics are analyzed, and the hysteresis curves, skeleton curves, bearing capacity, bearing capacity degradation, stiffness degradation, ductility and energy dissipation capacity are studied. The results show that the failure characteristics of the steel-brick masonry frame are mainly the local buckling of the steel plate at the beam end and the column foot, the tear of the weld and the crushing of the brickwork. When the vertical compressive stress level is below 0.2, The stiffness degradation and bearing capacity of steel-brick masonry composite frame have not yet had a significant effect, but have a significant impact on the bearing capacity degradation, ductility and energy dissipation capacity; ductility of steel-brick masonry composite frame after yielding is good, Curve full, with good seismic energy consumption.