不同参数下低屈服点钢剪切板耗能元件受力性能试验研究

低屈服点钢剪切板耗能元件具有良好的耗能能力，可以消耗输入结构中的大部分地震能量，改善和提高结构的抗震性能。为了考察面外初始缺陷对低屈服点钢剪切板耗能元件屈曲后稳定性的影响，开展了1个传统工字钢耗能元件和3个具有面外初始缺陷的低屈服点钢剪切板耗能元件的低周往复循环荷载试验，重点考察了面外初始缺陷、耗能元件宽厚比和钢筋混凝土约束板对其受力性能的影响。研究结果表明:面外初始缺陷对剪切板的受力性能影响较大，钢筋混凝土约束板可有效抑制剪切板的面外局部屈曲变形，翼缘板可有效抑制剪切板的整体扭转屈曲变形，从而提高剪切板耗能元件的耗能能力。

TEST STUDY ON MECHANICAL PROPERTIES OF SHEAR PANEL ENERGY-DISSIPATION COMPONENTS USING LOW YIELD POINT STEEL WITH DIFFERENT PARAMETERS

Shear panel energy-dissipation components using low yield point steel have a good energy-dissipation capacity, and the seismic property of structures using shear panel energy-dissipation components can be effectively improved. In order to investigate the influences of out-of-plane imperfection on the energy-dissipation capacity of shear panel energy-dissipation components, a traditional I-shape steel energy-dissipation component and three shear panel energy-dissipation components with out-of-plane imperfection were designed for the low cycle loading tests. The out-of-plane imperfection, the width of shear panel and the reinforced concrete constraint plates were the main parameters. Test results showed that the out-of-plane imperfection had significantly influences on the behavior of shear panel energy-dissipation components, and the reinforced concrete constraint plates effectively improved the energy-dissipation capacity of shear panel energy-dissipation components. The global buckling and local buckling of shear panel dampers could be effectively prevented by the flange plate and reinforced concrete constraint plates respectively.