耗能型钢连梁抗震性能试验研究

Experimental study on seismic behavior of energy-dissipation steel coupling beams

提出了一种耗能型装配式钢结构连梁,对跨高比31、腹板厚度不同的2个连梁试件进行拟静力试验以研究其抗震性能,发现了端部撕裂和耗能腹板塑性屈曲两种破坏模式,继而对不同跨高比、不同腹板材料的另外2个耗能型装配式钢结构连梁进行了滞回过程数值试验研究,其试验结果可为该类连梁在高烈度设防地区的应用提供参考。

An energy-consuming assembled steel coupling beam was proposed,and two beam specimens with different web thickness and a span-to-height ratio of three to one were subjected to quasi-static tests to study their seismic performance.Two failure modes,end tearing and energy-consuming web plastic buckling,were discovered.Then two other energy-consuming assembled steel structure beams with different span-to-height ratios and web materials were studied through numerical hysteresis process tests.The experimental results provide a reference for the application of this type of beam in high-intensity seismic areas.