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新型腹板开孔屈服耗能支撑具有良好的延性和耗能能力,将其应用于框架结构中,可提高框架的抗侧刚度,组成的支撑框架结构具有较好的耗能能力。采用ABAQUS有限元软件,研究了不同参数的耗能支撑与框架之间分别采用焊接连接和板铰连接组成的支撑框架结构的滞回性能。有限元分析结果表明:耗能支撑主要依靠端部工字钢开孔腹板的孔间板件弯曲屈服耗能,滞回曲线饱满。支撑框架耗散的能量随着耗能支撑耗散能量的增加而增加,加载前期,支撑框架主要由耗能支撑耗能。随着层间位移角的增大,梁柱部分进入塑性后,支撑耗能在结构中的耗能所占比例逐渐减小,孔间板件和柱脚翼缘进入塑性程度均增加。支撑端部采用焊接连接方式或板铰连接方式对支撑及框架的滞回性能影响不显著,板铰连接方式下支撑框架的承载力略高。

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