机能分离型软钢阻尼器的性能

Performance of low-yield-strength steel shear panel damper with function separate

为了开发大变形以及高耗能能力的具有机能分离作用的软钢阻尼器,将连杆系统引入到阻尼器的设计中.通过准静态渐增往复加载的试验方法,研究了连杆系统的重要参数连杆强度和连杆系数对阻尼器性能的影响.由于阻尼器的性能取决于阻尼面板的变形能力,而变形能力则通过应变集中系数来反应.因此,借助图像处理技术来得到阻尼器核心部件剪切面板的整体应变,通过分析面板的应变集中系数来比较阻尼器的破坏严重程度.试验结果表明:足够的连杆强度以及较大的连杆系数,可有效的减小剪切面板的应变集中系数,有利于显著提高阻尼器的变形能力、增加阻尼器的耗能性能等.

To develop function separate dampers with large deformation and high energy absorption, the frame fixture was applied to design lowyieldstrength steel shear panel damper （LYSPD）. The effects of link strength and length of frame fixture on the performance of lowyieldstrength steel shear panel （LY SP） were investigated. The static hysteretic incremental experiments were used to determine the stress concentration factor of dampers. By image processing techniques, the shear strain of shear panel was em ployed to analyze the failure process of LYSP. The experimental results show that the frame fixture with e nough link strength and large link length can effectively reduce the strain concentration factor and markedly improve the deformation capacity and energy absorption of the damper.