【摘要】 为研究菱形开洞的新型加劲软钢阻尼器的耗能减震性能,分析其构造形式和减震机理,并对六组阻尼器单片进行了循环加荷试验,给出了其恢复力模型;分别对整体刚度相同的装有加劲软钢阻尼装置和装有普通支撑的三层钢框架进行了振动台对比试验研究.结果表明,这种新型加劲软钢阻尼器具有稳定的滞回性能和抗疲劳性能,对结构的加速度和位移都有很好的控制作用,具有较好的减震效果.更多还原

【Abstract】 To explore the seismic dissipation ablitity of a new type of mild steel damper added damping and stiffness with a diamond shape hollow in-plane,the restoring force model of this damper was investigated by conducting the cyclic loading tests to six specimen groups. Two one-bay and three-story steel frames with equal elastic stiffress were designed and tested respectively on the shaking table. One of them was added with stiffness by the mild steel damping device,the other one was braced by ordinary bracing systems. Results show that the new type damper possesses the stable hysteretic capacity and fatigue resistance capacity,which can effectively control and reduce the acceleration and the displacement of a building.更多还原