【摘要】 提出一种新型摩擦阻尼器,利用理想弹塑性模型模拟阻尼器的恢复力特性.通过对设置该摩擦阻尼器的耗能减震框架在3条地震波作用下进行时程分析,研究摩擦阻尼器起滑荷载对结构减震性能的影响.结果表明:减震结构在小震与大震作用下的位移反应均比未设置减震装置结构大幅减小;在小震作用下,减震结构的楼层剪力与摩擦阻尼器的起滑荷载有关;在大震作用下,减震结构层间位移角随着阻尼器起滑荷载的增加而减小.更多还原

【Abstract】 A new type of friction damper device(FDD) was proposed,and the ideal elasto-plastic model was used to simulate the hysteretic characteristics of the FDD.The frame structure with the FDD was analyzed by the time history method under three kinds of earthquake waves.The initial slip force of the FDD was discussed.It′s shown that the displacement response of structures with damper device is significant less than the ones without damper device;the storey shear force of the damper-added structures is relative to the initial slip force of the FDD under small earthquakes;with the increase of the initial slip force of the FDD,the story drift angle of the damper-added structures decrease under strong earthquakes.更多还原