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第 20 卷第 3 期甘肃科学学报 Vol. 20 No. 3

2008 年 9 月 Journal of Gansu Sciences Sep. 2008
粘弹性阻尼器钢框架减震性能分析
孙玉萍, 王敏, 何晴光,王云
(兰州理工大学土木工程学院,甘肃兰州 730050)
摘要: 介绍了粘弹性阻尼器的设计过程,推导了基于振型分解反应谱法粘弹性阻尼器的设计方
法;检验2了2此方法的精确度及使用范围;分析了随粘弹性阻尼器附加刚度的增加,附加阻尼比的变化
规律;给出了粘弹性阻尼器储存刚度与层刚度的合理比值范围. 根据粘弹性阻尼器的力学特性,对一
设置粘弹性阻尼器的钢框架进行 ANSYS 模拟,并对纯框架结构和安装粘弹性阻尼器的框架结构在
罕遇地震下的响应进行对比分析. 结果表明:设置粘弹性阻尼器后,结构的地震响应明显降低.
关键词: 粘弹性阻尼器;振型分解反应谱法;地震响应;附加阻尼比
中图分类号: TU352. 1 文献标识码: A 文章编号:1004 0366 (2008) 03 0126 04
A Seismic Analysis of Steel Frame with Viscoelastic Damper
SUN Yu ping , WAN G Min , H E Qing guang , WAN G Yun
( College of Civil Engineering , L anz hou University of Science and Technology , L anz hou 730050 , China)
Abstract : A design process and t he design met hod for viscoelastic dampers (V EDS) were in troduced on
t he basis of response spectrum method. It s accuracy and application range were tested. The law of change
of additional damping ratio was st udied wit h t he increase of additional stiff ness , and t he reasonable range
of t he ratio between storage stiffness of viscoelastic damper and storey stiff ness was given. According to
mechanical property of V EDS , a steel frame wit h V EDS was simulated. The responses of the struct ure
without V EDS and with V EDS were analyzed , pared under seldom eart hquake actions. The result s
indicated that it s seismic response