摆式电涡流TMD-钢框架结构的耦合计算方法与减震分析  

Coupling calculation method and seismic analysis of pendulum eddy current TMD-steel frame structures

作　　者：潘毅[1,2] 包韵雷 国巍[3] 陈业宏 Pan Yi;Bao Yunlei;Guo Wei;Chen Yehong(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,P.R.China;Key Laboratory of Seismic Engineering of Sichuan Province,Southwest Jiaotong University,Chengdu 610031,P.R.China;School of Civil Engineering,Central South University,Changsha 410075,P.R.China;School of Civil Engineering,Tongji University,Shanghai 200092,P.R.China)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]西南交通大学抗震工程技术四川省重点实验室,成都610031 [3]中南大学土木工程学院,长沙410075 [4]同济大学土木工程学院,上海200092

出　　处：《土木与环境工程学报（中英文）》2020年第4期84-93,共10页Journal of Civil and Environmental Engineering

基　　金：国家重点研发计划(2016YFC0802205);四川省科技计划(2019YJ0222);科技部资助项目(KY201801005)。

摘　　要：摆式电涡流TMD作为一种新型阻尼器,多用于人致振动和风振控制,较少应用抗震工程,也缺乏较好的计算方法。为研究摆式电涡流TMD的减震性能及合理的质量比μm,根据摆式电涡流TMD的力学特性,提出一种基于联合仿真的耦合计算方法,根据现行建筑抗震设计规范,分别建立了5、10、20层钢框架结构模型,设计了5组不同μm的摆式电涡流TMD,并采用提出的耦合计算方法,对摆式电涡流TMD钢框架结构模型进行了动力时程分析,得到了罕遇地震作用下结构的层位移、层间位移角、层剪力和层加速度与μm的关系曲线,并与无TMD结构的地震响应进行了对比。研究结果表明:提出的耦合计算方法可行且有效,摆式电涡流TMD可有效降低钢框架结构的地震响应,当μm为3%时较为合理。其中,20层钢框架结构的层位移、层间位移角、层剪力和层加速度分别减小26.5%、20.9%、4.3%、7.3%。Pendulum eddy current TMD as a new type of damper is often used in the control of human-induced vibration and wind-induced vibration,but seldom used in seismic engineering.And there is still a lack of effective calculation methods.In this paper,a coupling calculation method based on joint simulation is proposed to investigate the damping performance and reasonable value of mass ratio.A numerical model is established for 5-story,10-story and 20-story steel frame structures along with five groups of pendulum eddy current TMDs with different mass ratios,which conform to the current Seismic design code for buildings and mechanical properties of pendulum eddy current TMD.A dynamic time-history analysis is performed on the numerical model by using coupling calculation method.The analysis yields a series of curves of story drift,interstory drift ratio,story shear force,and story acceleration versus mass ratio under rare earthquakes.The analysis results are compared to the results of the control model that has no pendulum eddy current TMD.The comparison shows the feasibility of the proposed coupling calculation method and that pendulum eddy current TMD can effectively reduce the seismic response of the steel frame,with a 26.5%reduction for story drift,20.9%for interstory drift ratio,4.3%for story shear force,and 7.3%for story acceleration of a 20-story steel frame structure when the reasonable mass ratio is recommended to be 3%.

关 键 词：调谐质量阻尼器 耦合计算方法 钢框架结构 质量比 减震分析 

分 类 号：TU313[建筑科学—结构工程] TU391