摘要
在高层结构中,调谐液体阻尼器(TLD)是结构被动控制的一种装置,在结构风振控制中得到了广泛的应用,但是在地震作用下TLD对高层结构的控制技术还不完善。通过Sap2000有限元软件建立了实际框架-核心筒模型,对TLD在地震作用下的影响因素进行动力时程分析,研究了质量比、频率比以及TLD作用位置对减震效果的影响规律。得出了在频率比和位置一定时,TLD的减震率随着质量比的增大而增大,在质量比大于3%之后,减震率将逐渐减小;在质量比和位置确定时,减震率随着频率比的增大呈现出类似正态分布的规律,在频率比为0.88左右时,减震率达到最大;在质量比和频率比一定时,将TLD放置在中间位置比放在其他位置的减震率要高,为今后高层结构的设计提供参考。
In high-rise structure, the tuned liquid damper （TLD） is a kind of passive vibration control device. It has been widely used in wind vibration control of high-rise buildings While the TLD control technology of high-rise structure under seismic action is not perfect, this paper establishes a practical frame-core wall structure model using Sap2000 finite element software, which is used to make dynamical and time -history analysis for the influencing factors of TLD under seismic action. It analysis the factors to damping effect, such as： mass ratio, frequency ratio; and TLD position. The result of this study shows that with a confirmed frequency ratio and position, the TLD damp- ing rate increases as the mass ratio increases when the value of mass ratio is no greater than 3%, or the damping rate will gradually decrease; when the mass ratio and the position are comfirmed, with the increasing of frequency ratio, the changing of damping rate shows a similar way with the normal distribution law, and the damping rate rea- ches the maximum value when the frequency ratio is about 0.88 ; while the mass ratio and the frequency ratio are constant, the damping rate of TLD placed at an intermediate position is higher than in other locations, this paper of- fers significant references for engineering design of high - rise structure.
出处
《世界地震工程》
CSCD
北大核心
2015年第4期193-200,共8页
World Earthquake Engineering
基金
国家重点基础研究发展计划资助项目(2012CB723302)
陕西省教育厅项目(02js29)
关键词
调谐液体阻尼器
减震控制
高层建筑结构
地震动控制
tuned iiquid damper
vibration control
high-rise building structure
seismic control
