摘要
将土木建筑领域应用广泛的粘弹性阻尼器用于联合塔器,以期减振。设计了联合塔器小试实验模型,得出了附加刚度对联合塔器固有频率和阻尼比的影响规律,与单塔相比,联合塔器固有频率增大70%以上,阻尼比显著增加;同时建立了等效有限元模型,以共振振幅和共振频率为主要判定准则,探究粘弹性阻尼器参数和安装高度对联合塔器减振效果的影响规律,与单塔相比,安装粘弹性阻尼器的联合塔器共振振幅可减小70%以上。
The viscoelastic damper which widely-applied in civil construction was applied to the combined tower to benefit the vibration reduction. The lab test model of the combined tower was designed and the rule of additional stiffness which influencing the combined tower’s intrinsic frequency and damping ratio was obtained.Compared with the single tower,the natural frequency of the combined tower increases by 70% obviously and the damping ratio increases significantly. Through establishing an equivalent finite element model and taking resonance amplitude and resonant frequency as the main criterion,the rule of viscoelastic damper’s parameters and the installation height which influencing the damping effect of the combined tower was investigated. The resonance amplitude of the combined tower can be reduced by more than 70% compared with the single tower.
作者
谭蔚
陈晓宇
孟国龙
曾万川
樊显涛
TAN Wei;CHEN Xiao-yu;MENG Guo-long;ZENG Wan-chuan;FAN Xian-tao(School of Chemical Engineering and Technology, Tianjin University;Kunming Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd.)
出处
《化工机械》
CAS
2019年第2期131-136,151,共7页
Chemical Engineering & Machinery
关键词
联合塔器
粘弹性阻尼器
风致振动
固有频率
阻尼比
减振
combined tower
viscoelastic damper
wind-induced vibration
intrinsic frequency
damping ratio
vibration attenuation
