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简谐激励下TLD对高层结构减震性能
引用本文:董悦,唐贞云,刘豪.简谐激励下TLD对高层结构减震性能[J].哈尔滨工业大学学报,2022,54(4):92-100.
作者姓名:董悦  唐贞云  刘豪
作者单位:城市与工程安全减灾教育部重点实验室北京工业大学,北京 100124
基金项目:国家自然科学基金(51908016)
摘    要:调谐液体阻尼器(TLD)是一种典型有效的结构响应被动控制装置.为解决已有报道中缺乏不同参数影响下TLD对高层结构的频域减震规律试验研究的问题,本研究建立了TLD-结构振动台实时子结构试验系统,通过一系列正弦激励试验,研究了不同参数下TLD对高层结构的频域减震性能.分别讨论了地震动频率与结构一阶频率比、TLD频率与结构一...

关 键 词:高层结构  减震性能  调谐液体阻尼器  实时混合试验  简谐激励
收稿时间:2021/6/7 0:00:00

Seismic performance of TLD controlled high-rise structures subjected to harmonic excitation
DONG Yue,TANG Zhenyun,LIU Hao.Seismic performance of TLD controlled high-rise structures subjected to harmonic excitation[J].Journal of Harbin Institute of Technology,2022,54(4):92-100.
Authors:DONG Yue  TANG Zhenyun  LIU Hao
Affiliation:Key Lab of Urban Security and Disaster Engineering Beijing University of Technology, Ministry of Education, Beijing 100124, China
Abstract:Tuned liquid damper (TLD) is a typical effective passive vibration control device. In view of the problem of lack of research on the damping properties of TLD for high-rise structures in frequency domain under the influences of different parameters, a real-time substructure testing system was established for evaluating seismic performance of high-rise buildings installed with TLD. A series of sinusoidal excitation tests were conducted to investigate the damping performance of TLD with different parameters in frequency domain. The influences of excitation frequency ratio, TLD frequency ratio, TLD mass ratio, structural damping ratio, and input amplitude on the seismic performance of TLD in frequency domain were discussed. Results show that TLD had the best damping effect on structural acceleration and displacement when the input excitation frequency and TLD frequency were both first-order frequency of the structure. Meanwhile, the damping effect of TLD became worse with the increase in damping ratio and was little affected by the input amplitude. When the input excitation frequency and TLD frequency deviated from the structural frequency, TLD did not significantly increase the response of the structure, except for the negative effect when the input excitation frequency was lower than the structural frequency. TLD is more suitable for controlling the resonance response components of structures with small damping ratios, has poor damping effect on the frequency components far away from the natural frequency of structures, and may have great adverse effects on the frequency components less than the natural frequency of structures.
Keywords:high-rise structure  seismic performance  tuned liquid damper  real-time hybrid testing  harmonic excitation
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