建筑结构学报2025，Vol.46Issue(3)：1-11,11.DOI:10.14006/j.jzjgxb.2024.0313
配置串联减振单元的悬挑结构减振分析
Vibration reduction analysis of cantilever structure with series vibration-reduction unit
摘要
Abstract
To improve the comfort of cantilever structure,a cantilever structure with series vibration-reduction unit was proposed.By connecting the ends of adjacent floors of cantilever structures with hinged series vibration-reduction units,the vertical vibration of cantilever structures was reduced.Through theoretical derivations,the dimensionless parameter R which represented the key characteristics of the cantilever structure with series vibration-reduction unit was delivered,and the calculation method of the vibration reduction rate μ was proposed,which indicated that the μ value was only directly related to the number of floors and the R value.Finite element analysis shows that the μ value isn't directly related to the damping ratio.The calculation methods of the μ value for concentrated mass model and consistent mass model is the same.A calculation formula of the maximum vibration reduction rate μmax was proposed,which indicated that the μmax value was only directly related to the number of floors.When incorporating the influence of non-ideal elastic supports,the μ value increased.A calculation method for estimating the μ value under non-ideal elastic supports was proposed leveraging the adoption of comprehensive.Case studies show that,the R value of cantilever structures with series vibration-reduction unit in conventional engineering is quite small,and the μ value is close to μmax value.The increased steel consumption of series vibration-reduction unit is only 20％of tuned mass damper(TMD)vibration-reduction system.Finally,the design process of cantilever structure with series vibration-reduction unit was proposed.It is suggested to verify the vibration comfort after component design of series vibration-reduction unit.关键词
悬挑结构/串联减振单元/减振率/减振设计Key words
cantilever structure/series vibration-reduction unit/vibration reduction rate/vibration reduction design分类
土木建筑引用本文复制引用
张龑华,甄伟,张万开,冯鹏,李伟,王可,慕晨曦,盛平..配置串联减振单元的悬挑结构减振分析[J].建筑结构学报,2025,46(3):1-11,11.基金项目
国家重点研发计划项目(2022YFC3801800). （2022YFC3801800）
