附设粘滞阻尼器的高层立体车库风振性能  

Wind-induced Vibration Performance of Hise-rise 3D Parking Garage with Viscous Damper

作　　者：邹平波 陈繁荣 沈琪 赵强 李英 ZOU Pingbo;CHEN Fanrong;SHEN Qi;ZHAO Qiang;LI Ying(China United Engineering Corporation Limited,Hangzhou 310052,China;Central-South Architectural Design Institute Co Ltd,Wuhan 430071,China)

机构地区：[1]中国联合工程有限公司,浙江杭州310052 [2]中南建筑设计院股份有限公司,湖北武汉430071

出　　处：《土木工程与管理学报》2021年第5期104-109,共6页Journal of Civil Engineering and Management

基　　金：中国联合工程有限公司技术发展基金(20K-11)。

摘　　要：为了控制高层立体车库在水平风荷载作用下的风振响应,附设粘滞阻尼器是一种有效方法。针对带隔层支撑的高层立体车库,提出了两类阻尼器布置方案,基于采用线性滤波法的自回归模型(AR模型)生成总风压时程数据,通过ANSYS软件进行风振时程分析,仅引入附加阻尼,研究原结构附设粘滞阻尼器之后的减振效果,以减振率和吸收的风振能量为性能指标,通过比较不同阻尼器布置方案的性能指标差异,得到最优阻尼器布置方案。结果表明:方案A-1的减振效果最好,中柱和角柱的减振率分别为29.2%,36.1%,其他构件吸收的风振能量为715 J。附设粘滞阻尼器之后,结构的层间位移角、顶部位移和顶部加速度都得到明显改善,为高层立体车库的抗风设计提供了参考。In order to control the wind-induced vibration response of the high-rise 3D parking garage under the horizontal wind load,attaching a viscous damper is an effective method.For the high-rise 3D garage with support alternately arranged,two types of damper layout schemes are proposed.Then,the total wind pressure time-history data is generated based on the auto-regressive model(AR model)which uses linear filtering method,and the wind-induced vibration time-history analysis is performed through ANSYS software.Additionally,in the analysis,only adding damping,to study on vibration reduction effect of the original structure with viscous dampers,and the optimal damper arrangement scheme is obtained by taking the damping rate and absorbed wind energy as performance indicators and comparing the performance index differences of different damper layout schemes.Finally,the results show that:scheme A-1 has the best vibration reduction effect,the vibration reduction rates of the center column and corner columns are 29.2%and 36.1%,respectively,and the wind energy absorbed by other components is 715 J.After the viscous damper is attached,the inter-story drift ratio,the top displacement and the top acceleration of the structure are all significantly improved.It provides a reference for the wind-resistant design of 3D parking garages.

关 键 词：立体车库 AR模型 风振时程分析 附加阻尼 减振率 风振能量 

分 类 号：TU973.13[建筑科学—结构工程]