（1 中国航空规划设计研究总院有限公司， 北京 100120；2 北京交通大学土木建筑工程学院，  北京 100044）

［摘要］以采用调谐质量阻尼器（TMD）进行振动控制的某小学体育馆大跨楼盖为背景，分别在施工阶段和正常使用阶段对其进行了现场振动测试。施工阶段主要考虑质量增加对结构振动特性的影响，正常使用阶段重点考虑了人致振动的多种工况，并利用MIDAS/Gen有限元软件对TMD的减振效率进行了分析。结果表明：大跨楼盖的自振频率随着铺设面层以及楼面重量的增加而减小，舒适度设计时应按使用阶段的实际最大荷载考虑；采用有限元软件对楼盖舒适度进行计算时，应考虑面层对楼板刚度的影响；当外部激励的频率与楼盖的自振频率接近时，TMD对楼盖的减振效果最为显著。

［关键词］大跨楼盖；振动测试；调谐质量阻尼器；人致振动；减振

中图分类号：TU398-9文献标识码：A文章编号：1002-848X(2021)03-0109-06

Dynamic properties and human-induced vibration  analysis of long-span floors equipped with TMD

WANG Mingzhu1, HU Weizhong2, ZHANG Ling1, LIU Pei2, YANG Weiguo2, GE Jiaqi1

(1 China Aviation Planning and Design Institute Co., Ltd., Beijing 100120, China; 2 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract:With the use of tuned mass dampers（TMD）for vibration control in the long-span floors of gymnasium of a primary school as the background, vibration tests were performed on the long-span floors at construction stage and normal use stage. The influence of mass increase on structural vibration characteristics was studied in construction stage. During the normal use stage, various working conditions of human-induced vibration were considered emphatically, and the vibration reduction efficiency of TMD was analyzed using MIDAS/Gen finite element software. Results show that the natural vibration frequency of the long-span floor decreases with the increase of the floor surface layers and floor weight. The comfort design of floors should use the actual maximum load at normal use stage. When finite element software is used to calculate the comfort of the floor, the influence of stiffness of floor surface layers should be considered. When the frequency of external excitation is close to the natural frequency of the floor, the vibration reduction effect of TMD on the floor is the most significant.

Keywords:long-span floor;vibration test;tuned mass damper;human-induced vibration;vibration reduction

作者简介：王明珠，硕士，高级工程师，Email: 66539256@qq.com；通信作者：胡卫中，博士研究生，Email：hwz_2016@163.com。