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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

37卷

期数:

2020年03期

页码:

37-44

栏目:

出版日期:

2020-05-30

文章信息/Info

Title:

RTMD Damping Technology Based on Hollow Floor and Experimental Study

文章编号:

1673-2049(2020)03-0037-08

作者:

李书进,丁注秋,孙 磊,孔 凡

(武汉理工大学 土木工程与建筑学院,湖北 武汉 430070)

Author(s):

LI Shu-jin, DING Zhu-qiu, SUN Lei, KONG Fan

(School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China)

关键词:

振动控制;  耗能减震体系;  空腔楼盖结构;  滚动式调谐质量阻尼器;  振动台试验

Keywords:

vibration control;  energy dissipation system;  hollow-floor structure;  rolling tuned mass damper;  shaking table test

分类号:

TU352

DOI:

10.19815/j.jace.2019.07050

文献标志码:

A

摘要:

利用目前在建筑物上得到广泛应用的钢筋混凝土空腔楼板结构所具有的空腔特征,提出了一种可置入空腔楼板内部的滚动式调谐质量阻尼装置(RTMD)。对这种减震装置进行了理论与试验研究,建立了该装置与结构相互作用的计算模型,利用Lagrange原理推导得到了受控结构的运动微分方程。对装有该装置的单层框架进行了振动台试验,采用自由振动、简谐激励和地震激励3种动力作用形式试验研究了设置有该阻尼装置下的结构减震情况。通过数值计算和试验研究对其进行了动力特性和减震性能分析。结果表明:所提装置可以有效减小结构的动力响应,特别是对结构的共振反应具有明显的抑制作用,能大幅减小结构的共振效应; 该装置不额外占用建筑的使用空间,不影响结构使用功能,可有效解决控制装置设置与建筑功能相冲突的矛盾,对结构的地震反应也有一定的减震作用,应用前景广阔。

Abstract:

Based on the cavity characteristics of reinforced concrete hollow-floor structural system, which was widely used in buildings at present, a rolling tuned mass damper(RTMD)which could be placed in the hollow-floor was proposed. The theoretical and experimental research on this kind of damping device was carried out, the calculation model of the interaction between the device and the structure was established, and the motion differential equation of the controlled structure was derived by using the Lagrange principle. The shaking table test of single-layer frame equipped with the device was carried out. The vibration reduction of the structure equipped with the device was studied by three kinds of dynamic action forms of free vibration, simple harmonic excitation and seismic excitation. Through numerical calculation and experimental study, the dynamic characteristics and damping performance of the system were analyzed. The results show that the proposed device can effectively reduce the dynamic response of the structure, especially the resonance response of the structure, and greatly reduce the resonance effect of the structure. The device does not occupy the use space of the building, does not affect the use function of the structure, so it can effectively solve the conflict between the setting of control device and the function of the building, and has a certain damping effect on the seismic response of the structure, so it has a broad application prospect.

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备注/Memo

备注/Memo:

收稿日期:2019-07-22
基金项目:国家自然科学基金项目(51678464)
作者简介:李书进(1967-),男,湖北仙桃人,教授,博士研究生导师,工学博士,E-mail:sjli@whut.edu.cn。

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更新日期/Last Update: 2020-06-08