擺式電渦流TMD鋼框架結(jié)構(gòu)的耦合計(jì)算方法與減震分析

潘毅 包韻雷 國(guó)巍 陳業(yè)宏

摘要：擺式電渦流TMD作為一種新型阻尼器，多用于人致振動(dòng)和風(fēng)振控制，較少應(yīng)用抗震工程，也缺乏較好的計(jì)算方法。為研究擺式電渦流TMD的減震性能及合理的質(zhì)量比μm，根據(jù)擺式電渦流TMD的力學(xué)特性，提出一種基于聯(lián)合仿真的耦合計(jì)算方法，根據(jù)現(xiàn)行建筑抗震設(shè)計(jì)規(guī)范，分別建立了5、10、20層鋼框架結(jié)構(gòu)模型，設(shè)計(jì)了5組不同μm的擺式電渦流TMD，并采用提出的耦合計(jì)算方法，對(duì)擺式電渦流TMD鋼框架結(jié)構(gòu)模型進(jìn)行了動(dòng)力時(shí)程分析，得到了罕遇地震作用下結(jié)構(gòu)的層位移、層間位移角、層剪力和層加速度與μm的關(guān)系曲線，并與無TMD結(jié)構(gòu)的地震響應(yīng)進(jìn)行了對(duì)比。研究結(jié)果表明：提出的耦合計(jì)算方法可行且有效，擺式電渦流TMD可有效降低鋼框架結(jié)構(gòu)的地震響應(yīng)，當(dāng)μm為3%時(shí)較為合理。其中，20層鋼框架結(jié)構(gòu)的層位移、層間位移角、層剪力和層加速度分別減小26.5%、20.9%、4.3%、7.3%。

關(guān)鍵詞：調(diào)諧質(zhì)量阻尼器;耦合計(jì)算方法;鋼框架結(jié)構(gòu);質(zhì)量比;減震分析

中圖分類號(hào)：TU313;TU391 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：20966717（2020）04008410

收稿日期：20200219

基金項(xiàng)目：國(guó)家重點(diǎn)研發(fā)計(jì)劃（2016YFC0802205）;四川省科技計(jì)劃（2019YJ0222）;科技部資助項(xiàng)目（KY201801005）

作者簡(jiǎn)介：潘毅（1977 ），男，教授，博士生導(dǎo)師，主要從事工程結(jié)構(gòu)抗震與加固研究，Email：panyi@swjtu.edu.cn。

國(guó)巍（通信作者），男，教授，博士生導(dǎo)師，Email：guowei@csu.edu.cn。

Received：20200219

Foundation items：National Key Research and Development Program （No. 2016YFC0802205）; Sichuan Science and Technology Program （No. 2019YJ0222）; Ministry of Science and Technology of China （No. KY201801005）

Author brief：Pan Yi （1977 ）， professor， doctorial supervisor， main research interests： engineering structural seismic and reinforcement， Email： panyi@swjtu.edu.cn.

Guo Wei （corresponding author）， professor， doctorial supervisor， Email： guowei@scu.edu.cn.

Coupling calculation method and seismic analysis of pendulum eddy current TMDsteel frame structures

Pan Yi1a，1b， Bao Yunlei1a， Guo Wei2， Chen Yehong3

（1a.School of Civil Engineering; 1b. Key Laboratory of Seismic Engineering of Sichuan Province， Southwest Jiaotong University， Chengdu 610031， P. R. China; 2.School of Civil Engineering， Central South University， Changsha 410075， P. R. China;3.School of Civil Engineering， Tongji University， Shanghai 200092， P. R. China）

Abstract： Pendulum eddy current TMD as a new type of damper is often used in the control of humaninduced vibration and windinduced vibration， but seldom used in seismic engineering. And there is still a lack of effective calculation methods. In this paper， a coupling calculation method based on joint simulation is proposed to investigate the damping performance and reasonable value of mass ratio. A numerical model is established for 5story， 10story and 20story steel frame structures along with five groups of pendulum eddy current TMDs with different mass ratios， which conform to the current Seismic design code for buildings and mechanical properties of pendulum eddy current TMD. A dynamic timehistory analysis is performed on the numerical model by using coupling calculation method. The analysis yields a series of curves of story drift， interstory drift ratio， story shear force， and story acceleration versus mass ratio under rare earthquakes. The analysis results are compared to the results of the control model that has no pendulum eddy current TMD. The comparison shows the feasibility of the proposed coupling calculation method and that pendulum eddy current TMD can effectively reduce the seismic response of the steel frame， with a 26.5% reduction for story drift， 20.9% for interstory drift ratio， 4.3% for story shear force， and 7.3% for story acceleration of a 20story steel frame structure when the reasonable mass ratio is recommended to be 3%.

Keywords：tuned mass damper （TMD）; coupling calculation method; steel frame structure; mass ratio; seismic analysis

調(diào)諧質(zhì)量阻尼器（Tuned Mass Damper，簡(jiǎn)稱TMD）作為一種被動(dòng)式吸能減振裝置，在結(jié)構(gòu)減振領(lǐng)域得到廣泛應(yīng)用。TMD由于性能穩(wěn)定、結(jié)構(gòu)簡(jiǎn)單、易于調(diào)節(jié)自身剛度、便于安裝等特點(diǎn)，可以滿足結(jié)構(gòu)任意水平方向和不同頻段的振動(dòng)控制需要，多應(yīng)用于樓蓋的人致振動(dòng)控制與橋梁、高層建筑的風(fēng)致振動(dòng)控制中[14]。……