潘毅 包韻雷 國巍 陳業宏



摘要:擺式電渦流TMD作為一種新型阻尼器,多用于人致振動和風振控制,較少應用抗震工程,也缺乏較好的計算方法。為研究擺式電渦流TMD的減震性能及合理的質量比μm,根據擺式電渦流TMD的力學特性,提出一種基于聯合仿真的耦合計算方法,根據現行建筑抗震設計規范,分別建立了5、10、20層鋼框架結構模型,設計了5組不同μm的擺式電渦流TMD,并采用提出的耦合計算方法,對擺式電渦流TMD鋼框架結構模型進行了動力時程分析,得到了罕遇地震作用下結構的層位移、層間位移角、層剪力和層加速度與μm的關系曲線,并與無TMD結構的地震響應進行了對比。研究結果表明:提出的耦合計算方法可行且有效,擺式電渦流TMD可有效降低鋼框架結構的地震響應,當μm為3%時較為合理。其中,20層鋼框架結構的層位移、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%。
關鍵詞:調諧質量阻尼器;耦合計算方法;鋼框架結構;質量比;減震分析
中圖分類號:TU313;TU391 文獻標志碼:A 文章編號:20966717(2020)04008410
收稿日期:20200219
基金項目:國家重點研發計劃(2016YFC0802205);四川省科技計劃(2019YJ0222);科技部資助項目(KY201801005)
作者簡介:潘毅(1977 ),男,教授,博士生導師,主要從事工程結構抗震與加固研究,Email:panyi@swjtu.edu.cn。
國巍(通信作者),男,教授,博士生導師,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
調諧質量阻尼器(Tuned Mass Damper,簡稱TMD)作為一種被動式吸能減振裝置,在結構減振領域得到廣泛應用。TMD由于性能穩定、結構簡單、易于調節自身剛度、便于安裝等特點,可以滿足結構任意水平方向和不同頻段的振動控制需要,多應用于樓蓋的人致振動控制與橋梁、高層建筑的風致振動控制中[14]。……