調(diào)諧質(zhì)量阻尼器(TMD)在高層結(jié)構(gòu)上應(yīng)用的總結(jié)與研究
陳永祁，彭 程，馬良喆
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(北京奇太振控科技發(fā)展有限公司，北京100037)[摘要] 一般而言，使用TMD減少結(jié)構(gòu)風(fēng)振有著很好的效果，但也有很多由頻率過于敏感而引起的局限性。為了全面研究在高層結(jié)構(gòu)上使用TMD減振的效果，從單自由度理論模型到實際的高層結(jié)構(gòu)，分析了TMD的阻尼比、TMD能否抗震、TMD的頻率敏感性等關(guān)鍵問題。結(jié)果表明，TMD的阻尼比不宜用于結(jié)構(gòu)設(shè)計，且TMD也不宜用于抗震，而在結(jié)構(gòu)層間使用阻尼器在風(fēng)振和地震工況下均有良好的減振效果。另有結(jié)果表明，TMD對頻率非常敏感，且TMD會在一定程度上不利于結(jié)構(gòu)的扭轉(zhuǎn)效應(yīng)。[關(guān)鍵詞] TMD；阻尼比；抗震；頻率；扭轉(zhuǎn)中圖分類號：TU352.1 文獻標(biāo)識碼：A 文章編號：1002-848X（2013）S2-0269-07作者簡介：陳永祁，博士，高級工程師，Email：info@bluelakeint.com。Effect analysis of tuned mass damper (TMD) in high-rise structureChen Yongqi, Peng Cheng, Ma Liangzhe(Being Qitai Shock Control and Scientific Development Co.,Ltd.,Beijing100037,China)Abstract: Generally speaking, using TMD to reduce wind-induced vibration of structures has an excellent effect. But there are also a lot of limitations due to the sensitiveness of frequency. To comprehensively study the damping effect of TMD, from SDOF to actual structure, some significant problem about TMD like damping ratio, whether can be used for earthquake, frequency sensitivity were discussed in this paper. Calculation results show that, the damping ratio of TMD cannot be use for structural design, and it's inadvisable to use TMD for earthquake while the dampers perform satisfactorily under wind or seismic excitation. Other results show that, TMD is supersensitive to frequency, and TMD may goes against the torsion of the structure to a certain extent.Keywords : TMD; damping ratio; seismic resistance; frequency; torsion
