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新型圍護(hù)墻MTMD減震結(jié)構(gòu)減震性能試驗(yàn)研究*
盧俊龍1,何明勝2,田潔1
摘 要
盧俊龍1,何明勝2,田潔1
(1 西安理工大學(xué)土木建筑工程學(xué)院, 西安 710048;2 石河子大學(xué)水利建筑工程學(xué)院, 石河子 832003)
 
摘要]為研究新型圍護(hù)墻MTMD減震結(jié)構(gòu)的振動(dòng)控制方式及減震性能,在不同的圍護(hù)墻TMD布置方式條件下,采用不同連接剛度的阻尼器,依次輸入加速度峰值遞增的El Centro波,進(jìn)行1/3比例模型結(jié)構(gòu)的振動(dòng)臺(tái)試驗(yàn),并進(jìn)行結(jié)構(gòu)振動(dòng)特性試驗(yàn),將測(cè)試結(jié)果與普通抗震結(jié)構(gòu)的結(jié)果進(jìn)行對(duì)比。振動(dòng)臺(tái)試驗(yàn)結(jié)果表明,在不同減震工況條件下,結(jié)構(gòu)的加速度及位移最大減震率較為接近,約為30%,結(jié)構(gòu)頂層的減震率最大;振動(dòng)測(cè)試結(jié)果表明,減震結(jié)構(gòu)的振動(dòng)特性主要由第1階平動(dòng)振型決定。因此,當(dāng)圍護(hù)墻TMD數(shù)量不多、結(jié)構(gòu)層數(shù)較少時(shí),不同的TMD布置方案下,結(jié)構(gòu)的減震率變化不顯著,圍護(hù)墻MTMD減震結(jié)構(gòu)的受控振型為第1階振型。
關(guān)鍵詞]圍護(hù)墻MTMD減震結(jié)構(gòu);減震性能;地震反應(yīng)分析
中圖分類(lèi)號(hào):TU311.3        文獻(xiàn)標(biāo)識(shí)碼:A        文章編號(hào):1002-848X(2013)04-0055-05
 
Test research on vibration absorption performance of enclosure wall MTMD vibration absorption structure
Lu Junlong1, He Mingsheng2, Tian Jie1
(1 College of Architecture and Civil Engineering, Xi′an University of Technology, Xi′an 710048, China; 2 College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832003, China)
 
Abstract: To research the vibration control means and vibration absorption performance of the enclosure wall MTMD(Multiple Tuned Mass Damper)vibration absorption structure which is a new vibration absorption structure, the model scaled in 1/3 shake-table test was done under different disposal methods of TMD and different dampers in link stiffness under the peak value of acceleration of El Centro wave ascended. At the same time, vibration performance test was done. The test results were compared with the ordinary seismic structure. The results show that the rate of vibration reduction of displacement and acceleration is closer under different vibration absorption case which is about 30%. The peak value ratio of vibration reduction lies in the top story. The vibration test results indicate that the vibration characteristics are inferred from the first stage of horizontal vibration type. Therefore, when the enclosure wall TMD and story of structure are not many, the change of rate of vibration reduction is not remarkable under different disposals of TMD. And the controlled vibration type of enclosure wall MTMD is the first stage.
Keywords: enclosure wall MTMD vibration absorption structure; vibration absorption performance; seismic response analysis
*國(guó)家自然科學(xué)基金項(xiàng)目(50868011,51178385,51078310)
作者簡(jiǎn)介:盧俊龍,博士,講師,Email:lujunlong@sohu.com
 
參考文獻(xiàn)
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