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王增春，  何艷麗，  陳務(wù)軍
(上海交通大學(xué)，上海200030)

[摘要] 有別于傳統(tǒng)TMD，本文提出的內(nèi)部子結(jié)構(gòu)調(diào)諧質(zhì)量阻尼器(iTMD)是一種利用建筑自身的某一獨(dú)立單元（內(nèi)部子結(jié)構(gòu)）作為質(zhì)量塊通過(guò)彈簧、阻尼器和橡膠支座等媒介與主體結(jié)構(gòu)相互作用而形成的一種新的減震耗能系統(tǒng)。iTMD的優(yōu)點(diǎn)是不增加結(jié)構(gòu)的自重的情況下，通過(guò)調(diào)整子結(jié)構(gòu)的自振頻率，使其盡量接近主結(jié)構(gòu)的基本頻率或激振頻率，使主結(jié)構(gòu)在受到地震激勵(lì)時(shí)振動(dòng)反應(yīng)衰減而受到控制。通過(guò)計(jì)算獲得相應(yīng)減震參數(shù)和合理布置iTMD系統(tǒng)，將iTMD減震技術(shù)應(yīng)用于上海證大五道口廣場(chǎng)商業(yè)建筑的減震設(shè)計(jì)中，分別進(jìn)行的彈塑性靜力推覆( Pushover)分析和彈塑性動(dòng)力時(shí)程分析，分析結(jié)果表明iTMD系統(tǒng)的安裝，能夠較好地減少地震效應(yīng)，具有簡(jiǎn)單、高效、經(jīng)濟(jì)等優(yōu)點(diǎn)。
[關(guān)鍵詞] 調(diào)諧質(zhì)量阻尼器；地震；推覆分析；時(shí)程分析法
中圖分類號(hào)：TU313    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：1002-848X(2012) S2-0189-05

Pushover and elastic-plastic seismic analysis of structure with iTMD system
Wang Zengchun, He Yanli, Chen Wujun
( Shanghai Jiaotong University, Shanghai 200030, China)

Abstract: Different from the traditional TMD, innersubstructure tuned mass damper(iTMD)is a new technology of using an independent unit of main structure( innersubstructure)as a massconnected to main structure through springs, dampers and rubber bearings and other media, and the interaction ofiTMD and main structure form a new shockabsorption system.  iTMD has the advantage of not increasing the weight of the structure, through the adjustment of structure natural vibration frequency, making it as close as possible to the main structure of the basic frequency and excitation frequency, so that the main structures subjected to seismic excitation vibration response attenuation under control. By calculating the corresponding damping parameters and reasonable arrangement of iTMD system, the iTMD system was applied in the seismic design of Shanghai Zendai Wudaokou Plaza Commercial Building. The elasto-plastic Pushover analysis and elasto-plastic time-history analysis results show that the installation of iTMD system used to reduce the seismic effect holds simple, efficient, economic and other advantages.
Keywords: TMD; earthquake; Pushover; dynamic time-history analysis method