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（1 中衡設(shè)計(jì)集團(tuán)股份有限公司， 蘇州 215021； 2 江蘇省生態(tài)建筑與復(fù)雜結(jié)構(gòu)工程技術(shù)研究中心， 蘇州 215021）

［摘要］蘇州文博中心建筑造型新穎，連接兩棟建筑的高低位飄帶總長(zhǎng)235m，結(jié)構(gòu)體型復(fù)雜，空間跨度最大處為80m，在風(fēng)荷載和人行荷載激勵(lì)下，容易產(chǎn)生較大的振動(dòng)引發(fā)舒適度問(wèn)題。采用SAP2000軟件對(duì)飄帶結(jié)構(gòu)建立三維有限元模型并進(jìn)行舒適度分析；分別采用時(shí)域分析法和頻域分析法計(jì)算飄帶結(jié)構(gòu)在不同行人密度、不同行人頻率的人行荷載和全風(fēng)向的風(fēng)荷載作用下的振動(dòng)響應(yīng)，并對(duì)比分析有、無(wú)TMD減振器對(duì)加速度峰值的影響。計(jì)算分析結(jié)果表明，按提出的方法設(shè)置TMD減振器后，結(jié)構(gòu)加速度顯著減小，大部分工況下關(guān)鍵節(jié)點(diǎn)的減振率在20%以上，其加速度峰值滿足人體舒適度要求。

［關(guān)鍵詞］蘇州文博中心； 風(fēng)振； 調(diào)諧質(zhì)量阻尼器； 人行荷載； 舒適度； 時(shí)域分析法； 頻域分析法

中圖分類號(hào)：TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)01-0049-05

Vibration comfort analysis of the ribbon-shaped structure of Suzhou Culture & Expo Center with TMD

Gong Minfeng1,2, Wang Yixiang1,2, Ai Huijun1,2, Zhu Xunyan1,2

(1 ARTS Group Co.,  Ltd.,  Suzhou 215021, China; 2 Jiangsu Engineering Institute of Ecological Building & Complex Structure, Suzhou 215021, China)

Abstract:Suzhou Culture & Expo Center  has a novel architectural style. The total length of the high and low ribbon-shaped structure connecting the two buildings is 235m， which has complex shape and the maximum space span is 80m. Under the wind load and pedestrian load excitation, it is easy to generate large vibration and cause comfort problems.The three-dimensional finite element model of the ribbon-shaped structure was established by SAP2000 software and the comfort analysis was carried out. The time-domain analysis method and the frequency-domain analysis method were used to calculate the vibration response under pedestrian load with different pedestrian densities and different pedestrian frequencies and wind loads from all directions, and comparative analyses of the influence of TMD damper on acceleration responses were carried out. The calculation analysis results show that the structure acceleration is significantly reduced after the TMD damper is set according to the proposed method. The damping rate of most key nodes is above 20%, and the peak acceleration meets the requirements of human comfort.

Keywords:Suzhou Culture & Expo  Center； wind induced vibration; tuned mass damper; pedestrian load; comfort; time-domain analysis method; frequency-domain  analysis method

作者簡(jiǎn)介：龔敏鋒，碩士，工程師，Email：gongminfeng@artsgroup.cn。