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(1 蘭州理工大學(xué)土木工程學(xué)院， 蘭州 730050；2 甘肅省建筑設(shè)計(jì)研究院， 蘭州 730030)

［摘要］對(duì)于懸吊樓蓋，其懸吊端豎向剛度較弱，人群荷載激勵(lì)下易發(fā)生較大振動(dòng)。以甘肅省體育館13.500m標(biāo)高懸吊樓蓋為研究對(duì)象，在主體結(jié)構(gòu)完工后，首先，測(cè)試了樓蓋在環(huán)境脈動(dòng)激勵(lì)作用下的振動(dòng)模態(tài)；其次，參照樓蓋的振動(dòng)模態(tài)實(shí)測(cè)了樓蓋在不同激勵(lì)下包括單人行走、多人行走、多人跳躍、多人跑步、自由運(yùn)動(dòng)等工況下的加速度反應(yīng)；最后根據(jù)樓蓋的建筑使用功能，以峰值加速度為指標(biāo)評(píng)估該懸吊樓蓋的振動(dòng)舒適度。結(jié)果表明，懸吊樓蓋在人行荷載作用下存在較為顯著的振動(dòng)響應(yīng)和一定程度的振動(dòng)舒適度問(wèn)題，人致激勵(lì)的類(lèi)型和路線對(duì)樓蓋的振動(dòng)舒適度有顯著的影響。 

［關(guān)鍵詞］懸吊樓蓋；振動(dòng)模態(tài)；人群荷載激勵(lì)；人致振動(dòng)；峰值加速度；舒適度；動(dòng)力測(cè)試 

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(2021)20-0103-07

Field test and research on human-induced vibration comfort of suspension floor of Gansu Gymnasium 

RUI  Jia1,2,  LIU  Kaifang1,  ZHANG  Jutao2,  DU  Yongfeng1,  ZHU  Qiankun1 

(1 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050， China；2 Gansu Institute of Architectural Design & Research Institute, Lanzhou 730030， China) 

Abstract: For suspended floors, the vertical stiffness of the suspended ends is weak, and large vibrations are prone to occur under the excitation of crowd loads. Taking the suspended floor of the Gansu Gymnasium at 13.500m elevation as the research object, after the main structure was completed, the vibration modes of the floor under the action of environmental pulsation were tested firstly. Then, the acceleration response of the floor under different excitation conditions including single-person walking, multi-person walking, multi-person jumping, multi-person running, and free movement were measured with reference to the vibration modes of the floor. Finally, according to the applying functions in construction of the floor, the peak acceleration was used as an index to evaluate the vibration comfort of the suspended floor. The results show that the suspension floor has significant vibration response and a certain degree of vibration comfort under pedestrian loads. The type and route of human-induced excitation have a significant impact on the vibration comfort of the floor.  

Keywords:suspended floor； vibration mode； crowd load excitation； human-induced vibration； peak acceleration； comfort； dynamic test

作者簡(jiǎn)介:芮佳，博士，教授級(jí)高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:Richard800910@163.com；通信作者：劉開(kāi)放，碩士，Email:1550820476@qq.com。