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（1 湖南大學(xué)土木工程學(xué)院， 長(zhǎng)沙 410082；　2 貴州大學(xué)空間結(jié)構(gòu)研究中心， 貴陽(yáng) 550003；3 東南大學(xué)土木工程學(xué)院， 南京 210096）

［摘要］以貴州省博物館紅軍長(zhǎng)征館為例，利用環(huán)境激勵(lì)，采用頻域法模態(tài)擬合方法對(duì)該大跨度U形鋼-混凝土組合空腹夾層板樓蓋進(jìn)行了現(xiàn)場(chǎng)豎向振動(dòng)模態(tài)測(cè)試和人員作用下的舒適度分析，得到了該樓蓋結(jié)構(gòu)前6階豎向自振頻率、振型、豎向加速度時(shí)程曲線以及實(shí)測(cè)加速度的最大值，采用有限元分析方法對(duì)實(shí)測(cè)自振頻率和振型進(jìn)行了對(duì)比分析。分析結(jié)果表明：模態(tài)分析中樓蓋豎向第1階自振頻率的有限元分析結(jié)果和實(shí)測(cè)結(jié)果均滿足現(xiàn)行規(guī)范要求；舒適度分析中樓蓋豎向峰值加速度實(shí)測(cè)結(jié)果滿足規(guī)范小于0-005g的要求，不會(huì)引起人員不適；由于隔墻和約束的原因?qū)е掠邢拊治鼋Y(jié)果與實(shí)測(cè)結(jié)果不一樣，但是相差大小在正常范圍內(nèi)。

［關(guān)鍵詞］U形鋼-混凝土組合空腹樓蓋； 實(shí)測(cè)分析； 有限元分析； 舒適度

中圖分類(lèi)號(hào)：TU398文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)24-0074-05

Measurement and analysis of comfortableness of large-span U\|shaped steel-concrete composite  hollow sandwich floor

Sun Jingming1, Ma Kejian2, Liu Zhuoqun3

（1 College of Civil Engineering, Hunan University, Changsha 410082, China;2 Space Structures Research Center, Guizhou University, Guiyang 550003, China;3 School of Civil Engineering， Southeast University， Nanjing 210096， China）

Abstract:Taking the Red Army Long March Project of Guizhou Museum as an example,  frequency domain modal fitting method was used to conduct field vertical vibration modal test and comfortableness analysis of the large-span U-shaped steel-concrete  composite hollow sandwich floor by using environmental excitation and human action. The first six orders of vertical natural frequencies, vibration modes, vertical acceleration time-history curves and the maximum measured accelerations were obtained. The finite element analysis method was used to compare and analyze the measured natural vibration frequency and vibration mode.  Analysis results show that the finite element analysis results  and measured results of the vertical 1st-order vibration frequency of the floor in the modal analysis meet the requirements of the current specification; in the comfortableness analysis, the measured results of  vertical peak acceleration of the floor meet the  specification requirements of  less than 0-005g, which will not cause non-comfortableness; due to the partition wall and constraints,  finite element analysis results are different from the measured results, but the difference is within  normal range.

Keywords:U-shaped steel-concrete composite hollow floor; measurement and analysis; finite element analysis; comfortableness

*國(guó)家“十二五”科技支撐計(jì)劃項(xiàng)目（2011BAJ08B02）。

作者簡(jiǎn)介：孫敬明，博士研究生，Email：gzdxyjsjsm@163.com。