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（1 湖南大學(xué)土木工程學(xué)院， 長(zhǎng)沙 410082； 2 現(xiàn)代投資股份有限公司， 長(zhǎng)沙 410004;3 貴州大學(xué)空間結(jié)構(gòu)中心， 貴陽(yáng) 550003）

［摘要］單跨多層大跨度裝配整體式正交斜放空間鋼網(wǎng)格盒式結(jié)構(gòu)首次應(yīng)用于實(shí)際工程，樓蓋的舒適度至關(guān)重要。以湘潭九華創(chuàng)新創(chuàng)業(yè)服務(wù)中心單跨（24m）多層（4層）廠房為例，利用環(huán)境激勵(lì)，采用頻域法模態(tài)擬合方法對(duì)該結(jié)構(gòu)進(jìn)行了現(xiàn)場(chǎng)豎向振動(dòng)模態(tài)測(cè)試，獲得了該樓蓋結(jié)構(gòu)豎向自振頻率、振型及豎向加速度。結(jié)果表明，樓蓋豎向振動(dòng)頻率和豎向加速度峰值均符合舒適度要求，該新型結(jié)構(gòu)能夠充分兼顧結(jié)構(gòu)安全性、舒適性與節(jié)約土地資源的要求。

［關(guān)鍵詞］單跨多層； 盒式結(jié)構(gòu)； 現(xiàn)場(chǎng)實(shí)測(cè)； 舒適度

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)16-0079-04

Comfort degree analysis and field measurement of single-span multistoried large-span steel grid cassette structural composite open web floors

Liu Jianjun1,2, Ma Kejian1,3, Wei Yanhui3, Xu Xiangdong1, Chen Jing3, Lu Yaqin3

(1  College of Civil Engineering, Hunan University, Changsha 410082, China; 2 Xiandai Investment  Co., Ltd., Changsha 410004, China; 3 Research Center of Space Structure, Guizhou University, Guiyang 550003, China)

Abstract:Single-span multistoried large-span assembled monolithic orthogonal and diagonal spatial steel grid cassette building structure was first applied in the practical engineering, and the  floor comfort degree is essential. The single-span (24m) and multistoried (4 stories) plant of Xiangtan Jiuhua Service Center for Innovation and Entrepreneurship was taken as an example. Based on environmental excitation, the frequency domain modal fitting method was adopted to carry out on-site vertical vibration modal testing on the structure to obtain the vertical self vibration frequency, vibration mode and vertical acceleration of the floor structure. Research results show that the floor vertical vibration frequency and vertical acceleration peak value are in line with the requirements of comfort degree. The new type structure can fully take into account the requirements of structural safety, comfort degree and land resources saving.

Keywords:single-span multistoried； cassette structure； field measurement； comfort degree

*“十二五”國(guó)家科技支撐計(jì)劃——大型建筑鋼-混凝土組合結(jié)構(gòu)體系關(guān)鍵技術(shù)研究(2011BAJ09B01-01)。

作者簡(jiǎn)介：劉建軍，博士研究生，Email:pattry@126.com。