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（1 東南大學(xué)土木工程學(xué)院， 南京 210018； 2 東南大學(xué)建筑設(shè)計(jì)研究院有限公司， 南京 210018)

［摘要］選取自振頻率與峰值加速度雙控標(biāo)準(zhǔn)，對(duì)新型樓蓋進(jìn)行人行荷載下的舒適度試驗(yàn)，分析了各行連接件、步頻、人群規(guī)模、行走路線、人行荷載布置方式等因素對(duì)樓蓋豎向振動(dòng)的影響，結(jié)果表明：跨中連接件對(duì)樓蓋振動(dòng)的影響大于其他位置的連接件；步頻及人群規(guī)模越大，振動(dòng)響應(yīng)越大；最不利的行走路線是沿橫板向行走并通過(guò)低階振型中心；最不利的布載方式是常規(guī)板雙側(cè)布置人群荷載。5種因素對(duì)樓蓋的影響程度由大到小依次為：各行連接件、步頻、人行荷載布置方式、行走路線、人群規(guī)模。選取最不利情況對(duì)樓蓋進(jìn)行了舒適度分析，結(jié)果表明該樓蓋滿足舒適度要求。

［關(guān)鍵詞］預(yù)制; 裝配式; 新型樓蓋; 人行荷載; 峰值加速度; 舒適度

中圖分類號(hào)：TU375.2       文獻(xiàn)標(biāo)識(shí)碼：A       文章編號(hào)：1002-848X(2014)13-0019-05

Experimental study on comfort under pedestrian loads of the  new type of precast assembly floor

Sun Chongfang1, Liang Shuting1, Zhu Xiaojun2

（1 School of Civil Engineering, Southeast University, Nanjing 210018, China; 2 Architectural Design and Research Institute Ltd., Southeast University, Nanjing 210018, China）

Abstract: Natural frequency and peak acceleration are selected as comfort evaluation criteria. Comfort test on the new type of floor diaphragm under the pedestrian load was conducted. Connections of each row, stride frequency, population scale, walking route and arrangement of pedestrian load which influenced the floor vertical vibration were analyzed. The result indicates that: the influence of connections in middle span is larger than those in other location; the larger stride frequency and population scale, the greater the vibration response; the most unfavorable walking route is walking along the transverse seam direction and through the lower-order modal center; the most unfavorable layout of load is bilateral arrangement of pedestrian load on conventional plate. The influencing sequence from big to small in five factors is various row connectors, frequency of walking, crowd loads arrangement, walking route, population size. Comfort analysis of new floor was carried out by selecting the most unfavorable situation. The result indicates that the floor meets the comfort requirement.

Keywords: precast; assembly; new type of floor; pedestrian load; peak acceleration; comfort

*國(guó)家自然科學(xué)基金項(xiàng)目（51208181），國(guó)家“十二五”科技支撐計(jì)劃項(xiàng)目（2011BAJ10B08）。

作者簡(jiǎn)介：孫崇芳，博士，Email:654499641@qq.com。

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