有節(jié)奏運(yùn)動荷載作用下大跨度鋼筋混凝土樓蓋豎向振動舒適度分析
于敬海1，李敬明1，王銀平2
- 摘 要
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于敬海1，李敬明1，王銀平2（1 天津大學(xué)建筑設(shè)計(jì)研究院，天津 300073； 2 天津市團(tuán)泊湖投資發(fā)展有限公司，天津 300074）［摘要］以某學(xué)校風(fēng)雨操場屋頂為研究對象，采用MIDAS/Gen軟件進(jìn)行動力時程分析，研究大跨度鋼筋混凝土樓蓋在有節(jié)奏運(yùn)動荷載作用下的動力響應(yīng)特性，分析結(jié)構(gòu)阻尼比、梁高、板厚、附加荷載、荷載分布形式和荷載類型等因素對大跨度鋼筋混凝土樓蓋結(jié)構(gòu)振動響應(yīng)的影響。結(jié)果表明，增大阻尼比、梁高、板厚和附加荷載，可以減小大跨度鋼筋混凝土樓蓋的振動響應(yīng)。［關(guān)鍵詞］大跨度鋼筋混凝土樓蓋；振動舒適度；有節(jié)奏運(yùn)動；頻率；加速度中圖分類號：TU375.2 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2013)10-0068-03Vibration serviceability analysis on large span RC floor under rhythmic activity loadsYu Jinghai1, Li Jingming1, Wang Yinping2(1 Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China; 2 Tianjin Tuanbo Lake Investment Development Co., Ltd., Tianjin 300074, China)Abstract: Vibration response of the large span RC floor of a school wind and rain playground was studied under the rhythmic activity loads. Dynamic time-historical analysis was carried out by MIDAS/Gen software. The influence of different factors on vibration response of the large span RC floor was studied, such as damping ratio, height of beam, thickness of floor, additional load.The results show that increasing the damping ratio, height of beam, thickness of floor and additional load can reduce the vibration response of the large span RC floor.Keywords: large span RC floor; vibration serviceability; rhythmic activity; frequency; acceleration作者簡介：于敬海，博士，研究員，一級注冊結(jié)構(gòu)工程師，Email：yjh300072@163.com。參考文獻(xiàn)［1］婁宇，黃健，呂佐超．樓蓋體系振動舒適度設(shè)計(jì)［M］．北京：科學(xué)出版社，2012．［2］折雄雄，陳雋．大跨度樓蓋振動舒適度研究綜述［J］．結(jié)構(gòu)工程師，2009，25（6）：144-149．［3］GB 50010—2010混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］．北京：中國建筑工業(yè)出版社，2011．［4］JGJ 3—2010高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］．北京：中國建筑工業(yè)出版社，2011．［5］ALLEN D E, RAINER J H, PERNICA G．Vibration criteria for assembly occupancies ［J］．Canadian Journal of Civil Engineering,1985, 12（3）：617-623．
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