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(湖南大學(xué)建筑安全與節(jié)能教育部重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410082)
［摘要］通過(guò)對(duì)全尺寸低矮房屋的現(xiàn)場(chǎng)實(shí)測(cè)，分析了不同風(fēng)向角的屋面風(fēng)壓系數(shù)的分布規(guī)律，同時(shí)對(duì)迎風(fēng)向屋面角部和邊緣的加密測(cè)點(diǎn)實(shí)測(cè)數(shù)據(jù)進(jìn)行研究，總結(jié)了不同風(fēng)場(chǎng)下該區(qū)域局部風(fēng)壓峰值的分布及其脈動(dòng)規(guī)律。結(jié)果表明，迎風(fēng)向屋沿局部風(fēng)壓遠(yuǎn)比屋面平均風(fēng)壓高，且屋面最大局部風(fēng)壓在斜風(fēng)向產(chǎn)生，驗(yàn)證了該區(qū)域風(fēng)洞試驗(yàn)結(jié)果的有效性、可靠性，并得到了一些有價(jià)值的結(jié)論，為改進(jìn)低矮房屋的設(shè)計(jì)提供了依據(jù)。
［關(guān)鍵詞］低矮房屋；脈動(dòng)風(fēng)壓；峰值風(fēng)壓；風(fēng)壓系數(shù)
Field measurements and analysis of pressures on roof of a low-rise building
Dai Yimin, Li Qiusheng, Li Zhengnong(Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education，Hunan University，Changsha 410082，China)
Abstract:Based on the full-scale measurement of wind efforts on a low-rise building, it investigated the characteristics of pressure coefficients on the roof of the building for different wind azimuths, and summarized the information of the largest suctions(peak negative pressure)on the leading edges and roof corners where flow separate on occured. The results indicate that the corner regions receive the most severe suction, and the results of this study are expected to be valuable for wind-resistant design of low-rise buildings.
Keywords:low-rise buildings; wind fluctuating pressure; wind peak pressure; wind pressur
e coefficients
湖南大學(xué)“985工程”及國(guó)家自然科學(xué)基金(50778072)。
作者簡(jiǎn)介：戴益民，博士研究生，副教授，Email：dymzzy@163.com。
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