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（1 中建三局集團(tuán)有限公司工程總承包公司， 武漢 430064；2 華中科技大學(xué)建筑工程系， 武漢 430074）

［摘要］大跨度曲面屋蓋風(fēng)荷載特性復(fù)雜，大規(guī)模木屋蓋工程在實(shí)際工程應(yīng)用中相對(duì)少見(jiàn)。通過(guò)對(duì)?？谑忻裼慰椭行倪@個(gè)大跨度曲面木屋蓋工程的風(fēng)洞試驗(yàn)研究，系統(tǒng)地分析了在不同風(fēng)向角下曲面木屋蓋風(fēng)荷載的平均壓力系數(shù)分布規(guī)律、等效靜風(fēng)荷載分布規(guī)律和整體風(fēng)荷載效應(yīng)的分布規(guī)律。試驗(yàn)研究結(jié)果表明：屋面整體風(fēng)荷載效應(yīng)主要表現(xiàn)為上吸作用；屋蓋內(nèi)外表面的平均風(fēng)壓系數(shù)主要受風(fēng)向角和測(cè)點(diǎn)位置的影響，表現(xiàn)出復(fù)雜的波動(dòng)性規(guī)律，部分重要測(cè)點(diǎn)處存在多個(gè)平均風(fēng)壓系數(shù)極值和主風(fēng)向角工況。在整體設(shè)計(jì)計(jì)算過(guò)程中，除了需要考慮最大上吸工況外，也要考慮下壓風(fēng)工況的不利作用；在局部設(shè)計(jì)計(jì)算中，應(yīng)重點(diǎn)考慮出現(xiàn)極值的重點(diǎn)區(qū)域和特異點(diǎn)。

［關(guān)鍵詞］?？谑忻裼慰椭行模?曲面木屋蓋； 風(fēng)洞試驗(yàn)； 等效靜風(fēng)荷載效應(yīng)； 平均壓力系數(shù)

中圖分類號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)16-0125-05

Wind tunnel test study on wind load characteristics of large-span curved wooden roof

YU Dihua1, YE Jian1, WANG Liwen1, ZHOU Changlin2, HUANG Xinying1

（1 China Construction Third Engineering Group Co., Ltd., Engineering General Contracting Company, Wuhan 430064, China； 2 Department of Building Engineering, Huazhong University of Science and Technology, Wuhan 430074, China）

Abstract:Wind load characteristics of large-span curved roof are complex, and large scale wooden roof construction is rare in practical engineering applications. Based on the wind tunnel test of the large-span curved wooden roof of Haikou Citizen Tourist Center, the distribution law of average pressure coefficient, equivalent static wind load and overall wind load effect of curved wooden roof under different wind directions were systematically analyzed. The test results show that the overall wind load effect of the roof is mainly the suction effect; the average wind pressure coefficient of the inner and outer surface of the roof is mainly affected by the wind direction angle and the location of the measuring points, showing a complex fluctuation law, and there are several  average wind pressure coefficient extreme values and the main wind angle working conditions at some important measuring points. In the whole design and calculation process, in addition to the maximum suction condition, it is also necessary to consider the adverse effect of the downdraft condition. In the local design calculation, the key areas and special points with extreme value should be considered.

Keywords:Haikou Citizen Tourist Center; curved wooden roof; wind tunnel test; equivalent static wind load effect; average pressure coefficient

作者簡(jiǎn)介：余地華，碩士，教授級(jí)高級(jí)工程師，Email：77336ydh@vip.sina.com。