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（1 華東建筑設(shè)計(jì)研究院有限公司， 上海 200041;2 上海裝配式建筑技術(shù)集成工程技術(shù)研究中心， 上海 200011）

［摘要］通過實(shí)體風(fēng)洞試驗(yàn)與數(shù)值風(fēng)洞模擬結(jié)果的對(duì)比分析，論證了數(shù)值風(fēng)洞模擬方法應(yīng)用于鏤空網(wǎng)格結(jié)構(gòu)平均風(fēng)荷載模擬的可行性。通過對(duì)比分析箱形截面、工字形截面、平板殼截面對(duì)鏤空網(wǎng)格結(jié)構(gòu)平均風(fēng)荷載模擬結(jié)果的影響，論證了在鏤空網(wǎng)格結(jié)構(gòu)數(shù)值風(fēng)洞模擬中可將窄翼緣工字形截面簡(jiǎn)化為箱形截面。最后，以實(shí)際項(xiàng)目為背景，研究了大跨度鏤空網(wǎng)格結(jié)構(gòu)的風(fēng)荷載特性。結(jié)果表明，鏤空網(wǎng)格結(jié)構(gòu)的水平風(fēng)荷載較大，對(duì)結(jié)構(gòu)設(shè)計(jì)影響明顯。

［關(guān)鍵詞］大跨度屋面； 鏤空網(wǎng)格結(jié)構(gòu)； 風(fēng)荷載； 風(fēng)洞試驗(yàn)； 數(shù)值風(fēng)洞

中圖分類號(hào)：TU312+.1， TU395文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)18-0016-06

Research on wind load of large span hollow grid structure

CUI Jiachun1,2, ZHOU Jian1, PAN Junjun1

(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200041, China;2 Shanghai Engineering Research Center of Assembly Building Technology Integration, Shanghai 200011, China)

Abstract:The comparative analysis on results of the physical wind tunnel test and the numerical wind tunnel simulation was used to demonstrate the feasibility of applying the numerical wind tunnel simulation method to the simulation of the mean wind load of the hollow grid structure. By comparing and analyzing the influence of box section,工-shaped section, and flat shell section on the simulation results of the average wind load of the hollow grid structure, it was demonstrated that the narrow flange 工-shaped section can be simplified into a box in the numerical wind tunnel simulation of the hollow grid structure. At last, the  wind load characteristics of the large span hollow grid structure were studied based on an actual project. The results show that the horizontal wind load of the hollow grid structure is large, which has an obvious influence on the structure design.

Keywords:large span roof； hollow grid structure； wind load； wind tunnel test； numerical wind tunnel

*上海裝配式建筑技術(shù)集成工程技術(shù)研究中心建設(shè)項(xiàng)目(16DZ2250600)。

作者簡(jiǎn)介：崔家春，博士，正高級(jí)工程師，Email: jch_cui@163.com。