- 摘 要
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（浙江大學(xué)空間結(jié)構(gòu)研究中心， 杭州 310058）
［摘要］為研究臺風(fēng)風(fēng)場高湍流特性對大跨度屋蓋結(jié)構(gòu)風(fēng)壓分布的影響，依據(jù)臺風(fēng)“海葵”的實測風(fēng)速時程，確定了風(fēng)洞試驗中模擬臺風(fēng)風(fēng)場的風(fēng)剖面，進(jìn)行了臺風(fēng)風(fēng)場下某體育館屋蓋的測壓風(fēng)洞試驗?？疾炝伺_風(fēng)風(fēng)場下大跨度屋蓋結(jié)構(gòu)的風(fēng)壓分布特性，并與常規(guī)B類風(fēng)場下的風(fēng)壓數(shù)據(jù)以及實測風(fēng)壓數(shù)據(jù)進(jìn)行對比，研究了臺風(fēng)效應(yīng)對大跨度屋蓋結(jié)構(gòu)風(fēng)壓分布的影響。研究表明，臺風(fēng)風(fēng)場和常規(guī)B類風(fēng)場下的平均風(fēng)壓系數(shù)以及脈動風(fēng)壓系數(shù)的分布規(guī)律基本相似，但臺風(fēng)風(fēng)場下的風(fēng)壓數(shù)值較常規(guī)B類風(fēng)場大，而且更接近于實測風(fēng)壓值。
［關(guān)鍵詞］大跨度屋蓋; 臺風(fēng)風(fēng)場; 風(fēng)洞試驗; 風(fēng)壓系數(shù); 現(xiàn)場實測
中圖分類號：TU312,TU208.5 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)19-0007-05
Wind tunnel test and field measurement of the large-span roof structure under typhoon effect
Luo Yaozhi, Ge Mengjiao, Sun Bin, Wang Yucheng
(Space Structures Research Center, Zhejiang University, Hangzhou 310058, China)
Abstract: In order to study the influence of high turbulence characteristics of typhoon wind field on wind pressure distribution of large-span roof structures, wind profile of typhoon wind field was determined based on field measurement of velocity time-history data of typhoon “Haikui” to simulate the typhoon wind field. The wind tunnel test was carried out on the stadium roof under the typhoon wind field. Wind pressure distribution characteristics of the large-span roof structure were studied under typhoon effect. The results were compared with the wind pressure data under conventional B wind field and field measurement to study the influence of typhoon effect on wind pressure distribution of large-span roof structures. Results show that the distribution laws of mean pressure coefficient and fluctuating wind pressure coefficient are similar, but the wind pressure value under typhoon wind field is larger than that under conventional B wind field significantly and is more close to field measurement value.
Keywords: large-span roof; typhoon wind field; wind tunnel test; wind pressure coefficient; field measurement
*國家杰出青年科學(xué)基金項目(51025828)。
作者簡介：羅堯治，教授，博士生導(dǎo)師，Email：luoyz@zju.edu.cn。
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