局部受損低矮房屋平均風(fēng)壓特性試驗研究
周戟，竇遠(yuǎn)明，孫吉書
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周戟，竇遠(yuǎn)明，孫吉書（河北工業(yè)大學(xué)土木工程學(xué)院，天津 300401）［摘要］通過風(fēng)洞試驗對村鎮(zhèn)地區(qū)常見的帶有硬山擱檁的雙坡屋面風(fēng)壓規(guī)律進(jìn)行研究，討論了房屋在完全封閉、門窗洞口打開以及屋面開洞三種情況下的屋面外部、內(nèi)部平均風(fēng)壓系數(shù)在不同方向角下的分布特性。試驗結(jié)果表明：硬山擱檁雙坡屋面在風(fēng)向角為50°，60°時，外屋面角部易破壞；屋檐下部的風(fēng)壓系數(shù)隨屋面坡度的改變而改變；門窗開洞時內(nèi)屋面風(fēng)壓會加大屋面荷載；屋面開洞對降低屋面風(fēng)荷載起到有利作用。［關(guān)鍵詞］低矮房屋；風(fēng)洞試驗；風(fēng)壓系數(shù)；硬山擱檁屋面中圖分類號：TU312-1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2012)07-0134-05Test study of average wind pressure on local damaged low-rise buildingsZhou Ji, Dou Yuanming, Sun Jishu(School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China)Abstract: Based on wind tunnel test, the wind pressure distributions were studied for gable roofs laying aside purlin of low-rise building models. The distribution characteristics of mean pressure coefficient on inside and outside roofs of the buildings which were completely closed, the buildings with opened doors and windows and the buildings with opened holes on roofs were respectively discussed. The experimental results show that the corners of outer roofs are easier to be destroyed in wind direction angle of 50°and 60°. The pressure coefficients below eaves vary with the angle of roofs. When the doors and windows are opened, the pressure inside roofs would increase the load of roofs. When there are holes on roofs, the load of roofs would decline.Keywords: low-rise building; wind tunnel test; wind pressure coefficient; purlin roof作者簡介：周戟，碩士，講師，Email：zjzj-1978@163.com。參考文獻(xiàn)［1］葛學(xué)禮,朱立新,于文,等 浙江蒼南縣“桑美”臺風(fēng)建筑災(zāi)害與抗風(fēng)技術(shù)措施［J］ 工程質(zhì)量,2006(10):18-22.［2］UEMATSU Y, MIYOSHI T. Wind damage to cladding of residential houses due to typhoon in the Tohoku District, Japan, Tohoku ［J］. Journal of Natural Disaster Science, 1998, 34(2):155-164.［3］趙雅麗，全涌，黃鵬，等．典型雙坡屋面風(fēng)壓分布特性風(fēng)洞試驗研究［J］．同濟大學(xué)學(xué)報：自然科學(xué)版，2010,38(11):1586-1592.［4］BLACKMORE P A. Load reduction on flat roofs the effect of edge profile ［J］. Journal of Wind Engineering and Industrial Aerodynamics，1988, 29(8):89-88.［5］YASUSHI UEMATSU, NICHOLAS ISYUMOR. Wind pressures acting on lowrise buildings［J］. Journal of Wind Engineering and Industrial Aerodynamics，1999,82(8):1-25.［6］GINGER J D, LETCHFORD C W. Net pressures on a low-rise full-scale building［J］. Journal of Wind Engineering and Industrial Aerodynamics，1999,83(11):239-250.［7］STATHOPOULOS T, LUCHIAN H. Wind-induced forces on eaves of low buildings［J］. Journal of Wind Engineering and Industrial Aerodynamics，1994,52(6):249-261.［8］付國宏.低層房屋風(fēng)荷載特性及抗臺風(fēng)設(shè)計研究［D］.杭州：浙江大學(xué)，2002.
