周戟，窦远明，孙吉书

  （河北工业大学土木工程学院，天津 300401）

 

［摘要］通过风洞试验对村镇地区常见的带有硬山搁檩的双坡屋面风压规律进行研究，讨论了房屋在完全封闭、门窗洞口打开以及屋面开洞三种情况下的屋面外部、内部平均风压系数在不同方向角下的分布特性。试验结果表明：硬山搁檩双坡屋面在风向角为50°，60°时，外屋面角部易破坏；屋檐下部的风压系数随屋面坡度的改变而改变；门窗开洞时内屋面风压会加大屋面荷载；屋面开洞对降低屋面风荷载起到有利作用。

［关键词］低矮房屋；风洞试验；风压系数；硬山搁檩屋面

中图分类号：TU312-1文献标识码：A文章编号：1002-848X(2012)07-0134-05

 

Zhou 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

作者简介：周戟，硕士，讲师，Email：zjzj-1978@163.com。

 

［1］葛学礼,朱立新,于文,等 浙江苍南县“桑美”台风建筑灾害与抗风技术措施［J］ 工程质量,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］赵雅丽，全涌，黄鹏，等．典型双坡屋面风压分布特性风洞试验研究［J］．同济大学学报：自然科学版，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 lowrise 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］付国宏.低层房屋风荷载特性及抗台风设计研究［D］.杭州：浙江大学，2002.