（浙江大学空间结构研究中心， 杭州 310058）

［摘要］为研究台风风场高湍流特性对大跨度屋盖结构风压分布的影响，依据台风“海葵”的实测风速时程，确定了风洞试验中模拟台风风场的风剖面，进行了台风风场下某体育馆屋盖的测压风洞试验。考察了台风风场下大跨度屋盖结构的风压分布特性，并与常规B类风场下的风压数据以及实测风压数据进行对比，研究了台风效应对大跨度屋盖结构风压分布的影响。研究表明，台风风场和常规B类风场下的平均风压系数以及脉动风压系数的分布规律基本相似，但台风风场下的风压数值较常规B类风场大，而且更接近于实测风压值。

［关键词］大跨度屋盖; 台风风场; 风洞试验; 风压系数; 现场实测

中图分类号：TU312,TU208.5      文献标识码：A      文章编号：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

*国家杰出青年科学基金项目(51025828)。

作者简介：罗尧治，教授，博士生导师，Email：luoyz@zju.edu.cn。

参考文献

［1］CAO S Y, TAMURA YUKIO, KIKUCHI NAOSHI, et al. Wind characteristic of a strong typhoon［J］. Journal of Wind Engineering and Industrial Aerodynamics, 2009, 97(1): 11-21.

［2］POWELL M D, VICKERY P J, REINHOLD T A. Reduced drag coefficient for high wind speeds in tropical cyclones［J］. Nature, 2003，422(6929):279-283.

［3］戴益民，李正农，李秋胜，等. 低矮房屋的风载特性——近地风剖面变化规律的研究［J］.土木工程学报, 2009, 42(3):44-51.

［4］胡尚瑜，宋丽莉，李秋胜. 近地边界层台风观测及湍流特征参数分析［J］.建筑结构学报, 2011, 32(4):1-8.

［5］SHARMA R N, RICHARDS P J. A reexamination of the characteristics of tropical cyclone winds［J］. Journal of Wind Engineering and Industrial Aerodynamics, 1999,83:21-33.

［6］蒋莹.台风风场下输电塔结构的风效应研究［D］.杭州：浙江大学，2012.

［7］YANG MENG, MASAHIRO MATSUI, KAZUKI HIBI. An analytical model for simulation of the wind field in a typhoon-boundary layer［Ｊ］．Journal of Wind Engineering and Industrial Aerodynamics, 1995,56:291-310.

［8］PANOFSKY H A, DUTTON J A. Atmospheric turbulence: models and methods for engineering applications［M］. New York: Wiley, 1984.

［9］余世策，吴钟伟，冀晓华，等. 边界层风洞多功能流场模拟装置的研制［J］. 实验室研究与探索，2012,31(4):9-11.

［10］KAWAI H. Structure of conical vortices related with suction fluctuation on a flat roof in oblique smooth and turbulent flows［J］. Journal of Wind Engineering and Industrial Aerodynamics，1997, 69-71:579-588.

［11］罗尧治，蔡朋程，孙斌，等. 国家体育馆大跨度屋盖结构风场实测研究［J］. 振动与冲击, 2012,31(3):64-68.

［12］洪江波. 大跨度空间结构风场实测系统验证与应用［D］. 杭州：浙江大学，2012.

［13］孙斌. 基于无线传感系统的大跨度空间结构风效应实测研究［D］. 杭州：浙江大学，2013.