大跨度屋盖结构台风效应的风洞试验与实测  

Wind tunnel test and field measurement of the large-span roof structure under typhoon effect

作　　者：罗尧治[1] 葛梦娇 孙斌[1] 王煜成[1] 

机构地区：[1]浙江大学空间结构研究中心,杭州310058

出　　处：《建筑结构》2014年第19期7-11,共5页Building Structure

基　　金：国家杰出青年科学基金项目(51025828)

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。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.

关 键 词：大跨度屋盖 台风风场 风洞试验 风压系数 现场实测 

分 类 号：TU312[建筑科学—结构工程] TU208.5