单跨空冷支架结构挡风墙阵风系数风洞试验研究  

Wind tunnel Test for gustiness factor of wind-bread wall of the single-span air-cooled condenser structure system

作　　者：白国良[1,2,3] 赵更歧[1] 赵春莲[4] 李晓文[1,2,3] 冉灏[4] 李红星[4] 唐六九[4] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西部建筑科技国家重点实验室(筹),陕西西安710055 [3]结构工程与抗震教育部重点实验室,陕西西安710055 [4]西北电力设计院,陕西西安710032

出　　处：《西安建筑科技大学学报（自然科学版）》2009年第1期1-5,共5页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50778150);陕西省"13115"科技创新工程重大科技专项(2007ZDKG-39);陕西省工业攻关项目(2006K07-G24);陕西省教育产业化项目(06JC12)

摘　　要：空冷支架结构体型独特,空冷平台以上有较高的挡风墙,性质属于维护结构,但又和结构一起随风振动,与规范上所说的围护结构不同,因此不能直接采用规范给出的阵风系数,抗风计算时仅参考国外一些参数,是否准确无法验证.通过1/150单跨刚性模型风洞试验,考虑风向角、周围建筑物、风机是否转动等因素,得到单跨空冷支架结构挡风墙在不同工况下的阵风系数,并对其分布规律进行分析,提出设计建议.得到的各种参数不仅为空冷支架结构体系的抗风设计提供了依据,而且为我国行业规程关于空冷凝汽器支架结构体系风参数相关条文的进一步修订和完善提供了基础研究资料.The wind-stopping wall on the platform of the wind-cooled condenser structure system belongs to the exterior- protected construction, which vibrates with the structure in the wind. It is different with the traditional wind-stopping wall specified in the code, and should not be calculated with the gustiness factor proposed in the code. Generally, it is designed following the foreign code and the reliability and accuracy is under doubt. In this paper, the gustiness factors and their distributions of single span air-cooled condenser platform under various work conditions are proposed through a wind tunnel test of the 1/150 model considering the wind direction angle and buildings around and the different working conditions. The design suggestion is also presented. The endeavor provides the reference for the design work and the revision and completion of the professional specification of air-cooled condenser platform wind-resistant clause.

关 键 词：空冷支架结构 挡风墙 阵风系数 风洞试验 

分 类 号：TU317[建筑科学—结构工程]