三跨空冷支架结构挡风墙阵风系数风洞试验研究  

WIND TUNNEL TEST FOR GUST FACTOR OF WIND-BREAK WALL OF THREE-SPAN AIR-COOLED CONDENSER STRUCTURE SYSTEM

作　　者：赵更歧[1,2] 白国良[1] 李晓文[1] 

机构地区：[1]西安建筑科技大学,西安710043 [2]郑州大学土木工程学院,郑州450002

出　　处：《工业建筑》2009年第3期39-42,共4页Industrial Construction

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)

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,性质属于围护结构,但又与结构一起随风振动,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1/150三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,得到三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。Air-cooled condenser structure system has a wind-bread wall above platform. Whose behavior belongs to an enclosure the of structure, and can vibrate with the wind together with structure. It is different from the enclosures specified by codes, therefore, the gust factor in the code can not be used directly. Through 1/150 three-span model wind tunnel test, taking account of wind angle, the surrounding buildings, whether the fan rotats, it is obtained the gust factor of wind-break wall of three-span air-cooled condenser structure system under different conditions. These parameters not only provide a basis for wind-resistant design, but also provide the basic research data for formulating the professional regulations of our country.

关 键 词：空冷支架结构 挡风墙 阵风系数 风洞试验 

分 类 号：TU312.1[建筑科学—结构工程] TK264.11[动力工程及工程热物理—动力机械及工程]