双曲冷却塔风致响应机理分析  

Mechanism analysis of wind-induced response for hyperbolic cooling towers

作　　者：田永胜 丁大益 邹云峰[2] 何旭辉[2] 陈政清[3] 牛华伟[3] TIAN Yongsheng;DING Dayi;ZOU Yunfeng;HE Xuhui;CHEN Zhengqing;NIU Huawei(China Wuzhou Engineering Group,Beijing 100053,China;School of Civil Engineering,Central South University,Changsha 410075,China;Wind Engineering Research Center,Hunan University,Changsha 410082,China)

机构地区：[1]中国五洲工程设计集团有限公司,北京100053 [2]中南大学土木工程学院,湖南长沙410075 [3]湖南大学风工程试验研究中心,湖南长沙410082

出　　处：《铁道科学与工程学报》2018年第7期1803-1809,共7页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51508580);湖南省自然科学基金资助项目(2016JJ3149);国家重点研发计划资助项目(2017YFB1201204)

摘　　要：风荷载是冷却塔设计的控制性荷载,风致干扰作用下结构的安全性更是人们关注的重点。基于冷却塔相关设计规范中风压设计曲线的Fourier级数表达式,分析各阶谐波对阻力系数和风致响应的贡献,并以某核电站200 m高冷却塔为例,通过有限元方法对冷却塔风致响应机理进行详细分析与验证。研究成果为认识此类超大型冷却塔风致响应机理和正确选择考察冷却塔风致干扰效应的方法提供参考与依据。Wind loading is the control load in the design of cooling towers, and wind-induced interference attracts more attention of people. Based on the Fourier-series expression of pressure curves given in the relevant specifications, the contributions of each harmonic to both drag coefficient and wind-induced response were analyzed. Taking a 200 m high cooling tower for example, the mechanism of wind-induced response of cooling towers was analyzed and verified using finite element method. The present results reveal further insight into the mechanism of wind-induced response of cooling towers, and provide a reference for selecting appropriate method to investigate wind-induced interference of cooling towers.

关 键 词：冷却塔 风致响应 风荷载 风压曲线 阻力系数 风致干扰 

分 类 号：TU311.3[建筑科学—结构工程]