不同塔型双塔布置特大型冷却塔山地环境干扰效应研究  

Interference Effects of Wind Pressures on Twin Super-large Cooling Towers with Different Shapes under Complex Hilly Terrains

作　　者：孙文[1] 柯世堂[2] 陈德文[1] 张永飞[1] 

机构地区：[1]山东电力工程咨询院有限公司,济南250013 [2]南京航空航天大学土木工程系,210016

出　　处：《特种结构》2017年第2期60-64,共5页Special Structures

基　　金：江苏省优秀青年基金项目(BK20160083);国家自然科学基金(51208254)联合资助

摘　　要：为研究塔型因素、复杂山形对双塔布置冷却塔干扰效应的影响规律,以国内在建210m高双塔布置冷却塔为例,基于风洞试验获得了不同塔型冷却塔考虑复杂山形双塔布置冷却塔表面压力分布模式。在此基础上,对比分析了三种塔型冷却塔的平均风压和脉动风压分布规律,探讨了考虑复杂山形和周边建筑干扰时塔型因素对干扰效应的影响,最后针对最不利工况进行了复杂山形和塔群之间的风致干扰机理研究。结果表明塔型因素对冷却塔干扰效应影响显著。本文主要结论可为此类复杂地形下双塔组合冷却塔塔型选取提供科学依据。Taking an under-construction 210m twin super-large cooling towers as an example, wind-induced interference effects were investigated for different tower shapes under complex hilly terrains in this paper. The wind pressure distributions on the shell surface were obtained based on wind tunnel tests. The mean pressure and fluctuating pressure distributions of three tower shapes were compared; the wind induced interference effects of surrounding building and complex hilly terrains on different tower shapes was discussed. Then, wind-induced interference effects under the most unfavorable conditions were investigated. The results show that complex hilly terrains has significant effect on flow turbulence and wind pressure distributions. The main conclusions of this paper can provide a scientific basis for the selection of cooling tower shape of twin towers combination in this complex ten-ain.

关 键 词：复杂山形 双塔布置 塔型因素 特大型冷却塔 风洞试验 干扰效应 

分 类 号：TU312.1[建筑科学—结构工程]