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工程力学  2015 

圆形截面烟囱风致干扰效应试验研究

DOI: 10.6052/j.issn.1000-4750.2014.05.S046

Keywords: 圆型截面烟囱,风洞试验,静力干扰效应,风压系数,体型系数

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Abstract:

大型火力发电厂的圆形截面烟囱属于高耸结构,是典型的风敏感结构。风荷载是其结构设计的控制荷载之一。该文通过风洞试验研究了圆形截面烟囱单独存在时不同风向角下的表面压力分布变化及双烟囱存在时,在串联、并联两种排列方式下风压分布规律。试验结果表明:当两烟囱串联时,下游烟囱的风压系数变小,表现出遮挡效应;两烟囱并联时,低层的测点受干扰效应较为明显,表现为狭管效应。

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