翼板角部处理方柱全风向角风致振动性能风洞试验研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (22) : 287-292.

论文

翼板角部处理方柱全风向角风致振动性能风洞试验研究

温青1,2，郭建炜1，龙航1，翟晓亮3，华旭刚*2，孙洪鑫1

作者信息 +

Wind tunnel tests on the wind induced vibration performance of a square cylinder with wing plates in all wind directions

WEN Qing1,2, GUO Jianwei1, LONG Hang1, ZHAI Xiaoliang3, HUA Xugang*2, SUN Hongxin1

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文章历史 +

摘要

方形结构和构件在工程结构中应用广泛，其风致振动问题随着高度和跨度的增加而更加突出，角部处理是方形截面结构工程中常用的一种气动措施。为了研究翼板角部处理对方柱全风向角风致振动性能的影响，开展了标准方柱和翼板角部处理方柱的全风向角节段模型风洞试验，分析了标准方柱和带翼方柱全风向角涡激振动和驰振性能。结果表明：1）翼板角部处理减小了方柱发生涡激振动的风向角范围，但是，最大涡激振动振幅和风速锁定区间明显大于标准方柱，翼板并未改善方柱的涡激振动性能，反而不利于方柱的涡激振动。2）翼板角部处理没有提高方柱的驰振临界风速，但减小了发生驰振的风向角工况，整体而言，翼板角部处理并没有改善方柱的驰振性能。3）在全风向角范围内，带翼方柱观测到涡激振动和驰振耦合状态振动和非耦合状态振动，表明风向角是改变柱体驰振类型的一个重要因素。

Abstract

Square structures and components are widely used in engineering structures, and their wind-induced vibration problems become more prominent with the increase of height and span. Corner treatment is a commonly used aerodynamic measure in square section structural engineering. In order to investigate the effect of wing corner treatment on the wind induced vibration performance of square cylinders in all wind directions, wind tunnel tests were conducted on standard square cylinders and wing corner treated square cylinder in all wind direction section models. The Vortex-induced vibration and galloping performance of standard square cylinders and wing square cylinder in all wind directions were analyzed. The results showed that: 1) The corner treatment of the wing plate reduced the wind direction range of Vortex-induced vibration in the square cylinder, but the maximum amplitude of Vortex-induced vibration and the wind speed locking range were significantly larger than those of the standard square cylinder. The wing plate did not improve the Vortex-induced vibration performance of the square cylinder, but rather was not conducive to the Vortex-induced vibration of the square cylinder. 2) The treatment of wing plate corners did not increase the critical wind speed for galloping of the square cylinder, but reduced the wind direction angle conditions where galloping occurred. Overall, the treatment of wing plate corners did not improve the galloping performance of the square cylinder. 3) at all wind direction, Vortex-induced vibration and galloping coupled vibration as well as uncoupled vibration were observed in winged square cylinders, indicating that wind direction is an important factor in changing the type of galloping vibration of the cylinder.

导出引用

温青1, 2, 郭建炜1, 龙航1, 翟晓亮3, 华旭刚2, 孙洪鑫1. 翼板角部处理方柱全风向角风致振动性能风洞试验研究[J]. 振动与冲击, 2024, 43(22): 287-292

WEN Qing1, 2, GUO Jianwei1, LONG Hang1, ZHAI Xiaoliang3, HUA Xugang2, SUN Hongxin1. Wind tunnel tests on the wind induced vibration performance of a square cylinder with wing plates in all wind directions[J]. Journal of Vibration and Shock, 2024, 43(22): 287-292

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