超高层双子塔面对面与角对角布局的气动特性与抗风性能比较

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Abstract A comparison study is conducted on aerodynamic characteristics and wind resistance of twin-tower buildings with two configurations, i.e., side-by-side and corner-to-corner, based on wind tunnel testing and aftermath analysis. The purpose of the study is to provide technical references to the optimization design of supertall twin buildings. The results indicate that the performance of the twin-tower buildings to wind effects depends on many factors, including the spacing between the two buildings, the structural dynamic properties, design wind speed, etc. In a lower reduced wind speed, the wind responses of the twin-tower buildings with these two configurations are similar to each other. However, when the reduced wind speed exceeds 7, the twin-tower buildings become quite sensitive to the spacing between the two buildings, and corresponding performance of these two configurations appears very different from each other. At relative spacing of 0.5 or narrower, the corner-to-corner configuration can cause severe wake buffeting, so the side-by-side configuration shows better performance for wind effects. However, as the spacing increases, the wake buffeting in the corner-to-corner configuration becomes less significant. Meanwhile, the corner-to-corner configuration starts to show a more sustainable benefit than the side-by-side configuration in suppressing vortex shedding by aerodynamic interference, which results in a much lower response in the across-wind dynamic response. At a relative spacing of 2, the wind-induced overturning moment of the corner-to-corner configuration is only about 60% of that of the side-by-side configuration.

Key words： high-rise building twin towers building layout aerodynamic characteristics wind induced response wind tunnel test

Received: 17 January 2022 Published: 15 March 2023

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	Articles by authors
	QIN Weifeng
	YANG Xiaoyue
	SHI Junyang
	XIE Jiming

Cite this article:

QIN Weifeng,YANG Xiaoyue,SHI Junyang, et al. Comparison of aerodynamic characteristics and anti-wind performances of super high-rise twin towers with face to face and corner to corner configurations[J]. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(5): 233-244.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I5/233

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