Characteristics of unsteady pressures on slender tall building

淡江大學機構典藏 > 工學院 > 土木工程學系暨研究所 > 期刊論文 > Item 987654321/112848

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题名:	Characteristics of unsteady pressures on slender tall building
作者:	Yuan-Lung Lo;Cheng-Hsin Chang
关键词:	Slender tall building;Unsteady pressure;Free vibration method;Strouhal component;Natural frequency component
日期:	2018-02-21
上传时间:	2018-03-02 12:14:46 (UTC+8)
出版者:	Elsevier
摘要:	This paper investigates the characteristics of unsteady pressures on a vibrating model under low-turbulence and boundary-layer flows. Large and clear differences between static and vibrating models were found in the across-wind direction, but only small differences were found in the along-wind direction. The fluctuating generalized force coefficients of the vibrating model were larger than those of the static model, showing the largest value near the resonant wind speed. Two peaks in power spectra of the generalized force coefficients, the Strouhal component and the natural frequency component, were observed during the lock-in range. The cross-correlations of pressure coefficients became small and the time lag differences became large with increasing wind speed.
關聯:	Journal of Wind Engineering and Industrial Aerodynamics, Vol.174, 344-357
DOI:	10.1016/j.jweia.2018.01.027
显示于类别:	[土木工程學系暨研究所] 期刊論文

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