教師資料查詢 | 類別: 期刊論文 | 教師: 羅元隆 LO, YUAN-LUNG (瀏覽個人網頁)

標題:Simultaneous Measurement of Wind Pressures and Displacements on Tall Building
學年105
學期2
出版(發表)日期2017/03/01
作品名稱Simultaneous Measurement of Wind Pressures and Displacements on Tall Building
作品名稱(其他語言)
著者Yong Chul Kim; Yuan-Lung Lo; Sung-Won Yoon
單位
出版者
著錄名稱、卷期、頁數Journal of Korean Association for Spatial Structures 17(1), p.77-84
摘要Vortex-induced vibration and instability vibration of tall buildings are very important fluid-structure interaction phenomenon, and many fundamental questions concerning the influence of body movement on the unsteady aerodynamic force remain unanswered. For tall buildings, there are two experimental methods to investigate the characteristics of unsteady aerodynamic forces, one is forced vibration method and the other is free vibration method. In the present paper, a free vibration method was used to investigate the unsteady aerodynamic force on tall building whose aspect ratio is 9 under boundary layer simulating city area. Wind pressures on surfaces and tip displacements were measured simultaneously, and the characteristics of tip displacements and generalized forces were discussed. It was found that variation of across-wind displacements showed different trend between the case when wind speed increases and wind speed decreases, and the fluctuating generalize forces in across-wind direction of vibrating model are larger than that of static model near the resonant wind speed and approach to the static value. And for higher wind speed range, there were two peaks in across-wind power spectra of generalize forces of vibrating model, which means that two frequency components are predominant in unsteady aerodynamic forces.
關鍵字Unsteady aerodynamic force;Instability vibration;Tall building;Free vibration method
語言其他
ISSN2287-7401
期刊性質國外
收錄於
產學合作
通訊作者Yong Chul Kim
審稿制度
國別韓國
公開徵稿
出版型式,電子版
相關連結
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