教師資料查詢 | 類別: 期刊論文 | 教師: 鄭啟明 CHENG CHII-MING (瀏覽個人網頁)

標題:Effects of Deck Shape and Oncoming Turbulence on Bridge Aerodynamics
學年93
學期2
出版(發表)日期2005/03/01
作品名稱Effects of Deck Shape and Oncoming Turbulence on Bridge Aerodynamics
作品名稱(其他語言)
著者Lin, Yuh-yi; Cheng, Chii-ming; 吳重成; Wu, Jong-cheng; Lan, Tsang-lien; Wu, Kuo-ting
單位淡江大學土木工程學系
出版者淡江大學
著錄名稱、卷期、頁數淡江理工學刊=Tamkang journal of science and engineering 8(1), pp.43-56
摘要The influence of deck geometry and oncoming turbulence on the flutter and buffeting behavior of cable-supported bridges were investigated by using wind tunnel section model test. In addition to smooth flow, homogeneous turbulent flow fields with various intensities and integral scales were generated for the aerodynamic coefficient measurements. The flutter wind speed and buffeting dynamic response were evaluated by incorporating the measured aerodynamic coefficients into the analytical model of a cable-stayed bridge. The results show that the width-to-depth ratio, B/H, of bridge deck plays an important role in bridge aerodynamics. Increasing B/H will improve the bridge stability. This study also indicates that the critical flutter wind speed increases monotonically with turbulence intensity, in other words, free stream turbulence tends to enhance the bridge's aerodynamic stability. Using the wind force coefficients and flutter derivatives obtained from smooth flow condition may result in larger buffeting estimation than those obtained from turbulent flows. These calculated results coincide reasonably with the measured results.
關鍵字
語言英文
ISSN1560-6686
期刊性質
收錄於
產學合作
通訊作者
審稿制度
國別
公開徵稿
出版型式
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!