An aeroelastic phenomenon induced by lateral -torsional coupling
學年 86
學期 1
發表日期 1998-01-14
作品名稱 An aeroelastic phenomenon induced by lateral -torsional coupling
作品名稱(其他語言)
著者 鄭啟明; Cheng, Chii-ming;  Lu, Po-Chien ;  Tsai, Mun-Wei
作品所屬單位 淡江大學土木工程學系;淡江大學水資源及環境工程學系
出版者
會議名稱 第六屆東亞太平洋結構工程與營建會議研討會=The Sixth East Asia-Pacific Conference on Structural Engineering & Construction
會議地點 臺北市, 臺灣
摘要 When mass center separates from elastic center, high-rise buildings exhibit lateral and torsional coupled vibration modes. This research work was designed to exam this structural coupling induced dynamic behavior through wind tunnel aeroelastic test. Results show that, when the torsion/lateral frequency ratio close to 1.0, building's acrosswind response would unexpectedly decrease. Data analysis also indicates that, at critical wind speed, acrosswind response and vortex shedding process exhibit strong correlation when frequencies are well separated. As frequency ratio drawing close with presence of x-axis eccentricity, correlation between response and vortex shedding will drop substantially. Velocity measurement taken in the wake region also indicates that, when frequency ratio approaches 1, vortex shedding intensity is weakened significantly.
關鍵字 高層建築;側扭轉耦合;動態行為;風洞氣彈力試驗;Highrise Building;Lateral Torsional Coupling;Dynamic Behavior;Wind Tunnel Aeroelastic Test
語言 en
收錄於
會議性質 國際
校內研討會地點
研討會時間 19980114~19980116
通訊作者
國別 TWN
公開徵稿 Y
出版型式
出處 第六屆東亞太平洋結構工程與營建會議研討會論文集第三冊=Proceedings of the Sixth East Asia-Pacific Conference on Structural Engineering & Construction: Tradition, Present, and Future Volume 3, pp.2269-2274
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