教師資料查詢 | 類別: 期刊論文 | 教師: 姚忠達 Jong-dar Yau (瀏覽個人網頁)

標題:Impact response of high speed rail bridges and riding comfort of rail cars
學年88
學期1
出版(發表)日期1999/09/01
作品名稱Impact response of high speed rail bridges and riding comfort of rail cars
作品名稱(其他語言)
著者Yau, Jong-dar; Yang, Yeong-bin; Kuo, Shyh-rong
單位淡江大學建築技術系
出版者Kidlington: Pergamon
著錄名稱、卷期、頁數Engineering Structures 21(9), pp.836-844
摘要The vibration of simple and three-span continuous beams traveled by trains moving at high speeds is studied in this paper. Central to this study is the adoption of a dimensionless speed parameter S, defined as the ratio of the exciting frequency of the moving vehicles to the fundamental frequency of the beam. The numerical studies indicate that the moving load model is generally accurate for simulating the bridge response. However, the use of the sprung mass model is necessary whenever the riding comfort of rail cars is of concern. If the characteristic length, rather than the span length, is used for the continuous beam, then both the simple and continuous beams will reach their peak responses at the same critical speed S, when traveled by wheel loads of constant intervals. The rail irregularity, ballast stiffness, suspension stiffness and suspension damping can drastically affect the riding comfort of rail cars traveling over simple beams. Their effects are comparatively small for continuous beams. In conclusion, the design of a high speed rail bridge is governed primarily by the conditions of serviceability, rather than by strength.
關鍵字Bridge; High speed train; Rail bridge; Resonance; Riding comfort
語言英文
ISSN0141-0296
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式紙本
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