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http://dx.doi.org/10.5050/KSNVN.2007.17.7.632

Dynamic Characteristics of High-speed Railway Steel Bridges  

Lee, Jung-Whee (RIST 강구조연구소 토목고조연구실)
Kim, Sung-Il (한국철도기술연구원)
Kwark, Jong-Won (한국철도기술연구원)
Lee, Pil-Goo (RIST 강구조연구소 토목고조연구실)
Yoon, Tae-Yang (RIST 강구조연구소 토목고조연구실)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.17, no.7, 2007 , pp. 632-637 More about this Journal
Abstract
The dynamic behavior of two steel bridges crossed by the Korean High Speed Train(KHST) has been investigated experimentally and the results are compared with the specification requirement of BRDM and other typical PSC Box bridge's responses. The investigated bridges are a 2-girder steel bridge of 1@40m span length(E-Won Bridge), 2@50m span length (Ji-Tan Bridge), and a PSC Box girder bridge of 2@40m span length (Yeon-Jae Bridge). A set of experimental tests were performed during operation of KHST, and a number of accelerometers, LVDTs and ring-type displacement transducers were utilized for measurement of three kinds of dynamic responses (acceleration, deflection, and end-rotation angle). Measured responses show that the vertical deflections and end-rotation angles of the three bridges are all satisfying the spec. requirement with large margin, but it was also found acceleration responses which are very close or exceed the limit value. Most of the excessive acceleration responses were found when the passing velocity of the KHST is close to the critical velocity ($V_{cr}$) which causes resonance. No noticeable differences of dynamic responses due to the different materials(steel or concrete) could be found within these experimental results.
Keywords
High-speed Train; Dynamic Behavior; Steel Bridge; Vibration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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