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http://dx.doi.org/10.7782/JKSR.2013.16.4.305

Field Tests and Resonance Behavior Corresponding to the Damping Ratio of a High Speed Railroad Bridge  

Kim, Sungil (Advanced Infrastructure Team, Korea Railroad Research Institute)
Kim, Hyunmin (Advanced Infrastructure Team, Korea Railroad Research Institute)
Park, Donguk (Seismic Simulation Test Center, Pusan National University Pusan National University Yangsan Campus)
Publication Information
Journal of the Korean Society for Railway / v.16, no.4, 2013 , pp. 305-310 More about this Journal
Abstract
In general, it is difficult to measure dynamic responses of a bridge with stepwise increasing speed of a train during commercial service on a high speed railroad. However, before opening the 2nd stage of the Gyeongbu high speed railroad, there was an opportunity for field tests and measurements of the bridge with stepwise increasing speed(from 170km/ h to 315km/h). The measured responses were compared with the results of a developed bridge/train interaction analysis. Although good agreement was found throughout almost the entire range of speeds, relatively large differences were found in the vicinity of the critical speed at which resonance behavior of the bridge occurs. To investigate the cause of this, reanalyses are performed with re-estimated damping ratios from field tests.
Keywords
Railroad bridge; Moving load analysis; Dynamic behavior; Damping ratio; High speed railroad;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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