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http://dx.doi.org/10.7782/JKSR.2012.15.2.154

Experimental Evaluation for Damping Ratio Limit of Railway Bridge according to Structure Types  

Min, Rak-Ki (서울과학기술대학교 철도전문대학원)
Sung, Deok-Yong (대원대학교 철도건설과)
Park, Yong-Gul (서울과학기술대학교 철도전문대학원)
Publication Information
Journal of the Korean Society for Railway / v.15, no.2, 2012 , pp. 154-161 More about this Journal
Abstract
The damping ratio of railway bridge has become one of the most important issues in dynamic design and dynamic stability of railway bridge. In the present study, laboratory and field test were performed for railway bridges such as a twin I-shaped steel composite girder, PSC box, steel box, PSC, IPC, PRECOM, preflex. The damping ratio of railway bridge according to structure types was estimated by logarithmic decrement method. Therefore, magnitude, frequency and amplitude of load did not affect damping ratio of railway bridge. Also, damping ratio limit of steel composite and PSC bridges was evaluated in 1.0%.
Keywords
Railway bridge; Structure type; Damping ratio; Laboratory test; Field test; Resonance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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