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Estimation of Stiffness Limit for Railway Bridge Vibration Serviceability  

Jeon, Bub-Gyu (부산대학교, 토목공학과)
Kim, Nam-Sik (부산대학교, 사회환경시스템공학부)
Kim, Sung-Il (한국철도기술연구원, 철도구조물연구실)
Publication Information
Journal of the Korean Society for Railway / v.11, no.5, 2008 , pp. 489-498 More about this Journal
Abstract
In general, deflection limit criteria of bridge design specifications have been considered based on static serviceability and structural stability. Dynamic serviceability induced from bridge vibration actually has not been included in the criteria. Thus, it is necessary for deflection limit to be considered in order to check dynamic service- ability on bridge vibration. In this study, The allowable displacement of Korea Railway Bridge Design Specifications is compared to the frequency domain comfort limit and analyzed france code and japanese code. Korea Railway Bridge Design Specifications is regulated based on the train speed. Such is because the vibration time duration is partly considered. but this criteria is not satisfied with comfort limit. and, it is estimated to be capable to provide deflection limit considering dynamic serviceability. In order to evaluate the dynamic serviceability of various types of railway bridges in current public were selected and their dynamic signals were measured. and the result of the bridge-train interaction analysis according to the changes in bridge stiffness was compared to the comfort limit to suggest the stiff-ness limit to the dynamic serviceability, which should conveniently be applied at the field.
Keywords
Comfort limit; Stiffness limit; Railway bridge; Vibration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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