Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2011.10a
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- Pages.2430-2434
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- 2011
A Study of Estimation of Damping Ratio for Railway Bridges
철도교량의 감쇠비 추정에 관한 연구
Abstract
Dynamic response is an important consideration because of the possibility of resonance according to KTX running over a railway bridges. When KTX runs over the bridge at critical speed, dynamic response is very depending on damping ratio. Current damping ratio for design of high-speed railway bridges adopted EUROCODE without verification of domestic railway bridges. The purpose of this study is to obtain the coherent damping ratio of high-speed railway bridges. Free vibration signal after KTX runs over a high-speed railway bridge was applied. The representative value from distribution of damping ratio was considered.
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