Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Damping Estimation of Railway Bridges Using Extended Kalman Filter

확장형 칼만 필터를 이용한 철도교의 감쇠비 분석

  • 박동욱 (부산대학교 사회환경시스템공학과) ;
  • 김남식 (부산대학교 사회환경시스템공학부) ;
  • 김성일 (한국철도기술연구원 철도구조물연구실)
  • Published : 2009.03.20
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Abstract

In high speed railway bridges, dynamic analysis is important because of high passing velocity and moving load at the regular intervals, and damping ratio is a major parameter to predict dynamic responses. In this paper, damping ratios were estimated by using half power band width method and extended Kalman filter according to acceleration signal conditions, and a relationship between estimated damping ratios and representative values of bridge vibration was derived. From the results, damping ratios estimated from total ambient vibration were more reliable than only free vibration part. In case of using extended Kalman filter, the estimated damping ratios varying with RMQ(root mean quad), as one of representative values of bridge vibration, have more feasible trend. Thus, it is shown that further studies on reliabilities of estimated damping ratios are needed.

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References

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Cited by

  1. Dynamic behavior comparison of steel-composite and concrete high speed railway bridges vol.11, pp.4, 2011, https://doi.org/10.1007/s13296-011-4005-8
  2. Field Tests and Resonance Behavior Corresponding to the Damping Ratio of a High Speed Railroad Bridge vol.16, pp.4, 2013, https://doi.org/10.7782/JKSR.2013.16.4.305
  3. Numerical Model Updating Based on Univariate Search Method for High Speed Railway Bridges vol.34, pp.1, 2014, https://doi.org/10.12652/Ksce.2014.34.1.0017
  4. Seismic Performance Evaluation of 500 kV EBA vol.25, pp.7, 2015, https://doi.org/10.5050/KSNVE.2015.25.7.496