Vibration monitoring of railway bridge pier and probability of scour occurrence

Vibration monitoring of railway bridge pier and probability of scour occurrence

Daigo Kawabe, Chul-Woo Kim

download PDF

Abstract. This study aims to propose a way to estimate probability of scour occurrence of a railway bridge pier by means of ambient vibration monitoring. A remote real-time scour monitoring scheme utilizing ambient vibrations of piers is considered as an alternative method for conventional impact test. A stochastic approach to deal with uncertainty of estimated frequencies caused by relatively poor signal to noise of the ambient vibration is discussed. The probability distribution of the identified frequencies in a normal condition is modeled with a stable distribution, and the probability of scour occurrence is estimated using a logistic curve. The validity of proposed method is verified using monitoring vibration data during swollen river water period in the past.

Ambient Vibration, Bridges, Natural Frequency, Probability, Railway, Scour Detection

Published online 3/30/2023, 7 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Daigo Kawabe, Chul-Woo Kim, Vibration monitoring of railway bridge pier and probability of scour occurrence, Materials Research Proceedings, Vol. 27, pp 1-7, 2023


The article was published as article 1 of the book Structural Health Monitoring

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] C. W. Kim, K. Yoshitome, J. Qi, S. Kitagawa, Y. Hamada, Vibration based long-term scour monitoring of railway bridges, International Conference on Structural Dynamics, EURODYN, 2020.
[2] S. K., Au, Fast Beyesian FFT method for ambient modal identification with separated modes, J. Eng. Mech. ASCE. 137(3) (2011) 214-226.
[3] Ministry of Land, Infrastructure, Transport and Tourism, Railway Bureau, Railway structures maintenance management standard and commentary (structural edition), Tokyo, 2007.(in Japanese)
[4] P. V. Overschee, B. De. Moor, Subspace algorithms for the stochastic identification problem, Automatica, 29(3) (1993) 649-660.
[5] Y. Goi, C. W. Kim, Mode identifiability of a multi-span cable-stayed bridge utilizing stabilization diagram and singular values, Smart Structures and Systems 15(2) (2016) 391-411.
[6] C. W. Kim, J. Qi, S. Kitagawa: Ambient vibration monitoring for scour assessment of a railway bridge, SHMII2021, 2021.