Vibration Source Localization along Railway Tracks
Ground-borne vibration from railway traffic is an increasing problem in urbanized areas and measures are often needed to minimize its effects on the environment. An important question when dealing with railway problems is to identify the source(s) of vibration emitted along the railway track. Once this information is available, it is often possible to mitigate the problem by improving stiffness of the railway track and/or to upgrade worn-out or damaged rail sections and turnouts.
This paper describes a method which makes it possible to determine the locations of track sections which are likely to emit strong ground vibration. A purpose-built track-bound vehicle which can be vibrated continuously at different frequencies can identify track sections having unfavorable dynamic foundation conditions. A theoretical concept is proposed to calculate the potential of energy emission from the vehicle moving along the track.
Further, an innovative method is presented which makes it possible to determine the location of vibration sources by measurement of ground vibrations from existing railway traffic. This information can be used to determine the location of track sections where remedial measures are needed. Results are presented, illustrating application of the concepts, which can also be applied to other types of vibration problems.
KeywordsDynamic Stiffness Ground Vibration Peak Particle Velocity Railway Track Vibration Source
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- 1.Berggren, E.: Railway Track Stiffness – Dynamic Measurement and Evaluation for Efficient Maintenance, Doctoral Thesis, Royal Institute of Technology, Stockholm (2009)Google Scholar
- 2.With, C.: Train-Induced Vibrations on Embankments and in Buildings - Prediction and Validation of Some Models, Doctoral Thesis, Royal Institute of Technology, Stockholm (2008)Google Scholar
- 3.Hall, L.: Simulations and Analyses of Train-Induced Ground Vibrations – A Comparative Study of Two- and Three-Dimensional Calculations with Actual Measurements, Doctoral Thesis, Royal Institute of Technology, Stockholm (2000)Google Scholar
- 4.Bahrekazemi, M.: Train-Induced Ground Vibration and Its Prediction, Doctoral Thesis, Royal Institute of Technology, Stockholm (2004)Google Scholar
- 5.Wenander, K.: Models of Train Induced Vibrations in Railway Embankment - Analytical Solutions and Practical Applications, Master of Science Thesis. Royal Institute of Technology, Stockholm (2004)Google Scholar
- 6.Krylov, V.V.: Generation of Ground Vibration Boom by High-speed Trains. In: Krylov, V.V. (ed.) Noise and Vibration from High-speed Trains, pp. 251–283. Thomas Telford Publishing, London (2001)Google Scholar
- 7.Bodare, A., Petek, K.: Sub and Super Seismic Train Induced Ground Vibrations – Theoretical Considerations and Test Results. In: Proceedings of Environmental Vibrations – Prediction, Monitoring, Mitigation and Evaluation 2005, Okayama, pp. 3–10 (2005)Google Scholar
- 8.Kinsler, L.E., Frey, A.R., Coppens, A.B., Sanders, J.V.: Fundamentals of Acoustics. John Wiley & Sons, Inc., Chichester (1982)Google Scholar