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Keywords: railway track, track transition zone, non-destructive testing, tracks condition monitoring.

Summary

Transition zones in railway tracks are locations with considerable changes in the vertical stiffness of the rail support. In such locations, the vertical stiffness of the track support varies, resulting in amplification of the dynamic forces acting on the track, which ultimately leads to deterioration of track status. This paper presents an experimental tool for measuring of track displacements in the transition zones. The measurement device is based on the video gauge system (VGS) measurement system. The VGS is a contactless mobile device for measuring displacements or deformations. Since the VGS was not specifically developed for railway applications, it has been extensively tested in a laboratory to assess the feasibility of its use to measure the displacements of a railway track. Influence of the system parameters such as the focal length of the lenses, distance and angle of the camera etc. on the accuracy of the measurements has been analysed and the working ranges of these parameters for in situ measurements have been determined. After the laboratory testing, the measurements with the VGS have been performed in the transition zones of a track on a concrete bridge. The results of the measurements have shown that the VGS can successfully be used for measurement of the track displacements. Some features in the measured results typical for the transition zones have been analysed.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 3 Experimental Analysis of the Dynamic Behaviour of a Railway Track in Transition Zones V.L. Markine¹, H. Wang¹ and I.Y. Shevtsov² ¹Delft University of Technology, Delft, The Netherlands ²ProRail, The Netherlands doi:10.4203/ccp.105.3 purchase the full-text of this paper Full Bibliographic Reference for this paper V.L. Markine, H. Wang, I.Y. Shevtsov, "Experimental Analysis of the Dynamic Behaviour of a Railway Track in Transition Zones", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 3, 2014. doi:10.4203/ccp.105.3 Keywords: railway track, track transition zone, non-destructive testing, tracks condition monitoring. Summary Transition zones in railway tracks are locations with considerable changes in the vertical stiffness of the rail support. In such locations, the vertical stiffness of the track support varies, resulting in amplification of the dynamic forces acting on the track, which ultimately leads to deterioration of track status. This paper presents an experimental tool for measuring of track displacements in the transition zones. The measurement device is based on the video gauge system (VGS) measurement system. The VGS is a contactless mobile device for measuring displacements or deformations. Since the VGS was not specifically developed for railway applications, it has been extensively tested in a laboratory to assess the feasibility of its use to measure the displacements of a railway track. Influence of the system parameters such as the focal length of the lenses, distance and angle of the camera etc. on the accuracy of the measurements has been analysed and the working ranges of these parameters for in situ measurements have been determined. After the laboratory testing, the measurements with the VGS have been performed in the transition zones of a track on a concrete bridge. The results of the measurements have shown that the VGS can successfully be used for measurement of the track displacements. Some features in the measured results typical for the transition zones have been analysed. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £45 +P&P)
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