Condition monitoring of railway transition zones using acceleration measurements on multiple axle boxes
Case studies in the Netherlands, Sweden, and Norway
Li Wang (TU Delft - Railway Engineering)
S. Unsiwilai (TU Delft - Railway Engineering)
Yuanchen Zeng (TU Delft - Railway Engineering)
C. Shen (TU Delft - Railway Engineering)
J.M. Hendriks (TU Delft - Railway Engineering)
J. Moraal (TU Delft - Railway Engineering)
A. Zoeteman (ProRail)
A.A. Nunez (TU Delft - Railway Engineering)
R. P.B.J. Dollevoet (TU Delft - Railway Engineering)
Z. Li (TU Delft - Railway Engineering)
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Abstract
Railway transition zones connecting conventional embankments and rigid struc-tures, such as bridges and tunnels, usually degrade much faster than other railway sections. Efficient health condition monitoring of transition zones is important for preventative track maintenance. In this paper, a methodology for monitoring rail-way transition zones using acceleration measurements on multiple axle boxes (multi-ABA) of a passing train is presented. To showcase its capability, the measurements in the Netherlands, Sweden, and Norway are analyzed and dis-cussed. It is found that different bridges and transition zones exhibit unique char-acteristics including dominant wavelengths and energy distribution. Based on these unique characteristics, the geometry and support conditions at different lo-cations of a transition zone can be evaluated. Higher train speed makes the char-acteristics more pronounced. The results demonstrate that the multi-ABA meas-urement has the potential to evaluate and thus monitor the health conditions of various transition zones.
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