A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In situ impact testing of a light-rail ballasted track with tyre-derived aggregate subballast layer
In this study, the dynamic behaviour of ballasted track with and without tyre-derived aggregate (TDA) as subballast layer was assessed using impulse-response (IR) test. For this purpose, a prototype of a ballasted track was established and many IR tests were carried out. The obtained results were represented in three different kinds of velocity-time, velocity-distance and velocity-frequency curves. Processing of the obtained results revealed that TDA efficiency in terms of vibration reduction was in the range of 17-46 dB when the impact was applied to the ballast and it was in the ranges of 6-32 dB and 6-47 dB while impact locations were on the sleeper and rail, respectively. Overall, it was proven that TDA with the particle size of 5-50 mm and thickness of 200 mm reduced by 6-47 dB in vertical vibrations with the dominant frequency range of 32-63 Hz.
In situ impact testing of a light-rail ballasted track with tyre-derived aggregate subballast layer
In this study, the dynamic behaviour of ballasted track with and without tyre-derived aggregate (TDA) as subballast layer was assessed using impulse-response (IR) test. For this purpose, a prototype of a ballasted track was established and many IR tests were carried out. The obtained results were represented in three different kinds of velocity-time, velocity-distance and velocity-frequency curves. Processing of the obtained results revealed that TDA efficiency in terms of vibration reduction was in the range of 17-46 dB when the impact was applied to the ballast and it was in the ranges of 6-32 dB and 6-47 dB while impact locations were on the sleeper and rail, respectively. Overall, it was proven that TDA with the particle size of 5-50 mm and thickness of 200 mm reduced by 6-47 dB in vertical vibrations with the dominant frequency range of 32-63 Hz.
In situ impact testing of a light-rail ballasted track with tyre-derived aggregate subballast layer
Esmaeili, Morteza (author) / Rezaei, Nazanin
2016
Article (Journal)
English
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