Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Monitoring of Railway Structures of High-Speed Line Bretagne-Pays de la Loire with Bituminous and Granular Sublayers
Tamping and ballast wear, due to dynamic stresses, lead to frequent and costly maintenance operations. To mitigate this problem, an innovative track structure with an asphalt concrete layer under the ballast was built on the Bretagne-Pays de la Loire High-Speed Line (BPL HSL). It is intended, among other things, to reduce the amplitude of the accelerations produced at the passage of High-Speed Trains (HST), which are a major cause of ballast settlements. BPL HSL includes 105 km of asphalt concrete sub-layer under the ballast and 77 km of granular sub-layer. In order to study the dynamic responses of these different structures, four track sections were instrumented using, among others, accelerometers, strain gauges and temperature probes. In this paper, we present the track instrumentation, the acquisition system installed to collect all the measurements, and the comparative results of dynamic and mechanical behavior between structures since July 2017, when the BPL HSL was opened to commercial traffic.
Monitoring of Railway Structures of High-Speed Line Bretagne-Pays de la Loire with Bituminous and Granular Sublayers
Tamping and ballast wear, due to dynamic stresses, lead to frequent and costly maintenance operations. To mitigate this problem, an innovative track structure with an asphalt concrete layer under the ballast was built on the Bretagne-Pays de la Loire High-Speed Line (BPL HSL). It is intended, among other things, to reduce the amplitude of the accelerations produced at the passage of High-Speed Trains (HST), which are a major cause of ballast settlements. BPL HSL includes 105 km of asphalt concrete sub-layer under the ballast and 77 km of granular sub-layer. In order to study the dynamic responses of these different structures, four track sections were instrumented using, among others, accelerometers, strain gauges and temperature probes. In this paper, we present the track instrumentation, the acquisition system installed to collect all the measurements, and the comparative results of dynamic and mechanical behavior between structures since July 2017, when the BPL HSL was opened to commercial traffic.
Monitoring of Railway Structures of High-Speed Line Bretagne-Pays de la Loire with Bituminous and Granular Sublayers
RILEM Bookseries
Di Benedetto, Hervé (Herausgeber:in) / Baaj, Hassan (Herausgeber:in) / Chailleux, Emmanuel (Herausgeber:in) / Tebaldi, Gabriele (Herausgeber:in) / Sauzéat, Cédric (Herausgeber:in) / Mangiafico, Salvatore (Herausgeber:in) / Khairallah, Diana (Autor:in) / Blanc, Juliette (Autor:in) / Hornych, Pierre (Autor:in) / Cottineau, Louis-Marie (Autor:in)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Kapitel: 174 ; 1367-1373
RILEM Bookseries ; 27
26.09.2021
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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