1. Evaluation of the Dynamic Behaviour of Railway Soil Foundations using In-Situ Buried Instrumentation
- Author
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Fernando Lopez-Caballero, Bonilla, F., Costa D Aguiar, S., Voivret, C., Laboratoire de mécanique des sols, structures et matériaux (MSSMat), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), IFFSTAR, SNCF : Innovation & Recherche, SNCF, and SNCF Réseau [La Plaine st Denis]
- Subjects
Time-frequency analysis ,[SPI]Engineering Sciences [physics] ,High speed railway ,Cross-correlation function ,In-situ testing - Abstract
International audience; The aim of the work, described in this paper, is to propose a method enabling the in-situ mechanical characterisation of railway materials from the use of acceleration records of a downhole seismic instrumentation network installed in a research facility of the national French Railway Company. This is done using some geophysical methods (i.e. interferometry and time-frequency analysis) to analyse the vibrations induced by the dynamic loading of a passing trains. According to the recorded data from the instrumented site, it is shown that the response of rail-embankment-ground system is mainly non-linear elastic.
- Published
- 2016