Field instrumentation in order to study the behaviour of a conventional railway platform
Autor/es
Lamas López, Francisco; Cui, Yu-Jun; Robinet, Alain; Dupla, Jean-Claude; Costa D'Aguiar, SofiaFecha
2014-11-06Tipo de documento
conferenceObjectÁrea/s de conocimiento
IngenieríasMateria/s Unesco
3323 Tecnología de Los FerrocarrilesFichero/s
Resumen
The behaviour of a conventional railway platform has been studied by field
monitoring. An experimentation site was first selected among the existing 30.000
kilometers of conventional tracks in France based on different criteria in terms of traffic
type, conditions of the track (rails & sleepers) and type of subgrade soils. The site
selected should also have no maintenance needed since the last renewal. Finally, a site
located in Vierzon (Centre/FR) was selected. A prospection campaign was first
undertaken at the site to determine the position and nature of each soil layer in the
platform. Afterwards, the site was instrumented with different sensors such as
accelerometers, geophones, soil pressure sensors, water-pore pressure sensors, strain
gauges etc. In total, there were more than 40 sensors installed through 1 5 boreholes.
Four different depths from the sleeper to the subgrade were considered. The trains
involved run at different speeds from 80 to 200 km/h, and their axle weights
(locomotives and wagons) vary from 7 t per axle to 22.5 t per axle.