Page 232 - 360.revista de Alta Velocidad - Nº 5

López-Bachiller Fernández, Miguel. Sampedro Rodríguez, Ángel. Díaz Minguela, Jesús.

1. Introduction

Much of the success of the high speed train is due to its reliability, along with a large number
of frequencies in the lines that are already exploited. Renfe announcement since the beginning
of its operation in Spain on the refund of the ticket if the delay is more than a quarter of an
hour breaks radically with the idea that associated with the carriage of passengers by rail with
delays and uncertainty of the time of arrival and at this time the AVE (Alta Velocidad Española,
Spanish High Speed) is associated with punctuality and safety arrived at the scheduled time,
well above the air transport.
This is possible thanks to a minimal disruption in maintenance, so it highlights the enormous
importance of having an infrastructure in which the maintenance, although essential, is never
reason to cause delays in the operation of the track.

Using more reliable building materials than the merely natural, together with maintenance
carried out with these same materials facilitates this work.

We currently have new forms of reparation of the platform of the sections on service in cases
which detects the presence of materials not suitable to the function for which were intended,
transforming them through the process of stabilization, which gives an immediate improvement,
improving even more their characteristics as time goes on, without having to take them out and
replace them with others in the short time that we use to have for repairs.
In Spain we have a group of companies with a park of machinery with capacity to stabilize
layers of 0.5 m depth at one time without having to remove them, which allows a great capacity
for repair of damaged layers. These powerful machines are normally accompanied by vibratory
rollers compactor can densify these thicknesses of layer with guarantees, capturing dynamic
plate module reached through compactometers at the same time and keeping these records in
easily readable files which can be used to observe the evolution of the affected area with the
passage of time.

230 360.revista de alta velocidad