Rerailing platform on high speed line

FACTS

  • Location: Marseille (FR)
  • Line: LGV (Ligne à Grande Vitesse) Sud-Est, North tunnel entrance
  • Client: SNCF RESEAU
  • Products: innoSTRAIL, supports panel, adjusted panel, removable panel and special concrete kerbstone
  • Lenght: Rerailing platform 2 x 19,80 ML – approx. 140 m²
  • Axle load: 17 t
  • Speed: max. 270 km/h
  • Conditions: Rail 60E1, sleepersSATEBA/SNCF VSBGV, Fasting NABLA/STEDEF and NABLA/FBM99
  • Period: December 2022 and March 2023

 

ADVANTAGES

  • Patented high-tech rubber surface with vulcanized corundum ensures excellent slip resistance
  • Perfect system for starting points for maintenance and rescue vehicles as well as for level crossings with medium to high load
  • Adapted design for the LGV high-speed line (270 km/h)
  • Easy removal and maintenance due to removable plates
  • Long service life

AT A GLANCE

23 years ago, the siding platform at the north entrance of the LGV Sud-Est tunnel in Marseille was covered with ecoSTRAIL.
Now this old STRAIL system was to be replaced by new innoSTRAIL panels. The new platform should be homogeneous and flat, optimally integrate the platforms into the level crossing and ensure easy installation and removal for maintenance purposes.

In addition to these features, the challenge was to carry out the entire installation during the night. There was only a time window of two hours available per night. Every morning, the area had to be accessible again for possible fire brigade operations.
The new platform, which extends over two tracks with a length of 19.80 m and covers an area of around 140 m², was covered with the innoSTRAIL system, which is independent of sleeper pitch.

Modified rubber panels were placed between the struts and blocks of the BI-Block sleepers to compensate for height differences.
Customised outer panels with superelevation allow vehicle access to the platform. The decking was divided into three “zones” to allow for quick replacement of panels.

The STRAIL team developed inspection hatches in addition to the finishing slabs to facilitate access to the electrical boxes on the fixed guideway.
In addition, individual kerbs with integrated pressurised water pipes were laid to ensure a water supply to the tunnel during fire brigade operations.
The installation lasted a total of 16 nights with road closures of two to three and a half hours per night. The project was successfully implemented and met all SNCF RESEAU requirements.

Montage Ausbauplatte

Picture 1: Installation of an removable module.

Einbau einer Intervia-Platte

Picture 2: Installation of an outer panel.

Verlegung der Spezialbordsteine.

Picture 3: Installation of the individual kerbs with integrated pressurised water pipes.