EOLE: Extension of the RER E (Nanterre, France)

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As part of the extension of the RER E (EOLE), an installation was carried out in Nanterre to create a soft bond (pedestrian/bicycle path) under the railway infrastructures, with a green access ramp.

Background & purpose

• Create a ramp adjacent to the railway embankment to ensure smooth traffic continuous and comfortable.
• Integrate the work into its environment thanks to a green wall.

Technical challenges

• Interface constraints with a major railway structure (SNCF)
• Rainwater management: an infiltration solution was studied, then adapted according to the stability constraints of the embankment (establishment of a management/discharge device depending on the project)
• Coordination of the site with the adjacent structures, in particular the installation of Metallic bridge Above the massif

Solutions implemented

• Realization of a reinforced ground embankment whose wall is a ATALUS® type green wall, made of draining materials and placed on the ground in place (depending on the geotechnical configuration)
• The Metallic bridge Has been pushed/put in place above ATALUS reinforced frame

Result

An access ramp functional, stable and integrated into the landscape, at the service of a smooth connection in dense urban areas, demonstrating the interest of green support for a railway infrastructure project.

Speakers

• Project owner/Project manager: SNCF
• Business: Tinel (for Eiffage Civil Engineering)
• Design office: Sepia GC
• SPS coordinator: Apave