UNCONVENTIONAL TRACKS. LAYING OF PRE-STRESSED CONCRETE SLAB TRACK AT NEUILLY-SUR-MARNE

A concrete slab track 300 m long has been constructed on the SNCF Outer Ring line around Paris used almost exclusively by freight trains. Speed is limited to 90 km/h, a high proportion of 20-ton axle loads are handled and traffic level is 100,000 tons per day. Subgrade is mediocre clay embankment. The behavior of the prestressed slab laid directly on this subgrade should permit rapid appraisal of this construction. After being subjected to 40 million tons of traffic, the indications are that maintenance should be low. It was determined that this method of construction would be costly, even if highly mechanized. The concrete seems subjected to small stresses and that the prestressing is only necessary to prevent cracks initiated by thermal effects.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1975-10

Media Info

• Features: Figures;
• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Concrete slab track; Prestressed concrete; Railroad tracks; Structural design
• Identifier Terms: Societe nationale des chemins de fer francais
• Uncontrolled Terms: Track design
• Old TRIS Terms: Question d87
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00052740
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: D87/RP 14/E
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM