STUDY OF THE VARIOUS PROTECTIVE LAYERS OF THE TRACK FORMATION FOR BALLAST TRACK

UNTERSUCHUNG VERSCHIEDENER PLANUMSCHUTZSCHICHTEN FUER DEN SCHOTTEROBERBAU

The authors apply several sub-soil deformation modules to calculate stress for the following types of ballast track: without protective layer; with a 30 cm gravel layer; with a 20 cm or 25 cm cemented protective layer. Proposals are made for applications of the various types of protective layer. A cemented protective layer (with an elasticity module of 60,000 kp/sq cm) on ground of average hardness can account for a characteristic ballast coefficient of up to 30 kp/cu cm and a ballast pressure of 3.2 kp/sq cm which can be considered a maximum limit. Therefore, it is advisable to use cemented layers only when the elasticity module of the track formation is less than 500 kp/sq cm under 20 t axle loads. However, above 150 kp/sq cm, the ground must be stabilized and deep draining is necessary.

• Corporate Authors:

  Hestra Verlag

  Holzhofallee 33, Postfach 4244
  6100 Darmstadt 1,   Germany 
• Authors:
  • EISENMANN, J
  • SCHNEIDER, E
• Publication Date: 1975-4

Language

• German

Media Info

• Features: Figures; References;
• Pagination: p. 111-116
• Serial:
  • Eisenbahntechnische Rundschau
  • Volume: 24
  • Publisher: Hestra Verlag

Subject/Index Terms

• TRT Terms: Cement; Drainage; Railroad tracks; Soil stabilization; Stabilized materials; Structural design; Track ballast
• Uncontrolled Terms: Subgrade stability; Track design
• Old TRIS Terms: Ballast stabilization
• Subject Areas: Geotechnology; Hydraulics and Hydrology; Railroads;

Filing Info

• Accession Number: 00129414
• Record Type: Publication
• Source Agency: International Union of Railways
• Files: TRIS
• Created Date: Feb 19 1976 12:00AM