Citation

Cervi GE. Transp. Res. Rec. 1986; 1071: 57-63.

Copyright

(Copyright © 1986, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

A modern track has to cope with modern rolling stock and increasing load and speed and has to be cost-effective. This is why the French national railroads have developed continuous welded rails on their main lines. As a result, new techniques are being developed to weld or glue switches and crossings into continuous welded rail track. Also, it is essential to increase the resistance of the material to make it more cost effective (longer lifetime, less maintenance). The results of this effort to improve cost effectiveness and cope with increasing loads and speeds are tangent, constant, or continuously varying radius geometry; flexible, thick-web, solid switch points (high or low web); solid cast manganese steel frogs (glued or welded); movable point frogs; and concrete and very hard wood ties.

Language: en

Keywords

RAILROAD PLANT AND STRUCTURES; STEEL; MANGANESE AND ALLOYS; RAILS - Welding