00474284

Component

http://onlinepubs.trb.org...trr/1986/1071/1071-011.pdf

https://scholar.google.co...ervi&publication_year=1986

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.

Publication of this paper sponsored by Committee on Railroad Track Structure System Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418783

pp 57-63

1986

Transportation Research Record

0309040655

Print

Figures (14)

Alloy steel; Continuous welded rail; Cost effectiveness; Frogs (Railroads); Geometry; High speed rail; Manganese; Railroad ties; Railroad tracks; Railroad turnouts; Technology

Switches

France

Design; Highways; Railroads

TRIS, TRB

Oct 31 1988 12:00AM

• AN ASSESSMENT OF DESIGN CRITERIA FOR CONTINUOUS-WELDED RAIL ON ELEVATED TRANSIT STRUCTURES
• CONTINUOUS-WELDED RAIL ON BART AERIAL STRUCTURES
• DEVELOPMENT WORK ON SWITCHES AND CROSSINGS BY BRITISH RAIL
• EVOLUTION OF THE RAIL-BOUND MANGANESE FROG
• IN-TRACK PERFORMANCE OF GEOTEXTILES AT CALDWELL, TEXAS
• INSTALLATION FACTORS THAT AFFECT PERFORMANCE OF RAILROAD GEOTEXTILES
• MANGANESE STEEL CASTINGS: NEW TECHNOLOGY FOR WELDING FROGS TO RAIL
• MANUFACTURING, RECLAMATION AND EXPLOSIVE DEPTH HARDENING OF RAIL-BOUND AND SELF-GUARDED MANGANESE FROGS ON THE CHESSIE SYSTEM
• PROCUREMENT AND SELECTION OF DIRECT FIXATION FASTENERS FOR TRANSIT PROJECTS
• RAIL CORRUGATION--EXPERIENCE OF U.S. TRANSIT PROPERTIES
• SEGMENTAL AERIAL STRUCTURES FOR ATLANTA'S RAIL TRANSIT SYSTEM
• THE REDUCTION OF WHEEL/RAIL CURVING FORCES ON U.S. TRANSIT PROPERTIES