Railway ground crosstie

Abstract

An elongate railway crosstie for supporting rail tracks on a bed of stones or the like, said tie having a first end, a second end, a length between said first and second ends and a top surface, a bottom surface and a pair of side surfaces between said first and second ends, characterized in that at least one of said side surfaces has a portion of a non-planar stone- embeddable form extending between said first and second ends, so-shaped as to effect reduced lateral and longitudinal slippage of said tie within said bed, while providing a reduction in the volume of material used.

Description

technical field [0001] The present invention relates to an improved railway foundation tie having satisfactory performance requirements of the railway industry while minimizing the amount of material required; and more particularly to a tie formed from a lignocellulosic fiber-resin composite. Background technique [0002] Today, in North America and around the world, the vast majority of railroad ties in use are made of wood tar-impregnated rectangular hardwood or softwood. Typical dimensions for these sleepers are approximately 2.4-2.6m in length, 18-23cm in width and 15-18cm in height. Even sleepers made of newer materials, such as concrete, steel, plastic, or composites, often mimic this standard rectangular design. [0003] One of the key safety and performance issues in railways is lateral track stability, ie the lateral movement of ties perpendicular to the parallel rails, and specifically, the ability of the entire track to resist lateral movement when subjected to f...

AI Technical Summary

Problems solved by technology

[0008] However, none of the aforementioned prior art references provides a sleeper with reduced volume and thus material savings and a sufficiently increased efficiency in preventing lateral slippage of the sleepers and longitudinal movement of the rails.

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