Assembled ballastless track structure and longitudinal connecting structure thereof

Abstract

The invention discloses a longitudinal connecting structure of an assembled sleeper slab-type or a track slab-type ballastless track structure and a ballastless track structure including the longitudinal connecting structure. Two embedded longitudinal steel bars are longitudinally connected through an extrusion sleeve, the butting ends of the two longitudinal steel bars are separately inserted into the two ends of the extrusion sleeve, and the extrusion sleeve deforms and is locked under the extrusion of a portable extruder. According to the longitudinal connecting structure of the assembled sleeper slab-type or the track slab-type ballastless track structure and the ballastless track structure including the longitudinal connecting structure, the accuracy during site laying construction can be improved, disassembly and installation are convenient, the construction difficulty is reduced, the speed of site construction is increased, the structure is simple, and positioning of a sleeper slab or a track slab is convenient.

Description

technical field [0001] The invention belongs to the field of ballastless track, and more specifically relates to a longitudinal connection structure of an assembled sleeper slab type or track slab type ballastless track structure, and a ballastless track structure including the longitudinal connection structure. Background technique [0002] Ballastless track refers to the track structure that uses concrete, asphalt mixture and other integral foundations to replace the loose-grained gravel track bed. Compared with the ballasted track, the ballastless track avoids ballast splashing, has good smoothness, good stability, long service life, good durability, and less maintenance work, and is being used more and more. The structure of slab ballastless track mainly involves structures such as track slab, asphalt mortar or self-compacting concrete filling layer, base or supporting layer, wherein the base or supporting layer adopts concrete structure, and the asphalt mortar or self-c...

AI Technical Summary

Problems solved by technology

In the unit slab ballastless track structure, each track slab after laying and installation is independent. The disadvantage is that after the line runs for a period of time, the track slab and the asphalt mortar filling layer will peel off, and the longitudinal direction of the track slab The end is prone to warping, which will undoubtedly have a negative impact on the smoothness, comfort and life of the track structure of the train

However, this connection method is complex in structure and cumbersome to construct. The gap reserved between the snap ring set on the steel bar sleeve and the steel bar to be connected will also cause the adjacent fabricated sleeper boards or track boards to be out of the same plane. Accuracy is difficult to control

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