Cold pressing longitudinal connection wet connection type assembly method for prefabricated sleeper plate or track plate type ballastless track

Abstract

The invention discloses a cold pressing longitudinal connection wet connection type assembly method for a prefabricated sleeper plate or track plate type ballastless track. The method comprises the following steps of constructing a foundation under the track; erecting prefabricated sleeper plates; longitudinally connecting and assembling longitudinal steel bars and cold extrusion sleeves in spacing areas, and carrying out fine adjusting and positioning; arranging limiting components; constructing a cast-in-situ layer; and in the spacing areas provided with longitudinal connecting structures and the limiting components at the same time, pouring reinforced concrete on site at the two transverse ends of the spacing areas respectively to wrap and cover the longitudinal connecting structures and the limiting components and form a connection filling part after solidification, so that the multiple prefabricated sleeper plates are assembled to form a track unit with a preset length and form the same stressed structure body. According to the cold pressing longitudinal connection wet connection type assembly method for the prefabricated sleeper plate or track plate type ballastless track, the precision during field laying construction can be improved, disassembly and installation are convenient, the construction difficulty is reduced, the field construction speed is improved, the structure is simple, and the positioning of the sleeper plates or track plates is convenient.

Description

technical field [0001] The invention belongs to the field of ballastless tracks, and more specifically relates to a cold-pressed longitudinal joint wet-joint assembly method of prefabricated sleeper panels or track-slab ballastless tracks. 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-compacting concrete filling layer laid on the base or supporting layer The...

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

Images