Integral ballastless track

Abstract

The invention discloses an integral ballastless track, aiming to prolong the service life of a track structure and meet the requirement of the ballastless track on stability and comfort. The track comprises a track slab (10), an adjusting layer (20) and a supporting layer (30), wherein the track slab (10) is paved on the adjusting layer (20) along the line extending direction; multigroup pre-stressed steel bars (11) are distributed transversely in the body of each track slab (10) at intervals; a filling layer (13) is arranged in a seam between two adjacent track slabs (10); the pre-stressed steel bars (11) corresponding to the track slabs (10) are vertically connected and apply pre-stress in segment to form the integral track slab. The integral ballastless track has the advantages of track integration improvement, even track rigidness, fulfillment of requirements of the ballastless track on the stability and comfort. The ballastless track effectively solves the problems that the filling layer between track slabs is easily cracked, and vertical ends of the track slabs are easily warped, can reduce the workload for maintaining and repairing the track structure, and improve the service life of the track structure.

Description

technical field [0001] The present invention relates to railway ballastless track, in particular to the structure of ballastless track. Background technique [0002] In recent years, my country is vigorously building high-speed railways and passenger dedicated lines, and more and more ballastless tracks will be laid. Ballastless track structure mainly involves structural layers such as track slab, adjustment layer and support layer. The supporting layer adopts concrete structure, and the adjustment layer laid on the top surface of the supporting layer is the structure layer for ballastless track structure adjustment and force transmission support. The track slab adopts a prestressed reinforced concrete structure. In order to avoid cracking of the slab body, multiple sets of prestressed steel rods are evenly distributed in the horizontal direction of the slab body. The track plate is laid on the adjustment layer along the extension direction of the line. When laying, there ...

AI Technical Summary

Problems solved by technology

Its disadvantage is that after the line runs for a period of time, the filling layer between the longitudinal end faces of two adjacent track slabs will crack, and the longitudinal ends of the track slabs will easily warp, which will undoubtedly affect the smooth operation of the train. performance, comfort and life of the track structure are adversely affected

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