Ballastless track system

Abstract

The invention provides a ballastless track system, which comprises a base (16), a track slab (12), a pouring layer (14), a connecting piece (13), two rows of track bearing platforms (11, 11'') and steel tracks (10), wherein the track slab (12) is arranged above the base (16); the pouring layer (14) is arranged between the base (16) and the track slab (12); the pouring layer (14) is formed by filling dense concrete emulsified asphalt cement mortar or resin mortar, and the inside of the pouring layer (14) is of a steel bar structure; the first end of the connecting piece (13) extends into the track slab (12), and the second end of the connecting piece (13) extends into the pouring layer (14); the two rows of track bearing platforms (11 and 11') are arranged on the track slab (12) in parallel; and the steel tracks (10) are arranged on the track bearing platforms (11 and 11'). The ballastless track system has the advantages of high reliability, good durability, easiness in construction and maintenance.

Description

technical field [0001] The invention relates to a track system, in particular to a ballastless track system. Background technique [0002] The structure of ballastless track is accepted by high-speed railways all over the world because of its high smoothness, high stability, high durability and high reliability. Ballastless track structure is also widely used in high-speed railways in my country. At present, there are many types of ballastless track structures at home and abroad, generally including two structural systems of unit and longitudinal connection. [0003] The technical characteristics of different types of ballastless track are compared and analyzed. The unit ballastless track mainly includes structural layers such as track slab, pouring layer and base. Among them, the pouring layer is a key structural layer for elastic adjustment of ballastless track structure and force transmission support, which directly affects the fast and safe operation of high-speed train...

AI Technical Summary

Problems solved by technology

The track slab unit is set up, the structural bearing and force transmission are clear, and the maintainability is strong. However, its disadvantage is that the construction of the convex block is cumbersome. There will be a gap phenomenon, and the longitudinal end of the track slab is prone to warping, which will undoubtedly have an adverse effect on the train's stability, comfort and durability of the track system

[0004] The longitudinally connected slab ballastless track adopts polished prefabricated slabs with pre-cracks, and the slabs are connected longitudinally, so the track laying accuracy is high; but its connection structure is complex, and its environmental adaptability and maintainability are poor

The structure of the double-block ballastless track is relatively simple, and the ballast slab is poured on site. It has strong adaptability to different types of fasteners, and its construction cost is low; however, the amount of concrete construction is large, and the cracks of the ballast slab are difficult to control

Images