Elastic prefabricated assembly plate type ballast track

Abstract

The invention provides an elastic prefabricated assembly plate type ballasted track which comprises a track panel structure including a rail and a buckle, a prefabricated elastic assembly type track plate formed by assembling frame plates on the periphery, a cover plate in the middle and an elastic cushion layer; a ballasted track bed structure layer; wherein the elastic cushion layer is arrangedon the ballasted track bed structure layer, the frame plate defines a closed space on the elastic cushion layer, the cover plate is arranged in the closed space, and the steel rail is fixed on the frame plate through a fastener. The track structure combines the advantages of a ballasted track and a ballastless track, has good elasticity and good stability, can adapt to large deformation of a lowerfoundation, can keep the geometric state of the track structure for a long time, can greatly reduce the maintenance workload, and can be conveniently and quickly repaired after the lower foundation deforms.

Description

technical field [0001] The invention relates to the field of railway track engineering, in particular to a frame-slab type ballasted track. Background technique [0002] At present, in domestic and foreign railway projects, there are mainly two types of track structures: ballastless track and ballasted track. The ballast bed structure of the ballasted track adopts the accumulation of crushed stone ballast to bear the upper rail structure to ensure the stability of the track frame; the ballastless track does not use gravel ballast, but is made of reinforced concrete of the overall structure. [0003] The ballasted track is composed of steel rails, fasteners, sleepers, gravel track beds, etc. It is characterized by good elasticity, easy to repair when problems such as instability occur, and has low requirements for the bearing capacity and deformation of the underlying foundation, and can adapt to larger However, it is not conducive to ensuring the stability of the track str...

AI Technical Summary

Problems solved by technology

Once the lower foundation is greatly deformed, the upper ballastless track structure will be permanently damaged and cannot be repaired quickly

[0005] In the construction of high-speed railways, due to the high operating speed, the foundation of the lower part of the section with poor geological conditions cannot meet the requirements for laying ballastless tracks. If the ballasted track structure is used, there will be problems such as ballast affecting safety and heavy maintenance and repair work for the track structure. , so a more suitable track structure is needed to adapt to the railway construction in these areas

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