Ballast and ballastless combined track structure laying method

Abstract

The invention discloses a ballast and ballastless combined track structure laying method. The ballast and ballastless combined track structure laying method comprises the following steps that a trackplate is manufactured; a basic layer is laid; a supporting frame is erected; the track plate is mounted; railway ballast is blown into the bottom of the track plate; airtightness inspection is carriedout; the railway ballast on the two sides of the track plate are rammered and laid; subsequent jointless track laying is carried out. The method has the advantages that a pre-bearing mode is adopted,and higher-precision locating and adjusting needs of a novel track structure are met; a ballast blowing filling mode is adopted, a railway ballast layer is good in density degree and integrality, andthe construction efficiency is higher; the laying method is more flexible, when the lower basic layer deforms, the railway ballast layer can be replenished and adjusted based on the laying method toachieve the maintenance aim, the repairing cost is low, and the repairing efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of railway tracks, in particular to a method for laying a track structure combining ballast and ballastless. Background technique [0002] At present, there are mainly two kinds of track structures: one is a ballasted track, and the other is a ballastless track. [0003] Ballasted track refers to the track whose subrail foundation is stone loose-grained bed, also known as gravel track, which is one of the main forms of track structure. It has the advantages of good elasticity, low price, convenient replacement and maintenance, and good noise absorption characteristics. [0004] The disadvantage of the ballasted track is that the stability of the loose ballast bed is poor, and the geometric shape of the track is prone to change; the bottom area of ​​the sleeper is small, so the stress is large, and the ballast is easy to break. Therefore, the ballasted track requires frequent maintenance and replacement, an...

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Problems solved by technology

[0006] The disadvantage of ballastless track is that the concrete does not have the ability to quickly repair and adjust. Once the underlying foundation changes, the structure will be difficult to adapt, and it is not suitable for the railway line requirements of active geological fault zones.

[0007] At present, there is no combination of ballasted and ballastless track structure laying methods.

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