Ballastless track refers to the track structure with concrete, asphalt mixture and other integral foundations instead of granular gravel ballast bed. The sleeper itself is concrete, and the subgrade does not need gravel.
Rails and sleepers are laid directly on concrete subgrade. Ballastless track is an advanced track technology in the world today. It can reduce maintenance, dust and beautify the environment, and the train speed can reach more than 200 kilometers per hour.
Extended data:
On the basis of collecting the basic data of ballastless track diseases at home and abroad, through a large number of indoor and field simulation tests, the maintenance materials, equipment and complete sets of technologies for ballastless track filling layer are developed, which have the design and production capacity of corresponding materials and maintenance supporting equipment, and form a set of maintenance technologies for different slabs, different damage forms, different degrees and parts.
Among them, 5 patents were obtained for materials and 4 patents for equipment, which filled the domestic blank.
People's Network-High-speed Railway Ballastless Track Maintenance Technology fills the gap in China.