Assembly type ballastless track system

Abstract

The invention discloses an assembly type ballastless track system. The assembly type ballastless track system comprises steel rails, fastening systems, an assembly type track slab, a packing layer anda lower foundation. The assembly type track slab comprises multiple unit plates and connecting mechanisms connecting the unit plates, wherein at least two connected unit plates are arranged in the transverse direction of the assembly type track slab, and at least two connected unit plates are arranged in the longitudinal direction of the assembly type track slab. The assembly type track slab is adopted, the large-size and large-weight ballastless track slab is divided into pieces, the factory prefabrication difficulty is reduced, the assembled track slab is small in deformation, transport andlifting are convenient, the replacement and maintenance difficulty is greatly reduced, and the adjusting capacity and the repairing capacity of the track system are enhanced; and an existing base isremoved, the concrete pouring workload on the site is reduced, the use amount of building materials is reduced, meanwhile, the construction speed and the construction efficiency are improved, and whenthe space height is limited, the occupied height of the track system can be reduced as well.

Description

Technical field [0001] The present invention relates to the technical field of rail transportation, in particular to an assembled ballastless track system. Background technique [0002] The track system is a key structural system that directly carries the vehicle load and keeps the vehicle running smoothly in rail transit. It plays a role in the entire wheel-rail system. The track system is generally composed of steel rails, fasteners, sleepers, track beds and lower support layers. . According to the form of the track bed, the track system is divided into two types: ballasted track and ballastless track. The track bed of ballasted track is constructed by ballast, while the track bed of ballastless track is constructed by reinforced concrete structure. Compared with the ballasted track, the ballastless track has obvious advantages such as better integrity, better stability, better track assembly retention, and less maintenance and repair work. [0003] Ballastless track first emer...

AI Technical Summary

Problems solved by technology

[0004] Ballastless track has been widely used in the world, whether it is in the field of national railways or urban rail transit, and has broad prospects, but there are still some problems to be solved, that is, its poor adjustment ability and can be repaired Poor capacity, ballastless track cannot be adjusted when the lower foundation has large settlement, horizontal dislocation or upward arch deformation. and development is hindered

In addition, the prefabricated slab-type ballastless track structure has large track slabs, and there are many problems in manufacturing control, transportation, on-site construction, and maintenance and replacement.

Among the ballastless tracks that have been laid so far, some ballastless track systems are damaged due to excessive deformation of the lower foundation and cannot be used normally. The maintenance and replacement time is long and difficult, which seriously affects the normal operation of rail transit

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