A method for construction and maintenance of cast-in-place bed slab ballastless track

Abstract

The invention relates to a construction and maintenance operation method of a cast-in-place slab-type ballastless track, and belongs to the technical field of maintenance and maintenance of ballastless track structures of high-speed railways. The basic process is as follows: After determining the track bed slab to be repaired, plant bars on both ends of the track bed slab to be repaired in the first skylight, and then treat it with the assistance of laterally inward or outward shifting of the rails The repair track bed slab is completely cut and chiseled, and finally the line is opened at a limited speed after the temporary sleeper is locked to the rail; sufficient time is left in the second skylight to re-lay the sleeper and pour the track bed slab fast-hardening concrete to restore the track structure. The invention can completely control the defects of the cast-in-place track bed slab ballastless track without cutting the rail. The method is fast in construction, practical and reliable, and economical in cost, and can meet the requirements for disease control of cast-in-place track bed slab ballastless track track bed slabs under various working conditions while ensuring quality and work efficiency.

Description

technical field [0001] The invention relates to a construction and maintenance operation method for a cast-in-place slab-type ballastless track, and belongs to the technical field of maintenance and maintenance of high-speed railway ballastless track structures. Background technique [0002] At present, the cast-in-place bed slab ballastless track of my country's high-speed railway mainly includes CRTS I and CRTS II double-block ballastless track. Among them, the CRTS I type double-block ballastless track is a ballastless track structure type in which prefabricated double-block sleepers are assembled into a rail row, and the sleepers are poured into a uniform and continuous reinforced concrete track bed by in-situ pouring concrete; CRTS II The type double-block ballastless track adopts the method of pouring concrete on site, and the prefabricated double-block sleepers are assembled into a ballastless track structure type in which the rail row is embedded in a uniform and con...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problem that it is difficult to complete the overall replacement of the track bed slab within the skylight time due to the long setting time of the recast concrete when the track bed slab of the cast-in-place track bed slab type ballastless track is replaced and the method currently used Due to the drawbacks of cutting the rails during partial treatment, a method is invented that is suitable for implementation within the skylight time without cutting the rails, and can treat the defects of the cast-in-place track bed slab ballastless track.

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