Construction and maintenance operation method of cast-in-place roadbed slab type ballastless track

Abstract

The invention relates to a construction and maintenance operation method of a cast-in-place roadbed slab type ballastless track, and belongs to the technical field of maintenance and repair of high-speed railway ballastless track structures. The basic process is that: after determining a roadbed slab in need of renovation and repair, steel bars are embedded in the roadbed slab at the two ends outside a to-be-repaired roadbed slab segment in a first skylight, then the to-be-repaired roadbed slab is completely cut and ripped away by the aid of laterally inward or outwardly shifting steel rails,and finally after the steel rails are locked by temporary sleepers, the line is opened; and enough time is left for re-lay sleepers in a second skylight, and roadbed slab rapid-hardening concrete is cast, to restore the track structure. The method can completely remedy the disease of the cast-in-place roadbed slab type ballastless track without cutting the steel rails. The method is quick in construction, practical and reliable and cost-effective, and can be applied to the requirements of the disease remediation of the cast-in-place roadbed slab type ballastless track under various working conditions while the quality and work efficiency are guaranteed.

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...

Examples

Embodiment Construction

[0035] The implementation and beneficial effects of the present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0036] The embodiment of the present invention provides a method for construction and maintenance of cast-in-place bed slab ballastless track, the method specifically includes the following contents and procedures (see attached figure 1 ).

[0037] (1) On-site investigation of cast-in-place ballastless track disease conditions, to determine the need for remediation.

[0038] (2) The track bed slabs at both ends of the track bed slab section to be rehabilitated shall be drilled and reinforced.

[0039] (3) Thoroughly cut and chisel off the track bed slabs and sleepers at the parts to be treated.

[0040] (4) After laying temporary sleepers and locking rails, open the line at a speed limit.

[0041] (5) Remove temporary sleepers.

[0042] (6) Re-lay the prefabricated sleepers and configure the steel ba...

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...

Examples

Embodiment Construction

[0035] The implementation and beneficial effects of the present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0036] The embodiment of the present invention provides a method for construction and maintenance of cast-in-place bed slab ballastless track, the method specifically includes the following contents and procedures (see attached figure 1 ).

[0037] (1) On-site investigation of cast-in-place ballastless track disease conditions, to determine the need for remediation.

[0038] (2) The track bed slabs at both ends of the track bed slab section to be rehabilitated shall be drilled and reinforced.

[0039] (3) Thoroughly cut and chisel off the track bed slabs and sleepers at the parts to be treated.

[0040] (4) After laying temporary sleepers and locking rails, open the line at a speed limit.

[0041] (5) Remove temporary sleepers.

[0042] (6) Re-lay the prefabricated sleepers and configure the steel ba...

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