Double-blocked rail without ballast

A ballastless track, double-block technology, applied in track, road, building, etc., can solve the problems of high construction cost, slow construction speed, and difficulty in substructure renovation, and achieve good track insulation performance, small deformation, and durability Good results

Inactive Publication Date: 2006-08-16
CHINA RAILWAY NO 8 ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, there are also track structures that are nearly free of road maintenance operations for trial laying, but due to high construction costs, slow construction speed, and difficulty in repairing the substructure once the deformation is limited, it is limited to some special locations.

Method used

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  • Double-blocked rail without ballast
  • Double-blocked rail without ballast
  • Double-blocked rail without ballast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like Figure 1 to Figure 4 As shown, a double-block ballastless track includes a concrete base 5 and a track bed slab 6 fixed on the base 5. Each node of the upper and lower reinforcement meshes in the track bed slab 6 is insulated by an insulating sleeve 10. The track bed slab 6 The double-block sleeper 4 is connected by pouring. The rail 1 is fixed on the double-block sleeper through the fastener 2. An insulating buffer plate 3 is arranged between the fastener 2 and the sleeper. The double-block sleeper includes two pieces located at both ends of the sleeper. Concrete blocks 7 are connected by steel bar trusses 11. Insulating bolt casings 9 are pre-embedded in the concrete blocks. Upper and lower steel meshes are arranged in the ballast slab. Insulation binding, the two ends of the steel truss pass through two concrete blocks, the bottom steel bars of the steel truss are wrapped in double-block sleepers, the cross-sectional shape of the steel truss is triangular, the ...

Embodiment 2

[0038] like Figure 5 to Figure 9 As shown, a double-block ballastless track includes a concrete base 5 and a track bed slab 6 fixed on the base 5. Each node of the upper and lower reinforcement meshes in the track bed slab 6 is insulated by an insulating sleeve 10. The track bed slab 6 The double-block sleeper 4 is connected by pouring. The rail 1 is fixed on the double-block sleeper through the fastener 2. An insulating buffer plate 3 is arranged between the fastener 2 and the sleeper. The double-block sleeper includes two pieces located at both ends of the sleeper. Concrete blocks 7 are connected by steel bar trusses 11. Insulating bolt casings 9 are pre-embedded in the concrete blocks. Upper and lower steel meshes are arranged in the ballast slab. Insulation binding, the two ends of the steel truss pass through two concrete blocks, and the bottom steel bars of the steel truss are exposed at the bottom of the double-block sleeper. The inner reinforcement nodes are insulate...

Embodiment 3

[0040] like Figure 10 As shown, the concrete base is a subgrade base, and other structures are the same as the double-block ballastless track in which the bottom reinforcement of the steel bar truss described in Embodiment 1 is wrapped in a double-block sleeper.

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PUM

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Abstract

A railway of double block rail bearings includes a concrete base and a rail bed board fastened to the base. All joints of up and down steel frameworks in the rail bed board are insulated by insulation sleeve. The double block rail bearings are concreted into the rail bed board. Rails are fastened to the double block rail bearings by fasteners and in between the fasteners and the rail bearings has insulation buffering backing plate. The two concrete blocks to the two ends of the rail bearings are connected by steel frameworks, which are made by non-recycle placing of reinforcement and with insulation sleeve inside.

Description

technical field [0001] The invention relates to a novel track structure, which is suitable for double-block ballastless tracks of high-speed railways (including passenger-dedicated lines, passenger-freight mixed-transport lines and freight-dedicated lines), urban rail transit and intercity rail transit. Background technique [0002] At present, my country's railways generally use ballasted tracks. The ballasted track has reached the limit of its bearing capacity under the repeated load of high-speed and heavy-duty trains for a long time (while the ballast bed gradually loosens), which is reflected in the increasing damage to the gravel track bed, poor track smoothness, and increased maintenance workload. Larger, less and less available maintenance time, which seriously hinders the development of railways in the direction of high speed and heavy load. There are also trial paving track structures in China that are almost free of road maintenance operations, but they are limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E01B25/00
Inventor 钱振地江成肖俊恒刘振民王智勇吴海涛张雷白昆华吴利清杨先凤王江张志红龚斯昆
Owner CHINA RAILWAY NO 8 ENG GRP CO LTD
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