Ultra-early maintenance system for double-block ballastless track roadbed slab concrete

Abstract

The utility model discloses a double-block type ballastless track roadbed slab concrete ultra-early maintenance system which comprises a plurality of maintenance covers which are connected in a combined mode, each maintenance cover sequentially comprises a maintenance structure and a supporting frame base structure from top to bottom, and a maintenance part comprises a plastic film and geotechnical cloth. The supporting frame base structure comprises an arch-shaped framework and switchable magnets, the switchable magnets are arranged at the bottoms of the two sides of the arch-shaped framework, the magnetism of the switchable magnets can be adjusted and controlled through a switch button, the arch-shaped framework is made of light steel keels, the upper portion of the arch-shaped framework is in a circular tube shape, the diameter of the circular tube is 10 mm, and the base portion is in a flat shape. The plastic film and the geotechnical cloth are connected together and then cover the surface of the arched framework; the maintenance film can be compressed and folded by moving the arched framework to provide an operation space for roadbed slab concrete plastering construction, the risk that roadbed slab concrete is affected by an extreme environment to generate early-stage surface cracking is reduced, and the construction speed is not affected while the surface crack resistance of the roadbed slab concrete is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high -speed railway construction process maintenance technical field, more specifically, the utility model relates to a double -block type ballastless track bed slab concrete super early maintenance system. BACKGROUND

[0002] Ballastless track is widely applied in the construction of high-speed railway in China with its good stability, simple construction method and less maintenance in later period, wherein the double-block type ballastless track is one of main types and is a structure type with longer laying mileage and more mature design and construction at present.

[0003] However, the double-block type ballastless track bed slab is a cast-in-situ reinforced concrete structure, and the construction quality is easily affected by environmental factors, concrete performance and management level and other factors. Through engineering investigation, it is found that the early cracking problem of the ballastless track bed slab concrete is very common, and the surface cracking of the track bed slab concrete is more prominent in high temperature, strong wind and dry weather. The conventional track bed slab concrete maintenance measure is as follows: after the formwork is removed, the track bed slab concrete is first covered with geotextile and sprayed with water for humidification, then thick plastic film is covered on the geotextile, and the geotextile and plastic film are compacted and sealed with soil or square wood.

[0004] The conventional track bed slab concrete maintenance method has late starting time of maintenance, lacks super early maintenance measure for the concrete after pouring and forming, and the geotextile and plastic film compacted with soil or square wood after form removal are often disturbed by strong wind, which is difficult to cope with extreme weather changes, so that the surface of the track bed slab concrete with thin plate structure often appears cracks, seriously affecting the use safety and service durability of the ballastless track bed structure, and causing many troubles for construction delivery acceptance and subsequent operation maintenance and repair. SUMMARY

[0005] The utility model discloses in order to solve the conventional ballastless track bed slab concrete maintenance method difficult to cope with the super early maintenance demand after the concrete pouring, and the maintenance facility after form removal is not easy to be effectively fixed and other problems, provide a double-block type ballastless track bed slab concrete super early maintenance system.

[0006] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] The utility model discloses a kind of double-block type ballastless track bed slab concrete super early curing systems, including combined connection several curing covers, the curing cover from top to bottom includes curing structure and support frame base structure in sequence, wherein curing part includes plastic film and geotextile, support frame base structure includes arch skeleton and switchable magnet, switchable magnet is arranged at the bottom of both sides of arch skeleton, switchable magnet can be controlled magnetism by switch button, arch skeleton material is light steel keel, upper part is circular tube, circular tube diameter is 10mm, base portion is flat shape;Plastic film and geotextile are connected together and covered on the surface of arch skeleton.

[0008] The utility model discloses a kind of double-block type ballastless track bed slab concrete super early curing systems, and the plastic film thickness is 10~12 silk.

[0009] The utility model discloses a kind of double-block type ballastless track bed slab concrete super early curing systems, and the geotextile thickness is 4~5mm, unit area mass is 700g / m 2 ~750g / m 2 .

[0010] The utility model discloses a kind of double-block type ballastless track bed slab concrete super early curing systems, and the arch skeleton height is 0.5m, arch skeleton spacing is 0.8m, arch skeleton width is 2.85m.

[0011] The utility model discloses a kind of double-block type ballastless track bed slab concrete super early curing systems, and the single section curing cover length is 6.4m, curing film covered thereon can be folded and gathered into an arc along the vertical direction of arch skeleton.

[0012] Compared with prior art, the utility model has the following beneficial effects:

[0013] The utility model is prepared into a compressible folding curing cover by the organic combination of composite curing film and foldable arch skeleton, can be adsorbed on the side steel formwork of bed slab concrete by the selective adsorption characteristics of switchable magnet at the bottom of both sides of arch skeleton after bed slab concrete is poured and formed, realizes the super early curing of bed slab concrete, when needing to carry out troweling operation to bed slab concrete, can be compressed folding curing film by moving arch skeleton to provide operating space for bed slab concrete troweling construction, so that the super early curing system and concrete troweling construction are not interfered with each other, reduce the risk that bed slab concrete is affected by extreme environment such as strong wind and high temperature and produces early surface cracking, improve the surface crack resistance of bed slab concrete, without affecting construction speed, with good popularization and application value.

[0014] The utility model will be described in more detail in connection with drawings and examples. DRAWINGS

[0015] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0016] Figure 1 This is a schematic diagram of the present invention;

[0017] The markings in the diagram are: 1. Plastic film; 2. Geotextile; 3. Arch frame; 4. Switchable magnet; 5. Cast-in-place concrete track slab; 6. Steel formwork. Detailed Implementation

[0018] The following description, with reference to the accompanying drawings, further details the specific implementation methods of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the function and working principle of each part, the manufacturing process, and the operation and use methods, so as to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the utility model concept and technical solution.

[0019] like Figure 1 The illustrated dual-block ballastless track slab concrete ultra-early curing system includes several interconnected curing covers. Each curing cover, from top to bottom, comprises a curing structure and a support frame base structure. The curing section includes a plastic film 1 and geotextile 2. The support frame base structure includes an arched frame 3 and switchable magnets 4. The switchable magnets 4 are located at the bottom of both sides of the arched frame 3, and their magnetism can be adjusted via a switch button. The arched frame 3 is made of light steel keel, with the upper part being a cylindrical tube with a diameter of 10mm, and the base being flat. The plastic film 1 and geotextile 2 are connected together and then covered on the surface of the arched frame 3.

[0020] like Figure 1 The plastic film 1 shown has a thickness of 10-12 mils.

[0021] like Figure 1 The geotextile shown has a thickness of 4-5 mm and a unit area mass of 700 g / m². 2 ~750g / m 2 .

[0022] like Figure 1 The arched frame 3 shown has a height of 0.5m, a spacing of 0.8m, and a width of 2.85m.

[0023] like Figure 1 The single-section curing cover shown is 6.4m long, and the curing film covering it can be folded and closed into an arch shape along the vertical direction of the arched frame 3.

[0024] It should be noted that the curing cover should be pre-soaked in water before opening the steel formwork 6 adsorbed on the concrete side of the track bed slab to ensure that the geotextile 2 is fully moistened.

[0025] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A double-block ballastless track slab concrete ultra-early curing system, comprising several curing covers connected in combination, characterized in that, The curing cover consists of a curing structure and a support frame base structure from top to bottom. The curing part includes a plastic film and geotextile. The support frame base structure includes an arched frame and switchable magnets. The switchable magnets are located at the bottom of both sides of the arched frame. The magnets can be adjusted by a switch button. The arched frame is made of light steel keel. The upper part is a cylindrical tube with a diameter of 10mm, and the base part is flat. The plastic film and geotextile are connected together and then covered on the surface of the arched frame.

2. The ultra-early curing system for double-block ballastless track slab concrete according to claim 1, characterized in that, The thickness of the plastic film is 10 to 12 mils.

3. The ultra-early curing system for double-block ballastless track slab concrete according to claim 1, characterized in that, The geotextile has a thickness of 4-5 mm and a unit area mass of 700 g / m². 2 ~750g / m 2 .

4. The ultra-early curing system for double-block ballastless track slab concrete according to claim 1, characterized in that, The arched frame has a height of 0.5m, a spacing of 0.8m between the arched frames, and a width of 2.85m.

5. The ultra-early curing system for double-block ballastless track slab concrete according to claim 1, characterized in that, The single-section curing cover is 6.4m long, and the curing film covering it can be folded and closed into an arch shape along the vertical direction of the arched frame.

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