Plate type construction method for double-block ballastless track bed of high-speed railway

Abstract

The invention relates to the technical field of high-speed railway track bed slab construction, in particular to a plate type construction method of a high-speed railway double-block type ballastless track bed, which comprises the following steps of: sequentially stacking a reinforcing mesh, a sleeper and a track panel frame by utilizing hoisting operation to form a plate type structure; the plate type structure sequentially comprises a reinforcing mesh, a sleeper rail pressed at the upper end of the reinforcing mesh and a modularized track panel frame installed on the sleeper rail from bottom to top. The construction method has the beneficial effects that traditional double-block type ballastless track bed slab construction is converted into III-type plate type structure ballastless track bed slab construction through separate sleeper laying of the modularized track panel frame, the prefabricated reinforcing steel bar meshes and the sleepers, and reinforcing steel bar construction, double-block sleeper construction and track panel frame construction are integrated through the movable operation trolley; on-site operation of a double-block type ballastless track bed slab is converted into overall hoisting operation of a ballastless track of a type III plate type structure, meanwhile, a matched fine adjustment process is matched, fine adjustment operation of the plate type ballastless track bed is completed, and the double-block type ballastless track bed slab type construction method is achieved.

Description

Technical Field

[0001] This invention relates to the field of high-speed railway track slab construction technology, specifically a slab construction method for a double-block ballastless track bed for high-speed railways. Background Technology

[0002] Railway construction includes two parts: base plate construction and track slab construction. The common track slab construction process is steel bar binding, sleeper laying, track panel installation, formwork installation, and concrete pouring. Only through this continuous construction can the overall track slab construction be completed.

[0003] However, the existing construction methods have interdependent processes, resulting in strict procedures. While this ensures the accuracy of construction, the procedures are cumbersome, and a lot of time is wasted in the connection and waiting between procedures, which seriously affects the construction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a slab construction method for a double-block ballastless track bed for high-speed railways, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A slab construction method for a double-block ballastless track bed in high-speed railways, the slab construction method comprising the following steps: Step 1: Install a movable mobile work trolley along the extension direction of the completed base plate, and transport and assemble the prefabricated steel mesh, sleepers and modular rail frame during the construction of the track bed slab using the mobile work trolley. Step 2: Using hoisting operations, the steel mesh, sleepers, and rail panels are stacked sequentially to form a plate structure. The plate structure, from bottom to top, consists of steel mesh, sleepers pressed onto the upper part of the steel mesh, and modular rail panels installed on the sleepers. Step 3: Hoist the entire panel structure onto the upper part of the base plate, and use the adjustment device to achieve precise adjustment of the installation position; Step 4: After adjustment, install the pouring formwork and carry out concrete pouring and curing.

[0006] Preferably, one side of the mobile work trolley is provided with a storage platform for storing and placing steel mesh and sleepers, the other side of the mobile work trolley is provided with a work platform for assembling and stacking steel mesh, sleepers and modular rail panels, and the upper end of the mobile work trolley is provided with a special lifting tool for hoisting.

[0007] Preferably, the modular rail frame includes a main frame pressed onto the sleeper rail and four sets of support legs located on both sides of the base plate. The four sets of support legs are symmetrically distributed, and the upper end of the support leg is provided with an adjustment device for longitudinal and lateral adjustment between it and the main frame, and the lower end of the support leg is provided with a clamping device between it and the side wall of the base plate.

[0008] Preferably, a sleeper-splitting platform is provided on one side of the storage platform, and a sleeper-splitting device is provided on the upper end of the mobile work trolley, which is located directly above the sleeper-splitting platform. The sleeper-splitting device is used for automatic laying of sleepers.

[0009] Compared with the prior art, the beneficial effects of the present invention are: This invention transforms the construction of traditional double-block ballastless track slabs into the construction of Type III slab-type ballastless track slabs by using modular track panels, precast steel mesh, and separate sleeper laying. It integrates steel reinforcement construction, double-block sleeper construction, and track panel construction using a mobile work trolley, transforming the on-site operation of double-block ballastless track slabs into the overall hoisting operation of Type III slab-type ballastless track. Simultaneously, it incorporates a matching fine-tuning process to complete the fine-tuning of the slab-type ballastless track, thus realizing a method for constructing double-block ballastless track slabs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the mobile work trolley structure of the present invention; Figure 2 This is a schematic diagram of the plate structure of the present invention mounted on the base plate; Figure 3 This is a side view of the plate structure installation of the present invention; Figure 4 This is a top view of the plate structure installation of the present invention.

[0011] In the diagram: 1. Mobile work trolley; 2. Sleeper splitting device; 3. Sleeper splitting platform; 4. Storage platform; 5. Work platform; 6. Special lifting tool; 7. Main frame; 8. Outriggers; 9. Clamping device; 10. Adjustment device; 11. Sleeper rail; 12. Steel mesh. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Please see Figures 1 to 4 The present invention provides a technical solution: A slab construction method for a double-block ballastless track bed in high-speed railways, comprising the following steps: Step 1: Install the movable mobile work trolley 1 along the extension direction of the completed base plate. The mobile work trolley 1 is used to transport and assemble the prefabricated steel mesh 12, sleeper rails 11 and modular rail frame during the construction of the track bed slab. A storage platform 4 for storing and placing the steel mesh 12 and sleeper rails 11 is set on one side of the mobile work trolley 1. A work platform 5 for assembling and stacking the steel mesh 12, sleeper rails 11 and modular rail frame is set on the other side of the mobile work trolley 1. A special lifting tool 6 for hoisting is set on the upper end of the mobile work trolley 1. Step 2: Using hoisting operations, the steel mesh 12, sleeper rail 11, and rail panel are stacked sequentially to form a type III plate structure. A sleeper-splitting platform 3 is set on one side of the storage platform 4. A sleeper-splitting device 2 is set on the upper end of the mobile work trolley 1, located directly above the sleeper-splitting platform 3. The sleeper-splitting device 2 is used for automatic laying of sleeper rail 11. The plate structure consists of steel mesh 12, sleeper rail 11 pressed onto the upper end of steel mesh 12, and modular rail panel installed on sleeper rail 11 from bottom to top. The modular rail panel includes a main frame 7 pressed onto sleeper rail 11 and four sets of support legs 8 located on both sides of the base plate. The four sets of support legs 8 are symmetrically distributed, and an adjustment device 10 for longitudinal and lateral adjustment is set between the upper end of the support leg 8 and the main frame 7. A clamping device 9 is set between the lower end of the support leg 8 and the side wall of the base plate. Step 3: Hoist the entire panel structure onto the upper part of the base plate, and use the adjustment device 10 to precisely adjust the installation position; Step 4: After adjustment, install the pouring formwork and carry out concrete pouring and curing.

[0014] Working principle: During the construction of the track bed slab, the modular rail frame is first prefabricated and assembled. During continuous construction, two sets of modular rail frames are prepared, and the prefabricated steel mesh 12 and sleeper rail 11 are stored in the storage platform 4.

[0015] During construction, the steel mesh 12 is hoisted to the sleeper distribution platform 3 using a special hoisting tool 6. Then, the sleeper distribution device 2 automatically lays the sleeper rails 11 on the steel mesh 12 at intervals. The whole structure is then hoisted to the working platform 5. One set of modular rail panels is hoisted to the working platform 5 using a special hoisting tool 6 and pressed onto the sleeper rails 11 to form an upper and lower plate structure. The whole structure is then hoisted to the upper part of the base plate to be constructed. After hoisting, the clamping device 9 is used to limit and fix the modular rail panels. The adjustment device 10 is used to adjust the position of the main frame 7 relative to the sleeper rails 11 to complete the fine adjustment of the slab track bed. After the adjustment is completed, the pouring formwork is installed, and the concrete is poured and cured.

[0016] Then the mobile work platform 1 moves to the next continuous work surface. During the movement, another set of modular rail frame is retrieved to realize the reassembly and stacking of the above-mentioned plate structure, and the installation of the pouring template and the pouring and curing of concrete are carried out.

[0017] As the work area is further advanced, the concrete curing of the initial work area has been completed. Therefore, the modular rail frame corresponding to this work area can be disassembled. The disassembled modular rail frame is hoisted using a special lifting tool 6 and then reassembled and stacked with the mobile work trolley 1.

[0018] This continuous operation enables the continuous advancement of the track bed slab working surface and the slab construction.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for constructing a slab of a double-block type ballastless track bed of a high-speed railway, characterized in that: The plate construction method comprises the following steps: Step 1: a movable mobile operation trolley (1) is installed along the extension direction of the completed base plate, and the prefabricated steel mesh (12), sleeper (11) and modular track frame in the ballast bed plate construction are transported and assembled by the mobile operation trolley (1); Step 2: the steel mesh (12), sleeper (11) and track frame are stacked in sequence by hoisting operation to form a plate structure, and the plate structure is sequentially formed from bottom to top as the steel mesh (12), the sleeper (11) pressed on the upper end of the steel mesh (12) and the modular track frame installed on the sleeper (11); Step 3: the plate structure is hoisted to the upper end of the base plate, and the precise adjustment of the installation position is realized by the adjusting device (10); Step 4: after the adjustment is completed, the pouring formwork is installed, and the concrete pouring and curing are carried out.

2. A method for constructing a slab-type double-block ballastless track bed for high-speed railways according to claim 1, characterized in that: One side of the mobile operation trolley (1) is provided with a storage platform (4) for storing the steel mesh (12) and sleeper (11), the other side of the mobile operation trolley (1) is provided with an operation platform (5) for assembling and stacking the steel mesh (12), sleeper (11) and modular track frame, and the upper end of the mobile operation trolley (1) is provided with a special lifting device (6) for lifting.

3. A method of constructing a slab for a double-block ballastless track bed of a high-speed railway according to claim 2, characterized in that: The modular track frame comprises a main frame (7) pressed on the sleeper (11) and four groups of supporting legs (8) located on both sides of the base plate, the four groups of supporting legs (8) are symmetrically distributed, and the upper end of the supporting leg (8) and the main frame (7) are provided with adjusting devices (10) for longitudinal and transverse adjustment, and the lower end of the supporting leg (8) and the side wall of the base plate are provided with clamping devices (9).

4. The method according to claim 2, characterized in that: One side of the storage platform (4) is provided with a split sleeper platform (3), and the upper end of the mobile operation trolley (1) is provided with a split sleeper device (2) located directly above the split sleeper platform (3), and the split sleeper device (2) is used for automatic laying of the sleeper (11).

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