Novel plate-type ballast bed structure in tenon-and-mortise connection

Abstract

The utility model relates to the technical field of construction engineering construction, in particular to a novel plate type ballast bed structure in mortise and tenon connection, which comprises a modularized left side plate, a middle plate and a right side plate, and the middle plate is connected with the left side plate and the right side plate in a mortise and tenon mode. The number of the shear hinges is matched with that of the mortise and tenon joints, and the two ends of the shear hinges are connected with the outer sides of the mortise and tenon joints respectively. The assembly type plate-type ballastless track structure has the advantages that the assembly type plate-type ballastless track structure is easy to disassemble and assemble, easy to maintain and repair and convenient to maintain and replace, and the service life of the assembly type plate-type ballastless track structure is prolonged; during replacement and maintenance, the operation process is rapid and simple, skylight time is effectively utilized for construction, and driving in the next day is not affected; stable connection is formed by adopting a tenon-mortise structure, so that the prefabricated track plate structure is firmer and more reliable, and the stability of the track structure is ensured; the original structure is not affected after maintenance and replacement, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a novel slab roadbed structure with mortise and tenon joints. Background Art

[0002] As the ballast layer of the assembled slab track structure uses prefabricated track plates, it has the advantages of good stability, high durability, long service life and convenient maintenance, and has been widely used in high-speed railways and urban rail transit. At present, in the field of high-speed railways, the quality defects of the slab track structure have gradually emerged, for example, the track plate is damaged due to defects in track plate materials, improper construction, excessive train load, environmental corrosion and other factors. In view of the above defects, the track lifting and replacement technology is mostly used at this stage, which has the disadvantages of long construction period, high labor intensity and great impact on existing lines. Although the defects of the track bed plate have not yet appeared in the field of urban rail transit, there are few studies on the corresponding slab track structure maintenance and management technology. Therefore, it is urgent to study a rapid replacement technology as a forward-looking reserve technology to improve the service performance of the slab track structure. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art, provide a new slab track structure with mortise and tenon joints, adopt a quick replacement method, improve the durability of the slab track structure, ensure the stability and safety of the track structure, and extend the service life and performance of the track.

[0004] In order to achieve the above-mentioned purpose, a new type of slab track bed structure with mortise and tenon connections is designed, including a modular left side plate, a middle plate and a right side plate, wherein the middle plate and the left side plate and the right side plate are connected by mortise and tenon connections; and also including shear hinges, wherein the number of the shear hinges matches the number of mortise and tenon connections, and the two ends of the shear hinges are respectively connected to the outer sides of the mortise and tenon connection points.

[0005] Preferably, the width of the middle plate of the utility model is greater than the width of the left plate, and the width of the left plate is equal to the width of the right plate.

[0006] Preferably, the middle plate and the left plate and the right plate of the utility model are connected by three mortise and tenon structures, and the interface is a groove and a convex shape matching, and the width of the outer side of the convex is greater than the width of the inner side.

[0007] Preferably, the shear hinge of the utility model includes a connecting rod and connecting bolts located at both ends of the connecting rod, the connecting rod is located above the mortise and tenon connection point, and the connecting bolts are used to connect the outside of the mortise and tenon connection point.

[0008] Preferably, the mortise and tenon joints of the utility model are filled with polyurethane foam.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] 1. Simple disassembly and assembly, easy maintenance and repair. The mortise and tenon joint can be disassembled and assembled repeatedly, which is convenient for maintenance and replacement of the structure and prolongs the service life of the assembled slab ballastless track structure.

[0011] 2. When replacing and repairing, the operation process is fast and simple, and the skylight time can be effectively utilized for construction, and it is ensured that the construction of each skylight will not affect driving the next day.

[0012] 3. The mortise and tenon structure is used to form a stable connection, making the prefabricated track plate structure more solid and reliable, and ensuring the stability of the track structure.

[0013] 4. The goal is to restore the original structural state of the prefabricated track slab. After maintenance and replacement, there will be no impact on the original structure, and it is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , is a structural diagram of the slab track bed of the utility model;

[0015] Figure 2 , is a structural diagram of the assembled slab ballastless track of the utility model;

[0016] Figure 3 , is a schematic diagram of the mortise and tenon structure of the utility model;

[0017] Figure 4 , is a structural diagram of the shear hinge of the utility model;

[0018] Figure 5 , is a flowchart of the construction process of rapid replacement of the slab track bed of the utility model;

[0019] In the figure: 1. left side plate; 2. middle plate; 3. right side plate; 4. shear hinge; 5. rail; 6. fastener; 7. prefabricated track plate; 8. self-compacting concrete layer; 9. geotextile separation layer; 10. prefabricated base plate; 11. pipe segment. DETAILED DESCRIPTION

[0020] In order to make the purpose, principle and structure of the utility model clearer, it is further described below in conjunction with the drawings and specific embodiments.

[0021] Example 1: A new type of slab track structure with mortise and tenon joints

[0022] See also Figure 1-4 In order to realize the rapid maintenance and replacement of the prefabricated track slabs of the assembled slab ballastless track structure, the structure of the utility model is mainly composed of a left plate 1, a middle plate 2, a right plate 3 and a shear hinge 4.

[0023] The left side plate 1, the middle plate 2 and the right side plate 3 are obtained by cutting the original prefabricated track plate into three pieces. The width of the middle plate 2 is larger than that of the left side plate 1 and the right side plate 3, and the width of the left side plate 1 and the right side plate 3 are equal. The left side plate 1 and the middle plate 2, and the middle plate 2 and the right side plate 3 are connected by three mortise and tenon structures, and the interface is a 160mm×80mm groove and convex groove shape.

[0024] There are three shear hinges 4, which are respectively arranged at the mortise and tenon joints of three prefabricated track plates to connect two adjacent prefabricated track plates and are fixed to the prefabricated track plates by bolts at both ends to limit horizontal displacement and offset and ensure the stability and integrity of the track plate structure.

[0025] The specific usage method of this embodiment is as follows:

[0026] See also Figure 5 When the prefabricated track slab of the assembled slab ballastless track structure is damaged and needs to be replaced and repaired, the shear hinge 4 is first disassembled, and the left side slab 1 and the right side slab 3 are disassembled, the old slab is transported out and the new slab is transported in by a track flatbed car, and the connection between the newly placed left and right side slabs and the pre-supported track slab 7, the self-compacting concrete layer 8, the geotextile separation layer 9, the prefabricated base slab 10, the pipe segment 11 and the fastener 6 and other assembled slab ballastless track structures is restored; after the replacement construction of the left side slab 1 and the right side slab 3 is completed, the intermediate To replace the plate 2, the old plate in the middle is dismantled and transported out, and the new plate is transported in, and the connection between the newly placed middle plate 2 and other assembled slab ballastless track structures such as the self-compacting concrete layer 8 and the fasteners 6 is restored; at the same time, polyurethane foam with good expansion and plasticity is applied to the contact between the two plates connected by mortise and tenon, and the gap between the track plates is filled to improve the sealing and stability of the prefabricated track plates after replacement; finally, the shear hinge 4 is installed back to the original position to ensure that the various units of the track bed plate can bear force together and work together.

[0027] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A new type of slab track structure with mortise and tenon joints, characterized in that include Modular left side panel, middle panel and right side panel, wherein the middle panel and the left side panel and the right side panel are connected by mortise and tenon joints; It also includes shear hinges, the number of which matches the number of mortise and tenon joints. The two ends of the shear hinge are respectively connected to the outer sides of the mortise and tenon connection point.

2. A new type of slab track structure with mortise and tenon joints as claimed in claim 1, characterized in that The width of the middle plate is greater than the width of the left plate, and the width of the left plate is equal to the width of the right plate.

3. A new type of slab track structure with mortise and tenon joints as claimed in claim 1, characterized in that The middle plate and the left plate and the right plate are connected in the form of three mortise and tenon structures, and the interface is a groove and a convex shape matching, and the width of the outer side of the convex is greater than the width of the inner side.

4. A new type of slab track structure with mortise and tenon joints as claimed in claim 1, characterized in that The shear hinge comprises a connecting rod and connecting bolts located at both ends of the connecting rod, the connecting rod is located above the mortise and tenon connection point, and the connecting bolts are used to connect the outside of the mortise and tenon connection point.

5. A new type of slab track structure with mortise and tenon joints as claimed in claim 1, characterized in that The mortise and tenon joints are filled with polyurethane foam.

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