Anti-crack concrete sleeper

Abstract

The utility model discloses an anti-crack concrete sleeper which comprises a sleeper body, blocking shoulders are arranged on the two sides of the top of the sleeper body, and rail bearing parts are formed between the positions, corresponding to the blocking shoulders, of the top of the sleeper body; the retaining shoulder reinforcing steel bar mesh corresponds to the outer contour shape of the retaining shoulder and is arranged in the retaining shoulder; the rail bearing face reinforcing steel bar net is laid on the inner side of the rail bearing portion and fixedly connected with the retaining shoulder reinforcing steel bar net, and a spacing distance is reserved between the plane where the rail bearing face reinforcing steel bar net is located and the bottom face of the rail bearing portion. And the pulling resistance of the sleeper embedded sleeve is enhanced, so that the overall stability of the track structure is enhanced, and the driving safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transportation components, and in particular relates to a crack-resistant concrete sleeper. Background Art

[0002] Ballastless track structures offer advantages such as high smoothness, strong structural durability, minimal maintenance effort, low maintenance costs, and structural stability, continuity, and a long service life. However, twin-block ballastless track, a key ballastless track structure, is currently experiencing cracks in the sleeper shoulders and insufficient pullout resistance in the embedded casing. These cracks in the sleeper shoulders and insufficient pullout resistance in the embedded casing can severely impact the normal operation of the ballastless track and shorten its service life.

[0003] Problems or deficiencies in the existing technology:

[0004] Cracks are prone to occur at the shoulder of the sleeper.

[0005] The pull-out resistance of the embedded casing of the sleeper is relatively weak.

[0006] Therefore, how to provide a crack-resistant concrete sleeper is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0007] In view of this, the utility model provides a crack-resistant concrete sleeper, which effectively solves the problems or shortcomings of traditional railway concrete sleepers.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a crack-resistant concrete sleeper, comprising:

[0009] A pillow body, wherein shoulders are provided on both sides of the top of the pillow body, and a support rail portion is formed between the top of the pillow body and the corresponding shoulders;

[0010] A shoulder reinforcement steel mesh, the shoulder reinforcement steel mesh being arranged inside the shoulder in accordance with the outer contour of the shoulder;

[0011] The rail-supporting surface reinforcement steel mesh is laid flat on the inner side of the rail-supporting portion, the rail-supporting surface reinforcement steel mesh is fixedly connected to the shoulder reinforcement steel mesh, and the plane where the rail-supporting surface reinforcement steel mesh is located is spaced a distance from the bottom surface of the rail-supporting portion.

[0012] The beneficial effects of the present invention are as follows: shoulder reinforcement steel mesh and rail surface reinforcement steel mesh are added inside the sleeper, which improves the shoulder anti-cracking performance and enhances the pull-out resistance of the embedded casing, thereby increasing the overall stability of the track structure compared to the traditional method of only setting a ring beam inside the sleeper.

[0013] Preferably, the shoulder reinforcement steel mesh is a bent mesh structure, and there is a distance between the plane where the reinforcement steel mesh is located and the top surface of the shoulder.

[0014] The resulting technical effect is: adding reinforcing steel mesh at the shoulder to improve the shoulder's crack resistance. The arrangement of the shoulder's reinforcing steel mesh needs to adapt to the shoulder's outer contour shape, with the aim of evenly enhancing the shoulder's crack resistance.

[0015] Preferably, the distance between the plane where the shoulder reinforcement steel mesh is located and the top surface of the shoulder is 20 mm to 45 mm.

[0016] The resulting technical effect is that the shoulder reinforcement steel mesh is buried at a depth of 20mm to 45mm below the top surface of the shoulder, thereby giving full play to the local reinforcement capacity of the shoulder reinforcement steel mesh.

[0017] Preferably, the distance between the plane where the rail-supporting surface reinforcing steel mesh is located and the top surface of the rail-supporting portion is 20 mm to 50 mm.

[0018] The resulting technical effect is: the rail-bearing surface reinforcement steel mesh is buried 20mm to 50mm below the top surface of the rail-bearing part, thereby enhancing the bearing capacity of the rail-bearing part and the pull-out resistance of the embedded sleeve of the bearing part.

[0019] Preferably, the rail-bearing surface reinforcement steel mesh is located above the inner ring beam of the sleeper.

[0020] The resulting technical effect is that the reinforcement mesh on the track surface will not affect the embedding of the original sleeper ring beam, but will improve the anti-cracking performance of the shoulder and the pull-out resistance of the embedded casing on the existing basis, thereby increasing the overall stability of the track structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main structural diagram of a crack-resistant concrete sleeper of the utility model;

[0022] Figure 2 The utility model is a schematic diagram of the planar layout of the shoulder reinforcement steel mesh and the rail surface reinforcement steel mesh of the anti-cracking concrete sleeper.

[0023] 1. Pillow body, 2. Shoulder, 3. Rail bearing part, 4. Shoulder reinforcement steel mesh, 5. Rail bearing surface reinforcement steel mesh, 6. Ring beam. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See the attached Figures 1 to 2 According to an embodiment of the present invention, a crack-resistant concrete sleeper includes:

[0026] The pillow body 1 has shoulder blocks 2 on both sides of the top of the pillow body 1, and a support rail portion 3 is formed between the top of the pillow body 1 and the corresponding shoulder blocks 2;

[0027] The shoulder reinforcement steel mesh 4 corresponds to the outer contour of the shoulder and is arranged inside the shoulder 2;

[0028] The rail-supporting surface reinforcement steel mesh 5 is laid flat on the inner side of the rail-supporting part 3 , and is fixedly connected to the shoulder reinforcement steel mesh 4 . The plane where the rail-supporting surface reinforcement steel mesh 5 is located is spaced a distance from the bottom surface of the rail-supporting part 3 .

[0029] In other embodiments, the shoulder reinforcement steel mesh 4 is a bent mesh structure, and there is a distance between the plane where the shoulder reinforcement steel mesh 4 is located and the top surface of the shoulder.

[0030] In other specific embodiments, the distance between the plane where the shoulder reinforcement steel mesh 4 is located and the top surface of the shoulder is 20 mm to 45 mm.

[0031] In some other embodiments, the distance between the plane where the rail-supporting surface reinforcing steel mesh 5 is located and the top surface of the rail-supporting portion 3 is 20 mm to 50 mm.

[0032] In other embodiments, the rail-bearing surface reinforcement steel mesh 5 is located above the inner ring beam 6 of the sleeper, which does not affect the laying of the original foundation.

[0033] Ballastless track structures offer advantages such as high smoothness, strong structural durability, minimal maintenance effort, low maintenance costs, structural stability, continuity, and a long service life. However, twin-block ballastless track, a primary ballastless track structure, has been plagued by issues such as shoulder cracks and relatively weak pullout resistance of embedded casings, seriously impacting the normal operation of the track.

[0034] In view of the above situation, this concrete sleeper product adds reinforcing steel mesh at the shoulder and rail surface, effectively solving the existing problems and deficiencies. It improves the crack resistance of the sleeper shoulder, strengthens the pull-out resistance of the sleeper embedded casing, increases the overall stability of the track structure, and ensures driving safety.

[0035] As for the devices and methods of use disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the methods.

[0036] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crack-resistant concrete sleeper, characterized in that: include: A pillow body (1), wherein shoulders (2) are provided on both sides of the top of the pillow body (1), and a support rail portion (3) is formed between the top of the pillow body (1) and the corresponding shoulders (2); A shoulder reinforcement steel mesh (4), the shoulder reinforcement steel mesh (4) corresponds to the outer contour shape of the shoulder and is arranged inside the shoulder (2); A rail surface reinforcement steel mesh (5) is laid flat on the inner side of the rail support portion (3), the rail surface reinforcement steel mesh (5) is fixedly connected to the shoulder reinforcement steel mesh (4), and the plane where the rail surface reinforcement steel mesh (5) is located is spaced apart from the bottom surface of the rail support portion (3).

2. The anti-cracking concrete sleeper according to claim 1, characterized in that: The shoulder reinforcement steel mesh (4) is a bent mesh structure, and there is a spacing distance between the plane where the shoulder reinforcement steel mesh (4) is located and the top surface of the shoulder.

3. The anti-cracking concrete sleeper according to claim 2, characterized in that: The spacing distance between the plane where the shoulder reinforcement steel mesh (4) is located and the shoulder top surface is 20 mm to 45 mm.

4. The anti-cracking concrete sleeper according to claim 1, characterized in that: The spacing distance between the plane where the rail-supporting surface reinforcing steel mesh (5) is located and the top surface of the rail-supporting portion (3) is 20 mm to 50 mm.

5. The anti-cracking concrete sleeper according to claim 4, characterized in that: The rail-bearing surface reinforcement steel mesh (5) is located above the inner ring beam (6) of the sleeper.

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