Thin double-block steel sleeper

Abstract

The utility model discloses a thin double -block type steel sleeper is located structure base, include: steel sleeper body, steel sleeper body symmetry is located structure base, and is provided with two, two steel sleeper body is connected through connecting rod, wherein, steel sleeper is hollow structure for pouring concrete. The connecting rod is steel material quality setting. Advantageous effects: steel sleeper thickness compression is below 1 / 3 of traditional concrete sleeper, solves the problem that the sleeper cannot be installed under the extreme working condition of track structure height < 350mm. The tensile / compressive performance of steel is far superior to concrete, avoids the risk of thin -walled concrete structure easy cracking, and the bearing capacity is improved by more than 40%.

Description

Technical Field

[0001] This utility model relates to the field of railway sleepers, and in particular to a thin double-block steel sleeper. Background Technology

[0002] Due to their high stability, smoothness, and low maintenance, railway sleepers are widely used in high-speed railways, suburban railways, and urban rail transit systems. Their standard structural height is approximately 560mm in rectangular tunnels and approximately 760mm in circular tunnels. They consist of rails, fasteners, sleepers, and a reinforced concrete track bed.

[0003] However, in actual construction, structural errors, foundation deformation, or uneven settlement of the civil structure often result in severely insufficient track structure height in some sections (the distance from the rail to the foundation surface is less than 350mm). Under such extreme conditions, existing technologies face the following shortcomings:

[0004] Traditional concrete sleepers are too thick to be installed in the narrow space between the rail and the structural layer, making it impossible to deploy them. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to solve the problems in the prior art and provide a thin double-block steel pillow.

[0006] Technical solution: A thin, double-block steel sleeper is proposed, installed on a structural foundation, comprising:

[0007] The steel sleeper body is symmetrically arranged on the structural foundation, and there are two of them;

[0008] The two steel sleeper bodies are connected by a connecting rod, wherein the steel sleeper is a hollow structure for pouring concrete.

[0009] Preferably, the connecting rod is made of steel.

[0010] Preferably, an outer steel sleeve communicating with the top of the steel pillow body is placed inside the steel pillow body, and a nylon sleeve is placed inside the outer steel sleeve.

[0011] Preferably, the steel pillow has pre-embedded reinforcing bars inside.

[0012] Preferably, the pre-embedded reinforcing bars include multiple horizontal bars and multiple vertical bars;

[0013] Multiple horizontal bars form a grid-like structure, and multiple horizontal bars and multiple vertical bars form a frame structure.

[0014] Preferably, the pre-embedded steel bars are embedded inside the structural foundation.

[0015] Preferably, a fixing strip is provided at the bottom edge of the steel sleeper body, and an anchoring steel bar is slidably passed through the fixing strip. The bottom end of the anchoring steel bar passes through the structural foundation and is anchored to the ground.

[0016] Preferably, the top of the anchoring rebar is welded to and passes through the steel sleeper body, and the steel sleeper body is provided with a reserved hole that matches the anchoring rebar.

[0017] Preferably, the top of the steel pillow body is provided with a steel cover plate.

[0018] Preferably, the distance from the steel sleeper body to the surface of the structural foundation is less than 350mm.

[0019] Preferably, there are two connecting rods.

[0020] Beneficial effects: The thickness of the steel sleeper is reduced to less than 1 / 3 of that of the traditional concrete sleeper, solving the problem that the steel sleeper body cannot be installed under extreme conditions where the track structure height is less than 350mm.

[0021] Steel has far superior tensile and compressive strength compared to concrete, avoiding the risk of cracking in thin-walled concrete structures and increasing load-bearing capacity by more than 40%. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one side of the structure of this utility model;

[0023] Figure 2 This is a top view of the structure of this utility model;

[0024] Figure 3 This is a top view of the internal structure of the steel pillow body of this utility model.

[0025] Figure label:

[0026] 1. Steel sleeper body; 2. Outer steel sleeve; 3. Nylon sleeve; 4. Anchoring steel bars; 5. Embedded steel bars; 6. Reserved holes; 7. Connecting rods; 8. Structural foundation; 9. Steel cover plate. Detailed Implementation

[0027] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but does not exclude other elements or objects.

[0031] In response to the problems existing in the current technology, combined with Figure 1-3 A thin, double-block steel sleeper, installed on structural foundation 8, includes:

[0032] Steel sleeper body 1, the steel sleeper body 1 is symmetrically arranged on the structural foundation 8, and there are two of them;

[0033] The two steel sleeper bodies 1 are connected by a connecting rod 7. The steel sleeper is a hollow structure used for pouring concrete.

[0034] Compared to existing technologies that cannot make steel sleepers very thin due to the fact that thin concrete sleepers are prone to cracking and damage, this application, by encasing the steel sleepers in concrete, enables the steel sleepers to be made thinner and structurally stronger, and less prone to damage.

[0035] Furthermore, the double-block steel sleepers and connecting steel rods form an integral frame, distributing the track load and eliminating stress concentration defects in directly buried fasteners; the internal horizontal and vertical bars and hollow design reduce weight by 30% while maintaining bending stiffness, preventing local buckling of the steel sleepers; bottom anchoring holes and rebar installation achieve non-destructive connection with the existing foundation, reducing the risk of damage to the original structure during construction; pre-embedded nylon sleeves ensure fastener installation accuracy, minimize track gauge and rail bottom slope control errors, exceeding standard requirements; the steel sleepers are prefabricated in the factory, requiring only anchoring welding on site, shortening the construction cycle, eliminating the need to demolish the existing track bed structure, and are suitable for rapid repair of settlement-affected areas; the steel is treated for corrosion resistance and encased in concrete, with a design life that meets the subway overhaul cycle.

[0036] In some specific embodiments, the connecting rod 7 is made of steel, making the structure more stable.

[0037] In some specific embodiments, an outer steel sleeve 2 communicating with the top of the steel sleeper body 1 is placed inside the steel sleeper body 1, and a nylon sleeve 3 is placed inside the outer steel sleeve 2.

[0038] Specifically, the nylon sleeve 3 is used to install rail fasteners, which have matching bolts; the outer steel sleeve 3 is mainly for protecting the outer steel sleeve 2, which can be directly connected to the inside of the steel sleeper body 1.

[0039] In some specific embodiments, the steel pillow body 1 is provided with pre-embedded steel bars 5 inside.

[0040] In some specific embodiments, the pre-embedded steel bar 5 includes multiple horizontal bars and multiple vertical bars;

[0041] Multiple horizontal bars form a grid-like structure, and multiple horizontal bars and multiple vertical bars form a frame structure.

[0042] In some specific embodiments, the pre-embedded steel bars 5 are embedded inside the structural foundation 8.

[0043] Specifically, the pre-embedded steel bars in the horizontal and vertical bars make the concrete structure more stable.

[0044] In some specific embodiments, a fixing strip is provided at the bottom edge of the steel sleeper body 1, and an anchoring steel bar 4 is slidably passed through the fixing strip. The bottom end of the anchoring steel bar 4 passes through the structural foundation 8 and is anchored to the ground.

[0045] Specifically, the anchoring steel bars make the steel sleeper body 1, the structural foundation 8, and the ground more stable.

[0046] In some specific embodiments, the top end of the anchoring steel bar 4 is welded to and fixed through the steel sleeper body 1, and the steel sleeper body 1 is provided with a reserved hole 6 that matches the anchoring steel bar 4.

[0047] In some specific embodiments, the top of the steel pillow body 1 is provided with a steel cover plate 9, and the surface is smooth.

[0048] In some specific embodiments, the distance from the steel sleeper body to the surface of the structural foundation 8 is less than 350mm, which is suitable for scenarios requiring thinner sleepers.

[0049] In some specific embodiments, the connecting rod 7 is set to two. This rod is used to connect the two steel sleeper bodies 1 into a whole. During track laying, the track gauge and the bottom slope are easier to control. Connecting the two sleepers together can improve the stability of the entire sleeper.

[0050] Furthermore, this utility model has the characteristics of simple manufacturing, light weight, high strength, stable structure and good durability, guaranteed rail bottom slope, and convenient construction.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A thin, double-block steel sleeper, mounted on a structural foundation (8), characterized in that, include: The steel sleeper body (1) is symmetrically arranged on the structural foundation (8), and there are two of them; The two steel sleeper bodies (1) are connected by a connecting rod (7), wherein the steel sleeper is a hollow structure and is used for pouring concrete.

2. The thin double-block steel pillow according to claim 1, characterized in that, The connecting rod (7) is made of steel.

3. A thin double-block steel pillow according to claim 1, characterized in that, The steel pillow body (1) contains an outer steel sleeve (2) that communicates with the top of the steel pillow body (1), and a nylon sleeve (3) is placed inside the outer steel sleeve (2).

4. A thin double-block steel pillow according to claim 1, characterized in that, The steel sleeper body (1) is provided with pre-embedded steel bars (5).

5. A thin double-block steel pillow according to claim 4, characterized in that, The pre-embedded steel bars (5) include multiple horizontal bars and multiple vertical bars; Multiple horizontal bars form a grid-like structure, and multiple horizontal bars and multiple vertical bars form a frame structure.

6. A thin double-block steel pillow according to claim 4 or 5, characterized in that, The pre-embedded steel bars (5) are embedded inside the structural foundation (8).

7. A thin double-block steel pillow according to claim 1, characterized in that, The bottom edge of the steel sleeper body (1) is provided with a fixing strip, and an anchoring steel bar (4) is slidably passed through the fixing strip. The bottom end of the anchoring steel bar (4) passes through the structural foundation (8) and is anchored to the ground.

8. A thin double-block steel pillow according to claim 7, characterized in that, The top end of the anchoring steel bar (4) is welded to the steel sleeper body (1) and fixed through it. The steel sleeper body (1) is provided with a reserved hole (6) that matches the anchoring steel bar (4).

9. A thin double-block steel pillow according to claim 1, characterized in that, The top of the steel pillow body (1) is provided with a steel cover plate (9).

10. A thin double-block steel pillow according to claim 1, characterized in that, The distance between the steel sleeper body (1) and the surface of the structural foundation (8) is less than 350mm.

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