Highway bridge expansion joint connecting device

Abstract

A highway bridge expansion joint connecting device belongs to the technical field of road and bridge facility building construction and comprises a connecting piece, the connecting piece is arranged in the middle of an expansion joint, the upper portion of the connecting piece is connected with concrete pavements on the two sides of the expansion joint, and rotatable balls are arranged on the inner surfaces of the upper side and the lower side of the connecting piece. A plurality of sliding assemblies are arranged between the two sets of balls and connected with the inner wall of the concrete through connecting bodies. According to the utility model, the pressure when a vehicle passes can be effectively dispersed, structural damage is reduced, and the service life is prolonged; meanwhile, the performance of the expansion joint in the aspect of preventing rainwater, garbage and soil from permeating can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge facility construction technology, and relates to an expansion joint connection device, particularly a highway bridge expansion joint connection device. Background Technology

[0002] Expansion joints are devices that buffer and protect buildings or other structures from deformation in length or volume due to factors such as temperature, humidity, and vibration. They alleviate internal stress and deformation, preventing cracks and other damage. Therefore, expansion joints are widely used in various construction projects, such as high-rise buildings, subway tunnels, and bridge construction.

[0003] Existing bridge expansion joints are typically located at points where the bridge structure shifts. The load-bearing plate above these joints must withstand the force of a passing vehicle, resulting in excessive concentration of stress points. This can easily lead to structural damage and shorten the lifespan of the expansion joints. Furthermore, existing expansion joints are ineffective at preventing rainwater and debris from seeping in, easily causing blockages and increasing maintenance difficulty and costs.

[0004] To overcome these shortcomings, a novel expansion joint for highway bridges has been proposed. This expansion joint is designed to evenly distribute the pressure of passing vehicles, reducing structural damage and extending service life. Simultaneously, its waterproof and anti-fouling properties have been optimized to ensure proper functioning under all weather conditions. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a highway bridge expansion joint connection device to solve the technical problem that the stress points of the expansion joint are concentrated, which easily causes structural damage and thus shortens the service life of the expansion joint.

[0006] To achieve the above and other related objectives, this utility model provides a highway bridge expansion joint connection device, including a connector, which is disposed in the middle of the expansion joint. The upper part of the connector is connected to the concrete pavement on both sides of the expansion joint. Rotatable balls are provided on the inner surfaces of both the upper and lower sides of the connector. Several sets of sliding components are provided between the two sets of balls. The sliding components are connected to the inner wall of the concrete through a connector.

[0007] In any of the above solutions, it is preferred that the connecting member is an "I" shaped steel.

[0008] Preferably, in any of the above embodiments, the upper flange of the "I"-shaped steel is a trapezoidal flat plate, and the lower flange of the "I"-shaped steel is a square plate.

[0009] In any of the above embodiments, the lower surface of the trapezoidal plate is connected to the concrete pavement on both sides of the expansion joint, and the square plate is located inside the expansion joint.

[0010] In any of the above embodiments, it is preferred that the opposite surfaces of the trapezoidal plate and the square plate are respectively provided with several rows of symmetrically arranged grooves, and the ball bearings are embedded in the grooves by clamps.

[0011] Preferably, in any of the above embodiments, each set of sliding components includes two sliders, and the two sliders are symmetrically arranged about the vertical centerline of the connector.

[0012] Preferably, in any of the above solutions, the slider is a square block.

[0013] Preferably, in any of the above solutions, the connecting body is a cylinder, and the cylinder integrates the slider and the concrete into one piece.

[0014] As described above, the highway bridge expansion joint connection device of this utility model has the following beneficial effects:

[0015] 1. In this utility model, the device has high structural strength, which can evenly distribute the pressure when a vehicle passes by, reduce structural damage, and thus effectively extend the service life of the device.

[0016] 2. In this utility model, the connection between the connector and the concrete pavement can effectively improve the performance of the expansion joint in preventing rainwater and garbage soil from seeping in. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of this utility model.

[0018] Figure 2 The diagram shows the connection of the connectors and balls.

[0019] Figure 3 The diagram shows the connection between the slider and the connector.

[0020] Figure 4 This is an enlarged diagram showing the ball bearings embedded in the connector.

[0021] Component designation explanation

[0022] 1-Connector; 2-Ball bearing; 3-Slider; 4-Connector body; 5-Concrete. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0024] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0025] Please see Figure 1-4 This utility model provides a highway bridge expansion joint connection device, including a connector 1. The connector 1 is disposed in the middle of the expansion joint. The upper part of the connector 1 is connected to the concrete pavement 5 on both sides of the expansion joint. Rotatable balls 2 are provided on the inner surfaces of the upper and lower sides of the connector 1. Several sets of sliding components are provided between the two sets of balls 2. The sliding components are connected to the inner wall of the concrete 5 through a connector 4.

[0026] In this embodiment, to address the technical problem that in existing technologies, bridge expansion joints are typically located at points where beam displacement occurs, and the upper load-bearing plate needs to withstand the force of a vehicle passing over it. This results in excessively concentrated stress points, easily causing structural damage and shortening the service life of the expansion joint. This embodiment proposes a highway bridge expansion joint connection device. The device includes a connector 1, rolling balls 2 disposed within the connector 1, and a sliding assembly movable on the balls 2. The sliding assembly is connected and fixed to the concrete 5 on both sides of the expansion joint via a connector 4. The sliding assembly, positioned on the balls 2 on the upper and lower surfaces of the connector 1, enables horizontal movement of the sliding assembly, ensuring that the device has expansion and contraction adaptability to thermal expansion and contraction. That is, when the concrete 5 on both sides of the expansion joint expands thermally, the concrete 5 drives the sliding assembly towards the center of the connector 1 via the connector 4; when the concrete 5 on both sides of the expansion joint contracts thermally, the concrete 5 drives the sliding assembly away from the center of the connector 1 via the connector 4. The entire device has high structural strength, which can evenly distribute the pressure when a vehicle passes by, reduce structural damage, and extend service life.

[0027] In this embodiment, in order to improve the performance of the expansion joint in preventing rainwater and soil from seeping in, the upper part of the connector 1 is connected to the concrete pavement 5 on both sides of the expansion joint to ensure the sealing of the concrete pavement 5, thereby effectively reducing the seepage of rainwater and soil, avoiding blockage of the expansion joint, ensuring the normal performance of the highway bridge, and reducing the difficulty and cost of maintenance.

[0028] As a further description of the above embodiment, the connector 1 is an "I" shaped steel.

[0029] In this embodiment, the upper flange of the "I"-shaped steel is a trapezoidal flat plate, and the lower bottom surface of the trapezoidal flat plate is connected to the concrete pavement 5 on both sides of the expansion joint. The lower flange of the "I"-shaped steel is a square plate, located inside the expansion joint. The trapezoidal flat plate, narrower at the top and wider at the bottom, forms a slope, facilitating vehicle passage. Simultaneously, the connection between the lower bottom surface of the trapezoidal flat plate and the concrete pavement 5 on both sides of the expansion joint effectively buffers the impact force of the vehicle wheels, preventing rainwater and debris from seeping in. The lower flange's location within the expansion joint evenly distributes the load from passing vehicles, transferring it evenly to the ground, thereby reducing the structural damage to the device and pavement caused by vehicle pressure and extending its service life.

[0030] In this embodiment, the "I"-shaped steel can be prefabricated one-piece steel, or it can be welded on-site depending on the situation.

[0031] As a further description of the above embodiment, the opposite surfaces of the trapezoidal plate and the square plate are respectively provided with several rows of symmetrically arranged grooves, and the ball bearings 2 are embedded in the grooves by clamps.

[0032] In this embodiment, the ball bearing 2 is embedded in the groove by the clamp and can rotate freely, thereby reducing the frictional force of the moving component moving in the connector 1, ensuring the thermal expansion and contraction performance of the road surface, and reducing frictional loss.

[0033] In this embodiment, the spacing between the balls 2 can be adjusted according to the width of the expansion joint.

[0034] As a further description of the above embodiments, each set of sliding components includes two square sliders 3, which are symmetrically arranged about the vertical center line of the connector 1.

[0035] In this embodiment, the square slider 3 is arranged inside both sides of the "I" shaped steel, with a certain horizontal space reserved to facilitate the movement of the slider 3 and ensure that the device has the expansion and contraction performance to adapt to the trend of thermal expansion and contraction.

[0036] In this embodiment, the square sliders 3 are arranged with a longitudinal spacing of 30cm, and their upper and lower bottom surfaces are in contact with the ball bearings 2. This arrangement can better transfer the upper load to the lower flange of the "I"-shaped steel, while improving the structural strength of the device. Of course, the spacing between the square sliders 3 is not limited to 30cm and can be adjusted according to the width of the road surface.

[0037] In this embodiment, the slider 3 is not limited to a square block; other shapes of slider 3 are also acceptable, such as cylinders, hexagonal prisms, etc.

[0038] As a further description of the above embodiment, the connecting body 4 is a cylinder, which casts the slider 3 and the concrete 5 into one piece.

[0039] In this embodiment, the shape of the connector 4 is not limited to a cylinder; other shapes that can provide a stable connection are also acceptable. For example, the connector 4 can be a square, a triangular prism, or the like.

[0040] In summary, this invention effectively disperses the pressure from passing vehicles, reduces structural damage, and extends service life; it also improves the performance of expansion joints in preventing rainwater and soil infiltration. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A highway bridge expansion joint connection device, characterized in that: Includes a connector (1), which is located in the middle of the expansion joint. The upper part of the connector (1) is connected to the concrete (5) pavement on both sides of the expansion joint. Rotatable balls (2) are provided on the inner surfaces of the upper and lower sides of the connector (1). Several sets of sliding components are provided between the two sets of balls (2). The sliding components are connected to the inner wall of the concrete (5) through the connector (4).

2. The highway bridge expansion joint connection device according to claim 1, characterized in that: The connector (1) is an "I" shaped steel.

3. The highway bridge expansion joint connection device according to claim 2, characterized in that: The upper flange of the "I"-shaped steel is a trapezoidal flat plate, and the lower flange of the "I"-shaped steel is a square plate.

4. The highway bridge expansion joint connection device according to claim 3, characterized in that: The bottom surface of the trapezoidal plate is connected to the concrete (5) pavement on both sides of the expansion joint, and the square plate is located inside the expansion joint.

5. The highway bridge expansion joint connection device according to claim 3, characterized in that: The trapezoidal plate and the square plate are respectively provided with several rows of symmetrically arranged grooves on their opposite sides, and the ball (2) is embedded in the groove by a clamp.

6. The highway bridge expansion joint connection device according to claim 1, characterized in that: Each set of sliding components includes two sliders (3), which are symmetrically arranged about the vertical centerline of the connector (1).

7. The highway bridge expansion joint connection device according to claim 6, characterized in that: The slider (3) is a square block.

8. The highway bridge expansion joint connection device according to claim 1, characterized in that: The connecting body (4) is a cylinder, which casts the slider (3) and concrete (5) into one piece.

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