Expansion joint structure for a bridge

Abstract

The utility model discloses a kind of expansion joint structures for bridge, it is related to expansion joint technical field, to solve the problem of the safety hazard of the existing part bridge expansion joint structure. Its technical scheme main point is: including symmetrically arranged and being used to be connected with bridge body mounting base, mounting base is equipped with comb plate, comb plate is equipped with the length direction array distribution of several limit rods, the top surface of limit rod is below or flush with the top surface of comb plate, limit rod is used to limit comb plate and mounting base each other moves, the outside of limit rod is fixedly connected with the connecting piece fixedly connected with comb plate, the top surface of limit rod is higher than connecting piece, the connecting strength between connecting piece and comb plate is greater than the connecting strength between it and limit rod.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, and more specifically, to an expansion joint structure for bridges. Background Technology

[0002] Bridge expansion joints: These are expansion joints that are typically installed between the ends of two beams, between the beam end and the abutment, or at the hinged joints of the bridge to accommodate bridge deck deformation.

[0003] Expansion joint structures are commonly found in various locations in existing technologies. Depending on the usage environment and scenario, the functions and requirements of these structures vary. Typically, bridge expansion joints are required to be able to expand and contract freely in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and allow vehicles to pass smoothly without bumps or noise. To facilitate replacement and ensure stability, some existing expansion joint structures often use multiple bolts to secure them to the bridge. However, this method can lead to bolt protrusions damaging vehicle tires in the event of subsequent damage, posing a significant safety hazard. Therefore, a new structure is needed to address the safety hazards of existing bridge expansion joint structures.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an expansion joint structure for bridges.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an expansion joint structure for bridges, comprising symmetrically arranged mounting bases for connection with the bridge body, each mounting base being provided with a comb-shaped plate, and each comb-shaped plate being provided with a plurality of limiting rods arranged in an array along its length direction, the top surface of the limiting rods being lower than or flush with the top surface of the comb-shaped plate, the limiting rods being used to restrict the relative movement of the comb-shaped plate and the mounting base, the outer side of the limiting rods being fixedly connected to a connecting member fixedly connected to the comb-shaped plate, the top surface of the limiting rods being higher than the connecting member, and the connection strength between the connecting member and the comb-shaped plate being greater than the connection strength between the connecting member and the limiting rod.

[0007] The present invention is further configured such that: the connecting member is ring-shaped, the connecting member is connected to the limiting rod and the comb plate by welding, the weld between the connecting member and the comb plate is closed-loop, and the weld between the connecting member and the limiting rod consists of several weld points distributed circumferentially.

[0008] The present invention is further configured such that: the comb plate and the mounting base are provided with a plurality of through holes that can be kept collinear, the limiting rod passes vertically into the through holes, and the top surface of the comb plate is provided with a plurality of countersunk holes that are collinear with the through holes and for inserting connecting parts.

[0009] The present invention is further configured such that: an L-shaped rod is fixedly connected to the top surface of the mounting base, a limiting cavity is provided between the L-shaped rod and the mounting base, the top surface of the comb plate is flush with the top surface of the L-shaped rod, and a limiting plate is fixedly connected to the comb plate, extending horizontally into the limiting cavity, and the limiting plate and the limiting cavity are mutually fitted.

[0010] The present invention is further configured such that the top surface of the limiting rod is provided with rounded corners.

[0011] The present invention is further configured such that: the bottom of the mounting base is provided with a clearance groove that communicates with the through hole on the mounting base.

[0012] The present invention is further configured such that: two rows of symmetrically arranged connecting U-shaped ribs are fixedly connected to the bottom of the mounting base, and several of the connecting U-shaped ribs in the same row are arrayed along the length direction of the mounting base.

[0013] In summary, this utility model has the following beneficial effects: The weld between the connector and the comb plate is closed-loop, and the weld between the connector and the limiting rod consists of several weld points distributed circumferentially. This design makes the connection strength between the connector and the comb plate greater than the connection strength between the connector and the limiting rod. This makes it easier for the limiting rod to detach from the connector when it is subjected to a force that breaks the connection between it and the connector. Consequently, when the structure as a whole is subjected to a destructive force, the limiting rod can be better maintained at a position below the top surface of the comb plate. This reduces the damage to passing vehicles caused by the protrusion of the limiting rod, making the overall structure safer to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Mounting base; 2. Comb plate; 3. Limiting rod; 4. Connector; 5. Through hole; 6. Countersunk hole; 7. L-shaped rod; 8. Limiting cavity; 9. Limiting plate; 10. Relief groove; 11. Connecting U-shaped rib. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] An expansion joint structure for bridges, such as Figures 1-3 As shown, the structure includes symmetrically arranged mounting bases 1 for connecting to the bridge structure. The connection between the mounting bases 1 and the bridge structure ensures stable installation of the overall structure, thereby guaranteeing greater stability in the overall position and functionality of the structure. Each mounting base 1 is equipped with a comb-shaped plate 2, and each comb-shaped plate 2 has several limiting rods 3 arranged in an array along its length. The top surface of the limiting rods 3 is lower than or flush with the top surface of the comb-shaped plate 2. The limiting rods 3 restrict the relative movement of the comb-shaped plate 2 and the mounting base 1. A connecting piece 4, which is fixedly connected to the comb-shaped plate 2, is fixedly connected to the outer side of the limiting rods 3. The limiting rods 3, connecting pieces 4, mounting bases 1, and comb-shaped plates 2 are all made of steel. The top surface of the limiting rods 3 is higher than the connecting pieces 4. The connection between the connecting pieces 4 and the comb-shaped plate 2... The strength of the connection between the connector 4 and the limiting rod 3 is greater than the connection strength between the connector 4 and the limiting rod 3. The connector 4 is ring-shaped, and the connection between the connector 4 and the limiting rod 3 and the comb plate 2 is welded. The weld between the connector 4 and the comb plate 2 is closed-loop, and the weld between the connector 4 and the limiting rod 3 consists of several weld points distributed circumferentially. This design makes the connection strength between the connector 4 and the comb plate 2 greater than the connection strength between the connector 4 and the limiting rod 3. When the limiting rod 3 is subjected to a force that breaks the connection between it and the connector 4, the limiting rod 3 is more likely to fall off the connector 4. As a result, when the structure as a whole is subjected to a force that breaks the connection, the limiting rod 3 can be better maintained at a position lower than the top surface of the comb plate 2. This reduces the damage caused by the protrusion of the limiting rod 3 to passing vehicles, making the overall structure safer to use.

[0018] like Figure 2 and Figure 3 As shown, the comb plate 2 and the mounting base 1 are provided with several through holes 5 to keep them collinear. The limiting rod 3 passes vertically into the through holes 5. Under the combined action of the limiting rod 3 and the through holes 5 on the comb plate 2 and the mounting base 1, the position of the comb plate 2 and the mounting base 1 is stably limited. The top surface of the comb plate 2 is provided with several countersunk holes 6 that are collinear with the through holes 5 and are used for the insertion of the connector 4. The countersunk holes 6 are used to provide stable clearance for the welding process of the connector 4, the limiting rod 3 and the comb plate 2, making the installation process of the connector 4, the limiting rod 3 and the comb plate 2 more convenient.

[0019] like Figure 2 and Figure 3As shown, an L-shaped rod 7 is fixedly connected to the top surface of the mounting base 1 by welding. The L-shaped rod 7 is made of steel. A limiting cavity 8 is formed between the L-shaped rod 7 and the mounting base 1. The top surface of the comb plate 2 is flush with the top surface of the L-shaped rod 7. A limiting plate 9 is integrally formed on the comb plate 2, which extends horizontally into the limiting cavity 8. The limiting plate 9 and the limiting cavity 8 are interlocked. Under the combined action of the limiting plate 9, the limiting cavity 8 and the L-shaped rod 7, the mounting base 1 can stably limit the position of the comb plate 2, ensuring that the position of the comb plate 2 and its functions are more stable.

[0020] like Figure 2 and Figure 3 As shown, the top surface of the limiting rod 3 is provided with rounded corners, and the bottom of the mounting base 1 is provided with a clearance groove 10 that communicates with the through hole 5 on the mounting base 1. The rounded corners make the top of the limiting rod 3 more rounded, and the clearance groove 10 provides stable clearance for the limiting rod 3 to slide downwards when it falls off, so that the limiting rod 3 will fall down stably. In the event of damage to the overall structure, the protrusion of the limiting rod 3 will reduce the damage to passing wheels, making the overall structure safer to use.

[0021] like Figure 2 and Figure 3 As shown, the bottom of the mounting base 1 is fixedly connected by two symmetrically arranged rows of connecting U-shaped ribs 11 by welding. The U-shaped ribs 11 are formed by bending steel bars. Several connecting U-shaped ribs 11 in the same row are arrayed along the length direction of the mounting base 1. This arrangement ensures that the distribution of connecting U-shaped ribs 11 at the bottom of the mounting base 1 is more uniform. When the mounting base 1 is installed with the bridge body, the distribution of connecting U-shaped ribs 11 in the bridge body makes the distribution of connection points between the mounting base 1 and the bridge body more uniform, thereby making the connection stability between the mounting base 1 and the bridge body better, and ensuring that the position of the mounting base 1 and its function are more stable.

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An expansion joint structure for bridges, characterized in that: The system includes symmetrically arranged mounting bases (1) for connection with the bridge body. Each mounting base (1) is provided with a comb plate (2). Each comb plate (2) is provided with a plurality of limiting rods (3) arranged in an array along its length. The top surface of each limiting rod (3) is lower than or flush with the top surface of the comb plate (2). The limiting rods (3) are used to restrict the comb plate (2) and the mounting base (1) from moving relative to each other. A connecting piece (4) is fixedly connected to the outer side of each limiting rod (3) and is fixedly connected to the comb plate (2). The top surface of each limiting rod (3) is higher than the connecting piece (4). The connection strength between the connecting piece (4) and the comb plate (2) is greater than the connection strength between the connecting piece (4) and the limiting rod (3).

2. The expansion joint structure for bridges according to claim 1, characterized in that: The connector (4) is ring-shaped. The connector (4) is connected to the limiting rod (3) and the comb plate (2) by welding. The weld between the connector (4) and the comb plate (2) is closed-loop. The weld between the connector (4) and the limiting rod (3) consists of several weld points distributed circumferentially.

3. The expansion joint structure for bridges according to claim 2, characterized in that: The comb plate (2) and the mounting base (1) are provided with several through holes (5) that can be kept collinear. The limiting rod (3) passes through the through hole (5) vertically. The top surface of the comb plate (2) is provided with several countersunk holes (6) that are collinear with the through hole (5) and are for the connector (4) to be inserted.

4. The expansion joint structure for bridges according to claim 3, characterized in that: An L-shaped rod (7) is fixedly connected to the top surface of the mounting base (1). A limiting cavity (8) is provided between the L-shaped rod (7) and the mounting base (1). The top surface of the comb plate (2) is flush with the top surface of the L-shaped rod (7). A limiting plate (9) is fixedly connected to the comb plate (2) and extends horizontally into the limiting cavity (8). The limiting plate (9) and the limiting cavity (8) are interlocked.

5. The expansion joint structure for bridges according to claim 2, characterized in that: The top surface of the limiting rod (3) is provided with rounded corners.

6. The expansion joint structure for bridges according to claim 3, characterized in that: The bottom of the mounting base (1) is provided with a relief groove (10) that communicates with the through hole (5) on the mounting base (1).

7. The expansion joint structure for bridges according to claim 1, characterized in that: The bottom of the mounting base (1) is fixedly connected with two symmetrically arranged columns of connecting U-shaped ribs (11), and several of the connecting U-shaped ribs (11) in the same column are arranged in an array along the length direction of the mounting base (1).

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