A multi-directional displacement comb plate expansion joint device

Abstract

The utility model discloses a kind of multi-directional displacement comb tooth plate expansion joint device, including the movable comb steel plate and fixed comb steel plate of comb tooth end mutual intersection, further including elastic displacement structure, including elastic displacement box, reinforcing steel plate and displacement assembly, the elastic displacement box is fixed between the other end of movable comb steel plate and first beam body, several convex reinforcing steel plates are linearly arrayed and arranged in vertical direction in elastic displacement box, between the vertical end of elastic displacement box and the horizontal end of reinforcing steel plate both sides, and between the horizontal end of adjacent reinforcing steel plate top, it is connected with several displacement assemblies. In the utility model, by integrating elastic displacement structure, comb tooth plate structure, waterproof sealing system and reinforcing connection structure, efficient and stable operation of bridge expansion joint under complex load and environment is realized, and the problems of poor transverse displacement adaptability, easy damage and weak waterproof performance of traditional comb tooth expansion joint are solved.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, and in particular to a multi-directional displacement comb plate expansion joint device. Background Technology

[0002] Bridge expansion joints are installed between beam ends, between beam ends and abutments, or at bridge hinges to accommodate bridge deck deformation. They should be able to expand and contract freely in both directions, be structurally robust, provide a smooth driving experience, and prevent rainwater and debris from entering.

[0003] Currently, the better comb-type telescopic devices consist of fixed and movable comb-shaped steel plates, but traditional designs have shortcomings: first, they cannot alleviate the damage to the structure caused by the lateral displacement of the main beam under the action of wind and other forces; second, under vehicle loads, the vertical deformation of the beam ends may cause the movable comb-shaped steel plates to fail to compact the beam, thus causing damage and affecting driving safety. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-directional displacement comb plate expansion joint device in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-directional displacement comb-shaped expansion joint device includes a movable comb-shaped steel plate with intersecting comb tooth ends and a fixed comb-shaped steel plate, and further includes:

[0007] The first beam and the second beam, the movable comb-shaped steel plate is fixed on the first beam, the fixed comb-shaped steel plate is fixedly connected to the second beam, and the comb teeth of the movable comb-shaped steel plate cross the expansion joint between the two beams;

[0008] The elastic displacement structure includes an elastic displacement box, reinforcing steel plates, and displacement components. The elastic displacement box is fixed between the other end of the movable comb-shaped steel plate and the first beam. Several convex reinforcing steel plates are arranged in a linear array along the vertical direction inside the elastic displacement box. Several displacement components are connected between the horizontal ends of the two sides of the reinforcing steel plates and the vertical ends of the elastic displacement box, as well as between the top horizontal ends of adjacent reinforcing steel plates.

[0009] A waterproof structure is installed within the expansion joint between the two sets of beams.

[0010] As a further description of the above technical solution:

[0011] The displacement component includes a first displacement component, which includes an elastic column and a first spring. At least three sets of elastic columns are distributed in a ring array around the first spring.

[0012] As a further description of the above technical solution:

[0013] The displacement assembly further includes a second displacement assembly, which includes an elastic rod and a second spring. The elastic rod is fixedly connected between the vertical end of the elastic displacement box and the vertical end of the reinforcing steel plate, and the second spring is sleeved on the elastic rod.

[0014] As a further description of the above technical solution:

[0015] The waterproof structure includes angle steel and U-shaped waterstop. The angle steel is symmetrically fixed on the beams at both ends of the expansion joint, and the free ends of the waterstop on both sides are fixedly connected to the vertical ends of the angle steel.

[0016] As a further description of the above technical solution:

[0017] A paving layer is filled between the first beam and the movable comb-shaped steel plate, and between the second beam and the fixed comb-shaped steel plate. The paving layer has grooves to accommodate the elastic displacement structure. The movable comb-shaped steel plate, the fixed comb-shaped steel plate, and the paving layer are all fixedly connected by bolts.

[0018] As a further description of the above technical solution:

[0019] A stainless steel plate is laid between the fixed comb-shaped steel plate and the second beam, and the fixed comb-shaped steel plate is fixedly connected to the stainless steel plate and the paving layer by bolts.

[0020] As a further description of the above technical solution:

[0021] The groove is provided with a U-shaped support steel plate to accommodate the elastic displacement box, and the movable comb-shaped steel plate is fixedly connected to the elastic displacement structure and the support steel plate by several bolts.

[0022] As a further description of the above technical solution:

[0023] A sealing strip is embedded between the paving layer and the other end of the movable comb-shaped steel plate.

[0024] As a further description of the above technical solution:

[0025] Several semi-enclosed pre-embedded steel bars are laid between each pavement layer and the corresponding beam, as well as several continuous steel bars passing through the inside of the pre-embedded steel bars.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0027] 1. In this utility model, the reinforcing steel plate inside the elastic displacement box, as well as the first displacement component and the second displacement component, work together. Through the combination of the elastic displacement box, elastic column, first spring, elastic rod and second spring, the deformation of the bridge in multiple directions such as lateral, longitudinal and vertical directions can be effectively absorbed, improving the structural adaptability, enhancing the safety and service life of the bridge, and reducing the stress concentration of the bridge structure through an effective displacement absorption mechanism.

[0028] 2. In this utility model, the sealing strip and waterproof structure ensure that even during the movement of the movable comb-shaped steel plate, water can be effectively prevented from penetrating into the interior of the bridge structure, thereby enhancing the waterproof performance of the bridge and reducing long-term maintenance costs.

[0029] 3. In this utility model, the stainless steel plate increases the flatness and wear resistance of the contact surface, making the vehicle more stable when driving on the bridge surface. This not only improves driving comfort but also reduces noise and vibration. When the first beam undergoes angular displacement, the movable comb-shaped steel plate can maintain surface contact with the fixed comb-shaped steel plate, ensuring that they fit tightly together and avoiding structural separation or failure due to displacement. Therefore, even if a large vertical displacement occurs at the end of the first beam, there will be no "tooth warping". Attached Figure Description

[0030] Figure 1 This diagram illustrates the installation of a multi-directional displacement comb plate expansion joint device according to an embodiment of the present invention.

[0031] Figure 2 A top view schematic diagram of a fixed comb-shaped steel plate and a movable comb-shaped steel plate according to an embodiment of the present utility model is shown;

[0032] Figure 3 A three-dimensional structural schematic diagram of the elastic displacement structure provided according to an embodiment of the present invention is shown;

[0033] Figure 4 A cross-sectional schematic diagram of an elastic displacement structure according to an embodiment of the present invention is shown;

[0034] Figure 5 A schematic diagram showing the distribution of the displacement component on the reinforcing steel plate according to an embodiment of the present invention is shown.

[0035] Legend:

[0036] 1. Movable comb-shaped steel plate; 2. Fixed comb-shaped steel plate; 3. Elastic displacement structure; 31. Elastic displacement box; 32. Reinforcing steel plate; 33. First displacement component; 331. Elastic column; 332. First spring; 34. Second displacement component; 341. Elastic rod; 342. Second spring; 4. Supporting steel plate; 5. First beam; 6. Second beam; 7. Sealing strip; 8. Angle steel; 9. Stainless steel plate; 10. Waterstop; 11. Embedded steel bar; 12. Continuous reinforcement bar; 13. Pavement layer. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figure 1-5 This utility model provides a technical solution: a multi-directional displacement comb plate expansion joint device, including a movable comb-shaped steel plate 1 and a fixed comb-shaped steel plate 2 with intersecting comb teeth. A paving layer 13 is filled between the first beam 5 and the movable comb-shaped steel plate 1, and between the second beam 6 and the fixed comb-shaped steel plate 2. The comb teeth of the movable comb-shaped steel plate 1 cross the expansion joint between the paving layer and the beam on both sides. The paving layer 13 has a groove to accommodate the elastic displacement structure 3. The movable comb-shaped steel plate 1, the fixed comb-shaped steel plate 2 and the paving layer 13 are all fixedly connected by bolts. A number of semi-enclosed pre-embedded steel bars 11 are laid between each paving layer 13 and the corresponding beam, as well as a number of through-steel bars 12 passing through the inner side of the pre-embedded steel bars 11. Among them, the movable comb-shaped steel plate 1 is installed on one side of the first beam 5 and is movable to adapt to the expansion and contraction of the bridge. The fixed comb-shaped steel plate 2 is installed on one side of the second beam 6 and is kept fixed. The comb teeth of the two sets of comb-shaped steel plates are arranged crosswise to form a continuous bridge deck to ensure smooth driving. The pavement layer 13 is filled between the beam and the comb teeth plate to simulate the bridge deck pavement and play a transition and support role. The pre-embedded steel bars 11 and the continuous steel bars 12 enhance the connection strength and integrity between the pavement layer 13 and the beam.

[0039] like Figure 1 and Figures 3-5As shown, the elastic displacement structure 3 includes an elastic displacement box 31, reinforcing steel plates 32, and displacement components. A U-shaped supporting steel plate 4 is arranged within the groove to accommodate the elastic displacement box 31. The movable comb-shaped steel plate 1 is fixedly connected to the elastic displacement structure 3 and the supporting steel plate 4 by several bolts. The elastic displacement box 31 is fixed between the other end of the movable comb-shaped steel plate 1 and the first beam 5. Several convex reinforcing steel plates 32 are arranged in a vertical linear array inside the elastic displacement box 31. The horizontal ends of the reinforcing steel plates 32 are positioned between the horizontal ends of the reinforcing steel plates 32 and the vertical ends of the elastic displacement box 31. Several displacement components are connected between the top horizontal ends of adjacent reinforcing steel plates 32. The displacement components include a first displacement component 33 and a second displacement component 34. The first displacement component 33 includes elastic columns 331 and a first spring 332. At least three sets of elastic columns 331 are arranged in a circular array around the first spring 332. The second displacement component 34 includes an elastic rod 341 and a second spring 342. The elastic rod 341 is fixedly connected between the vertical end of the elastic displacement box 31 and the vertical end of the reinforcing steel plate 32, and the second spring 342 is sleeved on the elastic rod 341. The elastic displacement box 31 serves as the core elastic element, absorbing the multi-directional deformation of the bridge. The reinforcing steel plates 32 are arranged vertically linearly within the elastic displacement box 31 to enhance structural rigidity. The first displacement component 33 provides lateral and vertical buffering, while the second displacement component 34 provides longitudinal buffering.

[0040] like Figure 1 As shown, the waterproof structure is installed in the expansion joint between the two sets of beams. The waterproof structure includes angle steel 8 and U-shaped waterstop 10. The angle steel 8 is symmetrically fixed on the beams at both ends of the expansion joint, serving as a fixation and support. The free ends on both sides of the waterstop 10 are fixedly connected to the vertical ends of the angle steel 8 to prevent rainwater from seeping in.

[0041] like Figure 1 As shown, a stainless steel plate 9 is laid between the fixed comb-shaped steel plate 2 and the second beam 6. The fixed comb-shaped steel plate 2, the stainless steel plate 9, and the pavement layer 13 are fixedly connected by bolts. The stainless steel plate 9 increases the flatness and wear resistance of the contact surface, making the vehicle ride on the bridge surface more stable, improving driving comfort, and reducing noise and vibration. When the first beam 5 undergoes angular displacement, the movable comb-shaped steel plate 1 can maintain surface contact with the fixed comb-shaped steel plate 2, ensuring a tight fit between them and preventing structural separation or failure due to displacement. Therefore, even when a large vertical displacement occurs at the end of the first beam 5, "tooth warping" will not occur.

[0042] like Figure 1 As shown, a sealing strip 7 is embedded between the other end of the pavement layer 13 and the movable comb-shaped steel plate 1 to ensure that the expansion device and the bridge body are protected from water erosion and corrosion, and to extend the service life of the expansion device.

[0043] Working principle: When in use, firstly, when the bridge undergoes expansion and contraction deformation, the movable comb-shaped steel plate 1 moves with the beam body, and its comb teeth slide between the fixed comb-shaped steel plates 2 to maintain the continuity of the bridge deck. At this time, the elastic displacement box 31 works in synergy with the two sets of displacement components through the internal reinforcing steel plate 32 to absorb the lateral, longitudinal and vertical displacements and play a buffering and shock absorption role.

[0044] Secondly, under the action of vehicle load, the beam end will move up and down due to deflection. At this time, the spring assembly in the elastic displacement structure 3 is compressed or stretched to keep the movable comb steel plate 1 in good contact with the beam body, preventing vehicle jumping and structural loosening.

[0045] Among them, the U-shaped waterstop 10 and the angle steel 8 form a closed waterproof structure to prevent rainwater from seeping into the expansion joint. The sealing strip 7 and the stainless steel plate 9 further prevent dust and moisture from entering the device and extend its service life.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-directional displacement comb-shaped expansion joint device, comprising a movable comb-shaped steel plate (1) with intersecting comb tooth ends and a fixed comb-shaped steel plate (2), characterized in that, Also includes: The first beam (5) and the second beam (6) are connected. The movable comb-shaped steel plate (1) is fixed on the first beam (5), and the fixed comb-shaped steel plate (2) is fixedly connected on the second beam (6). The comb teeth of the movable comb-shaped steel plate (1) cross the expansion joint between the two beams. The elastic displacement structure (3) includes an elastic displacement box (31), a reinforcing steel plate (32) and displacement components. The elastic displacement box (31) is fixed between the other end of the movable comb-shaped steel plate (1) and the first beam (5). Several convex reinforcing steel plates (32) are arranged in a linear array along the vertical direction inside the elastic displacement box (31). Several displacement components are connected between the horizontal ends of the two sides of the reinforcing steel plate (32) and the vertical ends of the elastic displacement box (31), as well as between the top horizontal ends of adjacent reinforcing steel plates (32). A waterproof structure is installed within the expansion joint between the two sets of beams.

2. The multi-directional displacement comb plate expansion joint device according to claim 1, characterized in that, The displacement component includes a first displacement component (33), which includes an elastic column (331) and a first spring (332). The first spring (332) has at least three sets of elastic columns (331) arranged in a ring array around it.

3. The multi-directional displacement comb plate expansion joint device according to claim 2, characterized in that, The displacement assembly also includes a second displacement assembly (34), which includes an elastic rod (341) and a second spring (342). The elastic rod (341) is fixedly connected between the vertical end of the elastic displacement box (31) and the vertical end of the reinforcing steel plate (32), and the second spring (342) is sleeved on the elastic rod (341).

4. The multi-directional displacement comb plate expansion joint device according to claim 3, characterized in that, The waterproof structure includes angle steel (8) and U-shaped waterstop (10). The angle steel (8) is symmetrically fixed on the beams at both ends of the expansion joint, and the free ends of the waterstop (10) on both sides are fixedly connected to the vertical ends of the angle steel (8).

5. The multi-directional displacement comb plate expansion joint device according to claim 4, characterized in that, A paving layer (13) is filled between the first beam (5) and the movable comb-shaped steel plate (1), and between the second beam (6) and the fixed comb-shaped steel plate (2). The paving layer (13) has a groove to accommodate the elastic displacement structure (3). The movable comb-shaped steel plate (1), the fixed comb-shaped steel plate (2) and the paving layer (13) are all fixedly connected by bolts.

6. The multi-directional displacement comb plate expansion joint device according to claim 5, characterized in that, A stainless steel plate (9) is laid between the fixed comb-shaped steel plate (2) and the second beam (6), and the fixed comb-shaped steel plate (2), the stainless steel plate (9) and the paving layer (13) are fixedly connected by bolts.

7. The multi-directional displacement comb plate expansion joint device according to claim 6, characterized in that, The groove is provided with a U-shaped support steel plate (4) to accommodate the elastic displacement box (31), and the movable comb-shaped steel plate (1), the elastic displacement structure (3), and the support steel plate (4) are fixedly connected by several bolts.

8. The multi-directional displacement comb plate expansion joint device according to claim 7, characterized in that, A sealing strip (7) is embedded between the other end of the paving layer (13) and the movable comb-shaped steel plate (1).

9. A multi-directional displacement comb plate expansion joint device according to claim 8, characterized in that, Several semi-enclosed pre-embedded steel bars (11) are laid between each of the pavement layers (13) and the corresponding beam, as well as several through-strut bars (12) passing through the inside of the pre-embedded steel bars (11).

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