Expansion joint for highway bridge

Abstract

The utility model discloses an expansion joint for a highway bridge, which comprises oppositely arranged steel members, one side of each of the steel members on two sides is provided with a gap wall, and the expansion joint is characterized by further comprising a telescopic mechanism, each of the steel members on two sides is internally provided with a special-shaped groove and a paving groove, the telescopic mechanism comprises an I-shaped block and special-shaped long plates which are oppositely arranged and matched with the special-shaped grooves in the two sides correspondingly, the special-shaped long plates on the two sides are each fixedly connected with one or more hollow cylinders which are evenly arranged, and the two sides of the I-shaped block are each provided with one or more insertion rods which are evenly arranged and inserted into the corresponding hollow cylinders correspondingly. Damping rods fixedly connected with the inserting rods are arranged in the hollow cylinders, stroke grooves are formed in the two sides of the special-shaped grooves in the steel members on the two sides, and stroke plates which are oppositely arranged and matched with the stroke grooves are fixedly connected to the two sides of the I-shaped block. Compared with the prior art, the utility model has the advantages that the aesthetic degree and the use effect in long-term use can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to an expansion joint for a highway bridge. Background Art

[0002] The expansion joint of a highway bridge is a structure set up when building a highway bridge. It is mainly used to prevent factors such as temperature changes from affecting the safety of the highway bridge. Expansion joints are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge. The expansion joint can meet the requirements of bridge deck deformation. The embedded butt-jointed expansion joint uses steel components on both sides to firmly embed and fix the rubber belt or rubber strip in the middle, and uses the tensile and compressive deformation of the rubber belt or rubber strip to adapt to the expansion and contraction of the bridge beam. The steel components on both sides are respectively connected to the bridge beams on both sides. When the beams on both sides are deformed, the rubber belt can be deformed by tension and compression, and the width of the gap will change, thus achieving the function of "exposure".

[0003] The embedded butt-jointed expansion joint is a structure with a curved rubber belt between the steel components on both sides, resulting in a gap between the steel components on both sides. After long-term use, sludge, dust, and debris will accumulate in the gap, that is, they will accumulate on the rubber belt, which not only affects the appearance. After excessive accumulation, the debris will be compacted by the moving vehicles, which will affect the tensile and compressive deformation of the rubber belt between the steel components on both sides, thereby affecting the requirements for the change in the gap width when the beam connected to the steel components on both sides is deformed, making the gap change unable to meet the deformation of the beams on both sides. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that during the use of the current embedded butt-jointed expansion joint, debris will accumulate on the rubber belt between the steel components on both sides for a long time, affecting the appearance and use.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: an expansion joint for a highway bridge, comprising relatively arranged steel components, one side of the steel components on both sides is provided with a gap wall, characterized in that: it also includes a telescopic mechanism, the steel components on both sides are provided with special-shaped grooves and paving grooves, the telescopic mechanism comprises an I-shaped block and relatively arranged special-shaped long plates respectively matched with the special-shaped grooves on both sides, at least one and evenly arranged hollow cylinders are fixedly connected to the special-shaped long plates on both sides, at least one and evenly arranged plug rods are provided on both sides of the I-shaped block, and the hollow cylinders are provided with damping rods fixedly connected to the plug rods, the steel components on both sides are provided with travel grooves on both sides, and relatively arranged travel plates matching the travel grooves are fixedly connected to the two sides of the I-shaped block, the travel plates are plugged in the travel grooves, and the paving grooves are provided with elastic paving pads.

[0008] As an improvement, the lower end of the elastic paving pad fits against the upper end of the I-shaped block.

[0009] As an improvement, guide steel plates are inserted into the guide grooves on both sides, and polymer elastic strips that fit against the guide steel plates are provided in the guide grooves on both sides. The guide steel plates cooperate with the guide grooves to improve the guiding effect, and the polymer elastic strips can improve the ability to withstand the telescopic deformation of the bridge.

[0010] As an improvement, a waterproof material that cooperates with the elastic paving pad is provided in the paving groove, which can improve the waterproof property and prevent water from flowing into the gap walls.

[0011] As an improvement, the surface of the travel plate fits against the inner wall of the travel groove.

[0012] (III) Beneficial Effects

[0013] The advantages of the present utility model compared with the prior art are as follows: When the distances between the gap walls on both sides change due to the deformation of the beam bodies on both sides of the steel members on both sides, the elastic paving pad will deform to cope with the distance change, which can prevent sundries from entering and accumulating between the gap walls on both sides, improve the aesthetics, and with the cooperation of the I-shaped block, special-shaped long plate, special-shaped groove, damping rod, hollow cylinder, insertion rod, travel groove and travel plate, the telescopic mechanism has a better use effect compared with the rubber belt in resisting the deformation of the beam bodies on both sides, stronger ability to resist the change in the distance between the gap walls on both sides, and the metal parts are used in combination, which is more durable than the rubber belt. Description of the Drawings

[0014] Figure 1 is a three-dimensional view of an expansion joint for a highway bridge of the present utility model without the telescopic mechanism Figure 1 .

[0015] Figure 2 is a three-dimensional view of an expansion joint for a highway bridge of the present utility model without the telescopic mechanism Figure 2 .

[0016] Figure 3 is a three-dimensional view of an expansion joint for a highway bridge of the present utility model Figure 1 .

[0017] Figure 4 is a three-dimensional view of an expansion joint for a highway bridge of the present utility model Figure 2 .

[0018] Figure 5 is an enlarged view of part A of an expansion joint for a highway bridge of the present utility model.

[0019] As shown in the figure: 1. Steel member; 2. Paving groove; 3. Special-shaped groove; 4. Stroke groove; 5. Gap wall; 6. Elastic paving pad; 7. High molecular elastic strip; 8. Guide steel plate; 9. Special-shaped long plate; 10. I-shaped block; 11. Stroke plate; 12. Guide groove; 13. Hollow cylinder; 14. Insert rod. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1

[0022] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, an expansion joint for a highway bridge includes relatively arranged steel members 1, and gap walls 5 are provided on one side of each of the two steel members 1. It is characterized in that: an expansion mechanism is further included. Special-shaped grooves 3 and paving grooves 2 are provided in each of the two steel members 1. The expansion mechanism includes an I-shaped block 10 and relatively arranged special-shaped long plates 9 respectively cooperating with the special-shaped grooves 3 on both sides. Not less than one and evenly arranged hollow cylinders 13 are fixedly connected to each of the two special-shaped long plates 9. Insert rods 14 respectively inserted into the hollow cylinders 13 are provided on both sides of the I-shaped block 10, and damping rods fixedly connected to the insert rods 14 are provided in each of the hollow cylinders 13.

[0023] Through the above structure, with the cooperation of the special-shaped long plate 9, the special-shaped groove 3, the hollow cylinder 13, the insert rod 14 and the damping rod, the I-shaped block 10 located between the two gap walls 5 can cope with the change in the distance between the two gap walls 5 caused by the deformation of the two side beams. How to improve the stability and aesthetics of the I-shaped block 10, the specific structure is as follows:

[0024] As Figure 1 , Figure 3 , Figure 4 and Figure 5As shown in the figure, on both sides of the steel members 1, travel grooves 4 are provided on both sides of the special-shaped groove 3. On both sides of the I-shaped block 10, travel plates 11 arranged oppositely and cooperating with the travel grooves 4 are fixedly connected. The travel plates 11 are inserted into the travel grooves 4, the surface of the travel plates 11 is in contact with the inner wall of the travel grooves 4. An elastic paving pad 6 is provided in the paving groove 2, and the lower end of the elastic paving pad 6 is in contact with the upper end of the I-shaped block 10. A waterproof material cooperating with the elastic paving pad 6 is provided in the paving groove 2, which can improve the waterproof property and prevent water from flowing into the gap wall 5.

[0025] With the above structure, the stability of the I-shaped block 10 can be improved by the cooperation of the travel groove 4 and the travel plate 11. The elastic paving pad 6 can deform with the change of the distance between the two steel members 1 on both sides, and foreign objects can be prevented from entering between the two gap walls 5.

[0026] Embodiment 2

[0027] As Figure 4 and Figure 5 , guide steel plates 8 are inserted into the guide grooves 12 on both sides, and high molecular elastic strips 7 in contact with the guide steel plates 8 are provided in the guide grooves 12 on both sides.

[0028] With the above structure, the guiding effect can be improved by the cooperation of the guide steel plate 8 and the guide groove 12, and the ability to withstand the telescopic deformation of the bridge can be improved by the high molecular elastic strip 7.

[0029] When the present utility model is specifically implemented, the two steel members are connected to the two beam bodies, and then the telescopic mechanism is inserted between the two gap walls. At the same time, the special-shaped long plate is aligned with the special-shaped groove and inserted, and the travel plate is aligned with the travel groove and inserted. After the insertion is completed, the waterproof material is applied in the paving groove, and the elastic paving pad is laid in the paving groove. Then, the high molecular elastic strips are stuffed into the two guide grooves on both sides, and the guide steel plates are inserted into the two guide grooves on both sides. The two sides of the guide steel plate are respectively in contact with the two high molecular elastic strips on both sides;

[0030] During the use process, when the distance between the two gap walls becomes smaller due to the deformation of the two beam bodies on both sides, the elastic paving pad will be compressed, the insertion rod will move into the hollow cylinder, and the damping rod can buffer the movement of the insertion rod. At the same time, the travel plate will move in the travel groove, and the high molecular elastic strip will also be extruded by the guide steel plate. When the distance between the two gap walls becomes larger, both the elastic paving pad and the high molecular elastic strip will expand. In this way, the two sides of the elastic paving pad always fit the inner wall of the paving groove, which can prevent foreign objects from entering between the two gap walls, improve the aesthetics, and prevent the accumulation of foreign objects, dust, etc. between the two gap walls from affecting the long-term use. Moreover, the telescopic mechanism is composed of metal components, which is more durable than the rubber belt during long-term use and has a better anti-deformation effect on the beam body.

[0031] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0033] The above description of the present utility model and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. An expansion joint for a highway bridge, comprising steel members (1) arranged opposite to each other, wherein one side of the steel members (1) on both sides is provided with a gap wall (5), characterized in that: It also includes a telescopic mechanism, wherein the steel components (1) on both sides are provided with special-shaped grooves (3) and paving grooves (2), the telescopic mechanism includes an I-shaped block (10) and relatively arranged special-shaped long plates (9) respectively matched with the special-shaped grooves (3) on both sides, the special-shaped long plates (9) on both sides are fixedly connected with at least one and evenly arranged hollow cylinders (13), both sides of the I-shaped block (10) are provided with at least one and evenly arranged insertion rods (14) respectively inserted into the hollow cylinders (13), and the hollow cylinders (13) are provided with damping rods fixedly connected to the insertion rods (14); The steel components (1) on both sides are provided with travel grooves (4) on both sides of the special-shaped grooves (3), and the I-shaped blocks (10) are fixedly connected with travel plates (11) arranged opposite to each other and matched with the travel grooves (4) on both sides, and the travel plates (11) are inserted into the travel grooves (4), and the paving grooves (2) are provided with elastic paving pads (6).

2. The expansion joint for a highway bridge according to claim 1, characterized in that: The lower end of the elastic paving pad (6) is in contact with the upper end of the I-shaped block (10).

3. The expansion joint for a highway bridge according to claim 1, characterized in that: The paving groove (2) is provided with a waterproof material matched with an elastic paving mat (6).

4. The expansion joint for a highway bridge according to claim 1, characterized in that: The surface of the travel plate (11) is in contact with the inner wall of the travel groove (4).

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