Highway bridge expansion joint structure

Abstract

The utility model relates to the technical field of bridge expansion joint structures, in particular to a highway bridge expansion joint structure. The connecting device comprises L-shaped steel plates and a connecting plate, the two L-shaped steel plates are connected with the connecting plate in a welded mode, a C-shaped groove is formed in one end of each L-shaped steel plate, a rubber strip is arranged on the inner wall of each C-shaped groove, a fixing plate is fixedly connected to one side of each L-shaped steel plate, and an anchor bar is fixedly connected to one side of each fixing plate. A protection assembly is arranged on one side of the anchor bar, and a fixing assembly is arranged between the rubber strip and the L-shaped steel plate, so that the problems that sealing, buffering and protection need to be conducted through the rubber strip during thermal expansion and cold contraction of a highway bridge, but the existing rubber strip is connected only in a bending and clamping mode in the installation process, so that the service life of the highway bridge is greatly prolonged are solved. The problems that the L-shaped steel plate deviates when the highway bridge is subjected to thermal expansion and cold contraction, the rubber strip is prone to loosening in the C-shaped groove, and the later use effect is possibly affected are solved.

Description

Technical Field

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

[0002] The expansion joint structure of the bridge is used to prevent cracks or damage to the structure of the highway bridge due to climate and temperature changes (thermal expansion and contraction). It is a structural joint set at an appropriate position along the construction joint direction of the highway bridge. The expansion joint structure of the bridge consists of two L-shaped steel plates, a connecting plate, a fixed plate, anchor bars, a C-shaped groove, and a rubber strip. When installing the expansion joint structure of the bridge, the rubber strip is installed in the C-shaped groove on the L-shaped steel plates on both sides, and the two L-shaped steel plates connected by the connecting plate are placed on both sides of the structural joint of the highway bridge, so that the anchor bars on the fixed plate and the embedded steel bars inside the highway bridge are welded together, and then the anti-cracking steel mesh is placed to pour concrete, and the construction cloth is laid, and water is sprinkled for maintenance.

[0003] The inventors found in their daily work that when a bridge expansion joint structure is in use, it is necessary to use rubber strips for sealing, cushioning and protection due to the thermal expansion and contraction of the highway bridge. However, the existing rubber strips are only connected by bending and snapping during installation, which causes the L-shaped steel plate to shift when the highway bridge expands and contracts, and it is easy for the rubber strip to loosen in the C-shaped groove, which may affect the subsequent use effect. Utility Model Content

[0004] The utility model aims to solve the problem that, in actual use, due to thermal expansion and contraction of highway bridges, rubber strips are needed for sealing, buffering and protection, but the existing rubber strips are connected only by bending and snapping during installation, which causes the L-shaped steel plate to shift when the highway bridges expand and contract, and easily causes the rubber strips to loosen in the C-shaped groove, which may affect the later use effect. A highway bridge expansion joint structure is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a highway bridge expansion joint structure, comprising an L-shaped steel plate and a connecting plate, two of the L-shaped steel plates and the connecting plate are welded and connected, one end of the L-shaped steel plate is provided with a C-shaped groove, the inner wall of the C-shaped groove is provided with a rubber strip, one side of the L-shaped steel plate is fixedly connected with a fixing plate, one side of the fixing plate is fixedly connected with an anchor bar, one side of the anchor bar is provided with a protective component, a fixing component is provided between the rubber strip and the L-shaped steel plate, the fixing component comprises a plurality of evenly distributed circular grooves opened on one side of the inner wall of the C-shaped groove, the inner wall of the circular groove is slidably connected with a circular rod, the arc surface of the circular rod is provided with a clamping hole, and positioning rods are slidably connected on both sides of the inner wall of the clamping hole.

[0006] The effect achieved by the above components is: by setting up a fixing assembly, when fixing the rubber strip, the circular rod in the circular groove penetrates the rubber strip, and the positioning rods on both sides of the clamping hole press against the rubber strip, thereby limiting the rubber strip, thereby preventing the rubber strip from loosening in the C-shaped groove due to the offset of the L-shaped steel plate.

[0007] Preferably, a spring 1 is fixedly connected between the two positioning rods, and the spring 1 is located in the clamping hole.

[0008] The effect achieved by the above components is: by setting the spring 1, the positioning rods on both sides are squeezed.

[0009] Preferably, a pull rope is fixedly connected between the two positioning rods, the pull rope passes through the round rod and the L-shaped steel plate, and a rubber sleeve is fixedly connected to the surface of the pull rope.

[0010] The effects achieved by the above components are: by setting a pull rope, pulling the pull rope makes the positioning rods on both sides move, thereby making the positioning rods move, and by setting a rubber sleeve, the pull rope is prevented from rubbing against the L-shaped steel plate when being pulled.

[0011] Preferably, the left end of the circular rod is fixedly connected to a second spring, and the other end of the second spring is fixed to an L-shaped steel plate.

[0012] The effect achieved by the above components is: the positioning rod is reset by setting the second spring.

[0013] Preferably, the protection assembly comprises arc-shaped covers arranged on both sides of the anchor bar, a left end of the arc-shaped cover on one side is fixedly connected with an arc-shaped block, and a right end of the arc-shaped cover on the other side is provided with an arc-shaped groove.

[0014] The effect achieved by the above components is: when it is necessary to protect the anchor bars and the welded parts of the embedded bars from being corroded by rainwater, the arc covers on both sides are dragged so that the arc blocks are inserted into the arc grooves, and the protrusions on the inner walls of the arc grooves are used to limit the position. At the same time, a sealing ring is provided on the inner wall of the arc cover to prevent water from flowing through the gaps to the anchor bars and the welded parts of the embedded bars.

[0015] Preferably, the arc-shaped groove and the arc-shaped block are matched, and a circular hole is opened on the inner wall of the arc-shaped groove.

[0016] The effect achieved by the above components is: the arc cover is fixed through the arc groove and the arc block.

[0017] Preferably, mounting grooves are provided on both sides of the arc-shaped block, and inner walls of the mounting grooves are slidably connected to limit rods.

[0018] The effect achieved by the above components is: the limiting rod in the installation groove is inserted into the installation groove, thereby further fixing the arc covers on both sides.

[0019] Preferably, the lower end of the limiting rod is fixedly connected to a spring three, and the other end of the spring three is fixed to the arc block.

[0020] The effect achieved by the above components is: by setting the spring three, the limit rod is reset.

[0021] In summary, the beneficial effects of the utility model are:

[0022] In the utility model, by arranging a fixing component, when fixing the rubber strip, the circular rod in the circular groove penetrates the rubber strip, and the positioning rods on both sides of the clamping hole press against the rubber strip, thereby limiting the rubber strip, so as to avoid the rubber strip from loosening in the C-shaped groove due to the displacement of the L-shaped steel plate, and solves the problem that the rubber strip needs to be sealed, buffered and protected when the highway bridge expands and contracts due to heat, but the existing rubber strip is connected only by bending and clamping in the installation, so that the L-shaped steel plate is displaced when the highway bridge expands and contracts due to heat, and the rubber strip is easily loosened in the C-shaped groove, which may affect the use effect in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the cross section of the fixing assembly of the utility model;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the protective component of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the cross section of the limiting rod of the utility model.

[0027] Legend: 1. L-shaped steel plate; 2. Fixing assembly; 3. Protection assembly; 4. Connecting plate; 5. Fixing plate; 6. Anchor bar; 7. C-shaped groove; 8. Rubber strip; 21. Circular groove; 22. Circular rod; 23. Clamp hole; 24. Positioning rod; 25. Spring one; 26. Pull rope; 27. Spring two; 28. Rubber sleeve; 31. Arc cover; 32. Arc block; 33. Arc groove; 34. Installation groove; 35. Limit rod; 36. Spring three. DETAILED DESCRIPTION

[0028] Reference Figure 1 and Figure 2As shown, the utility model provides a technical solution: a highway bridge expansion joint structure includes an L-shaped steel plate 1 and a connecting plate 4, the two L-shaped steel plates 1 and the connecting plate 4 are welded together, a C-shaped groove 7 is opened at one end of the L-shaped steel plate 1, a rubber strip 8 is arranged on the inner wall of the C-shaped groove 7, a fixing plate 5 is fixedly connected to one side of the L-shaped steel plate 1, an anchor bar 6 is fixedly connected to one side of the fixing plate 5, a protective component 3 is arranged on one side of the anchor bar 6, and a fixing component 2 is arranged between the rubber strip 8 and the L-shaped steel plate 1.

[0029] The specific settings and functions of the fixing component 2 and the protection component 3 are described in detail below.

[0030] Reference Figure 2 As shown, in this embodiment: the fixing component 2 includes a plurality of evenly distributed circular grooves 21 opened on one side of the inner wall of the C-shaped groove 7, the inner wall of the circular groove 21 is slidably connected with a circular rod 22, the arc surface of the circular rod 22 is provided with a clamping hole 23, and the inner wall of the clamping hole 23 is slidably connected with positioning rods 24 on both sides. By setting the fixing component 2, when fixing the rubber strip 8, the circular rod 22 in the circular groove 21 penetrates the rubber strip 8, and the positioning rods 24 on both sides of the clamping hole 23 press against the rubber strip 8, thereby limiting the rubber strip 8, so as to avoid the rubber strip 8 from loosening in the C-shaped groove 7 due to the deviation of the L-shaped steel plate 1, and a spring is fixedly connected between the two positioning rods 24. 25. Spring 1 25 is located in the clamping hole 23. By setting the spring 1 25, the positioning rods 24 on both sides are squeezed. A pull rope 26 is fixedly connected between the two positioning rods 24. The pull rope 26 passes through the circular rod 22 and the L-shaped steel plate 1. A rubber sleeve 28 is fixedly connected to the surface of the pull rope 26. By setting the pull rope 26, the pull rope 26 is pulled to move the positioning rods 24 on both sides, thereby moving the positioning rods 24. By setting the rubber sleeve 28, the friction between the pull rope 26 and the L-shaped steel plate 1 when being pulled is avoided. The left end of the circular rod 22 is fixedly connected with a spring 27. The other end of the spring 27 is fixed to the L-shaped steel plate 1. By setting the spring 27, the positioning rod 24 is reset.

[0031] Reference Figure 3 and Figure 4As shown, in this embodiment: the protection component 3 includes an arc cover 31 arranged on both sides of the anchor bar 6, the left end of the arc cover 31 on one side is fixedly connected with an arc block 32, and the right end of the arc cover 31 on the other side is provided with an arc groove 33. When it is necessary to protect the anchor bar 6 and the pre-embedded bar welding part from being corroded by rainwater, the arc covers 31 on both sides are dragged so that the arc block 32 is stuck in the arc groove 33, and the arc groove 33 is limited by the protrusion on the inner wall of the arc groove 33. At the same time, a sealing ring is provided on the inner wall of the arc cover 31 to prevent water from flowing from the gap to the anchor bar 6 and the pre-embedded bar welding part. The arc groove 33 and The arc block 32 is adapted, and a circular hole is provided on the inner wall of the arc groove 33. The arc cover 31 is fixed by the arc groove 33 and the arc block 32. Installation grooves 34 are provided on both sides of the arc block 32. The inner wall of the installation groove 34 is slidably connected with a limit rod 35. The limit rod 35 in the installation groove 34 is inserted into the installation groove 34, thereby further fixing the arc covers 31 on both sides. The lower end of the limit rod 35 is fixedly connected with a spring three 36, and the other end of the spring three 36 is fixed to the arc block 32. By setting the spring three 36, the limit rod 35 is reset.

[0032] Working principle:

[0033] When installing the expansion joint structure of the bridge, the rubber strip 8 is installed into the C-shaped groove 7 on the L-shaped steel plates 1 on both sides, and the two L-shaped steel plates 1 connected by the connecting plate 4 are placed on both sides of the structural seam of the highway bridge, so that the anchor bars 6 on the fixing plate 5 and the pre-buried steel bars inside the highway bridge are welded together, and then the anti-cracking steel mesh is placed to cast concrete, and the construction cloth is laid and watered for maintenance. When fixing the rubber strip 8, the circular rod 22 in the circular groove 21 penetrates the rubber strip 8, and the positioning rods 24 on both sides of the card hole 23 are against the rubber strip 8, so as to limit the rubber strip 8, so as to avoid the rubber strip 8 from loosening in the C-shaped groove 7 due to the deviation of the L-shaped steel plate 1, and the positioning rods 24 on both sides are squeezed by setting a spring 25, and the pull rope 26 is set to pull the pull rope 26 so that the positioning rods on both sides are The rod 24 moves, thereby causing the positioning rod 24 to move. By providing a rubber sleeve 28, the pull rope 26 is prevented from rubbing against the L-shaped steel plate 1 when being pulled. By providing a second spring 27, the positioning rod 24 is reset. When it is necessary to protect the anchor bar 6 and the pre-embedded bar welding part from being corroded by rainwater, the arc covers 31 on both sides are dragged so that the arc blocks 32 are inserted into the arc grooves 33, and the arc grooves 33 are used to limit the position. At the same time, a sealing ring is provided on the inner wall of the arc cover 31 to prevent water from flowing from the gap to the anchor bar 6 and the pre-embedded bar welding part. The arc cover 31 is fixed by the arc grooves 33 and the arc blocks 32, and the limiting rods 35 in the mounting grooves 34 are inserted into the mounting grooves 34, thereby further fixing the arc covers 31 on both sides. The limiting rods 35 are reset by providing a third spring 36.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A highway bridge expansion joint structure, comprising an L-shaped steel plate (1) and a connecting plate (4), wherein the two L-shaped steel plates (1) and the connecting plate (4) are welded together, and characterized in that: A C-shaped groove (7) is provided at one end of the L-shaped steel plate (1), a rubber strip (8) is provided on the inner wall of the C-shaped groove (7), a fixing plate (5) is fixedly connected to one side of the L-shaped steel plate (1), an anchor bar (6) is fixedly connected to one side of the fixing plate (5), a protective component (3) is provided on one side of the anchor bar (6), a fixing component (2) is provided between the rubber strip (8) and the L-shaped steel plate (1), the fixing component (2) comprises a plurality of evenly distributed circular grooves (21) provided on one side of the inner wall of the C-shaped groove (7), a circular rod (22) is slidably connected to the inner wall of the circular groove (21), a clamping hole (23) is provided on the arc surface of the circular rod (22), and positioning rods (24) are slidably connected to both sides of the inner wall of the clamping hole (23).

2. A highway bridge expansion joint structure according to claim 1, characterized in that: A spring 1 (25) is fixedly connected between the two positioning rods (24), and the spring 1 (25) is located in the clamping hole (23).

3. A highway bridge expansion joint structure according to claim 2, characterized in that: A pull rope (26) is fixedly connected between the two positioning rods (24), the pull rope (26) passes through the circular rod (22) and the L-shaped steel plate (1), and a rubber sleeve (28) is fixedly connected to the surface of the pull rope (26).

4. A highway bridge expansion joint structure according to claim 3, characterized in that: The left end of the circular rod (22) is fixedly connected to a second spring (27), and the other end of the second spring (27) is fixed to the L-shaped steel plate (1).

5. A highway bridge expansion joint structure according to claim 4, characterized in that: The protection assembly (3) comprises an arc-shaped cover (31) arranged on both sides of the anchor bar (6), the left end of the arc-shaped cover (31) on one side being fixedly connected to an arc-shaped block (32), and the right end of the arc-shaped cover (31) on the other side being provided with an arc-shaped groove (33).

6. A highway bridge expansion joint structure according to claim 5, characterized in that: The arc-shaped groove (33) is matched with the arc-shaped block (32), and a circular hole is formed on the inner wall of the arc-shaped groove (33).

7. A highway bridge expansion joint structure according to claim 6, characterized in that: Mounting grooves (34) are provided on both sides of the arc-shaped block (32), and the inner wall of the mounting groove (34) is slidably connected to a limit rod (35).

8. The highway bridge expansion joint structure according to claim 7, characterized in that: The lower end of the limiting rod (35) is fixedly connected to a spring three (36), and the other end of the spring three (36) is fixed to the arc block (32).

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