Expansion joint structure for bridge and culvert engineering

Abstract

The utility model relates to the technical field of bridge construction, in particular to an expansion joint structure for bridge and culvert engineering, which comprises an expansion joint formed between two beam bodies, a first notch is arranged between the two beam bodies, two expansion plates are horizontally mounted on the first notch, one ends of the two expansion plates are close to each other, and the other ends of the two expansion plates are close to each other. And the other end is provided with an elastic piece and is connected with the beam body through the elastic piece. An elastic plate is arranged below the two telescopic plates, and the two ends of the elastic plate are connected with the bottom faces of the two telescopic plates correspondingly. A first cover plate and a second cover plate are arranged above the two telescopic plates, the first cover plate covers the elastic piece on one side and the connecting ends of the two telescopic plates, the second cover plate covers the elastic piece on the other side, and a gap is formed between the first cover plate and the second cover plate. The elastic pieces and the elastic plates form double horizontal action, so that the sides, close to each other, of the two telescopic plates are always in contact connection, and the service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, and more specifically, particularly relates to an expansion joint structure for bridge and culvert engineering. Background Art

[0002] Bridge expansion joints refer to a structural joint usually opened between two beam ends, between beam ends and abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. The expansion joint structure configured at the structural joint is mainly used to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. The damage of the expansion joint structure will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents.

[0003] The patent with the announcement number CN110158458B discloses a bridge expansion joint structure, which can transform the thrust of the connection structure on the bridge gap wall into a horizontal force as much as possible through a wave elastic plate, which is beneficial to prolonging the life of the bridge wall surface and improving the connection stability between the bridge expansion joint structure and the bridge. It only transforms the thrust of the connection structure on the bridge gap wall into a horizontal force through a single wave deformation plate. As the service life increases, the wave deformation plate gradually ages. Once the wave deformation plate loses its function, it cannot transform the thrust of the bridge gap wall into a horizontal force, which is not conducive to the connection stability between the bridge expansion joint structure and the bridge. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] An expansion joint structure for a bridge and culvert engineering project includes an expansion joint formed between two beams, a first notch is provided between the two beams, two expansion plates are horizontally mounted on the first notch, one end of the two expansion plates is close to each other, and the other end is provided with an elastic member and connected to the beam through the elastic member. An elastic plate is provided below the two expansion plates, and the two ends of the elastic plate are respectively connected to the bottom surfaces of the two expansion plates. A first cover plate and a second cover plate are provided above the two expansion plates, the first cover plate covers the elastic member and the connecting ends of the two expansion plates on one side, and the second cover plate covers the elastic member on the other side, and a gap is provided between the first cover plate and the second cover plate.

[0006] Furthermore, it also includes an expansion joint waterstop strip arranged below the elastic plate, and both ends of the expansion joint waterstop strip are connected to the beam body.

[0007] Furthermore, it also includes a water guide bar arranged below the elastic plate, the water guide bar is a concave arc structure, and the two ends of the water guide bar are respectively connected to the bottom surfaces of the two telescopic plates.

[0008] Furthermore, the elastic member is a spring, and a plurality of the springs are arranged at equal intervals along the length direction of the telescopic plate, and two ends of the spring are fixedly connected to the telescopic plate and the beam body respectively.

[0009] Furthermore, the top surfaces of the two beam bodies are respectively provided with a left expansion joint slot and a right expansion joint slot, the left expansion joint slot and the right expansion joint slot are symmetrically arranged on both sides of the expansion joint and the interiors are respectively used for casting to form a left expansion joint concrete body and a right expansion joint concrete body, the first slot is arranged on the left expansion joint concrete body and the right expansion joint concrete body, a first connecting rod is fixed to one end of the spring away from the expansion plate, and the first connecting rod is partially embedded in the left expansion joint concrete body or the right expansion joint concrete body.

[0010] Furthermore, the telescopic plate is a steel plate, a second connecting rod is fixed to one end of the spring close to the telescopic plate, and the second connecting rod is welded to the telescopic plate.

[0011] Furthermore, the expansion joint waterstop is arranged at the lower part of the left expansion joint concrete body and the right expansion joint concrete body; the two side edges of the expansion joint waterstop are respectively fixedly installed in the left expansion joint concrete body and the right expansion joint concrete body.

[0012] Furthermore, the elastic plate has a W-shaped structure.

[0013] Furthermore, the water guide strip has a concave arc structure.

[0014] Furthermore, the top surfaces of the left expansion joint concrete body and the right expansion joint concrete body are provided with a second slot and pre-embedded connecting screws, the connecting screws are vertically arranged and the upper ends are located in the second slots, the first cover plate is connected to the right expansion joint concrete body through the connecting bolts, and the second cover plate is connected to the left expansion joint concrete body through the connecting bolts.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The expansion joint structure for bridge and culvert engineering in the utility model is provided with two expansion plates to cover the expansion joint, and the sides of the two expansion plates that are far away from each other are connected to the beam body through elastic members, and the elastic members act on the expansion plates in the horizontal direction so that the sides of the two expansion plates that are close to each other are always in contact and connected, and an elastic plate is arranged under the two expansion plates, and the two ends of the elastic plate are respectively connected to the bottom surfaces of the two expansion plates, and the elastic plate can also generate a horizontal force on the two expansion plates, so as to make the two expansion plates approach each other, thereby forming a double horizontal direction effect, and effectively extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of an expansion joint structure for bridge and culvert engineering in an embodiment of the utility model.

[0019] Figure 2 yes Figure 1 Magnified image of .

[0020] Figure 3 It is a partial structural schematic diagram of an expansion joint structure for bridge and culvert engineering in an embodiment of the utility model.

[0021] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0023] Figure 6 It is a partial structural sectional view of an expansion joint structure for bridge and culvert engineering in an embodiment of the utility model.

[0024] Figure 7 It is a structural schematic diagram of a connector in an embodiment of the utility model.

[0025] In the figure: 1. expansion joint; 2. first notch; 3. expansion plate; 4. elastic plate; 5. first cover plate; 6. second cover plate; 7. expansion joint waterstop; 8. water guide strip; 9. spring; 10. left expansion joint notch; 11. right expansion joint notch; 12. left expansion joint concrete body; 13. right expansion joint concrete body; 14. first connecting rod; 15. second connecting rod; 16. second notch; 17. connecting screw; 18. mounting hole; 19. limiting ring; 20. connecting head; 21. sealing groove; 22. sealing head. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 , Figure 2As shown, the expansion joint structure for bridge and culvert engineering in this embodiment includes an expansion joint 1 formed between two beam bodies, and the top surfaces of the two beam bodies are respectively provided with a left expansion joint slot 10 and a right expansion joint slot 11, the left expansion joint slot 10 and the right expansion joint slot 11 are symmetrically arranged on both sides of the expansion joint and the interiors are respectively used for casting to form a left expansion joint concrete body 12 and a right expansion joint concrete body 13.

[0028] In this embodiment, the top surface of the side where the left expansion joint concrete body 12 and the right expansion joint concrete body 13 are close to each other is provided with a second notch 16 and a first notch 2 from top to bottom, and the length of the second notch 16 is longer than the first notch 2. Two telescopic plates 3 are horizontally installed on the first notch 2, one end of the two telescopic plates 3 is close to each other and covers the expansion joint, and the other end is provided with an elastic member and connected to the left expansion joint concrete body 12 or the right expansion joint concrete body 13 through the elastic member. An elastic plate 4 is arranged below the two telescopic plates 3, the elastic plate 4 is located in the expansion joint, and the two ends of the elastic plate 4 are respectively connected to the bottom surfaces of the two expansion joints. A first cover plate 5 and a second cover plate 6 are arranged above the two telescopic plates 3, the first cover plate 5 and the second cover plate 6 are installed in the second notch 16, and the top surfaces of the first cover plate 5 and the second cover plate 6 are flush with the bridge deck. The first cover plate 5 covers the elastic member on one side and the connecting ends of the two telescopic plates 3 , and the second cover plate 6 covers the elastic member on the other side. A gap is provided between the first cover plate 5 and the second cover plate 6 to accommodate the expansion joint 1 .

[0029] Specifically, Figure 3 As shown, the elastic member is a spring 9, and a plurality of springs 9 are arranged at equal intervals along the length direction of the telescopic plate 3. Figure 4 and Figure 5 As shown, the two ends of the spring 9 are respectively provided with a first connecting rod 14 and a second connecting rod 15, and the two ends of the spring 9 are respectively sleeved on the first connecting rod 14 and the second connecting rod 15 and are welded to the first connecting rod 14 and the second connecting rod 15. The first connecting rod 14 is far away from the telescopic plate 3 and is partially embedded in the left expansion joint concrete body 12 or the right expansion joint concrete body 13. The telescopic plate 3 is a steel plate, and the second connecting rod 15 is close to the telescopic plate 3 and is welded to the telescopic plate 3. The spring 9 is always in a compressed state, and the side of the two telescopic plates 3 that are far away from each other is connected to the beam body through the spring 9. Through the action of the spring 9 on the horizontal direction of the telescopic plate 3, the side of the two telescopic plates 3 that are close to each other is always in contact and connected, so as to always cover the expansion joint.

[0030] In this embodiment, the telescopic plate 3 is a steel plate, and a connecting sleeve is welded on the bottom surface of the telescopic plate 3 along the length direction of the telescopic plate 3, and an opening is provided at the bottom of the connecting sleeve. The elastic plate 4 is a W-shaped structure, and the elastic plate 4 can be made of an elastic steel plate. Mounting rods are fixed at both ends of the elastic plate 4, and the elastic plate 4 is installed by inserting the mounting rods into the connecting sleeve. By providing the elastic plate 4, the elastic plate 4 can also generate a horizontal force on the two telescopic plates 3, so that the two telescopic plates 3 are close to each other, thereby forming a double horizontal action with the spring 9, effectively extending the service life.

[0031] The expansion joint structure for bridge and culvert engineering in this embodiment also includes an expansion joint waterstop 7 arranged below the elastic plate 4, and the expansion joint waterstop 7 is arranged at the lower part of the left expansion joint concrete body 12 and the right expansion joint concrete body 13. The two sides of the expansion joint waterstop 7 are respectively fixedly installed in the left expansion joint concrete body 12 and the right expansion joint concrete body 13, and cover the expansion joint. Preferably, the expansion joint waterstop 7 is installed at the junction of the left expansion joint concrete body 12 and the right expansion joint concrete body 13 and the beam body. The installation position of the expansion joint waterstop 7 is set at the junction, which is conducive to improving the tightness reliability of the connection and durability.

[0032] The expansion joint structure for bridge and culvert engineering in this embodiment also includes a water guide bar 8 arranged below the elastic plate 4, the water guide bar 8 is a concave arc structure, and the two ends of the water guide bar 8 are respectively connected to the bottom surfaces of the two expansion plates 3, and the water guide bar 8 is a concave arc structure. The installation method of the water guide bar 8 is the same as the installation method of the elastic plate 4. By setting the water guide bar 8, the water entering between the two expansion plates 3 is firstly diverted, which is conducive to extending the service life of the expansion joint water stop 7.

[0033] In this embodiment, a second slot 16 provided on the top surface of the left expansion joint concrete body 12 and the right expansion joint concrete body 13 is pre-embedded with a connecting screw 17, the connecting screw 17 is vertically provided and the upper end is exposed in the second slot 16, the first cover plate 5 is connected to the right expansion joint concrete body 13 by a connecting bolt, and the second cover plate 6 is connected to the left expansion joint concrete body 12 by a connecting bolt.

[0034] Specific, combined Figure 6 and Figure 7As shown, a number of connecting screws 17 are arranged at equal intervals along the transverse direction of the bridge deck, and the upper ends of the connecting screws 17 are lower than the bridge deck. The first cover plate 5 and the second cover plate 6 are provided with mounting holes 18 at positions corresponding to the connecting screws 17. The connecting screws 17 pass through the mounting holes 18. A limiting ring 19 is fixed at the bottom of the mounting hole 18. A connecting head 20 is threadedly sleeved on the connecting screw 17, and the top of the connecting head 20 is a hexagonal structure. A sealing groove 21 is provided at the top of the mounting hole 18. The inner diameter of the sealing groove 21 is larger than the inner diameter of the mounting hole 18. A sealing head 22 is embedded above the connecting head 20. The sealing head 22 is made of rubber material and the top surface is flush with the bridge deck. With such a configuration, the first cover plate 5 and the second cover plate 6 can be flush with the bridge deck, and vehicles can pass smoothly.

[0035] The working principle of the expansion joint structure for bridge and culvert engineering in this embodiment is:

[0036] The expansion joint is covered by arranging two telescopic plates 3, and the sides of the two telescopic plates 3 that are away from each other are connected to the beam body through elastic members. The elastic members act on the telescopic plates 3 in the horizontal direction so that the sides of the two telescopic plates 3 that are close to each other are always in contact and connected, and an elastic plate 4 is arranged under the two telescopic plates 3, and the two ends of the elastic plate 4 are respectively connected to the bottom surfaces of the two telescopic plates 3. The elastic plate 4 can also generate a horizontal force on the two telescopic plates 3, so as to make the two telescopic plates 3 approach each other, thereby forming a double horizontal action, and effectively extending the service life.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An expansion joint structure for bridge and culvert engineering, characterized in that: include: An expansion joint (1) formed between two beam bodies; A first notch (2) arranged between the two beam bodies; Two telescopic plates (3) are horizontally mounted on the first slot (2), one end of the two telescopic plates (3) being close to each other, and the other end of the two telescopic plates (3) being provided with an elastic member and connected to the beam body through the elastic member; An elastic plate (4) is arranged below the two telescopic plates (3), and two ends of the elastic plate (4) are respectively connected to the bottom surfaces of the two telescopic plates (3); A first cover plate (5) and a second cover plate (6) are arranged above the telescopic plate (3), wherein the first cover plate (5) covers the elastic member on one side and the connecting ends of the two telescopic plates (3), and the second cover plate (6) covers the elastic member on the other side, and a gap is arranged between the first cover plate (5) and the second cover plate (6).

2. The expansion joint structure for bridge and culvert engineering according to claim 1, characterized in that: It also comprises an expansion joint water stop strip (7) arranged below the elastic plate (4), and both ends of the expansion joint water stop strip (7) are connected to the beam body.

3. The expansion joint structure for bridge and culvert engineering according to claim 2, characterized in that: It also comprises a water guide bar (8) arranged below the elastic plate (4), the water guide bar (8) being in a concave arc-shaped structure, and the two ends of the water guide bar (8) are respectively connected to the bottom surfaces of the two telescopic plates (3).

4. The expansion joint structure for bridge and culvert engineering according to claim 3 is characterized in that: The elastic member is a spring (9), and a plurality of the springs (9) are arranged at equal intervals along the length direction of the telescopic plate (3), and the two ends of the spring (9) are respectively fixedly connected to the telescopic plate (3) and the beam body.

5. The expansion joint structure for bridge and culvert engineering according to claim 4, characterized in that: The top surfaces of the two beam bodies are respectively provided with a left expansion joint notch (10) and a right expansion joint notch (11); the left expansion joint notch (10) and the right expansion joint notch (11) are symmetrically arranged on both sides of the expansion joint and are used for pouring a left expansion joint concrete body (12) and a right expansion joint concrete body (13) inside; the first notch (2) is arranged on the left expansion joint concrete body (12) and the right expansion joint concrete body (13); a first connecting rod (14) is fixed to one end of the spring (9) away from the expansion plate (3); and a portion of the first connecting rod (14) is pre-buried in the left expansion joint concrete body (12) or the right expansion joint concrete body (13).

6. The expansion joint structure for bridge and culvert engineering according to claim 5, characterized in that: The telescopic plate (3) is a steel plate, and a second connecting rod (15) is fixed to one end of the spring (9) close to the telescopic plate (3), and the second connecting rod (15) is welded to the telescopic plate (3).

7. The expansion joint structure for bridge and culvert engineering according to claim 6, characterized in that: The expansion joint water stop strip (7) is arranged at the lower part of the left expansion joint concrete body (12) and the right expansion joint concrete body (13); the two side edges of the expansion joint water stop strip (7) are respectively fixedly installed in the left expansion joint concrete body (12) and the right expansion joint concrete body (13).

8. The expansion joint structure for bridge and culvert engineering according to claim 7, characterized in that: The elastic plate (4) has a W-shaped structure.

9. The expansion joint structure for bridge and culvert engineering according to claim 8, characterized in that: The top surfaces of the left expansion joint concrete body (12) and the right expansion joint concrete body (13) are provided with a second notch (16) and a connecting screw (17) is pre-buried, the connecting screw (17) is vertically arranged and the upper end is located in the second notch (16), the first cover plate (5) is connected to the right expansion joint concrete body (13) through the connecting screw (17), and the second cover plate (6) is connected to the left expansion joint concrete body (12) through the connecting screw (17).

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