Bridge expansion joint structure

Abstract

The utility model discloses a bridge expansion joint structure which comprises a bridge body, two top plates are fixedly connected to the upper end of the bridge body, wear-resistant layers are fixedly connected to the upper ends of the two top plates, fixing plates are fixedly connected to the lower ends of the two top plates, and the exteriors of the two fixing plates are fixedly connected to the interior of the bridge body. Waterproof plates are fixedly connected to the interiors of the two fixing plates, a plurality of second fixing sleeves are fixedly connected to the interiors of the two fixing plates, connecting rods are slidably arranged in the second fixing sleeves, and connecting plates are fixedly connected to the positions, opposite to each other, of the connecting rods; and second buffer materials are arranged in the multiple second fixing sleeves. According to the bridge expansion joint, when the bridge deforms due to the temperature factor, the multiple buffer layers in the expansion joint can absorb extrusion force, the stability of the bridge cannot be weakened due to deformation, and therefore the service life is prolonged.

Description

Technical Field

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

[0002] During bridge construction, expansion joints are often required to meet the requirements of bridge deck deformation. Traditional expansion joints are usually filled with concrete. As time goes by and the friction caused by long-term vehicle driving, they may wear and age, causing internal stability to deteriorate, seriously leading to increased displacement and deformation of the expansion joint surface, affecting vehicle driving stability and possibly causing traffic accidents. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a bridge expansion joint structure to achieve the purpose of improving the stability of the bridge and reducing the deformation problem of the expansion joint.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bridge expansion joint structure, including a bridge body, two top plates are fixedly connected to the upper end of the bridge body, the upper ends of the two top plates are fixedly connected with wear-resistant layers, the lower ends of the two top plates are fixedly connected with fixed plates, the outer sides of the fixed plates are fixedly connected to the inside of the bridge body, the two fixed plates are fixedly connected with waterproof plates, the two fixed plates are fixedly connected with a plurality of second fixed sleeves, the second fixed sleeves are slidably provided with connecting rods, the connecting rods are fixedly connected with connecting plates at relative positions of two, the second fixed sleeves are provided with second buffer materials, and the connecting rods are fixedly connected with second springs at opposite positions of two;

[0005] A plurality of sliders are slidably arranged inside the lower end of the bridge body, and connecting blocks are fixedly connected to the upper ends of the sliders. Connecting columns are rotatably arranged at relative positions of the connecting blocks, and first fixed sleeves are slidably arranged outside the connecting columns. First buffer materials are arranged inside the plurality of the first fixed sleeves, and first springs are fixedly connected to opposite positions of the connecting columns.

[0006] Furthermore, the wear-resistant layer is made of aluminum oxide, the first buffer material is made of foamed aluminum, and the second buffer material is made of polyurethane foam plastic.

[0007] Furthermore, the exterior of the first spring is slidably disposed inside the first fixing sleeve, and the exterior of the second spring is slidably disposed inside the second fixing sleeve.

[0008] Furthermore, a plurality of bolts are fixedly connected to the upper end of the top plate, and the outer surfaces of the bolts are threadedly connected to the inside of the bridge body.

[0009] Furthermore, a plurality of drainage holes are provided inside the top plate.

[0010] Furthermore, a hydrophobic plate is fixedly connected inside the fixing plate.

[0011] Furthermore, a plurality of shock absorbers are fixedly connected to the lower end of the waterproof plate.

[0012] Furthermore, a sealing strip is clamped and arranged inside the bridge body near the lower end.

[0013] According to the bridge expansion joint structure provided by the utility model, when the bridge body shrinks due to cold, the connecting rod will squeeze the second buffer material, and at the same time the connecting column will squeeze the first buffer material. Both the first buffer material and the second buffer material have energy absorption and buffering functions, thereby absorbing the internal pressure force exerted by the bridge body, protecting the bridge body structure from damage caused by environmental factors, improving stability, reducing deformation problems in expansion joints, and increasing service life.

[0014] In addition, when the bridge body expands due to heat, the slider slides inside the bridge body, the connecting column squeezes the first spring, the first spring is compressed to gain elasticity, and at the same time the connecting rod inside the second fixed sleeve squeezes the second spring, the second spring contracts, providing a buffer for the interior and protecting the stability of the expansion joint. The wear-resistant layer has high hardness and wear resistance, which reduces the wear caused by vehicle driving and protects the surface of the expansion joint and the stability of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings herein are used to provide further description of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1 It is an axonometric schematic diagram of the utility model;

[0017] Figure 2 It is a front sectional schematic diagram of the utility model;

[0018] Figure 3 It is a partial cross-sectional schematic diagram of the connecting rod of the utility model;

[0019] Figure 4 It is a partial cross-sectional schematic diagram of the connecting column of the utility model;

[0020] Figure 5 It is a partial cross-sectional schematic diagram of the opening of the connecting column of the utility model.

[0021] In the figure, 1. bridge body; 2. bolts; 3. drainage holes; 4. top plate; 5. wear-resistant layer; 6. hydrophobic plate; 7. fixing plate; 8. waterproof plate; 9. shock absorber; 10. slider; 11. first spring; 12. first buffer material; 13. first fixing sleeve; 14. sealing strip; 15. connecting column; 16. connecting block; 17. connecting plate; 18. second buffer material; 19. connecting rod; 20. second spring; 21. second fixing sleeve. DETAILED DESCRIPTION

[0022] In order to make those skilled in the art better understand the present invention, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be noted that the features in the embodiments and embodiments of the present application can be combined with each other without conflict.

[0023] A typical embodiment of the utility model provides a bridge expansion joint structure, including a bridge body 1, the upper end of the bridge body 1 is fixedly connected with two top plates 4, the top plates 4 can withstand the wear caused by vehicles, the upper ends of the two top plates 4 are fixedly connected with wear-resistant layers 5, the wear-resistant layers 5 have high hardness and wear resistance, reduce the wear caused by vehicle driving, protect the surface of the expansion joint and the stability of vehicle driving, the lower ends of the two top plates 4 are fixedly connected with fixed plates 7, which play a fixing role, the two fixed plates 7 are fixedly connected to the inside of the bridge body 1 on the outside, and the two fixed plates 7 are fixedly connected to the inside of the waterproof plate 8 to prevent the influence of water flow and water vapor on the internal structure, and the two fixed plates 7 are fixed inside. There are multiple second fixed sleeves 21 fixedly connected, and connecting rods 19 are slidably arranged inside the multiple second fixed sleeves 21. The multiple connecting rods 19 are fixedly connected with connecting plates 17 at relative positions in pairs. Second buffer materials 18 are arranged inside the multiple second fixed sleeves 21, and the multiple connecting rods 19 are fixedly connected with second springs 20 at opposite positions in pairs. When the bridge body 1 shrinks due to cold, the connecting rods 19 will squeeze the second buffer material 18, and the second buffer material 18 has good buffering performance. At the same time, the connecting column 15 squeezes the first buffer material 12, and the first buffer material 12 has an energy-absorbing and buffering effect, thereby absorbing the pressure exerted by the bridge body 1 on the inside and improving the service life.

[0024] Among them, multiple sliders 10 are slidably arranged at the lower end inside the bridge body 1, and connecting blocks 16 are fixedly connected to the upper ends of the multiple sliders 10. Connecting columns 15 are rotatably arranged at relative positions of the multiple connecting blocks 16 in pairs, and first fixed sleeves 13 are slidably arranged outside the multiple connecting columns 15. First buffer materials 12 are arranged inside the multiple first fixed sleeves 13 to provide buffering effect to the interior, and first springs 11 are fixedly connected to the multiple connecting columns 15 at opposite positions in pairs. The first spring 11 has telescopic and rebound effects. When the bridge body 1 is heated and expanded, the slider 10 slides inside the bridge body 1, and the connecting column 15 squeezes the first spring 11. The first spring 11 is compressed to obtain elasticity, and at the same time, the connecting rod 19 inside the second fixed sleeve 21 squeezes the second spring 20. The second spring 20 contracts, providing buffering to the interior, protecting the stability of the expansion joint, and reducing the occurrence of deformation.

[0025] In the above embodiment, the wear-resistant layer 5 is mainly made of aluminum oxide, which has high hardness and wear resistance, and reduces the wear caused by vehicle driving. The multiple first buffer materials 12 are mainly made of foamed aluminum, which is a lightweight, porous metal material with excellent impact energy absorption performance and strong impact absorption. The multiple second buffer materials 18 are mainly made of polyurethane foam plastic, which is a high-performance buffer material with excellent elasticity, softness, elongation and compression strength. The outsides of the multiple first springs 11 are all slidably arranged inside the first fixed sleeve 13, and the outsides of the multiple second springs 20 are all slidably arranged inside the second fixed sleeve 21. The second springs 20 can absorb and reduce vibration and impact, and provide a buffering effect together with the internal buffer material to reduce the impact caused by deformation.

[0026] In a preferred embodiment, multiple bolts 2 are fixedly connected to the upper ends of the two top plates 4, and the outer surfaces of the multiple bolts 2 are threadedly connected to the inside of the bridge body 1. The multiple bolts 2 make the connection between the top plates 4 and the bridge body 1 tighter, and the tools and operations required for the threaded connection are relatively simple, which can reduce the difficulty of construction and simplify the construction operation.

[0027] In a preferred embodiment, a plurality of drainage holes 3 are provided inside the two top plates 4. The plurality of drainage holes 3 can reduce the influence of water flow on the surface of the expansion joint, guide the water flow, and have a drainage effect, so that the surface of the expansion joint is clean and tidy.

[0028] In a preferred embodiment, a hydrophobic plate 6 is fixedly connected inside the two fixed plates 7. The hydrophobic plate 6 can guide the water flow to prevent moisture accumulation and penetration. The hydrophobic plate 6 has a strong compressive resistance, can withstand a certain load, maintain its stability and durability, and prevent water flow and water vapor from affecting the internal materials of the expansion joint.

[0029] In a preferred embodiment, a plurality of shock absorbers 9 are fixedly connected to the lower end of the waterproof plate 8. The shock absorbers 9 can absorb and reduce vibration and impact, provide a buffering effect, reduce the impact of the vehicle's movement on the expansion joint, and increase the service life.

[0030] A sealing strip 14 is provided at the lower end of the interior of the bridge body 1 , and the sealing strip 14 can increase the sealing performance, prevent the entry of water vapor, and reduce the influence of water vapor on the internal structure.

[0031] When the bridge body 1 contracts due to cold, the bridge body 1 will squeeze the inside of the expansion joint, and the multiple connecting rods 19 inside will squeeze the second buffer material 18 inside the second fixed sleeve 21. The second buffer material 18 has good buffering performance. At the same time, the connecting column 15 squeezes the first buffer material 12 inside the first fixed sleeve 13. The first buffer material 12 has an energy-absorbing and buffering effect, so that it can absorb the pressure exerted by the bridge body 1 on the inside, and protect the structure of the bridge body 1 from damage caused by environmental factors. When the bridge body 1 expands due to heat, it pulls the structure inside the expansion joint, and the slider 10 slides inside the bridge body 1, driving the first fixed sleeve 13 to move. The connecting column 15 inside the sleeve 13 squeezes the first spring 11, so that the first spring 11 is compressed to obtain elasticity, and at the same time, the connecting rod 19 inside the second fixed sleeve 21 squeezes the second spring 20, so that the second spring 20 contracts, providing a buffer for the interior and protecting the stability inside the expansion joint. The drainage holes 3 at the upper end of the top plate 4 guide the rainwater to flow into the hydrophobic plate 6 for guidance. The waterproof plate 8 can prevent the influence of water vapor on the internal structure. The multiple shock absorbers 9 at the upper end of the fixed plate 7 can absorb the vibration and impact caused by the driving of vehicles at the upper end, and can provide a buffering effect with the internal buffer material to improve the stability of the bridge and driving safety.

[0032] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge expansion joint structure, comprising a bridge body (1), characterized in that: The upper end of the bridge body (1) is fixedly connected to two top plates (4), the upper ends of the two top plates (4) are fixedly connected to a wear-resistant layer (5), the lower ends of the two top plates (4) are fixedly connected to a fixing plate (7), the outer side of the fixing plate (7) is fixedly connected to the inside of the bridge body (1), the inside of the two fixing plates (7) is fixedly connected to a waterproof plate (8), the inside of the two fixing plates (7) is fixedly connected to a plurality of second fixing sleeves (21), the inside of the second fixing sleeves (21) are slidably provided with connecting rods (19), the connecting rods (19) are fixedly connected to the connecting plates (17) at two relative positions, the inside of the second fixing sleeves (21) are provided with a second buffer material (18), and the connecting rods (19) are fixedly connected to second springs (20) at two opposite positions; A plurality of sliders (10) are slidably arranged at the lower end of the bridge body (1), the upper ends of the sliders (10) are fixedly connected to connecting blocks (16), connecting columns (15) are rotatably arranged at two relative positions of the connecting blocks (16), first fixing sleeves (13) are slidably arranged outside the connecting columns (15), a plurality of the first fixing sleeves (13) are internally provided with first buffer materials (12), and first springs (11) are fixedly connected to two opposite positions of the connecting columns (15).

2. A bridge expansion joint structure according to claim 1, characterized in that: The wear-resistant layer (5) is made of aluminum oxide, the first buffer material (12) is made of foamed aluminum, and the second buffer material (18) is made of polyurethane foam plastic.

3. A bridge expansion joint structure according to claim 1 or 2, characterized in that: The exterior of the first spring (11) is slidably disposed inside the first fixing sleeve (13), and the exterior of the second spring (20) is slidably disposed inside the second fixing sleeve (21).

4. A bridge expansion joint structure according to claim 3, characterized in that: A plurality of bolts (2) are fixedly connected to the upper end of the top plate (4), and the outer surfaces of the bolts (2) are threadedly connected to the interior of the bridge body (1).

5. A bridge expansion joint structure according to claim 1 or 4, characterized in that: A plurality of drainage holes (3) are provided inside the top plate (4).

6. A bridge expansion joint structure according to claim 5, characterized in that: The fixed plate (7) is fixedly connected to a hydrophobic plate (6) inside.

7. A bridge expansion joint structure according to claim 6, characterized in that: A plurality of shock absorbers (9) are fixedly connected to the lower end of the waterproof plate (8).

8. A bridge expansion joint structure according to claim 1 or 7, characterized in that: A sealing strip (14) is clamped and arranged at the lower end inside the bridge body (1).

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