Bridge head structure for preventing bumping at bridge head of road-bridge transition section

Abstract

The application relates to the road and bridge construction technical field and discloses a bridgehead structure for preventing bumping at a bridgehead of a road and bridge transition section, which comprises a base plate and a road surface plate. A connecting seat is rotationally connected between each of a plurality of leaf springs in pairs. A fixed block is rotationally connected between a plurality of first rotating shafts. A threaded rod is rotationally connected inside four mounting holes. A handle is fixedly connected to the upper end of the threaded rod. The bridgehead structure for preventing bumping at a bridgehead of a road and bridge transition section is capable of flexibly adapting to settlement changes through the arrangement of a plurality of fixing seats, rotating seats, leaf springs and connecting seats. The elastic property of the leaf spring can produce certain deformation to absorb and disperse stress, thereby reducing the bumping phenomenon at the bridgehead caused by uneven settlement. The height of the road surface plate can be adjusted by rotating the handle through the rotationally arranged threaded rod inside the road surface plate, so that the maintenance work is simplified to maintain the flatness of the road surface.

Description

Technical Field

[0001] This application relates to the field of road and bridge construction technology, specifically to a bridge approach structure for preventing vehicle slab settlement at the bridge approach transition section. Background Technology

[0002] Bridge approach slab settlement refers to differential settlement at the junction of a highway bridge approach and its approach road, forming a steep slope or step on the road surface. This causes significant vertical vibration or undulating motion for vehicles traveling at high speeds in this area. With the rapid development of modernization and the construction of roads and bridges, actual surveys have revealed that many major traffic arteries exhibit significant "bridge approach slab settlement" defects during their operation, seriously threatening driving comfort and safety.

[0003] An existing patent (publication number: CN221895548U) discloses a bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section. It is set at the junction of the bridge approach and the roadbed and includes a bridge abutment assembly, approach slab, sleeper beam, roadbed filler layer and pavement layer. The approach slab is set between the bridge abutment assembly and the sleeper beam. The pavement layer is set on the upper surface of the bridge abutment assembly and the approach slab. A back bracket is provided on the back side of the bridge abutment assembly for placing the approach slab. A rubber buffer pad is laid between the back bracket and the approach slab. The bridge deck of the bridge abutment assembly is flush with the approach slab. The roadbed filler layer is located below the approach slab and on both sides of the sleeper beam.

[0004] The aforementioned comparative documents indicate that by setting up approach slabs, sleeper beams, and airbags on the composite underlying structure with multiple splices on the abutment back, the vehicle load is distributed across three different underlying structures through the approach slabs, reducing uneven settlement of the road-bridge transition section caused by stress concentration, improving roadbed stability, and mitigating bridge approach slab slab problems. The airbags, which can be adjusted by inflation, can prevent settlement misalignment and facilitate maintenance work during road operation. However, with prolonged use, the airbags are prone to aging, which may lead to performance degradation, reduced elasticity, or even rupture. The aging of the airbags not only affects their ability to adjust settlement but may also cause safety hazards due to rupture. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a bridge approach structure for preventing bridge approach slab settlement in road-bridge transition sections. This structure has advantages such as improved durability and solves the problem that airbags are prone to aging during long-term use, which may lead to performance degradation, reduced elasticity, or even rupture. The aging of airbags not only affects their ability to regulate settlement but may also cause safety hazards due to rupture.

[0006] To achieve the above objectives, this application provides the following technical solution: a bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section, comprising a base plate and a road panel. The upper end of the base plate is fixedly connected to a plurality of fixed seats arranged in a rectangular array. Each of the plurality of fixed seats is fixedly connected to a rotating seat on one side. Each of the plurality of rotating seats is rotatably connected to a leaf spring. Each of the plurality of leaf springs is rotatably connected to a connecting seat in pairs. Each of the four connecting seats is rotatably connected to a first rotating shaft on both sides. Each of the plurality of first rotating shafts is rotatably connected to a fixed block.

[0007] The road panel has four mounting holes arranged in a rectangular array inside. Each of the four mounting holes is rotatably connected to a threaded rod, and each of the four threaded rods is fixedly connected to a handle at its upper end. The road panel also has four mounting slots arranged in a rectangular array inside. Each of the four mounting slots is slidably connected to a sealing cover.

[0008] The above scheme, through the arrangement of multiple fixed seats, rotating seats, leaf springs, and connecting seats, forms a support structure that can flexibly adapt to settlement changes. The elastic characteristics of the leaf springs allow the entire structure to deform to absorb and disperse stress when subjected to loads or settlement, thereby reducing bridge approach slab settlement caused by uneven settlement. The threaded rods rotating inside the pavement panel allow for convenient adjustment of the pavement panel height via a rotating handle, simplifying maintenance and allowing necessary adjustments during operation based on settlement conditions to maintain pavement flatness. The sliding connection design of the mounting groove and sealing cover ensures that the mounting holes are sealed, preventing moisture, debris, etc., from entering the structure and causing corrosion or damage, thus extending the service life of the structure. This structure has the advantages of flexibly adapting to settlement changes and being easy to adjust and maintain.

[0009] Furthermore, each of the four threaded rods has a baffle fixedly connected to its bottom end.

[0010] Through the above solution, the baffle acts as a limit, preventing the threaded rod from accidentally falling off during the adjustment process, increasing the safety of the structure, and reducing the potential risks caused by the threaded rod falling off.

[0011] Furthermore, each of the four sealing caps has a sealing tube fixedly connected to its bottom end, a second rotating shaft is rotatably connected inside the four sealing caps, and a handle is fixedly connected to the outside of each pair of the second rotating shafts. A storage groove is opened at the top of each of the four sealing caps, and the four handles are slidably disposed inside the storage groove.

[0012] The above design increases the sealing between the sealing cap and the mounting groove, preventing moisture and debris from seeping into the regulating structure through the gap between the sealing cap and the mounting groove, thus keeping the regulating structure dry. The handle design makes it easier to open and close the sealing cap, reducing the difficulty of operation. When the sealing cap is closed, the handle can slide and be stored in the storage groove, maintaining the neatness and aesthetics of the structure.

[0013] Furthermore, both the road panel and the sealing cover have multiple water guide grooves arranged in a linear array on their upper ends.

[0014] The above-mentioned design of the water channel allows water to drain quickly from the road surface, preventing water from stagnating on the road, reducing water erosion, improving road durability, and ensuring the safety and stability of vehicles when driving in rainy weather.

[0015] Furthermore, a ramp is fixedly connected to one side of the road panel, and a plurality of rubber posts arranged in a linear array are fixedly connected to one side of the bottom end of the ramp, and a rubber plate is fixedly connected to the end of the ramp away from the road panel.

[0016] The above scheme achieves a smooth transition between the road surface and the bridgehead or other road structure, which helps to reduce bumps and bounces during vehicle travel and improve driving comfort and safety. The use of rubber posts increases the elasticity of the approach slab, enabling it to adapt to changes such as foundation settlement or road deformation.

[0017] Furthermore, the road panel includes a fixing layer, a waterproof layer fixedly connected to the upper end of the fixing layer, an elastic buffer layer fixedly connected to the upper end of the waterproof layer, a protective layer fixedly connected to the upper end of the elastic buffer layer, and a paving layer fixedly connected to the upper end of the protective layer.

[0018] Through the above scheme, the fixing layer, as the base layer of the pavement slab, provides stable support; the waterproof layer prevents moisture from seeping into the structure from below the pavement slab; the use of the elastic buffer layer increases the elasticity of the pavement slab, enabling it to better adapt to changes such as foundation settlement or road surface deformation, which helps to reduce bumps and jumps during vehicle driving and improve driving comfort and safety; the protective layer is located above the elastic buffer layer and can prevent external factors from directly damaging the road surface; the paving layer, as the top layer of the pavement slab, is used to directly contact vehicle tires.

[0019] Furthermore, all four threaded rods are threaded inside the fixing block.

[0020] The above method allows for adjustment of the position of the fixing block on the outer wall of the threaded rod by rotating the threaded rod.

[0021] Furthermore, all four sealing tubes are slidably disposed inside the mounting holes.

[0022] With the above solution, the sealing tube is slidably installed inside the mounting hole, which can ensure a tight fit between the sealing tube and the mounting hole, preventing moisture, dust and other debris from seeping into the structure from the mounting hole, thereby improving the sealing and waterproof performance of the structure.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This bridge approach structure, designed to prevent approach slab settlement in road-bridge transition sections, utilizes multiple fixed seats, rotating seats, leaf springs, and connecting seats to form a support structure that flexibly adapts to settlement changes. The elastic properties of the leaf springs allow the entire structure to deform under load or settlement, absorbing and dispersing stress, thereby reducing approach slab settlement caused by uneven settlement. The internally rotating threaded rods on the pavement panel allow for convenient height adjustment via a rotating handle, simplifying maintenance and enabling necessary adjustments during operation based on settlement conditions to maintain pavement smoothness. The sliding connection design of the mounting groove and sealing cover ensures the mounting holes are sealed, preventing moisture and debris from entering the structure and causing corrosion or damage, thus extending the structure's service life. This structure offers advantages such as flexible adaptation to settlement changes and ease of adjustment and maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram of the buffer structure of this application;

[0027] Figure 3 This is a schematic diagram of the threaded rod structure of this application;

[0028] Figure 4 This is a schematic diagram of the sealing cap structure of this application;

[0029] Figure 5 This is a cross-sectional view of the road panel structure of this application.

[0030] In the picture:

[0031] 1. Base plate; 2. Fixing seat; 3. Rotating seat; 4. Leaf spring; 5. Connecting seat; 6. First rotating shaft; 7. Fixing block; 8. Road panel; 801. Fixing layer; 802. Waterproof layer; 803. Elastic buffer layer; 804. Protective layer; 805. Paving layer; 9. Mounting hole; 10. Threaded rod; 11. Baffle; 12. Handle; 13. Mounting groove; 14. Sealing cover; 15. Sealing tube; 16. Second rotating shaft; 17. Handle; 18. Storage groove; 19. Water guide groove; 20. Approach plate; 21. Rubber column; 22. Rubber sheet. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section includes a base plate 1 and a road panel 8. Multiple fixed seats 2 arranged in a rectangular array are fixedly connected to the upper end of the base plate 1. Rotating seats 3 are fixedly connected to one side of each fixed seat 2. Leaf springs 4 are rotatably connected inside each of the rotating seats 3. Connecting seats 5 are rotatably connected between each pair of leaf springs 4. The arrangement of the multiple fixed seats 2, rotating seats 3, leaf springs 4, and connecting seats 5 forms a support structure that can flexibly adapt to settlement changes. The elastic characteristics of the leaf springs 4 allow the entire structure to deform to absorb and disperse stress when subjected to loads or settlement, thereby reducing bridge approach slab settlement caused by uneven settlement. The four connecting seats 5 are rotatably connected to the first connecting seats 8 on both sides. A rotating shaft 6 is provided, and fixed blocks 7 are rotatably connected between multiple first rotating shafts 6. Four mounting holes 9 arranged in a rectangular array are opened inside the road panel 8. Threaded rods 10 are rotatably connected inside each of the four mounting holes 9. Handles 12 are fixedly connected to the upper ends of each of the four threaded rods 10. The rotatable threaded rods 10 inside the road panel 8 allow the height of the road panel 8 to be easily adjusted by rotating the handles 12, simplifying maintenance and allowing necessary adjustments to be made during operation according to settlement to maintain the flatness of the road surface. Four mounting slots 13 arranged in a rectangular array are opened inside the road panel 8. Sealing covers 14 are slidably connected inside each of the four mounting slots 13. The sliding connection design of the mounting slots 13 and sealing covers 14 ensures that the mounting holes 9 are sealed.

[0034] Please see Figure 1 , Figure 3 and Figure 4Each of the four threaded rods 10 has a baffle 11 fixedly connected to its bottom end. The baffle 11 serves as a limit, preventing the threaded rods 10 from accidentally falling off during adjustment, increasing structural safety and reducing potential risks caused by the threaded rods 10 falling off. Each of the four sealing covers 14 has a sealing tube 15 fixedly connected to its bottom end. A second rotating shaft 16 is rotatably connected inside each of the four sealing covers 14. Multiple second rotating shafts 16 are paired together and externally fixedly connected to handles 17. Each of the four sealing covers 14 has a storage groove 18 at its upper end, and each of the four handles 17 is slidably disposed inside the storage groove 18. The design of the sealing tube 15 increases the sealing performance between the sealing cover 14 and the mounting groove 13, preventing moisture, debris, etc., from seeping into the adjustment structure through the gap between the sealing cover 14 and the mounting groove 13, keeping the adjustment structure dry. The design of the handles 17 makes it easier to open and close the sealing cover 14, reducing the difficulty of operation. When the sealing cover 14 is in the closed state... The handle 17 can be slidably stored inside the storage slot 18, maintaining the neatness and aesthetics of the structure. Multiple water guide channels 19 arranged in a straight line array are provided on the upper end of both the road panel 8 and the sealing cover 14. The design of the water guide channels 19 allows water on the road surface to be quickly discharged along the channels, avoiding water retention on the road surface, reducing water erosion on the road surface, improving the road surface durability, and ensuring the safety and stability of vehicles when driving in rainy weather. A ramp 20 is fixedly connected to one side of the road panel 8. Multiple rubber posts 21 arranged in a straight line array are fixedly connected to one side of the bottom of the ramp 20. A rubber plate 22 is fixedly connected to the end of the ramp 20 away from the road panel 8. The design of the ramp 20 realizes a smooth transition between the road panel 8 and the bridgehead or other road surface structures, which helps to reduce the bumps and jumps during vehicle driving and improve driving comfort and safety. The use of rubber posts 21 increases the elasticity of the ramp 20, enabling it to adapt to changes such as foundation settlement or road surface deformation.

[0035] Please see Figure 1 , Figure 3 and Figure 5The pavement slab 8 includes a fixing layer 801, a waterproof layer 802 fixedly connected to the upper end of the fixing layer 801, an elastic buffer layer 803 fixedly connected to the upper end of the waterproof layer 802, a protective layer 804 fixedly connected to the upper end of the elastic buffer layer 803, and a pavement layer 805 fixedly connected to the upper end of the protective layer 804. The fixing layer 801 serves as the base layer of the pavement slab 8, providing stable support. The waterproof layer 802 prevents water from seeping into the structure from below the pavement slab 8. The use of the elastic buffer layer 803 increases the elasticity of the pavement slab 8, enabling it to better adapt to changes such as foundation settlement or pavement deformation, helping to reduce bumps and jumps during vehicle operation and improving driving comfort. For safety and reliability, the protective layer 804 is located above the elastic buffer layer 803, which can prevent external factors from directly damaging the road surface. The pavement layer 805, as the top layer of the road slab 8, is used to directly contact the vehicle tires. The four threaded rods 10 are all threaded inside the fixing block 7. By rotating the threaded rods 10, the position of the fixing block 7 on the outer wall of the threaded rods 10 can be adjusted. The four sealing tubes 15 are all slidably installed inside the mounting holes 9. The slidable installation of the sealing tubes 15 inside the mounting holes 9 can ensure a tight fit between the sealing tubes 15 and the mounting holes 9, preventing moisture, dust and other debris from seeping into the structure from the mounting holes 9, thereby improving the sealing and waterproof performance of the structure.

[0036] In this embodiment, the bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section forms a support structure that can flexibly adapt to settlement changes through the arrangement of multiple fixed seats 2, rotating seats 3, leaf springs 4, and connecting seats 5. The elastic characteristics of the leaf springs 4 enable the entire structure to deform to absorb and disperse stress when subjected to loads or settlement, thereby reducing bridge approach slab settlement caused by uneven settlement. The threaded rod 10 rotatably installed inside the road panel 8 allows the height of the road panel 8 to be easily adjusted by rotating the handle 12, simplifying maintenance and allowing necessary adjustments to be made during operation according to settlement conditions to maintain the flatness of the road surface. The sliding connection design of the mounting groove 13 and the sealing cover 14 ensures that the mounting hole 9 is sealed, preventing moisture, debris, etc. from entering the interior of the structure and causing corrosion or damage, thereby extending the service life of the structure. This structure has the advantages of flexibly adapting to settlement changes and being easy to adjust and maintain.

[0037] The working principle of the above embodiments is as follows:

[0038] Fix the base plate 1 to the bridgehead or road junction to ensure stability. Install the fixing seat 2, rotating seat 3, leaf spring 4, and connecting seat 5 to form a stable support structure. Place the road panel 8 on the fixing block 7 and adjust the height of the road panel 8 by rotating the threaded rod 10 until the required flatness is achieved. Install the sealing cover 14 to ensure that the mounting hole 9 is tightly sealed to prevent moisture and debris from seeping in. As the foundation settles or the road surface deforms, the leaf spring 4 deforms due to its elastic properties, absorbing and dispersing stress. The connecting seat 5 and the first rotating shaft 6 allow relative rotation between the leaf spring 4. When it is necessary to adjust the height of the road panel 8 to adapt to settlement changes, the operator can rotate the... Rotate the threaded rod 10 using handle 12 to adjust the position of the fixing block 7 on the outer wall of the threaded rod 10, thereby adjusting the position of the road panel 8. The design of the water channel 19 allows water to drain quickly from the road surface, preventing water retention and road erosion. The multi-layer structure of the road panel 8, including the fixing layer 801, waterproof layer 802, elastic buffer layer 803, protective layer 804, and paving layer 805, provides comprehensive protection, preventing water from seeping into the structure and increasing the elasticity and durability of the road surface. The combined design of the approach slab 20 with the rubber posts 21 and rubber plates 22 achieves a smooth transition between the road panel 8 and the bridgehead, reducing bumps and jumps during vehicle travel.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge approach structure for preventing vehicle slab settlement at the bridge approach transition section, comprising a base plate (1) and a road surface panel (8), characterized in that: The upper end of the substrate (1) is fixedly connected to a plurality of fixed seats (2) arranged in a rectangular array. A rotating seat (3) is fixedly connected to one side of each of the plurality of fixed seats (2). A leaf spring (4) is rotatably connected inside each of the plurality of rotating seats (3). A connecting seat (5) is rotatably connected between each pair of the plurality of leaf springs (4). A first rotating shaft (6) is rotatably connected to both sides inside the four connecting seats (5). A fixing block (7) is rotatably connected between each of the plurality of first rotating shafts (6). The road panel (8) has four mounting holes (9) arranged in a rectangular array inside. Each of the four mounting holes (9) is rotatably connected to a threaded rod (10). Each of the four threaded rods (10) is fixedly connected to a handle (12) at its upper end. The road panel (8) has four mounting slots (13) arranged in a rectangular array inside. Each of the four mounting slots (13) is slidably connected to a sealing cover (14).

2. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: Each of the four threaded rods (10) has a baffle (11) fixedly connected to its bottom end.

3. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: Each of the four sealing caps (14) has a sealing tube (15) fixedly connected to its bottom end. The four sealing caps (14) are rotatably connected to a second rotating shaft (16). Each of the second rotating shafts (16) is connected to a handle (17) in pairs on the outside. The four sealing caps (14) have a storage groove (18) at their top ends. The four handles (17) are slidably disposed inside the storage groove (18).

4. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: Both the road panel (8) and the sealing cover (14) have multiple water guide grooves (19) arranged in a straight line array on their upper ends.

5. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: A ramp (20) is fixedly connected to one side of the road panel (8), and a plurality of rubber posts (21) arranged in a straight line array are fixedly connected to one side of the bottom end of the ramp (20). A rubber plate (22) is fixedly connected to the end of the ramp (20) away from the road panel (8).

6. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: The road panel (8) includes a fixing layer (801), a waterproof layer (802) is fixedly connected to the upper end of the fixing layer (801), an elastic buffer layer (803) is fixedly connected to the upper end of the waterproof layer (802), a protective layer (804) is fixedly connected to the upper end of the elastic buffer layer (803), and a paving layer (805) is fixedly connected to the upper end of the protective layer (804).

7. The bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 1, characterized in that: All four threaded rods (10) are threaded inside the fixing block (7).

8. A bridge approach structure for preventing bridge approach slab settlement in a road-bridge transition section according to claim 3, characterized in that: All four sealing tubes (15) are slidably disposed inside the mounting hole (9).

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