Water-blocking and noise-reducing bridge expansion joint device
By introducing shock filter rubber into the bridge expansion joints to absorb vibration energy, combining saddle beams and guide structures to achieve water barrier and noise reduction and adaptive adjustment, the water leakage and noise pollution problems in traditional bridge expansion joints are solved, and the durability and driving comfort of the bridge structure are improved.
Patent Information
- Application Number
- CN202510874920.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional bridge expansion joints are prone to aging and cracking during long-term use, resulting in water leakage and noise pollution, and are difficult to maintain. They cannot adapt to the settlement and deformation of the bridge, affecting the durability of the bridge structure and driving comfort.
A water-blocking and noise-reducing bridge expansion joint device is designed, which uses vibration filter rubber to absorb vibration energy, and a sliding connection structure between the saddle beam and the directional guide groove. It is combined with the guide column and guide sleeve guide, and the rotational cooperation between the top rod and the top rod connecting seat to achieve smooth expansion and contraction of the device, and the level of the cover panel is adjusted through the adjustment hole to adapt to the bridge settlement and deformation.
Effectively prevent water leakage, reduce noise, keep the device stable, adapt to bridge deformation, reduce maintenance costs and workload, and improve bridge durability and driving comfort.
Smart Images
Figure CN120486243A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of bridge expansion joints, and in particular to a water-blocking and noise-reducing bridge expansion joint device. Background Art
[0002] In the field of bridge engineering, bridge expansion joints are key structures used to accommodate the expansion and contraction deformation of bridge structures caused by temperature changes, concrete shrinkage and creep, and vehicle loads. However, traditional bridge expansion joints have the following technical pain points in practical applications: Traditional expansion joints often use a single rubber seal, which is susceptible to aging and cracking from prolonged vehicle pressure. This allows rainwater, snowmelt, and other liquids to seep into bridge bearings and piers, accelerating steel corrosion and concrete carbonization, shortening the bridge's service life. Existing drainage structures are poorly designed, and debris accumulation easily blocks drainage pathways, leading to prolonged water retention and further structural damage.
[0003] The rigid connection structure of traditional expansion joints easily generates strong impact noise when vehicles pass through them, especially on heavily trafficked roads. This creates a significant noise pollution problem, impacting the surrounding environment and driving comfort. The lack of effective vibration dampening allows vibration energy to be directly transmitted to the bridge structure, potentially inducing structural resonance and reducing bridge durability. The guide mechanism of traditional expansion joints lacks precision, making them prone to misalignment or jamming during expansion and contraction, leading to device failure. Furthermore, they are unable to adapt to uneven settlement of the bridge over long periods of use, resulting in a decrease in bridge deck smoothness.
[0004] Maintenance requires the entire device to be disassembled, which is labor-intensive and costly. It is also difficult to replace locally damaged components (such as rubber strips and shock-absorbing elements) individually, impacting normal traffic on the bridge. While some improved expansion joints have added drainage channels or shock-absorbing pads, they lack a systematic water-blocking and noise-reducing solution, and the various functional modules exhibit poor synergy. For long-span bridges or heavy-load traffic scenarios, the structural strength and durability of traditional expansion joints still cannot meet demand, and new devices that combine water blocking, noise reduction, adaptive adjustment, and convenient maintenance are urgently needed. Therefore, to address the above issues, this proposal proposes a water-blocking and noise-reducing bridge expansion joint device. Summary of the Invention
[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provide a water-blocking and noise-reducing bridge expansion joint device. The vibration-absorbing rubber provided under the cover plate can absorb the vibration energy generated by vehicles passing by, thereby reducing the impact noise between the bridge deck and the expansion joint. The water guide belt connects the rubber block mounting seats on both sides and can guide the infiltrated water to the outside of the device to prevent water from seeping downward. The sliding connection structure between the saddle beam and the directional guide groove, combined with the guiding function of the guide column and guide sleeve, allows the device to remain stable during the extension and retraction process. Through the rotational cooperation between the top rod and the top rod connecting seat, the top rod can be adjusted through the adjustment hole using a hexagonal wrench, thereby adjusting the horizontality of the cover panel to adapt to the settlement or deformation of the bridge after long-term use, ensuring that the device always remains flush with the bridge deck and maintains a good stress state.
[0006] The present invention also provides the above-mentioned water-blocking and noise-reducing bridge expansion joint device, comprising a noise reduction unit, wherein the noise reduction unit is provided with two groups, and the two groups of noise reduction units each comprise: an L-shaped base plate, the upper surface of the L-shaped base plate is fixedly connected to a support seat, the upper surface of the support seat is fixedly connected to directional guide grooves on both sides, the upper surface of the support seat is fixedly connected to a guide column, the upper surface of the support seat is movably connected to a bottom plate, the upper surface of the bottom plate is fixedly connected to a saddle beam, and the left and right ends of the saddle beam are respectively slidably connected to the directional guide grooves on both sides; The upper surface of the saddle beam is fixedly connected to a vibration-absorbing rubber, the upper surface of the vibration-absorbing rubber is fixedly connected to a sealing panel, the side of the sealing panel close to the L-shaped base plate is fixedly connected to a rubber strip, the side of the sealing panel away from the L-shaped base plate is fixedly connected to a rubber block mounting seat, the upper surface of the rubber block mounting seat is fixedly connected to a telescopic rubber block, the rubber block mounting seat in another group of the noise reduction units is fixedly connected to the other side of the telescopic rubber block, the outer surface of the rubber block mounting seat is fixedly connected to a water guide belt, and the rubber block mounting seat in another group of the noise reduction units is fixedly connected to the other side of the water guide belt; The upper surface of the base plate is fixedly connected to a guide sleeve, the guide column passes through the base plate and is slidably connected to the guide sleeve, a push rod is threadedly connected to the center of the saddle beam, the upper surface of the support seat is fixedly connected to a push rod connecting seat, and the lower end surface of the push rod is rotatably connected to the push rod connecting seat.
[0007] The present invention provides a water-blocking and noise-reducing bridge expansion joint device comprising multiple cover panels, each with an adjustment hole defined in its upper surface. A cover plate is removably connected to the upper end of each adjustment hole. This multi-panel design accommodates variations in bridge expansion joint lengths and prevents cracking of a single panel due to large spans. The adjustment holes, combined with the removable cover plate, allow internal push rods to be adjusted using a hexagonal wrench without disassembling the entire device, enabling rapid calibration of the panel's levelness, reducing subsequent maintenance costs and workload.
[0008] According to a water-blocking and noise-reducing bridge expansion joint device provided by the present invention, two pieces of shock-absorbing rubber are provided on the lower surface of each of the sealing panels, the top rod is located between the two pieces of shock-absorbing rubber, and the upper end surface of the top rod is provided with a hexagonal screw head, and the hexagonal wrench can be connected to the hexagonal screw head on the upper end surface of the top rod through the adjustment hole. The two pieces of shock-absorbing rubber are symmetrically distributed on both sides of the top rod to form a stable elastic support structure, which not only enhances the shock-absorbing effect of the sealing panel, but also provides symmetrical force points for the adjustment of the top rod, avoiding eccentric loads during adjustment; the cooperation between the hexagonal screw head and the adjustment hole makes the height adjustment operation of the top rod more convenient, and is suitable for precision calibration after long-term settlement of the bridge.
[0009] According to the present invention, a water-blocking and noise-reducing bridge expansion joint device comprises two sets of L-shaped baseplates arranged in a mirrored configuration. The left L-shaped baseplate is bolted to the left side of the bridge, while the right L-shaped baseplate is bolted to the right side of the bridge. These mirrored L-shaped baseplates symmetrically distribute loads on both sides of the bridge, ensuring uniform force distribution across the expansion joint device and preventing structural deviation caused by unilateral force. The bolted connection facilitates on-site installation and disassembly, while providing reliable anchoring strength and ensuring coordinated deformation between the device and the bridge.
[0010] According to the present invention, a water-blocking and noise-reducing bridge expansion joint device features a screen fixedly attached to the side surface of the left L-shaped base plate, with the other side of the screen fixedly attached to the surface of the right L-shaped base plate. The screen covers the bottom space of the expansion joint, preventing the accumulation of debris such as stones and fallen leaves, thereby preventing clogging of the drainage path. Furthermore, the screen reduces airflow disturbances caused by passing vehicles, preventing debris from splashing, and improving safety and maintenance ease in the expansion joint area.
[0011] According to the present invention, a water-blocking and noise-reducing bridge expansion joint device features a rubber strip retaining groove at the junction between the sealing panel and the rubber strip. The rubber strip and the retaining groove interlock with each other. This interlocking structure forms a tight sealing interface, effectively preventing liquids such as rainwater and snow-melting agents from penetrating the bridge structure. This design enhances the secure installation of the rubber strip, preventing it from falling off due to long-term vehicle pressure, and extending the service life of the water-blocking component.
[0012] In a water-blocking and noise-reducing bridge expansion joint device provided by the present invention, the upper surface of the expansion rubber block is flush with the upper surface of the cover plate. This flush design eliminates the height difference between the bridge deck and the expansion joint, reducing the bumpy feeling during vehicle traffic and improving driving comfort. It also prevents premature wear of the rubber block edges caused by the height difference and ensures that the expansion rubber block maintains a good elastic buffering effect when the bridge expands and contracts due to heat.
[0013] In a water-blocking, noise-reducing bridge expansion joint device provided by the present invention, the lower surface of the vibration-isolating rubber is fixedly connected to the base plate. This fixed connection ensures the effective transmission and absorption of vibration energy, preventing a decrease in shock absorption performance due to displacement of the rubber layer. This structure enables the vibration-isolating rubber to maintain stable elastic deformation under long-term loads, continuously providing reliable noise reduction and buffering for the cover plate.
[0014] Compared with the existing technology, the water-blocking and noise-reducing bridge expansion joint device of the present invention can absorb the vibration energy generated by the passing of vehicles through the shock-absorbing rubber arranged under the sealing panel, thereby reducing the impact noise between the bridge deck and the expansion joint. The water guide belt connects the rubber block mounting seats on both sides, which can guide the infiltrated water to the outside of the device to prevent water from seeping downward.
[0015] Compared with the prior art, the present invention provides a water-blocking and noise-reducing bridge expansion joint device, a sliding connection structure between the saddle beam and the directional guide groove, and the guiding function of the guide column and the guide sleeve, so that the device remains stable during the expansion and contraction process, and through the rotational cooperation between the top rod and the top rod connecting seat, the top rod can be adjusted using a hexagonal wrench through the adjustment hole, thereby adjusting the horizontality of the covering panel to adapt to the settlement or deformation of the bridge after long-term use, ensuring that the device always remains flush with the bridge deck and maintains a good stress state. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of a water-blocking and noise-reducing bridge expansion joint device according to the present invention; Figure 2 This is an exploded view of a water-blocking and noise-reducing bridge expansion joint device according to the present invention; Figure 3 This is a schematic structural diagram of the noise reduction portion of a water-blocking and noise-reducing bridge expansion joint device according to the present invention; Figure 4 This is a schematic diagram of the connection structure of the left and right parts of a water-blocking and noise-reducing bridge expansion joint device of the present invention.
[0017] Legend: 1. L-shaped base plate; 2. Telescopic rubber block; 3. Left bridge body; 4. Right bridge body; 5. Blocking net; 6. Covering panel; 7. Vibration-absorbing rubber; 8. Rubber strip; 9. Saddle beam; 10. Support seat; 11. Guide column; 12. Guide sleeve; 13. Directional guide groove; 14. Push rod; 15. Push rod connecting seat; 16. Adjustment hole; 17. Cover plate; 18. Rubber block mounting seat; 19. Rubber strip slot; 20. Water guide belt; 21. Bottom plate. DETAILED DESCRIPTION
[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.
[0019] Reference Figure 1-4 , an embodiment of the present invention provides a water-blocking and noise-reducing bridge expansion joint device, which includes a noise reduction unit. The noise reduction unit is provided with two groups, and the two groups of noise reduction units each include: an L-shaped base plate 1, the upper surface of the L-shaped base plate 1 is fixedly connected to a support seat 10, and the left and right sides of the upper surface of the support seat 10 are fixedly connected to directional guide grooves 13, the upper surface of the support seat 10 is fixedly connected to a guide column 11, and the upper surface of the support seat 10 is movably connected to a bottom plate 21, and the upper surface of the bottom plate 21 is fixedly connected to a saddle beam 9, and the left and right ends of the saddle beam 9 are respectively slidably connected to the directional guide grooves 13 on both sides; The upper surface of the saddle beam 9 is fixedly connected to the shock-absorbing rubber 7, and the upper surface of the shock-absorbing rubber 7 is fixedly connected to the sealing panel 6. The side of the sealing panel 6 close to the L-shaped substrate 1 is fixedly connected to the rubber strip 8, and the side of the sealing panel 6 away from the L-shaped substrate 1 is fixedly connected to the rubber block mounting seat 18. The upper surface of the rubber block mounting seat 18 is fixedly connected to the telescopic rubber block 2, and the rubber block mounting seat 18 in another group of noise reduction units is fixedly connected to the other side of the telescopic rubber block 2. The outer surface of the rubber block mounting seat 18 is fixedly connected to the water guide belt 20, and the rubber block mounting seat 18 in another group of noise reduction units is fixedly connected to the other side of the water guide belt 20; the upper surface of the bottom plate 21 is fixedly connected to the guide sleeve 12, the guide column 11 passes through the bottom plate 21 and is slidably connected to the guide sleeve 12, and the center of the saddle beam 9 is threadedly connected to the top rod 14, the upper surface of the support seat 10 is fixedly connected to the top rod connecting seat 15, and the lower end face of the top rod 14 is rotatably connected to the top rod connecting seat 15.
[0020] There are multiple sealing panels 6, each with an adjustment hole 16 on its upper surface. A cover plate 17 is detachably connected to the upper end of the adjustment hole 16. Two vibration-filtering rubbers 7 are provided on the lower surface of each sealing panel 6. A push rod 14 is located between the two vibration-filtering rubbers 7. The upper end of the push rod 14 has a hexagonal screw head, and a hexagonal wrench can be connected to the hexagonal screw head on the upper end of the push rod 14 through the adjustment hole 16.
[0021] The two groups of L-shaped base plates 1 are distributed in left and right mirror images. The left L-shaped base plate 1 is fixedly connected to the left bridge body 3 by bolts, and the right L-shaped base plate 1 is fixedly connected to the right bridge body 4 by bolts. The side surface of the left L-shaped base plate 1 is fixedly connected to the blocking net 5, and the other side of the blocking net 5 is fixedly connected to the surface of the right L-shaped base plate 1. A rubber strip slot 19 is provided at the connection between the cover panel 6 and the rubber strip 8, and the rubber strip 8 and the rubber strip slot 19 are engaged with each other. The upper surface of the telescopic rubber block 2 is flush with the upper surface of the cover panel 6. The lower surface of the shock-absorbing rubber 7 is fixedly connected to the bottom plate 21.
[0022] Working Principle: The rubber strip 8 on the side of the cover panel 6 near the L-shaped base plate 1 is inserted into the rubber strip slot 19, forming a sealed barrier to prevent water from seeping into the bridge deck. A water guide 20 on the outer surface of the rubber block mounting bracket 18 connects the noise reduction units on both sides. If water seeps in, the water guide 20 guides it outward for drainage. A screen 5 on the left side of the L-shaped base plate 1 covers the bottom of the expansion joint to prevent debris from clogging the drainage path.
[0023] The shock-absorbing rubber 7 below the cover panel 6 is fixed to the saddle beam 9 to absorb the vibration energy generated by the vehicle rolling over and reduce the impact noise. The telescopic rubber block 2 is fixed to the rubber block mounting seat 18, and the upper surface is flush with the cover panel 6, providing a certain deformation amount for the telescopic displacement at the bridge joint. The two ends of the saddle beam 9 slide along the directional guide groove 13, and the guide column 11 cooperates with the guide sleeve 12 to ensure smooth movement of the device during expansion and contraction. The saddle beam 9 is connected to the guide column 11 and the guide sleeve 12 through the bottom plate 21, and slides horizontally along the directional guide groove 13. The guide column 11 and the guide sleeve 12 allow fine adjustment in the vertical direction to adapt to the deformation of the bridge. Open the cover plate 17 through the adjustment hole 16, and use a hexagonal wrench to rotate the top rod 14. The lower end of the top rod 14 rotates and cooperates with the top rod connecting seat 15 to push the saddle beam 9 to adjust the horizontality of the cover panel 6.
[0024] Components such as the rubber strips 8, shock-absorbing rubber 7, and telescopic rubber blocks 2 are installed independently and can be removed and replaced directly in the event of aging or damage, without dismantling the entire device. Adjustment holes 16 on the cover panel 6 are equipped with removable covers 17, allowing internal components such as the push rods 14 to be adjusted or maintained directly through these holes during maintenance. The shock-absorbing rubber 7 absorbs vibrations generated by the wheels rolling over the cover panel 6, while the telescopic rubber blocks 2 buffer the bridge's telescopic displacement. The rubber strips 8 block surface water flow, the water guides 20 guide infiltrated water out, and the net 5 prevents clogging by debris, forming a three-dimensional water-blocking system.
[0025] The saddle beam 9 slides along the directional guide groove 13, the guide column 11 and the guide sleeve 12 cooperate for guidance, and the top rod 14 adjusts the horizontality of the cover panel 6 to ensure that the flatness of the device and the bridge deck can be effectively adjusted during later maintenance.
[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.
Claims
1. A water-blocking and noise-reducing bridge expansion joint device, comprising a noise reduction unit, characterized in that: The noise reduction units are provided with two groups, and both groups of the noise reduction units include: an L-shaped substrate (1), the upper surface of the L-shaped substrate (1) is fixedly connected to a support seat (10), the left and right sides of the upper surface of the support seat (10) are fixedly connected to directional guide grooves (13), the upper surface of the support seat (10) is fixedly connected to a guide column (11), the upper surface of the support seat (10) is movably connected to a bottom plate (21), the upper surface of the bottom plate (21) is fixedly connected to a saddle beam (9), and the left and right ends of the saddle beam (9) are respectively slidably connected to the directional guide grooves (13) on both sides; The upper surface of the saddle beam (9) is fixedly connected to a vibration-absorbing rubber (7), the upper surface of the vibration-absorbing rubber (7) is fixedly connected to a sealing panel (6), the side of the sealing panel (6) close to the L-shaped base plate (1) is fixedly connected to a rubber strip (8), the side of the sealing panel (6) away from the L-shaped base plate (1) is fixedly connected to a rubber block mounting seat (18), the upper surface of the rubber block mounting seat (18) is fixedly connected to a telescopic rubber block (2), the rubber block mounting seat (18) in another group of the noise reduction units is fixedly connected to the other side of the telescopic rubber block (2), the outer surface of the rubber block mounting seat (18) is fixedly connected to a water guide belt (20), and the rubber block mounting seat (18) in another group of the noise reduction units is fixedly connected to the other side of the water guide belt (20); The upper surface of the base plate (21) is fixedly connected to a guide sleeve (12), the guide column (11) passes through the base plate (21) and is slidably connected to the guide sleeve (12), a push rod (14) is threadedly connected to the center of the saddle beam (9), the upper surface of the support seat (10) is fixedly connected to a push rod connecting seat (15), and the lower end surface of the push rod (14) is rotatably connected to the push rod connecting seat (15).
2. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: The sealing panels (6) are provided in multiple pieces, and an adjustment hole (16) is provided on the upper surface of the sealing panel (6). A cover plate (17) is detachably connected to the upper end of the adjustment hole (16).
3. The water-blocking and noise-reducing bridge expansion joint device according to claim 2, characterized in that: Two pieces of the vibration-filtering rubber (7) are provided on the lower surface of each of the sealing panels (6), and the push rod (14) is located between the two pieces of the vibration-filtering rubber (7). The upper end surface of the push rod (14) is provided with a hexagonal screw head, and the hexagonal wrench can be connected to the hexagonal screw head on the upper end surface of the push rod (14) through the adjustment hole (16).
4. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: The two groups of L-shaped base plates (1) are distributed in a left-right mirror image, the left L-shaped base plate (1) is fixedly connected to the left bridge body (3) by bolts, and the right L-shaped base plate (1) is fixedly connected to the right bridge body (4) by bolts.
5. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: A blocking net (5) is fixedly connected to the side surface of the left L-shaped base plate (1), and the other side of the blocking net (5) is fixedly connected to the surface of the right L-shaped base plate (1).
6. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: A rubber strip slot (19) is provided at the connection between the cover panel (6) and the rubber strip (8), and the rubber strip (8) and the rubber strip slot (19) are engaged with each other.
7. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: The upper surface of the telescopic rubber block (2) is flush with the upper surface of the cover panel (6).
8. The water-blocking and noise-reducing bridge expansion joint device according to claim 1, characterized in that: The lower surface of the vibration-absorbing rubber (7) is fixedly connected to the bottom plate (21).