Water ripple bridge expansion device

Abstract

The invention relates to a water ripple bridge expansion device which comprises an expansion panel, a stainless steel dustproof sliding plate, a fixed panel, an expansion displacement box assembly, an anchoring structure, a water stop system and the like. All the telescopic panels are movably connected through telescopic displacement box assemblies and telescopic chains below the telescopic panels, the two telescopic panels located on the outer side are fixedly connected with embedded steel bars at the two ends of the bridge expansion joints correspondingly, the telescopic displacement box assemblies are arranged between the bridge expansion joints below the telescopic panels, and the water stopping system is arranged below the telescopic displacement box assemblies. The fixed panel is arranged at the top of the telescopic displacement box assembly, and the stainless steel dustproof sliding plate is arranged at the bottom of the telescopic panel and slidably connected with the fixed panel. The wave-shaped telescopic panel is adopted, non-blocking self-adaptive deformation in the 20-400 mm ultra-large expansion amount interval is achieved, meanwhile, the noise reduction function is achieved, and a high-performance solution is provided for expansion joint engineering.

Description

Technical Field

[0001] This invention belongs to the field of bridge expansion joint technology, and specifically relates to a water ripple bridge expansion device. Background Technology

[0002] Bridge expansion joints, as an indispensable core functional component of bridge structures, are key compensation nodes for deformation caused by various factors such as temperature changes, load effects, and foundation settlement. Their performance directly determines the safety of the bridge during long-term service, the economic cost of operation and maintenance, and the overall life-cycle value of the structure. With the deepening of my country's strategy to build a strong transportation network, high-grade highway bridges are rapidly developing towards larger spans, heavier loads, and longer lifespans, which places higher and more stringent technical requirements on the comprehensive performance of expansion joints. However, existing expansion joint technologies still have significant performance shortcomings and technical bottlenecks in terms of material durability, structural adaptability, and dynamic response capabilities, making it difficult to meet the ever-increasing practical needs of current high-grade highway bridge projects. Summary of the Invention

[0003] In view of this, the purpose of this invention is to address the shortcomings of the prior art by providing a water ripple bridge expansion joint to meet the engineering application standards for high-grade highway bridges.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A water ripple bridge expansion joint includes an expansion panel, a stainless steel dustproof sliding plate, a fixed panel, an expansion displacement box assembly, and a water-stopping system. The expansion panels are wavy strip structures, and multiple expansion panels are arranged side by side. All expansion panels are movably connected by expansion chains. The two expansion panels on the outer side are fixedly connected to both ends of the bridge expansion joint. The expansion displacement box assembly is located between the bridge expansion joints below the expansion panels. The water-stopping system is located below the expansion displacement box assembly. The fixed panel is located on top of the expansion displacement box assembly. The stainless steel dustproof sliding plate is located at the bottom of the expansion panel and is slidably connected to the fixed panel.

[0006] To better realize the present invention, the above structure is further optimized, and the water-stopping system is made of stainless steel.

[0007] To better realize the present invention, the above structure is further optimized. The water-stopping system includes two bearing plates set at both ends of the bridge expansion joint and a seepage-proof water-stopping plate set between the two bearing plates. The seepage-proof water-stopping plate is a downwardly curved arc structure. The bearing plates and the seepage-proof water-stopping plate are fastened together by fixing bolts.

[0008] To better realize the present invention, the above structure is further optimized, both bearing plates are set vertically, and the two ends of the seepage-proof and water-stopping plate are respectively attached to the inner side surfaces of the two bearing plates.

[0009] To better realize the present invention, the above structure is further optimized by providing anchoring steel bars on the bearing plate.

[0010] To better realize the present invention, the above structure is further optimized, and the surface of the telescopic panel is successively treated by sandblasting to remove rust, spraying primer and spraying topcoat.

[0011] To better realize the present invention, the above structure is further optimized by providing a stainless steel dustproof sliding plate between each pair of adjacent telescopic panels.

[0012] To better realize the present invention, the above structure is further optimized. The telescopic displacement box assembly includes two displacement boxes disposed at both ends of the bridge expansion joint and a support beam slidably disposed between the two displacement boxes.

[0013] To better realize the present invention, the above structure is further optimized by fixing the panel on the top of the support beam via a support.

[0014] To better realize the present invention, the above structure is further optimized, and the telescopic chain is a parallelogram telescopic mechanism.

[0015] Compared with the prior art, the present invention has the following advantages: The water ripple bridge expansion joint device provided by this invention adopts a wave-shaped expansion panel to achieve seamless adaptive deformation within an ultra-large expansion range of 20-400mm. Compared with traditional flat expansion joint devices, the smoothness of the expansion movement is significantly improved, effectively reducing vibration and noise generated by vehicle load impact, and has a noise reduction function, greatly improving driving comfort and structural stability in heavy traffic scenarios. Secondly, it innovatively adopts a stainless steel waterstop system to replace the traditional easily aging rubber waterstop, effectively improving weather resistance and corrosion resistance. Combined with a waterproof caulking system, it can achieve zero water leakage risk throughout the bridge's service life, fundamentally eliminating durability problems such as steel reinforcement corrosion and concrete carbonization, reducing the bridge structure's operation and maintenance costs by more than 60%. This provides a high-performance solution for expansion joint engineering of high-grade highway bridges. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the structural schematic diagrams of the water ripple bridge expansion joint of the present invention; Figure 2 This is a top view of the telescopic panel in this invention; Figure 3 This is a side view of the water-stopping system of the present invention; Figure 4 This is a side view of the telescopic displacement box assembly in this invention; Figure 5 This is a side view of the telescopic chain in this invention; Figure 6 This is the second schematic diagram of the structure of the water ripple bridge expansion joint of the present invention; Figure 7 This is the third structural schematic diagram of the water ripple bridge expansion joint of the present invention.

[0018] In the picture: 1-Telescopic panel, 2-Stainless steel dustproof sliding plate, 3-Fixed panel, 301-Support, 4-Telescopic displacement box assembly, 401-Displacement box, 402-Support beam, 5-Waterstop system, 501-Bearing plate, 502-Waterproof and seepage-stopping plate, 503-Fixing bolt, 504-Anchoring steel bar, 6-Telescopic chain, 7-Bridge, 8-Concrete base. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example 1: Please refer to Figures 1 to 5 The water ripple bridge expansion joint provided in this embodiment mainly consists of an expansion panel 1, a stainless steel dustproof sliding plate 2, a fixed panel 3, an expansion displacement box assembly 4, and a water-stopping system 5. The expansion panel 1 is designed as a wave-shaped strip structure, with three panels arranged side-by-side. This unique wave-shaped structure allows the device to achieve seamless adaptive deformation within a large expansion range of 20 mm to 400 mm, especially under intermediate temperature conditions, where the theoretical expansion range can reach 120 to 200 mm. Compared with traditional flat-plate expansion joints, this device significantly improves the smoothness of the expansion movement, effectively reduces vibration and noise caused by vehicle load impact, and thus greatly improves driving comfort and overall structural stability in heavy-load traffic scenarios. Supporting ribs are provided at the bottom of the expansion panel 1 to improve overall structural stability. The two outer expansion panels 1 are fixedly connected to the pre-embedded reinforcing bars at both ends of the bridge expansion joint 7. The telescopic displacement box assembly 4 is arranged in the expansion joint section of the bridge 7 below the telescopic panel 1. All the telescopic panels 1 are movably connected through the telescopic displacement box assembly 4 and the telescopic chain. The water-stopping system 5 is installed below the telescopic displacement box assembly 4. The fixed panel 3 is fixed to the top of the telescopic displacement box assembly 4. The stainless steel dustproof sliding plate 2 is laid on the bottom of the telescopic panel 1 and forms a sliding connection with the fixed panel 3.

[0023] Traditional expansion joints typically use rubber waterstops as the core waterproofing component. However, the weather resistance and fatigue resistance of these polymer materials often do not match the design service life of the bridge structure. Under the combined effects of drastic temperature changes (-30℃ to 60℃), repeated impacts from vehicle loads (up to millions of times), and acid and alkali corrosion, rubber waterstops are prone to aging, cracking, and debonding. This leads to water seepage from the bridge deck directly eroding the steel reinforcement within the beam, causing serious durability problems such as steel corrosion and concrete carbonization. Statistics show that these problems have become the leading cause of premature large-scale repairs of bridge structures, resulting in economic losses of up to billions of yuan annually.

[0024] To address the aforementioned issues, this application innovatively employs a stainless steel waterstop system 5. This waterstop system 5 specifically includes two load-bearing plates 501 respectively installed at both ends of the bridge expansion joint, and a seepage-proof waterstop plate 502 located between the two load-bearing plates 501. The seepage-proof waterstop plate 502 is designed with a downwardly curved arc structure, and the load-bearing plates 501 and the seepage-proof waterstop plate 502 are reliably fastened together by fixing bolts 503. Both load-bearing plates 501 are installed vertically, and the two ends of the seepage-proof waterstop plate 502 are tightly fitted to the inner surfaces of the two load-bearing plates 501, so that the seepage-proof waterstop plate 502 moves in tandem with the changes in the bridge expansion joint. By replacing the traditional easily aging rubber waterstop with the stainless steel waterstop system 5, the weather resistance and corrosion resistance of the device are effectively improved. Combined with a waterproof caulking system that extends to the outside of the crash barrier, this design can achieve zero water seepage risk throughout the entire service life of the bridge, fundamentally eliminating durability problems such as steel reinforcement corrosion and concrete carbonization, and reducing the operation and maintenance cost of the bridge structure by more than 60%.

[0025] Anchor steel bars 504 are installed on the bearing plate 501. Existing anchoring processes typically employ non-standardized steel bar arrangements, lacking quantitative mechanical design basis for the connection between the embedded steel bars and the main reinforcement of the bridge body. During on-site construction, insufficient anchoring force is easily caused by deviations in the embedded position, leading to structural failures such as loosening and detachment of the expansion joint. This application effectively solves the problem of insufficient anchoring force caused by on-site pre-embedding deviations by using N16 embedded steel bars arranged at 200 mm intervals in a standardized manner. This significantly enhances the tensile strength of the anchoring system, thereby ensuring the rigid connection stability between the expansion joint and the bridge structure, completely avoiding structural failures such as loosening and detachment of the device, and enabling it to adapt to the complex construction conditions of various mainline bridges and ramp bridges. If the anchoring effect of the embedded steel bars in the bridge deck pavement layer is not ideal, the embedded height needs to be adjusted and the steel bars extended into the beam body. The length of the expansion joint is customized according to the actual width of the bridge deck. At the same time, the waterproof structure and waterproof caulking strip extend to the outside of the crash barrier to achieve comprehensive protection.

[0026] The surface of the expansion joint panel 1 undergoes a composite anti-corrosion process involving sandblasting for rust removal, primer application, and topcoat application. The coating adhesion strictly meets the Class 1 standard specified in GB / T 9286-1998, enabling it to withstand long-term wear from heavy traffic and corrosion from harsh atmospheric environments. The entire device meets the Class I load requirements for highways and conforms to the highest standard of JT / T 327-2016. It is suitable for the construction of 240 to 400 type expansion joints on mainline and ramp bridges, and its service life is 2 to 3 times longer than traditional devices, highly consistent with the design concept of "century-long projects" for bridges.

[0027] A stainless steel dustproof sliding plate 2 is provided between each pair of adjacent telescopic panels 1. This design not only further reduces the frictional resistance between the telescopic panel 1 and the fixed panel 3, but also plays an effective role in shielding and preventing rainwater from entering the interior of the telescopic displacement box assembly 4 below through the gap between the telescopic panels 1, thereby enhancing the sealing and durability of the device.

[0028] In this embodiment, the expansion joint assembly 4 includes two displacement boxes 401 respectively installed inside the concrete bases 8 at both ends of the expansion joint of the bridge 7, and a support beam 402 slidably connected between the two displacement boxes 401. When the width of the expansion joint of the bridge 7 changes due to temperature changes, load effects, or other factors, the displacement boxes 401 at both ends can respectively generate corresponding displacements with the bridge structure, while the support beam 402 achieves smooth adaptive adjustment between the two displacement boxes 401, thereby effectively adapting to the expansion and contraction deformation of the bridge. The fixed panel 3 is stably installed on the top of the support beam 402 with the aid of the support 301. This arrangement not only enhances the load-bearing capacity of the superstructure, but also further improves the structural stability and operational reliability of the entire expansion device in long-term use.

[0029] This device adopts an advanced biomimetic structural design concept, combined with a comprehensive upgrade of the material system and standardized innovation in manufacturing processes. Through the synergistic empowerment of multiple technological dimensions, it effectively breaks through the key technical bottlenecks of traditional bridge expansion joints in terms of adaptability to large deformation conditions, long-term efficient waterproof sealing performance, anchoring system reliability, and service life and durability. This technological achievement significantly improves the overall performance of expansion joints, providing a high-performance, intelligent, and systematic solution for high-grade highway bridge expansion joint projects, and possesses good engineering applicability and promotional application value.

[0030] Example 2: Please refer to Figure 6 The structural diagram shown illustrates that the water ripple bridge expansion joint provided in this embodiment is basically the same as the aforementioned embodiment in terms of overall structure. The main difference lies in the parallel arrangement of the expansion panels 1, specifically four independent panel units. Furthermore, to clearly demonstrate the sliding connection structure and cooperation between the stainless steel dustproof sliding plate 2 and the fixed panel 3, the structure of parts such as the support 301 has been simplified and is not shown in the accompanying drawings, facilitating a more intuitive understanding of the key components.

[0031] Example 3: Please refer to Figure 7The schematic diagram shows that this embodiment further provides a water ripple bridge expansion joint device, which differs from the previous embodiment in that the number of expansion panels 1 is set to 5, arranged in a side-by-side configuration. In practical applications, the specific number of expansion panels 1 can be independently designed and flexibly adjusted according to engineering needs, thereby meeting the customized expansion joint length requirements of bridges with different spans. This device can be precisely customized in size according to the actual width of the bridge deck, and combined with the overall coordinated layout design of waterproof structure and crash barriers, it effectively adapts to the structural characteristics of various bridge types and the spatial conditions of the construction site. Its modular design concept significantly simplifies the on-site installation steps, greatly improves construction efficiency and project quality, and provides reliable technical support and practical guarantee for the rapid and standardized construction of high-grade highway bridges.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water ripple bridge expansion joint, characterized in that: The system includes a telescopic panel, a stainless steel dustproof sliding plate, a fixed panel, a telescopic displacement box assembly, and a water-stopping system. The telescopic panel has a wavy strip structure and multiple panels are arranged side by side. All the telescopic panels are movably connected by telescopic chains. The two outer telescopic panels are fixedly connected to both ends of the bridge expansion joint. The telescopic displacement box assembly is located between the bridge expansion joints below the telescopic panels. The water-stopping system is located below the telescopic displacement box assembly. The fixed panel is located on top of the telescopic displacement box assembly. The stainless steel dustproof sliding plate is located at the bottom of the telescopic panel and is slidably connected to the fixed panel.

2. The water ripple bridge expansion joint according to claim 1, characterized in that: The water-stopping system is made of stainless steel.

3. The water ripple bridge expansion joint according to claim 2, characterized in that: The water-stopping system includes two bearing plates disposed at both ends of the bridge expansion joint and a seepage-proof water-stopping plate disposed between the two bearing plates. The seepage-proof water-stopping plate is a downwardly curved arc structure. The bearing plates and the seepage-proof water-stopping plate are fastened together by fixing bolts.

4. The water ripple bridge expansion joint according to claim 3, characterized in that: Both of the bearing plates are vertically arranged, and the two ends of the seepage-proof and water-stopping plate are respectively attached to the inner sides of the two bearing plates.

5. The water ripple bridge expansion joint according to claim 4, characterized in that: The bearing plate is provided with anchoring steel bars.

6. The water ripple bridge expansion joint according to claim 1, characterized in that: The surface of the telescopic panel is sequentially treated with sandblasting to remove rust, spraying primer, and spraying topcoat.

7. The water ripple bridge expansion joint according to claim 1, characterized in that: A stainless steel dustproof sliding plate is provided between each pair of adjacent telescopic panels.

8. The water ripple bridge expansion joint according to claim 1, characterized in that: The expansion joint assembly includes two displacement boxes disposed at both ends of the bridge expansion joint and a support beam slidably disposed between the two displacement boxes.

9. A water ripple bridge expansion joint according to claim 8, characterized in that: The fixed panel is mounted on top of the support beam via a bracket.

10. A water ripple bridge expansion joint according to claim 1, characterized in that: The telescopic chain is a parallelogram telescopic mechanism.

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