Integral anchoring guide rail type bridge seamless expansion device

Abstract

The utility model belongs to the technical field of bridge engineering, and particularly relates to an integral anchoring guide rail type bridge seamless expansion device, which comprises a fixed end component, a fixed end component and a fixed end component, the sliding end assembly is fixedly arranged at the other end in the bridge parting, and the sliding end assembly is in sliding connection with the fixed end assembly; the liquid waterstop is arranged between the top end of the fixed end assembly and the top end of the sliding end assembly; and the rubber water stop assembly is arranged in the bridge parting seam and located between the bottom end of the fixed end assembly and the bottom end of the sliding end assembly. A guide rail type telescopic structure is adopted, the requirement for telescopic deformation of the bridge is met, meanwhile, a continuous seamless road surface is formed, and the bridge water stop structure has the advantages of being smooth in vehicle running, low in noise, good in water stop effect, good in durability and the like and is particularly suitable for urban bridges and bridges high in noise control requirement.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, and in particular relates to a seamless expansion joint device for bridges with integral anchored guide rails. Background Technology

[0002] Because bridges are subject to longitudinal expansion and contraction due to factors such as temperature changes and loads, expansion joints are usually installed between beams or between beams and abutments at bridge joints to prevent damage to the bridge structure caused by excessive stress, ensure the continuous and flat bridge deck for vehicle passage, and prevent rainwater from seeping in and polluting the substructure.

[0003] Currently, the commonly used expansion joints in bridge engineering are mainly modular steel expansion joints and comb-tooth plate expansion joints. Both of these types of expansion joints have certain problems in use.

[0004] Modular steel expansion joints mainly consist of steel beams installed on both sides of the joint and a water-stop rubber strip connecting them in the middle. When the expansion and contraction is large, a central beam is installed in the middle of the joint. This type of expansion joint has the following problems:

[0005] (1) The noise is quite loud when vehicles pass by. There are many complaints from surrounding residents when the bridge is used in the city. The main reason is that there are gaps between the steel beams that run horizontally along the bridge. The gaps are perpendicular to the direction of traffic. When vehicles pass by, the wheels will deform and impact the steel beams, resulting in a lot of noise.

[0006] (2) The cross-section of the steel beams of this type of expansion joint is mostly C-shaped, and the steel plate of the beam is in a cantilever state with low stiffness. Under the frequent impact of vehicles, it is easy to warp and deform or even break and fall off, affecting the normal use function and durability of the expansion joint, and aggravating the noise when vehicles pass by.

[0007] (3) The water-stopping effect of this type of expansion joint is achieved only by the water-stopping rubber strip suspended between the steel beams. However, the rubber strip is thin and is easily damaged under the direct action of steel beam deformation, vehicle impact, and road debris puncture. It has poor durability and often results in rainwater seeping into the bridge deck and polluting the bridge piers and abutments.

[0008] Comb-plate expansion joints typically consist of comb-shaped steel plates, stainless steel sliding plates, neoprene rubber plates, and anchor bolts. The surface plate is a comb-shaped anti-slip grooved steel plate that extends from the left and right sides of the bridge gap and interlocks with each other, achieving expansion and contraction through the front and rear opening and closing of the plates. A stainless steel sliding plate and rubber sealing strip are installed below the panel to form a waterproof and dustproof system. This type of expansion joint has no transversely continuous gaps; the plates overlap, resulting in smoother driving compared to modular steel expansion joints. However, the following problems still exist:

[0009] (1) There are gaps between the toothed plates that are in the same direction of road travel, which still causes wheel impact noise. In addition, there have been many cases of bicycle wheels getting stuck in the gaps during urban use, causing bicycles to overturn and people to be injured, which poses a safety hazard.

[0010] (2) The toothed plate lacks vertical limiting measures. Under long-term impact from the vehicle, it will deform upward, reduce driving comfort, increase impact noise, and pose a safety hazard to passing vehicles.

[0011] (3) The panel is bolted and assembled. Under vehicle load vibration, the bolts are easy to loosen and fall off, causing the comb plate to shift and fall off, which affects the use function, safety and durability.

[0012] (4) Mud and sand debris can easily enter the expansion joint through the gap between the toothed plates, causing poor expansion or damage to the components, and it is not easy to clean.

[0013] In summary, the modular steel expansion joints and comb-plate expansion joints commonly used in bridges currently suffer from problems such as noise pollution, easy deformation of steel plates, poor water sealing, and poor durability. This is mainly due to the basic structural forms of these two types of expansion joints. Their expansion joints have obvious gaps on the surface, weak overall structural integrity, and low stiffness of the expansion steel plates bearing vehicle loads, resulting in separation and a lack of effective restraint and support. Furthermore, although seamless expansion joints using elastomers to fill the gaps between beams have emerged, the elastomer is only supported by a thin pad, lacking strong vertical restraint. Under direct vehicle loads, they are prone to significant deformation, affecting durability and comfort, and are currently mainly used in pedestrian bridges.

[0014] Therefore, it is necessary to design a seamless expansion joint for bridges with integral anchored guide rails to solve the above problems. Utility Model Content

[0015] The purpose of this utility model is to provide an integrally anchored guide rail type seamless bridge expansion joint. It adopts a guide rail type expansion structure, which can meet the requirements of bridge expansion and deformation while forming a continuous and seamless road surface. It has the characteristics of smooth vehicle driving, low noise, good water-stopping effect and good durability. It is particularly suitable for urban bridges and bridges with high noise control requirements.

[0016] To achieve the above objectives, this utility model provides the following solution: a seamless expansion joint for bridges with integral anchored guide rails, comprising...

[0017] The fixed end assembly is fixedly installed at one end inside the bridge joint.

[0018] A sliding end assembly is fixedly installed at the other end of the bridge joint, and the sliding end assembly is slidably connected to the fixed end assembly;

[0019] A liquid waterstop is disposed between the top end of the fixed end assembly and the top end of the sliding end assembly;

[0020] A rubber waterstop assembly is installed inside the bridge joint, and the rubber waterstop assembly is located between the bottom end of the fixed end assembly and the bottom end of the sliding end assembly.

[0021] According to this utility model, a seamless expansion joint for an integrally anchored guide rail type bridge includes a fixed end assembly comprising a base plate, a fixed end back plate fixedly connected to one end of the base plate, and a plurality of first anchor plates fixedly connected to the fixed end back plate. The plurality of first anchor plates are equally spaced and located below the base plate, and a first U-shaped anchor bar is fixedly connected to each first anchor plate. A plurality of first sliding connection components are provided at the top of the base plate, and the first sliding connection components correspond one-to-one with the first anchor plates. The sliding end assembly is slidably connected to the base plate through the plurality of first sliding connection components.

[0022] According to the present invention, a seamless expansion joint for an integrally anchored guide rail type bridge is provided. The first sliding connection component includes a bayonet, which is fixedly connected to one end of the top of the base plate. The bayonet is away from the fixed end back plate. Each bayonet is provided with a stainless steel slide bar, which is fixedly connected to the top of the base plate.

[0023] According to this utility model, a seamless expansion joint for an integrally anchored guide rail type bridge includes a sliding end assembly comprising a top plate. A sealing plate is fixedly connected to one end of the top plate near the fixed end back plate. A sliding end back plate is fixedly connected to the bottom end of the top plate away from the sealing plate. A plurality of second anchor plates are fixedly connected to the side wall of the sliding end back plate away from the sealing plate. The plurality of second anchor plates are equally spaced. Each second anchor plate is fixedly connected to a second U-shaped anchor bar. A plurality of second sliding connection assemblies are fixedly connected to the bottom end of the top plate. The second sliding connection assemblies are located between the sliding end back plate and the sealing plate. The second sliding connection assemblies correspond one-to-one with the second anchor plates and are slidably connected to the bayonet slots.

[0024] According to the present invention, a seamless expansion joint for an integrally anchored guide rail type bridge is provided, wherein the second sliding connection component includes a support pier, the support pier is slidably disposed in the bayonet, and the bottom end of the support pier is in sliding contact with the top end of the stainless steel sliding strip.

[0025] According to this utility model, a seamless expansion joint for bridges with integral anchored guide rails is provided. The rubber waterstop component includes two angle steels, which are respectively fixedly embedded in the two side walls of the bridge joint. Both angle steels are located between the base plate and the sliding end back plate. A waterstop rubber strip is fixedly connected between the two angle steels.

[0026] According to this utility model, a seamless expansion joint for an integrally anchored guide rail type bridge is provided, wherein the liquid waterstop is located at the top of the base plate and between the fixed end back plate and the sealing plate.

[0027] According to this utility model, a seamless expansion joint for bridges with integral anchored guide rails is provided. The fixed end component and the sliding end component are both fixed in the bridge joint by pre-embedded steel bars. The pre-embedded steel bars are fixed at the top of the bridge abutment, and steel fiber micro-expansion concrete is poured on the outside of the pre-embedded steel bars.

[0028] Compared with the prior art, the present invention has the following advantages and technical effects:

[0029] (1) Smooth driving and low noise. After installation, the expansion joint is flat and continuous with the road surface, making the vehicle ride smooth and comfortable. It effectively eliminates the impact noise when the wheels pass through the expansion joint and has little impact on the surrounding environment.

[0030] (2) High structural stiffness and strong resistance to deformation. The piers provide stiffening ribs and support to the top slab, significantly enhancing its resistance to deformation and reducing slab deformation under direct vehicle pressure. The clamping action also prevents vertical tilting and lateral twisting of the sliding end assembly. Furthermore, the placement of second and first anchor plates at the piers and clamping points enhances the stiffness of the sliding end back plate, fixed end back plate, and bottom plate, facilitating the diffusion of road vehicle loads into the bridge beam and effectively controlling the deformation of the expansion joint.

[0031] (3) Strong water-stopping ability. After the expansion joint is installed, the road surface is flat and tight. Three measures, namely "liquid water-stopping strip - sealing plate - water-stopping rubber strip", are set in the rainwater leakage path inside the joint, which has a strong water-stopping ability and effectively prevents rainwater from seeping down the bridge deck and polluting the piers.

[0032] (4) Excellent durability. The expansion joint adopts an integral welded structure and is directly anchored to the bridge beam, ensuring it will not detach under long-term vehicle loads. The expansion joint is designed with a clear force transmission path, high rigidity of the load-bearing components, strong resistance to deformation, and good overall integrity, specifically enhancing its durability and smoothness under long-term vehicle loads. In addition, after installation, the exposed parts on the road surface are flat and tight, and the liquid waterstop and sealing plate prevent rainwater and sand and gravel from entering the expansion joint, ensuring the cleanliness and stability of the internal components and smooth expansion and contraction. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the installation of this utility model;

[0035] Figure 2 This is an installation plan view of the present invention;

[0036] Figure 3 Overall side view of this utility model;

[0037] Figure 4 for Figure 3 Sectional view of AA;

[0038] Figure 5 This is a structural plan view of the present utility model;

[0039] Figure 6 This is a side view of the fixed end assembly of this utility model;

[0040] Figure 7 for Figure 6 BB section view;

[0041] Figure 8 This is a top view of the fixed end assembly of this utility model;

[0042] Figure 9 This is a side view of the sliding end assembly of this utility model;

[0043] Figure 10 for Figure 9 CC section view;

[0044] Figure 11 This is a top view of the sliding end assembly of this utility model.

[0045] The components include: 1. Fixed end assembly; 2. Sliding end assembly; 3. Liquid waterstop; 5. Abutment; 6. Embedded steel bars; 7. Steel fiber micro-expansion concrete; 8. Road pavement layer; 11. Base plate; 12. Buckle; 13. Fixed end back plate; 14. Stainless steel sliding strip; 15. First anchor plate; 16. First U-shaped anchor bar; 21. Top plate; 22. Support; 23. Sliding end back plate; 24. Sealing plate; 25. Second anchor plate; 26. Second U-shaped anchor bar; 41. Waterstop rubber strip; 42. Angle steel. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Reference Figures 1 to 11 As shown, this utility model provides an integrally anchored guide rail type seamless expansion joint for bridges, including...

[0049] Fixed end component 1 is fixedly installed at one end inside the bridge joint;

[0050] Sliding end component 2 is fixedly installed at the other end of the bridge joint, and sliding end component 2 is slidably connected to fixed end component 1;

[0051] Liquid waterstop 3 is installed between the top of the fixed end component 1 and the top of the sliding end component 2;

[0052] The rubber waterstop component is installed inside the bridge joint, and is located between the bottom end of the fixed end component 1 and the bottom end of the sliding end component 2.

[0053] Fixed end assembly 1 and sliding end assembly 2 are installed longitudinally along the road on both sides of the bridge joint, and the entire expansion joint is arranged transversely along the entire length of the bridge.

[0054] The liquid waterstop 3 uses a polyether-modified silicone resin hybrid, which is injected into the U-shaped groove of the expansion joint on the bridge deck. After curing for a certain period of time, it forms an elastic-plastic colloid that can expand and deform with the beam. It has strong adhesion to steel and can prevent rainwater and gravel from entering the expansion joint. At the same time, the surrounding steel plates provide rigid restraint for the waterstop, effectively reducing vertical deformation under vehicle loads and ensuring road surface smoothness. In addition, this waterstop is easy to replace, and traffic can be opened two hours after pouring, making subsequent maintenance convenient.

[0055] Furthermore, the fixed end assembly 1 includes a base plate 11, a fixed end back plate 13 is fixedly connected to one end of the base plate 11, and a plurality of first anchor plates 15 are fixedly connected to the fixed end back plate 13. The plurality of first anchor plates 15 are equally spaced and located below the base plate 11. A first U-shaped anchor bar 16 is fixedly connected to each first anchor plate 15. A plurality of first sliding connection components are provided at the top of the base plate 11. The first sliding connection components correspond one-to-one with the first anchor plates 15. The sliding end assembly 2 is slidably connected to the base plate 11 through the plurality of first sliding connection components.

[0056] Furthermore, the first sliding connection assembly includes a bayonet 12, which is fixedly connected to one top end of the base plate 11. The bayonet 12 is away from the fixed end back plate 13. Each bayonet 12 is provided with a stainless steel slide bar 14, which is fixedly connected to the top end of the base plate 11.

[0057] Furthermore, the sliding end assembly 2 includes a top plate 21. A sealing plate 24 is fixedly connected to one end of the top plate 21 near the fixed end back plate 13. A sliding end back plate 23 is fixedly connected to the bottom end of the top plate 21 away from the sealing plate 24. A plurality of second anchor plates 25 are fixedly connected to the side wall of the sliding end back plate 23 away from the sealing plate 24. The plurality of second anchor plates 25 are equally spaced. Each second anchor plate 25 is fixedly connected to a second U-shaped anchor bar 26. A plurality of second sliding connection assemblies are fixedly connected to the bottom end of the top plate 21. The second sliding connection assemblies are located between the sliding end back plate 23 and the sealing plate 24. The second sliding connection assemblies correspond one-to-one with the second anchor plates 25 and correspond one-to-one with the bayonet 12 and are slidably connected.

[0058] Furthermore, the second sliding connection assembly includes a support 22, which is slidably disposed within the bayonet 12, with the bottom end of the support 22 in sliding contact with the top end of the stainless steel slide bar 14.

[0059] Furthermore, the rubber waterstop component includes two angle steels 42, which are respectively fixedly embedded in the two side walls of the bridge joint. Both angle steels 42 are located between the base plate 11 and the sliding end back plate 23, and a waterstop rubber strip 41 is fixedly connected between the two angle steels 42.

[0060] Furthermore, the liquid waterstop 3 is located at the top of the base plate 11 and between the fixed end back plate 13 and the sealing plate 24.

[0061] Furthermore, both the fixed end assembly 1 and the sliding end assembly 2 are fixed in the bridge joint by pre-embedded steel bars 6. The pre-embedded steel bars 6 are fixed to the top of the abutment 5 or the beam body, and steel fiber micro-expansion concrete 7 is poured on the outside of the pre-embedded steel bars 6.

[0062] A road paving layer 8 is installed at the top of the bridge abutment 5. The road paving layer 8 is located outside the steel fiber micro-expansion concrete 7 of the bridge joint.

[0063] The working principle of this utility model is as follows:

[0064] The support 22 of the sliding end assembly 2 is inserted into the bayonet 12 of the fixed end assembly 1, and slides back and forth on the guide rail formed by the stainless steel slide bar 14 and the bayonet 12 to achieve expansion and contraction. The width of the U-shaped groove between the front end of the support 22 and the back plate 13 of the fixed end can be determined according to the amount of bridge expansion and contraction, and the lengths of the top plate 21, the support 22 and the bottom plate 11 are adjusted accordingly. After the support 22 is inserted into place, the sealing plate 24 is installed at the front end to seal the gap between the top plate 21 and the bottom plate 11 tightly, forming a closed U-shaped groove. The sliding end assembly 2 and the fixed end assembly 1 are integrally anchored to the beam body on both sides of the bridge gap by the first anchor plate 15, the second anchor plate 25, the first U-shaped anchor bar 16 and the second U-shaped anchor bar 26, and a water-stop rubber strip 41 is installed below. After the concrete of the beam is poured, the U-shaped groove between the fixed end component 1 and the sliding end component 2 is filled with liquid waterstop 3 to make it dense, thus completing the installation. Finally, the top surface of the top plate 21, the top surface of the fixed end back plate 13, and the top surface of the liquid waterstop 3 are flat and continuous with the road surface.

[0065] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0066] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements to the technical solutions of the present utility model made by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A seamless expansion joint for bridges with integral anchored guide rails, characterized in that, include Fixed end assembly (1) is fixedly installed at one end of the bridge joint; The sliding end assembly (2) is fixedly installed at the other end of the bridge joint, and the sliding end assembly (2) is slidably connected to the fixed end assembly (1); A liquid waterstop (3) is disposed between the top end of the fixed end assembly (1) and the top end of the sliding end assembly (2); A rubber waterstop assembly is installed inside the bridge joint, and the rubber waterstop assembly is located between the bottom end of the fixed end assembly (1) and the bottom end of the sliding end assembly (2).

2. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 1, characterized in that, The fixed end assembly (1) includes a base plate (11), one end of which is fixedly connected to a fixed end back plate (13). The fixed end back plate (13) is fixedly connected to a plurality of first anchor plates (15). The plurality of first anchor plates (15) are equally spaced and located below the base plate (11). Each first anchor plate (15) is fixedly connected to a first U-shaped anchor bar (16). The top of the base plate (11) is provided with a plurality of first sliding connection components. The first sliding connection components correspond one-to-one with the first anchor plates (15). The sliding end assembly (2) is slidably connected to the base plate (11) through the plurality of first sliding connection components.

3. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 2, characterized in that, The first sliding connection assembly includes a bayonet (12), which is fixedly connected to one end of the top of the base plate (11). The bayonet (12) is away from the fixed end back plate (13). Each bayonet (12) is provided with a stainless steel slide (14), which is fixedly connected to the top of the base plate (11).

4. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 3, characterized in that, The sliding end assembly (2) includes a top plate (21). A sealing plate (24) is fixedly connected to one end of the top plate (21) near the fixed end back plate (13). A sliding end back plate (23) is fixedly connected to the bottom end of the top plate (21) away from the sealing plate (24). A plurality of second anchor plates (25) are fixedly connected to the side wall of the sliding end back plate (23) away from the sealing plate (24). The plurality of second anchor plates (25) are equally spaced. Each second anchor plate (25) is fixedly connected to a second U-shaped anchor bar (26). A plurality of second sliding connection components are fixedly connected to the bottom end of the top plate (21). The second sliding connection components are located between the sliding end back plate (23) and the sealing plate (24). The second sliding connection components correspond one-to-one with the second anchor plates (25). The second sliding connection components correspond one-to-one with the bayonet (12) and are slidably connected.

5. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 4, characterized in that, The second sliding connection assembly includes a support (22), which is slidably disposed in the bayonet (12), and the bottom end of the support (22) is in sliding contact with the top end of the stainless steel slide bar (14).

6. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 4, characterized in that, The rubber waterstop assembly includes two angle steels (42), which are fixedly embedded in the two side walls of the bridge joint. Both angle steels (42) are located between the base plate (11) and the sliding end back plate (23). A waterstop rubber strip (41) is fixedly connected between the two angle steels (42).

7. A seamless expansion joint for bridges with integral anchored guide rails according to claim 4, characterized in that, The liquid waterstop (3) is located at the top of the base plate (11) and between the fixed end back plate (13) and the sealing plate (24).

8. The seamless expansion joint of an integrally anchored guide rail type bridge according to claim 1, characterized in that, Both the fixed end assembly (1) and the sliding end assembly (2) are fixed in the bridge joint by pre-embedded steel bars (6). The pre-embedded steel bars (6) are fixed at the top of the bridge abutment (5). Steel fiber micro-expansion concrete (7) is poured on the outside of the pre-embedded steel bars (6).

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