A multi-level waterproof expansion joint between bridge decks with flexible replacement

Abstract

This utility model relates to the field of bridge construction, and in particular to a bridge deck expansion joint with a multi-level waterproof strip that can be flexibly replaced. It includes a pair of F-shaped steel beams, which are mirrored in shape. Multiple anchor bars are fixedly connected to the outer sides of each pair of F-shaped steel beams. A drainage pipe is provided below each pair of F-shaped steel beams. The cavity of each pair of F-shaped steel beams is provided with a water-stop unit that provides multiple layers of protection. Furthermore, both ends of each pair of F-shaped steel beams are connected to guide units that facilitate the maintenance and replacement of the water-stop unit. The advantages are that the multi-level water-stop unit provides multiple layers of protection, effectively improving the fault tolerance rate. The guide units also facilitate the maintenance and replacement of the water-stop unit, effectively improving the efficiency of maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to a bridge deck expansion joint with a flexible, multi-level waterproof strip. Background Technology

[0002] Bridge expansion joints are gaps reserved in bridge structures, mainly used to cope with the natural expansion and contraction deformation of bridges caused by factors such as temperature changes, material shrinkage, vehicle loads, or foundation settlement. The existence of these gaps can effectively release the stress generated by external forces in various parts of the bridge, and avoid structural cracking, deformation, or even damage caused by compression or tension. In expansion joints, a key component called a waterstop is usually installed. Its core function is to seal the gaps and prevent rainwater, snowmelt, or other liquids from seeping into the internal structure of the bridge, thereby protecting key parts such as piers, supports, and beams from corrosion.

[0003] Waterstops are exposed to the external environment for extended periods, subjected to high temperatures in summer and low temperatures in winter. This accelerates material aging, causing the rubber to harden, become brittle, and even crack, losing its original elasticity and sealing properties. Secondly, bridges bear dynamic loads from daily vehicle traffic, especially the severe vibrations and impacts from heavy vehicles. Over time, this causes mechanical wear, leading to joint detachment or localized tearing. Once the waterstop fails, moisture can seep into the bridge's interior through the gaps, causing problems such as steel corrosion, concrete spalling, and bearing seizure. In severe cases, this can threaten the overall stability and safety of the bridge. Therefore, regularly inspecting and promptly replacing aging or damaged waterstops is an important maintenance measure to maintain the bridge's waterproof performance, extend its service life, and avoid high repair costs. Utility Model Content

[0004] In response to the above situation, this utility model provides a bridge expansion joint with a multi-level waterproof strip that can be flexibly replaced: it is equipped with a multi-level waterproof unit, and the multiple layers of protection of the waterproof unit can still prevent water from entering the bridge gap even if a single part is damaged. It is also equipped with a guide unit to facilitate the replacement of the waterproof unit components, which can effectively improve the efficiency of maintenance and replacement and enhance the user experience.

[0005] This utility model discloses a bridge deck expansion joint with a multi-level waterproof strip that can be flexibly replaced. It includes a pair of F-shaped steels, which are mirrored. Multiple anchor bars are fixedly connected to the outer side of each pair of F-shaped steels. A drainage pipe is provided below the pair of F-shaped steels. A water-stop unit with multiple protections is provided in the cavity of the pair of F-shaped steels. Furthermore, guide units that facilitate the maintenance and replacement of the water-stop unit are connected to both ends of the pair of F-shaped steels.

[0006] The beneficial effects of the above technical solution are as follows:

[0007] (1) This utility model can provide multiple protections by setting up a multi-level waterproof unit. In the event of damage to the first waterstop, the second waterstop can take over the waterproofing, thus saving time for maintenance and preventing water from directly entering the bridge and damaging the bridge in the event of damage to the first waterstop.

[0008] (2) This utility model facilitates the maintenance and replacement of the second waterstop and water collection trough by setting a guide unit. The guide unit can guide the movement of the second waterstop and water collection trough in the F-shaped steel when the user's field of vision is limited, thereby facilitating the user to install and replace the second waterstop and water collection trough. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a bridge deck expansion joint structure with a flexible, multi-level waterproof strip according to the present invention.

[0010] Figure 2 This is an enlarged schematic diagram of the structure of a bridge expansion joint A with a flexible, multi-level waterproof strip that can be flexibly replaced according to the present invention.

[0011] Figure 3 This is a front view of a bridge deck expansion joint with a flexible, multi-level waterproof strip, according to the present invention.

[0012] Figure 4 This is an enlarged schematic diagram of the structure of the bridge deck expansion joint B with a flexible replacement multi-level waterproof tape according to this utility model.

[0013] Figure 5 This is a schematic diagram of a bridge deck expansion joint guide unit structure with a flexible replacement multi-level waterproof tape according to the present invention.

[0014] Figure 6 This is a schematic diagram of a bridge deck expansion joint guide rail structure with a flexible replacement multi-level waterproof belt according to the present invention.

[0015] Figure 7 This is an enlarged schematic diagram of the structure at point C of the bridge deck expansion joint, which is a multi-level waterproof strip that can be flexibly replaced.

[0016] The following are the labels in the diagram: 1. F-shaped steel; 12. Anchor bar; 13. Drainage pipe; 2. Water-stop unit; 21. First water-stop strip; 22. Pressing strip; 23. Second water-stop strip; 24. Limiting steel; 25. Water collection trough; 26. Guide column; 3. Guide unit; 31. Slide rail; 32. First outlet; 33. Second outlet; 34. Moving block; 35. Slide groove; 36. Connecting column; 37. Sliding block; 38. Sliding column; 39. Limiting plate; 310. Spring; 311. Control block; 312. Control rope; 313. Hook. Detailed Implementation

[0017] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 7 As will be clearly shown in the detailed description of the embodiments, all structural contents mentioned in the following embodiments are based on the accompanying drawings.

[0018] like Figure 1 The bridge deck expansion joint shown is a multi-level waterproof strip with flexible replacement, including a pair of F-shaped steel 1, the pair of F-shaped steel 1 are mirrored, multiple anchor bars 12 are fixedly connected to the outer side of the pair of F-shaped steel 1, a drainage pipe 13 is provided below the pair of F-shaped steel 1, a water-stop unit 2 with multiple protection is provided in the cavity of the pair of F-shaped steel 1, and guide units 3 are connected to both ends of the pair of F-shaped steel 1 to facilitate the maintenance and replacement of the water-stop unit 2.

[0019] In practice, the anchor bar 12 is simply installed between the bridge decks so that a pair of F-shaped steel bars 1 are mirrored. At this time, the water-stop unit 2 can be installed through the guide unit 3. The multi-level setting of the water-stop unit 2 ensures that after the first water-stop 21 is damaged, the second water-stop 23 can take over the work of the first water-stop 21, thus preventing water from directly entering the bridge after the first water-stop 21 is damaged.

[0020] like Figure 1 and Figure 2 The water-stop unit 2 shown includes a first water-stop strip 21, which is placed in the upper cavity of a pair of F-shaped steels 1. A clamping strip 22 integrally formed with the first water-stop strip 21 is provided at its top. The first water-stop strip 21 is secured in the upper cavity of the F-shaped steels 1 by the clamping strip 22. A second water-stop strip 23 is provided in the lower cavity of the pair of F-shaped steels 1. The end of the second water-stop strip 23 away from the F-shaped steels 1 contacts a limiting steel 24. The limiting steel 24 is welded... The limiting steel 24 is attached to the surface of the F-shaped steel 1 and can form a groove structure with the lower cavity of the F-shaped steel 1. The second water stop 23 is placed in the groove formed by the limiting steel 24 and the lower cavity of the F-shaped steel 1. A water collection trough 25 is hung at the bottom of the limiting steel 24. Guide posts 26 are fixedly connected to both ends of the second water stop 23 and the water collection trough 25. Drain pipes 13 are provided below both ends of the water collection trough 25. The drain pipes 13 can catch the water flowing out from both ends of the water collection trough 25 and then discharge it in a concentrated manner.

[0021] In practice, because the first waterstop 21 is close to the top, it can be easily installed without the help of the guide unit 3. When installing the first waterstop 21, simply place the first waterstop 21 into the upper cavity of the F-shaped steel 1, and then insert the clamping strip 22 into the gap between the first waterstop 21 and the upper cavity of the F-shaped steel 1. The elasticity of the material of the clamping strip 22 is used to limit the first waterstop 21, thereby completing the installation. Disassembly is also easy; simply use a tool to hook out the clamping strip 22 and then the first waterstop 21 can be easily removed. However, because the second waterstop 23 and the water collection groove 25 are far from the top of the F-shaped steel 1, the user's field of vision is limited during installation, making it inconvenient to align them with the lower cavity of the F-shaped steel 1, and the installation is more inconvenient. In this case, the user can use the guide unit 3 to assist in the installation of the second waterstop 23 and the water collection groove 25.

[0022] like Figure 1 , 2 Guide unit 3, as shown in figures 3, 4, 5, 6, and 7, includes a slide rail 31. A first outlet 32 ​​and a second outlet 33, integrally formed with the slide rail 31, are respectively provided on one side of the slide rail 31. The first outlet 32 ​​and the second outlet 33 form an inverted F-shape with the slide rail 31. A movable block 34 capable of changing track is provided at the connection between the first outlet 32 ​​and the slide rail 31. A groove 35 is provided on the slide rail 31 near the movable block 34. A connecting post 36 is slidably installed in the groove 35, and one end of the connecting post 36 is fixedly connected to the movable block 34. The other end is fixedly connected to a slider 37. A through hole is opened in the middle of the slider 37. A sliding column 38 is slidably connected in the through hole. A limit plate 39 is fixedly connected to one end of the sliding column 38. A spring 310 is sleeved on the surface of the sliding column 38. One end of the spring 310 contacts the slider 37, and the other end contacts the limit plate 39. A control unit is provided above the slider 37 to control the slider 37 to slide on the sliding column 38. The control unit can drive the moving block 34 to move in the slide rail 31 by controlling the slider 37 to slide, thereby realizing the track change.

[0023] In practical implementation, simply place the guide posts 26 at both ends of the second waterstop 23 into the slide rail 31. At this time, the guide posts 26 will drive the two ends of the second waterstop 23 to move along the guide of the slide rail 31. The guide posts 26 will contact the moving block 34 in the slide rail 31 and then slide along the moving block 34 into the first outlet 32, thus falling into the groove formed by the limiting steel 24 and the lower chamber of the F-shaped steel 1, thereby completing the installation. This facilitates subsequent reinforcement by the user and avoids the user being unable to place the waterstop into the groove formed by the limiting steel 24 and the lower chamber of the F-shaped steel 1 due to limited vision.

[0024] like Figure 5The control unit shown includes a control block 311, which is fixedly installed on the top of the slider 37. One end of the control block 311 is fixedly connected to a control rope 312. The control rope 312 passes through the limit plate 39 and is fixedly connected to a hook 313. The hook 313 is located at the entrance of the slide rail 31.

[0025] In practice, to install the water collection trough 25, simply use a hook or other tool to pull the hook 313. The movement of the hook 313 will move the control rope 312, which in turn will pull the control block 311. The movement of the control block 311 will move the slider 37 on the surface of the sliding column 38 and compress the spring 310. The movement of the slider 37 will move the connecting column 36, which in turn will move the moving block 34 within the slide rail 31. The movement of the moving block 34 will block the first outlet 32 ​​and open the second outlet 33. At this time, the guide column 26 sliding within the slide rail 31 will slide along the slide rail 31 toward the second outlet 33, thereby causing the water collection trough 25 to fall into the groove at the bottom of the limiting steel 24, thus completing the installation.

[0026] In practical use, after mirror-mounting a pair of F-shaped steel sections 1 using anchor bars 12, hooks 313 are moved by pulling with tools such as hooks. The movement of hooks 313 causes control ropes 312 to move, which in turn pulls control blocks 311. The movement of control blocks 311 causes sliders 37 to move on the surface of sliding posts 38 and compress springs 310. The movement of sliders 37 causes connecting posts 36 to move, which in turn causes moving blocks 34 to move within slide rails 31, thus achieving the track-changing function. The movement of moving blocks 34 will block the first... The first outlet 32 ​​is opened and the second outlet 33 is opened. At this time, the guide column 26 of the water collection trough 25 is placed into the slide rail 31. The guide column 26 will slide along the slide rail 31 towards the second outlet 33, thereby causing the water collection trough 25 to fall into the groove at the bottom of the limiting steel 24, thus completing the installation. After the user installs the water collection trough 25, the hook 313 is released and the spring 310 will return to its original position, thereby pushing the moving block 34 to return to its original position, thus reopening the first outlet 32 ​​and blocking the second outlet 33, which facilitates the subsequent installation of the second water stop 23. The installation of the second water stop 23 only requires first opening the second water stop 23. One end of the water hose 23 is connected to a guide post 26, which is placed into the slide rail 31. At this time, the guide post 26 will drive one end of the second waterstop 23 to move along the guide of the slide rail 31. The guide post 26 will contact the moving block 34 in the slide rail 31 and then slide along the moving block 34 into the first outlet 32, thus falling into the groove formed by the limiting steel 24 and the lower cavity of the F-shaped steel 1, thereby completing the positioning and facilitating the user to complete the installation. Finally, the first waterstop 21 is placed into the upper cavity of the F-shaped steel 1, and then the clamping strip 22 is inserted into the upper cavity of the first waterstop 21 and the F-shaped steel 1. The first waterstop 21 is installed by using the elasticity of the material of the clamping strip 22 to insert it into the upper cavity of the F-shaped steel 1. When the first waterstop 21 needs to be removed, the clamping strip 22 can be hooked out first by using a hook or other tool, and the first waterstop 21 can be removed at the same time. As for the removal of the second waterstop 23, a bent hook or other equipment can be used to insert into the second waterstop 23, and then lifted upward to move the second waterstop 23 upward, thereby making the second waterstop 23 leave the groove and complete the removal. The removal of the water collection groove 25 is the same as that of the second waterstop 23.

Claims

1. A bridge deck expansion joint with a multi-level waterproof strip that can be flexibly replaced, comprising a pair of F-shaped steels (1), the pair of F-shaped steels (1) being mirror-shaped, each pair of F-shaped steels (1) having multiple anchor bars (12) fixedly connected to its outer side, and a drainage pipe (13) provided below the pair of F-shaped steels (1), characterized in that: The cavity of a pair of F-shaped steel (1) is provided with a water-stopping unit (2) that can provide multiple protections, and both ends of the pair of F-shaped steel (1) are connected to a guide unit (3) that facilitates the maintenance and replacement of the water-stopping unit (2).

2. The bridge deck expansion joint with flexibly replaceable multi-level waterproof strip as described in claim 1, characterized in that: The water-stop unit (2) includes a first water-stop strip (21), which is placed in the upper cavity of a pair of F-shaped steels (1). The top of the first water-stop strip (21) is provided with a clamping strip (22) integrally formed with the first water-stop strip (21). The first water-stop strip (21) is clamped in the upper cavity of the F-shaped steels (1) by the clamping strip (22). A second water-stop strip (23) is provided in the lower cavity of the pair of F-shaped steels (1). The end of the second water-stop strip (23) away from the F-shaped steels (1) is in contact with the inner cavity. There is a limiting steel (24), which is welded to the surface of the F-shaped steel (1). The limiting steel (24) can form a groove structure with the lower chamber in the F-shaped steel (1). The second water stop (23) is placed in the groove formed by the limiting steel (24) and the lower chamber of the F-shaped steel (1). A water collection trough (25) is hung at the bottom of the limiting steel (24). Guide columns (26) are fixedly connected to both ends of the second water stop (23) and the water collection trough (25). Drainage pipes (13) are provided below both ends of the water collection trough (25).

3. A bridge deck expansion joint with flexibly replaceable multi-level waterproof strips according to claim 1 or 2, characterized in that: The guide unit (3) includes a slide rail (31). A first outlet (32) and a second outlet (33) integrally formed with the slide rail (31) are respectively provided on one side of the slide rail (31). The first outlet (32) and the second outlet (33) form an inverted F-shape with the slide rail (31). A movable block (34) capable of changing track is provided at the connection between the first outlet (32) and the slide rail (31). A groove (35) is provided on the slide rail (31) near the movable block (34). A connecting column (36) is slidably installed in the groove (35). The movable block (34) is fixedly connected to one end of the connecting column (36), and the other end... A slider (37) is fixedly connected. A through hole is opened in the middle of the slider (37). A sliding column (38) is slidably connected in the through hole. A limit plate (39) is fixedly connected to one end of the sliding column (38). A spring (310) is sleeved on the surface of the sliding column (38). One end of the spring (310) contacts the slider (37), and the other end contacts the limit plate (39). A control unit is provided above the slider (37) to control the slider (37) to slide on the sliding column (38). The control unit can drive the moving block (34) to move in the slide rail (31) by controlling the slider (37) to slide, thereby realizing the track change.

4. The bridge deck expansion joint with flexibly replaceable multi-level waterproof strip as described in claim 2, characterized in that: The control unit includes a control block (311), which is fixedly installed on the top of the slider (37). One end of the control block (311) is fixedly connected to a control rope (312). The control rope (312) passes through the limit plate (39) and is fixedly connected to a hook (313). The hook (313) is located at the entrance of the slide rail (31).

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