Post-grouting anti-corrosion device for pipe pile end
By designing protective components at the end of the pipe pile, including protective base plate and limit plate, the crack problem caused by thermal expansion and contraction after grouting is solved, the corrosion resistance of the pipe pile is achieved, and durability and corrosion resistance are improved.
Patent Information
- Application Number
- CN202421000949.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing pipe pile post-grouting anti-corrosion device generates heat after grouting due to chemical reactions, which causes thermal expansion and contraction of the pile ends, which is prone to cracks and damage to the pipe piles.
A pipe pile end grouting and corrosion protection device is designed including a protective component. The protective component includes a protective base plate, a limiting plate, a grouting plate and a grouting pipe. It is bonded to the outer wall of the pipe pile through the limiting plate, and a small amount of slurry is found during grouting. Exhaust through the through holes and connection holes to prevent slurry from flowing out and play a role in corrosion protection, and prevent cracks caused by thermal expansion and contraction.
It effectively prevents cracks caused by slurry outflow and thermal expansion and contraction after grouting, improves the durability and corrosion resistance of pipe piles, and ensures the stability of the engineering foundation and the safety of the building.
Smart Images
Figure CN222227386U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation anti-corrosion, in particular to a post-grouting anti-corrosion device for a pipe pile end. Background Art
[0002] PHC pipe piles refer to a kind of slender hollow concrete prefabricated components made by prestressing and centrifugal forming. This type of pile has the advantages of being suitable for industrial-scale production, easy to ensure quality, high single pile bearing capacity, strong adaptability to engineering geological conditions, fast construction speed, and no pollution on site. Therefore, PHC pipe piles are increasingly widely used in engineering, which is in line with the development direction of my country's construction industrialization.
[0003] The existing patent CN205024687U discloses a post-grouting anti-corrosion device for the pile end of a pipe pile. This anti-corrosion device can be used for grouting at the pile end of a PHC pipe pile, thereby greatly improving the stress condition of the pile end of the PHC pipe pile during production and transportation and during pile driving construction, reducing or even avoiding the formation and development of small cracks at the pile end during pile driving, protecting the steel bars at the pile end from corrosion damage after pile sinking, and effectively improving the durability and corrosion resistance of pipe piles in coastal areas and areas with strong groundwater corrosion, ensuring the stability of the engineering foundation, and improving the safety of the building.
[0004] This patent solves the problem of corrosion prevention at the ends of pipe piles. However, this patent still has the following shortcomings. For example, only grouting in cans cannot effectively prevent corrosion. After grouting, the poured material generates heat under the action of chemical reaction. At this time, the pile ends are easily squeezed into cracks due to thermal expansion and contraction, causing damage to the pipe piles.
[0005] Therefore, the utility model provides a post-grouting anti-corrosion device for a pipe pile end. Utility Model Content
[0006] The utility model aims to solve the shortcomings in the prior art and provide a post-grouting anti-corrosion device for a pipe pile end.
[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pipe pile end post-grouting anti-corrosion device, comprising a pipe pile, wherein a protective component is arranged inside the pipe pile;
[0008] The protection assembly includes a protection bottom plate, which is provided with a rotation groove. There are four rotation grooves in total, and the four rotation grooves are distributed in a rectangular shape. The four rotation grooves are rotatably connected to a limit plate. A grouting disk is provided on the top of the protection bottom plate, and a grouting pipe is fixedly connected to the grouting disk.
[0009] As a preferred embodiment, the limiting plate is provided with connecting holes, and there are three connecting holes in total. The three connecting holes are distributed in an arc shape, and the angles between two adjacent connecting holes are equal. The inner wall of the limiting plate is directly adapted to the outer wall diameter of the pipe pile.
[0010] The technical effect of adopting the above further scheme is: after the limiting plate is fitted with the outer wall of the pipe pile, the connecting hole and the through hole are connected. At this time, during the grouting process, a small amount of slurry is discharged through the through hole through the connecting hole, a small amount of grouting is performed on the outer wall of the pipe pile, and the connection of the structure is treated with anti-corrosion.
[0011] As a preferred implementation, a clamping groove is provided at the bottom of the pipe pile, and there are four clamping grooves in total. The distribution positions of the four clamping grooves are the same as the distribution positions of the limiting plates.
[0012] The technical effect of adopting the above further scheme is: the limit plate is limited by the clamping groove to prevent the protective base plate from rotating in the pipe pile during grouting, to prevent insufficient grouting at the connection between the pipe pile and the protective base plate, and the clamping groove can play a positioning effect so that the connecting hole and the through hole can be aligned.
[0013] As a preferred embodiment, a through hole is opened on the pipe pile above the clamping groove, and there are three through holes in total. The distribution positions of the three through holes are the same as the distribution positions of the connecting holes, and the three through holes are connected to the three connecting holes respectively.
[0014] The technical effect of adopting the above further scheme is: a small amount of slurry is discharged through the through hole and the connecting hole, and a small amount of grouting is performed on the outer wall of the pipe pile. The small amount of grouting can also play the role of limiting the position of the limit plate and the pipe pile. When the slurry hardens, the displacement and separation of the limit plate and the pipe pile are avoided.
[0015] As a preferred implementation, spring plates are provided on both sides of the limiting plate on the protective bottom plate, and the other ends of the spring plates are connected to the limiting plate.
[0016] The technical effect of adopting the above further scheme is: the limit plate is driven to expand outward by the spring piece. When the protective component reaches the specified position, the specified position is that the space reserved between the protective component and the pipe pile is sufficient for the limit plate to flip over. When the limit plate completes the flipping, the protective component is pulled upward so that the limit plate and the clamping groove are clamped and limited to each other.
[0017] As a preferred embodiment, there are four grouting pipes in total, and the positions of the four grouting pipes are the same as the distribution positions of the limit plates. The top of the grouting plate is fixedly connected with a threaded pipe, which is connected to the four grouting pipes, and a connecting pipe is arranged on the top of the threaded pipe.
[0018] The technical effect of adopting the above further scheme is: through the position distribution of the grouting pipe, when the grouting operation is carried out, the slurry is discharged through the connecting hole, the discharged slurry contacts the limit plate, and the thrust generated is used in conjunction with the spring clip to fully expand the four limit plates so that the limit plates reach the predetermined position.
[0019] Compared with the prior art, the advantages and positive effects of the utility model are:
[0020] By placing the protection component inside the pipe pile, when the protection component reaches the specified position, the limit plate loses the limit of the pipe pile, and expands to the surroundings under the action of the spring sheet. After expanding, the protection component is pulled upward so that the limit plate is clamped in the clamping groove. At this time, the limit plate is completely in contact with the outer wall of the bottom end of the pipe pile. Under the action of the limit plate, the bottom of the pipe pile is protected to prevent the slurry from chemically reacting after the subsequent grouting operation. The heat generated will crack the bottom of the pipe pile, and the slurry is further limited by the protective bottom plate to prevent the slurry from flowing out from the bottom of the pipe pile when it is still in a fluid state.
[0021] Furthermore, the grouting pipe allows the slurry to flow out from four directions simultaneously during grouting to avoid uneven grouting. When a certain spring piece is damaged and cannot be fully expanded, a backup method can be used. When the limit plate has not reached the specified state, a small amount of slurry is first poured. At this time, a small amount of slurry is discharged after passing through the grouting pipe. Due to the alignment of the grouting pipe and the limit plate, the thrust generated by the slurry during pouring can assist in expanding the limit plate, ensuring that the limit plate is in the specified state and improving stability during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of the structure of a pipe pile end post-grouting anti-corrosion device provided by the utility model;
[0023] Figure 2 This is a disassembled diagram of a pipe pile end post-grouting anti-corrosion device provided by the utility model;
[0024] Figure 3 A schematic diagram of the structure of a pipe pile in a pipe pile end post-grouting anti-corrosion device provided by the utility model;
[0025] Figure 4 A schematic diagram of the structure of a protective component in a pipe pile end post-grouting anti-corrosion device provided by the utility model;
[0026] Figure 5 The utility model provides a structural schematic diagram of a protective bottom plate in a pipe pile end post-grouting anti-corrosion device.
[0027] Legend:
[0028] 1. Pipe pile; 11. Snap-in groove; 12. Through hole; 2. Protective assembly; 21. Protective bottom plate; 22. Spring piece; 23. Rotation groove; 3. Limit plate; 31. Connecting hole; 4. Grouting plate; 41. Grouting pipe; 42. Threaded pipe; 5. Connecting pipe. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] like Figure 1 - Figure 5 As shown, the present embodiment provides a technical solution: a post-grouting anti-corrosion device for a pipe pile end, comprising a pipe pile 1, wherein a protective assembly 2 is arranged in the pipe pile 1; the protective assembly 2 comprises a protective bottom plate 21, and a rotating groove 23 is provided on the protective bottom plate 21, and a total of four rotating grooves 23 are provided, and the four rotating grooves 23 are distributed in a rectangular shape, and the four rotating grooves 23 are rotatably connected to a limiting plate 3, and a grouting disk 4 is provided on the top of the protective bottom plate 21, and a grouting pipe 41 is fixedly connected to the grouting disk 4, and a total of four grouting pipes 41 are provided, and the positions of the four grouting pipes 41 are the same as the distribution positions of the limiting plate 3, and a threaded pipe 42 is fixedly connected to the top of the grouting disk 4, and the threaded pipe 42 is connected to the four grouting pipes 41, and the threaded pipe 42 is connected to the four grouting pipes 41, and the threaded pipe 42 is connected to the four grouting pipes 41. A connecting pipe 5 is provided on the top of the corrugated tube 42. By placing the protective component 2 inside the pipe pile 1, when the protective component 2 reaches the specified position, the limiting plate 3 loses the limiting function of the pipe pile 1 and is expanded to the surroundings under the action of the spring piece 22. After expansion, the protective component 2 is pulled upward so that the limiting plate 3 is clamped in the clamping groove 11. At this time, the limiting plate 3 is completely in contact with the outer wall of the bottom end of the pipe pile 1. Under the action of the limiting plate 3, the bottom of the pipe pile 1 is protected, and the slurry is further limited by the protective bottom plate 21, which solves the technical problems of the slurry flowing out from the bottom of the pipe pile 1 when it is still in a fluid state, and the slurry generating a chemical reaction after the subsequent grouting operation, and the heat generating the cracks the bottom of the pipe pile 1.
[0031] Further, such as Figure 2 - Figure 4As shown: there are three connecting holes 31 in total, and the three connecting holes 31 are distributed in an arc shape, and the angles between two adjacent connecting holes 31 are equal, the inner wall of the limiting plate 3 is directly adapted to the outer wall diameter of the pipe pile 1, and a through hole 12 is opened on the pipe pile 1 above the clamping groove 11. There are three through holes 12 in total, and the distribution positions of the three through holes 12 are the same as the distribution positions of the connecting holes 31. The three through holes 12 are connected with the three connecting holes 31 respectively, and after the limiting plate 3 is fitted with the outer wall of the pipe pile 1, the connecting hole 31 is connected with the through holes 12. At this time, during the grouting process, a small amount of slurry is discharged through the through holes 12 through the connecting holes 31, and a small amount of grouting is performed on the outer wall of the pipe pile 1, and the small amount of grouting can also play the role of limiting the limiting plate 3 and the pipe pile 1. When the slurry hardens, the displacement and separation of the limiting plate 3 and the pipe pile 1 is avoided, and a small amount of grouting can be used to perform anti-corrosion treatment on the joints of the structure.
[0032] When the through hole 12 is not aligned with the connecting hole 31, the slurry in the pipe pile 1 cannot be discharged through the connecting hole 31. Figure 2 - Figure 5 As shown: In the present embodiment, a clamping groove 11 is provided at the bottom of the pipe pile 1, and there are four clamping grooves 11 in total. The distribution positions of the four clamping grooves 11 are the same as the distribution positions of the limiting plates 3. The limiting plates 3 are limited by the clamping grooves 11 to prevent the protective bottom plate 21 from rotating in the pipe pile 1 during grouting, thereby preventing insufficient grouting at the connection between the pipe pile 1 and the protective bottom plate 21. The clamping grooves 11 can also play a positioning effect, so that the connecting hole 31 can be aligned with the through hole 12.
[0033] When the limit plate 3 is not turned over to the specified position during use, not only the protection effect cannot be achieved, but the protection component 2 will be stuck, affecting the normal operation, such as Figure 4 As shown: In the present embodiment, spring plates 22 are arranged on both sides of the limiting plate 3 on the protective bottom plate 21, and the other end of the spring plate 22 is connected to the limiting plate 3. The limiting plate 3 is driven to expand outward by the spring plate 22. When the protective component 2 reaches the specified position, the specified position is that the space reserved between the protective component 2 and the pipe pile 1 is sufficient for the limiting plate 3 to flip over. When the limiting plate 3 completes the flipping, the protective component 2 is pulled upward so that the limiting plate 3 and the clamping groove 11 are clamped and limited with each other.
[0034] In this embodiment, the protective bottom plate 21 and the limiting plate 3 are both made of stainless steel. Stainless steel has good corrosion resistance, mainly because it contains chromium elements, forming a dense oxide film that can effectively resist the erosion of most corrosive media.
[0035] In this embodiment, the poured slurry is concrete. Concrete slurry is a common pouring material. It can fill the gap at the bottom of the pipe pile 1 and form a protective layer to prevent erosion by moisture and other corrosive substances. The concrete slurry can be formulated as needed to adapt to different soil conditions and pipe pile 1 materials.
[0036] In this embodiment, the connecting pipe 5 is a delivery pipe of the grouting equipment, the bottom of the connecting pipe 5 is threadedly connected to the threaded pipe 42, and the other end of the connecting pipe 5 is connected to the grouting equipment.
[0037] In this embodiment, when a certain spring piece 22 is damaged and cannot be fully deployed, a backup method can be used. When the limit plate 3 has not reached the specified state, a small amount of slurry is first poured. At this time, a small amount of slurry is discharged after passing through the grouting pipe 41. Since the grouting pipe 41 is aligned with the limit plate 3, the thrust generated by the slurry during the pouring can assist the limit plate 3 in expanding, ensuring that the limit plate 3 is in the specified state.
[0038] Working principle:
[0039] like Figure 1-5 As shown:
[0040] When in use: first, thread the connecting pipe 5 onto the threaded pipe 42, then place the protection component 2 in the pipe pile 1. When the protection component 2 reaches the specified position, the limit plate 3 loses the limit of the pipe pile 1, and under the action of the spring piece 22, it expands to the surroundings. After expanding, pull the protection component 2 upward so that the limit plate 3 is clamped in the clamping groove 11. At this time, the limit plate 3 is completely in contact with the outer wall of the bottom end of the pipe pile 1. Under the action of the limit plate 3, the bottom of the pipe pile 1 is protected. At this time, turn on the grouting equipment and transport the slurry through the connecting pipe 5. At this time, the slurry is sprayed out from the four grouting pipes 41 to carry out the grouting operation. After the grouting operation is completed, rotate the connecting pipe 5 to separate it from the threaded pipe 42. After separation, pull out the connecting pipe 5.
[0041] The above description is only a preferred embodiment of the present invention and does not constitute an exhaustive description of the present invention.
[0042] Other forms of restrictions: any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the protection scope of the technical solution of the utility model.
Claims
1. A post-grouting anti-corrosion device for a pipe pile end, comprising a pipe pile (1), characterized in that: A protection component (2) is arranged inside the pipe pile (1); The protection assembly (2) comprises a protection bottom plate (21), the protection bottom plate (21) is provided with a rotation groove (23), a total of four rotation grooves (23) are provided, and the four rotation grooves (23) are distributed in a rectangular shape, the four rotation grooves (23) are all rotatably connected to a limit plate (3), a grouting plate (4) is provided on the top of the protection bottom plate (21), and a grouting pipe (41) is fixedly connected to the grouting plate (4).
2. The post-grouting anti-corrosion device for pipe pile ends according to claim 1 is characterized in that: The limiting plate (3) is provided with a connection hole (31), and there are three connection holes (31) in total. The three connection holes (31) are distributed in an arc shape, and the angles between two adjacent connection holes (31) are equal. The inner wall of the limiting plate (3) is directly matched with the outer wall diameter of the pipe pile (1).
3. The post-grouting anti-corrosion device for pipe pile ends according to claim 1 is characterized in that: The bottom of the pipe pile (1) is provided with a clamping groove (11), and there are four clamping grooves (11) in total. The distribution positions of the four clamping grooves (11) are the same as the distribution positions of the limiting plates (3).
4. The post-grouting anti-corrosion device for pipe pile ends according to claim 3 is characterized in that: A through hole (12) is provided on the pipe pile (1) above the clamping groove (11), and there are three through holes (12) in total. The distribution positions of the three through holes (12) are the same as the distribution positions of the connection holes (31), and the three through holes (12) are respectively connected to the three connection holes (31).
5. The post-grouting anti-corrosion device for pipe pile ends according to claim 1 is characterized in that: The protective bottom plate (21) is provided with spring pieces (22) on both sides of the limiting plate (3), and the other end of the spring piece (22) is connected to the limiting plate (3).
6. The post-grouting anti-corrosion device for pipe pile ends according to claim 1 is characterized in that: A total of four grouting pipes (41) are provided, and the positions of the four grouting pipes (41) are the same as the distribution positions of the limiting plates (3). A threaded pipe (42) is fixedly connected to the top of the grouting plate (4), and the threaded pipe (42) is connected to the four grouting pipes (41). A connecting pipe (5) is provided on the top of the threaded pipe (42).