A type of slow-bonding prestressed tension waterproof structure

By incorporating a water-absorbing layer and a waterproof layer with a slow-bonding design in the prestressed tension structure, the problem of water ingress affecting performance and causing corrosion is solved, resulting in stronger waterproof performance and stability.

CN224431505UActive Publication Date: 2026-06-30CHINA RAILWAY CONSTRUCTION GROUP XIONGAN DEVELOPMENT CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY CONSTRUCTION GROUP XIONGAN DEVELOPMENT CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing prestressed pipe piles suffer from water penetration during rainy weather or when the soil moisture content is high, which affects their performance and corrodes the structure.

Method used

A slow-bonding prestressed tension waterproof structure was designed, including a water-absorbing layer and a waterproof layer sleeved on the outer wall of the support rod. The waterproof layer is provided with spiral drainage holes. It is combined with a water-absorbing sponge and a polyethylene waterproof layer. An outer shell and a top cover are added to enhance protection.

Benefits of technology

It effectively diverts moisture, reducing the probability of it entering the interior, preventing corrosion, and improving the stability and performance of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a slow-bonding prestressed tension waterproof structure. The key technical points are: it includes a support rod, the outer wall of which is fitted with a water-absorbing layer, and the outer wall of which is fitted with a waterproof layer. The outer wall of the waterproof layer has several drainage holes, each with a spiral groove structure. These drainage holes connect the top and bottom surfaces of the waterproof layer. By providing these drainage holes, on the one hand, the design connecting the top and bottom surfaces of the waterproof layer allows for the diversion of directly injected water in water-rich environments, guiding the water along the drainage hole's path into the soil and reducing the probability of it entering the interior. On the other hand, its spiral design allows for the protection of a larger area of ​​the waterproof layer surface through the limited area of ​​the drainage holes. Water from any direction contacting the surface of the waterproof layer can be diverted through the drainage holes, further enhancing the waterproofing effect.
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Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a slow-bonding prestressed tension waterproof structure. Background Technology

[0002] In recent years, with the rapid development of the national economy, urban construction has also developed rapidly, with high-rise and super high-rise buildings constantly emerging. At the same time, the development and utilization of underground structures serving functions such as underground vehicular and pedestrian access, underground parking, underground commercial use, and underground civil defense have become increasingly widespread. These developments have led to increasingly deeper building foundations. Therefore, how to effectively solve the problem of anti-buoyancy in underground structures has become a frequent challenge in the engineering field. There are numerous real-world examples in China of underground engineering projects being damaged due to inadequate anti-buoyancy measures.

[0003] Existing prestressed pipe piles are generally pre-buried in the soil to facilitate further operations. However, during actual use, when encountering rainy weather or when the soil itself has a high moisture content, water can enter the interior of the prestressed pipe pile, which not only affects the actual performance of the device but also corrodes the internal structure. To address this, we propose a slow-bonding prestressed tensioning waterproof structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a slow-bonding prestressed tensioning waterproof structure, which solves the problem that in actual use, when encountering rainy weather or soil with high moisture content, water will enter the interior of the prestressed pipe pile, affecting not only the actual use effect of the device but also corroding the internal structure.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A slow-bonding prestressed tension waterproof structure is provided, which includes a support rod, an absorbent layer on the outer wall of the support rod, a waterproof layer on the outer wall of the absorbent layer, and a plurality of drainage holes on the outer wall of the waterproof layer. The drainage holes are spiral groove structures and connect the top and bottom surfaces of the waterproof layer.

[0007] Preferably, the absorbent layer is made of waterproof sponge, the waterproof layer is made of polyethylene, and the top surface of the support rod is provided with a plurality of first limiting holes. The plurality of first limiting holes are evenly distributed on the top surface of the support rod in a circular trajectory, and the center of the circular trajectory formed by the plurality of first limiting holes is the same as the center of the top surface of the support rod.

[0008] Preferably, both the absorbent layer and the waterproof layer have a plurality of second limiting holes on their top surfaces, and the plurality of second limiting holes correspond one-to-one with the plurality of first limiting holes. A sealing ring is fixedly installed inside the second limiting holes on the top surface of the waterproof layer.

[0009] Preferably, the outer wall of the waterproof layer is fitted with an outer shell, and a top cover is fixedly installed inside the outer shell. The top surface of the top cover has a plurality of third limiting holes, and the plurality of third limiting holes correspond one-to-one with the plurality of first limiting holes.

[0010] Preferably, a reinforcing rib is fixedly installed on the top surface of the top cover. The reinforcing rib is a star-shaped structure. A plurality of limiting rings are provided on the top surface of the top cover. Each of the limiting rings corresponds to a third limiting hole. All of the limiting rings are fixedly installed together with the reinforcing rib.

[0011] In summary, the present invention has the following main advantages:

[0012] By setting drainage holes, on the one hand, the design connecting the top and bottom surfaces of the waterproof layer can guide the water directly injected into the soil when encountering water-rich environments, allowing the water to enter the soil along the trajectory of the drainage holes and reducing the probability of water entering the interior. On the other hand, its spiral design can protect a larger area of ​​the waterproof layer surface through the limited area of ​​the drainage holes. Water from any direction that comes into contact with the surface of the waterproof layer can be guided through the drainage holes, further increasing the actual waterproofing effect.

[0013] By incorporating reinforcing ribs and a limiting ring, the position of the reinforcing bar can be limited by the limiting ring. The reinforcing ribs, in conjunction with the reinforcing bars, enhance the stability of the reinforcing bar after insertion, thereby increasing the stability of the device and making it more practical. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the support rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the top cover structure of this utility model.

[0018] Reference numerals in the attached diagram: 1. Support rod; 2. Absorbent layer; 3. Waterproof layer; 4. Drainage hole; 5. First limiting hole; 6. Second limiting hole; 7. Sealing ring; 8. Outer shell; 9. Top cover; 10. Third limiting hole; 11. Reinforcing rib; 12. Limiting ring. Detailed Implementation

[0019] 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.

[0020] refer to Figures 1-4 This solution provides a slow-bonding prestressed tension waterproof structure, which includes a support rod 1. The outer wall of the support rod 1 is fitted with a water-absorbing layer 2, and the outer wall of the water-absorbing layer 2 is fitted with a waterproof layer 3. The outer wall of the waterproof layer 3 has several drainage holes 4, which are spiral groove structures. The drainage holes 4 connect the top and bottom surfaces of the waterproof layer 3. Through the design of the drainage holes 4, on the one hand, by connecting the top and bottom surfaces of the waterproof layer 3, it can guide the water directly injected into the soil when encountering a water-rich environment, allowing the water to enter the soil along the trajectory of the drainage holes 4, reducing the probability of water entering the interior. On the other hand, through its spiral design, it can protect a larger area of ​​the surface of the waterproof layer 3 through the limited area of ​​the drainage holes 4. Water from any direction that comes into contact with the surface of the waterproof layer 3 can be guided through the drainage holes 4, further increasing the actual waterproofing effect.

[0021] The absorbent layer 2 is made of waterproof sponge, and the waterproof layer 3 is made of polyethylene. Several first limiting holes 5 are opened on the top surface of the support rod 1. The several first limiting holes 5 are evenly distributed on the top surface of the support rod 1 in a circular trajectory. The center of the circular trajectory formed by the several first limiting holes 5 is the same as the center of the top surface of the support rod 1. Through the design of the absorbent layer 2 and the waterproof layer 3, the outer wall of the support rod 1 can be protected by the waterproof layer 3. On the one hand, it can facilitate the drainage hole 4 to drain water. On the other hand, it can prevent the waterproof layer 3 from being unable to absorb all the water in a water-rich environment, and the water will still penetrate into the interior and cause corrosion damage to the support rod 1.

[0022] Both the absorbent layer 2 and the waterproof layer 3 have several second limiting holes 6 on their top surfaces. These second limiting holes 6 correspond one-to-one with the first limiting holes 5. A sealing ring 7 is fixedly installed inside the second limiting holes 6 on the top surface of the waterproof layer 3. The design of the second limiting holes 6 ensures that the reinforcing bars can be inserted normally into the device, while preventing water from entering the device through the gap between the second limiting holes 6 and the reinforcing bars in a water-rich environment, thus preventing the protective function of the absorbent layer 2 and the waterproof layer 3 from failing.

[0023] The outer wall of the waterproof layer 3 is fitted with an outer shell 8, and a top cover 9 is fixedly installed inside the outer shell 8. Through the design of the outer shell 8 and the top cover 9, the third limiting hole 10 can further protect the structure composed of the support rod 1, the water-absorbing layer 2 and the waterproof layer 3 while ensuring the functionality of the device, thereby further increasing the actual strength of the device.

[0024] The top surface of the top cover 9 has several third limiting holes 10, which correspond one-to-one with several first limiting holes 5. A reinforcing rib 11 is fixedly installed on the top surface of the top cover 9. The reinforcing rib 11 has a star-shaped structure. A number of limiting rings 12 are provided on the top surface of the top cover 9, which correspond one-to-one with the third limiting holes 10. The limiting rings 12 are all fixedly installed together with the reinforcing rib 11. Through the design of the reinforcing rib 11 and the limiting rings 12, the position of the reinforcing bar can be limited by the limiting rings 12. In conjunction with the reinforcing rib 11, the stability after the reinforcing bar is inserted can be enhanced, which increases the stability of the device and makes the device more practical.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slow-bonding prestressed tension waterproof structure comprising a support rod (1), characterized in that, The outer wall of the support rod (1) is fitted with a water-absorbing layer (2), and the outer wall of the water-absorbing layer (2) is fitted with a waterproof layer (3). The outer wall of the waterproof layer (3) is provided with a plurality of drainage holes (4). The plurality of drainage holes (4) are spiral groove structures, and the drainage holes (4) connect the top and bottom surfaces of the waterproof layer (3).

2. The delayed-bonded prestressed tension waterproof structure according to claim 1, characterized in that, The absorbent layer (2) is made of waterproof sponge, the waterproof layer (3) is made of polyethylene, and the top surface of the support rod (1) is provided with a number of first limiting holes (5). The number of first limiting holes (5) are evenly distributed on the top surface of the support rod (1) in a circular trajectory. The center of the circular trajectory formed by the number of first limiting holes (5) is the same as the center of the top surface of the support rod (1).

3. The delayed-bonded prestressed tension waterproof structure according to claim 2, characterized in that, The top surfaces of the absorbent layer (2) and the waterproof layer (3) are provided with a number of second limiting holes (6), and the number of second limiting holes (6) and the number of first limiting holes (5) correspond one-to-one. A sealing ring (7) is fixedly installed inside the second limiting hole (6) on the top surface of the waterproof layer (3).

4. The slow-bonding prestressed tension waterproof structure according to claim 2, characterized in that, The outer wall of the waterproof layer (3) is fitted with a shell (8), and a top cover (9) is fixedly installed inside the shell (8). The top surface of the top cover (9) is provided with a number of third limiting holes (10), and the number of third limiting holes (10) corresponds one-to-one with the number of first limiting holes (5).

5. The slow-bonding prestressed tension waterproof structure according to claim 4, characterized in that, The top surface of the top cover (9) is fixedly installed with a reinforcing rib (11). The reinforcing rib (11) is a star-shaped structure. The top surface of the top cover (9) is provided with several limiting rings (12). The several limiting rings (12) correspond one-to-one with the third limiting hole (10). The several limiting rings (12) are all fixedly installed together with the reinforcing rib (11).