Water stopping and pile sealing structure for anchor rod static pressure pile

Abstract

The utility model provides a water stopping and pile sealing structure for an anchor rod static pressure pile, which comprises the anchor rod static pressure pile, the anchor rod static pressure pile is pressed into soil along a pile pressing hole of a bottom plate, and the anchor rod static pressure pile is formed by connecting at least one section of pipe pile up and down. The water stopping and pile sealing structure for the anchor rod static pressure pile comprises a water stopping belt which is arranged on the outer diameter of the uppermost pipe pile in a sleeving mode and located in the through hole, the water stopping belt is in a hollow ring shape with an annular cavity formed inside, and a grouting valve connected with the annular cavity is arranged at the top of the water stopping belt. Grouting is injected into the annular cavity through the grouting valve, and the water stop is expanded to block the pile pressing hole; a pile cap is poured in the pile pressing hole in the top of the water stop belt. According to the water-stop belt, the injection of the grouting body is accurately controlled through the grouting valve, so that the water-stop belt can be quickly and uniformly expanded to be tightly attached to the inner walls of the pipe pile and the pile pressing hole, and a possible water leakage channel is effectively blocked.

Description

Technical Field

[0001] The utility model relates to the construction of anchor static pressure piles, and particularly to a water-stop and pile-sealing structure for anchor static pressure piles. Background Art

[0002] The anchor static pressure pile is a technology widely used in the reinforcement of building foundations. Its remarkable features include a simple construction process, high speed, and significant reinforcement effect. This technology mainly connects the pile frame and the foundation into a whole by using anchor bolts, and presses the anchor bolts into the foundation soil by means of the self-weight of the building. After this process is completed, the anchor bolts are closely combined with the building foundation by means of pile sealing to form a whole that bears force together.

[0003] Before the construction of the anchor static pressure pile, a pile pressing hole is opened on the foundation slab. The diameter of this hole is slightly larger than the diameter of the anchor bolt itself, so as to form a certain gap between the two. When the groundwater level is higher than the building foundation surface, the groundwater will seep out through this pile hole. In order to prevent water leakage caused by the gap between the anchor static pressure pile and the bottom slab, it is necessary to carry out water-stop treatment on the pile hole.

[0004] Generally, the water expansion property of the water-stop strip is utilized to install a water-stop belt between the anchor static pressure pile and the building bottom slab. Then, the pile-sealing material is poured to complete the water-stop and sealing process. However, the sealing effect of the strip-shaped water-stop belt at the joint lap is often not ideal, and it is easy to have water leakage problems if not properly treated. Therefore, it is very necessary to improve the common water-stop and pile-sealing structure to improve its sealing performance and avoid water leakage. Summary of the Utility Model

[0005] The utility model provides a water-stop and pile-sealing structure for anchor static pressure piles, which includes an anchor static pressure pile. The anchor static pressure pile is pressed into the soil along the pile pressing hole of the bottom slab. The anchor static pressure pile is connected by at least one upper and lower pipe pile. The water-stop and pile-sealing structure for anchor static pressure piles includes a water-stop belt sleeved on the outer diameter of the uppermost pipe pile and located in the pile pressing hole. The water-stop belt is a hollow ring with an annular cavity inside. A grouting valve connected to the annular cavity is arranged at the top of the water-stop belt. The grouting body is injected into the annular cavity through the grouting valve to expand the water-stop belt and seal the pile pressing hole.

[0006] A pile cap is poured in the pile pressing hole at the top of the water-stop belt.

[0007] Further, the grouting valve is provided with a one-way check mechanism.

[0008] Further, the pile cap is made of concrete.

[0009] Furthermore, a water-stop and pile-sealing material is filled between the outer wall of the water-stop belt and the inner wall of the pile-pressing hole.

[0010] In view of the problem of poor sealing performance at the interface section of the commonly used strip-shaped water-stop belt during the pile-sealing of anchor-pressed piles at present, the present utility model proposes an innovative solution. By improving the traditional strip-shaped water-stop belt into an integrally designed hollow annular water-stop belt, the present utility model not only improves the sealing performance of the water-stop belt, but also enhances its deformation adaptability.

[0011] The design of the present utility model is based on the specific characteristics of the on-site anchor-pressed pile foundation reinforcement construction and the force action mechanism of the water-stop belt in actual work. In the traditional water-stop belt, the principle of swelling when encountering water enables it to passively play the role of squeezing and sealing water. However, this action mechanism often has certain limitations. Therefore, the present utility model transforms this passive action mechanism into an active grouting and squeezing method, enabling the water-stop belt to more actively adapt to deformation, and thus better play its role of sealing and stopping water.

[0012] Through this improvement, the new water-stop belt can effectively meet the pile-sealing and water-stopping requirements of the anchor-pressed piles during the foundation reinforcement construction. In actual construction, this integrally designed water-stop belt can provide a more stable water-stop and pile-sealing effect, ensuring the construction quality of the anchor-pressed piles. At the same time, due to its strong deformation adaptability, the new water-stop belt can maintain a good water-stop effect in various complex construction environments, improving the construction efficiency and reducing the construction cost.

[0013] By improving the design of the water-stop belt from the traditional strip-shaped water-stop belt to an integrally new water-stop belt, the present utility model successfully solves the problem of poor sealing performance at the interface section, improves the deformation adaptability of the water-stop belt, enables it to better play the role of sealing and stopping water in the pile-sealing construction of anchor-pressed piles, and provides a strong guarantee for the efficient and high-quality completion of the foundation reinforcement construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of a water-stop and pile-sealing structure for an anchor-pressed pile of the present utility model;

[0016] Figure 2 It is a top view of the water-stop belt of the present utility model;

[0017] Figure 3This is a side view of the water stop of the present utility model;

[0018] Figure 4 This is a schematic diagram of the water stop of the present utility model before and after grouting and expansion;

[0019] Figures 5 to 9 This is a schematic diagram of the implementation method of the present utility model, where

[0020] Figure 5 This is a schematic diagram of accessing the last pipe pile;

[0021] Figure 6 This is a schematic diagram of installing the water stop on the last pipe pile;

[0022] Figure 7 This is a schematic diagram of pressing the last pipe pile into the soil to a specified depth;

[0023] Figure 8 This is to inject grouting material into the water stop and make it expand to seal the gap between the pipe pile and the floor slab;

[0024] Figure 9 This is a schematic diagram of grouting in the pile hole of the floor slab pressing pile at the top of the water stop to form a pile cap. Detailed implementation method

[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0026] In order to thoroughly understand the present utility model, detailed steps and detailed structures will be presented in the following description to explain the technical solution of the present utility model. The preferred embodiments of the present utility model are described in detail as follows. However, in addition to these detailed descriptions, the present utility model can also have other implementation manners.

[0027] Refer to Figures 1 - 4As shown in the figure, the present utility model provides a water-stop and pile-sealing structure for anchor static pressure piles, which includes an anchor static pressure pile 6 that is pressed into the soil along the pile-pressing hole 21 of the bottom plate 2. The anchor static pressure pile 6 is formed by connecting at least one upper and lower pipe pile. The water-stop and pile-sealing structure for anchor static pressure piles of the present utility model includes a water-stop belt 3 sleeved on the outer diameter of the uppermost pipe pile and located in the pile-pressing hole 21. The water-stop belt 3 is a hollow ring with an annular cavity inside. A grouting valve 4 connected to the annular cavity is provided at the top of the water-stop belt 3. The grouting valve 4 has a one-way anti-reverse function. The grouting body 5 is injected into the annular cavity through the grouting valve 4 to expand the water-stop belt 3 and seal the pile-pressing hole 21. To further ensure the sealing effect, a water-stop and pile-sealing material is filled between the outer wall of the water-stop belt 3 and the inner wall of the pile-pressing hole 21. Concrete is poured in the pile-pressing hole 21 at the top of the water-stop belt 3 to form a pile cap 1.

[0028] As Figures 5 - 9 , the implementation steps of this embodiment are as follows:

[0029] 1) First, before the uppermost pipe pile 61 of the anchor static pressure pile 6 is jacked, the water-stop belt 3 is sleeved at a certain distance below the pipe pile 61, as Figures 5 - 6 shown in the figure.

[0030] 2) The anchor static pressure pile 6 is pressed to the design elevation, and the water-stop belt 3 and the grouting valve 4 installed on the water-stop belt 3 are also sent to the corresponding positions, as Figure 7 shown in the figure.

[0031] 3) The grouting body 5 is injected into the cavity of the water-stop belt 3 through the grouting valve 4. Since the water-stop belt 3 is made of a flexible material and its annular cavity design allows the grouting body to be evenly distributed inside, as the grouting body 5 is gradually injected, the water-stop belt 3 begins to expand until the inner and outer walls of the water-stop belt 3 are respectively in close contact with the pipe pile 61 and the pile-pressing hole 21, sealing the gap between the pipe pile 61 and the pile-pressing hole of the bottom plate to form an effective waterproof barrier, as Figure 8 shown in the figure. During this process, the one-way anti-reverse function of the grouting valve 4 ensures that the grouting body will not flow back, guaranteeing the accuracy and efficiency of grouting. To further improve the water-stop effect, after the water-stop belt 3 is grouted, a water-stop and pile-sealing material can also be filled between the outer wall of the expanded water-stop belt 3 and the inner wall of the pile-pressing hole 21.

[0032] 4) After the water-stop is completed, concrete is poured in the pile-pressing hole 21 at the top of the water-stop belt 3 to form a pile cap 1, as Figure 9 shown in the figure.

[0033] In summary, the advantages of the present utility model are as follows:

[0034] I. Improving water-stop efficiency and reliability: By adopting the design of actively grouting and compressing the water-stop belt, the utility model significantly improves the water-stop efficiency and reliability. Traditional water-stop strips often rely on the water-swellable property of the material itself to achieve water-stop, but the water-stop effect of this method is often affected by various factors such as environmental conditions and material quality, with great uncertainty. In the water-stop belt of the utility model, the injection of the grouting body is precisely controlled through the grouting valve, enabling the water-stop belt to expand rapidly and evenly, closely fitting with the pipe pile and the inner wall of the pile pressing hole, thus effectively blocking the possible water leakage channels. At the same time, the one-way anti-backflow function of the grouting valve also ensures the smooth progress of the grouting process, avoiding the backflow and waste of the grouting body.

[0035] II. Enhancing structural stability and durability: The expansion of the water-stop belt not only realizes the water-stop function but also enhances the structural connection between the pipe pile and the floor slab. Since the water-stop belt closely fits with the pipe pile and the inner wall of the pile pressing hole during the expansion process, a firm connection layer is formed, which helps to improve the stability of the entire anchor jacked pile foundation. In addition, both the water-stop belt and the grouting body are made of high-quality materials, with excellent durability and anti-aging performance, and can maintain a stable water-stop effect during long-term use, extending the service life of the foundation.

[0036] III. Simplifying the construction process and reducing construction costs: The water-stop pile sealing structure of the utility model does not require complex operation steps and special construction equipment during the construction process. It only needs to be installed, grouted, and poured according to the established process. This not only simplifies the construction process, reduces the construction difficulty and cost, but also improves the construction efficiency. At the same time, due to the more reliable water-stop effect, the workload of later maintenance and leak repair is reduced, further reducing the construction cost.

[0037] IV. Wide range of applications: The water-stop pile sealing structure provided by the utility model is not only applicable to the water-stop pile sealing requirements of anchor jacked piles but also can be widely applied to other similar foundation reinforcement and waterproof projects. As long as it is a situation where water-stop pile sealing is required, this structure can be used to achieve an effective waterproof effect. Therefore, this structure has broad application prospects and market value.

[0038] In summary, the water-stop pile sealing structure for anchor jacked piles provided by the utility model has many advantages and remarkable technical effects. It not only improves the water-stop efficiency and reliability, enhances the structural stability and durability, simplifies the construction process and reduces the construction cost, but also has a wide range of applications and the characteristics of environmental protection and energy conservation. Therefore, this structure has broad application prospects and market value in the field of foundation reinforcement and waterproof engineering.

[0039] The preferred embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and the devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A water-stopping pile structure for anchor static pressure piles, comprising an anchor static pressure pile (6), wherein the anchor static pressure pile (6) is pressed into the soil along a pile pressure hole (21) of a bottom plate (2), and the anchor static pressure pile (6) is formed by connecting at least one upper and lower pipe pile, characterized in that: The water-stopping and sealing pile structure for anchor static piles comprises a water-stop belt (3) which is sleeved on the outer diameter of the uppermost section of the pipe pile and located in the pile-pressing hole (21); the water-stop belt (3) is a hollow ring with an annular cavity inside; a grouting valve (4) connected to the annular cavity is provided at the top of the water-stop belt (3); a grouting body (5) is injected into the annular cavity through the grouting valve (4) to expand the water-stop belt (3) and seal the pile-pressing hole (21); A pile cap (1) is cast in the pile-pressing hole (21) at the top of the water stop strip (3).

2. A water-stopping pile seal structure for anchor static pressure piles as claimed in claim 1, characterized in that: The grouting valve (4) is provided with a one-way non-return mechanism.

3. A water-stopping pile seal structure for anchor static pressure piles as claimed in claim 1, characterized in that: The pile cap (1) is made of concrete.

4. A water-stopping pile seal structure for anchor static pressure piles as claimed in claim 1, characterized in that: A water-stopping pile sealing material is filled between the outer wall of the water-stopping strip (3) and the inner wall of the pile-pressing hole (21).

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