A pressurized pre-embedded pile

Abstract

The utility model relates to precast pile reinforcing technical field especially relates to a pressurized embedded pile, including bearing plate and embedded pile, bearing plate four corners are equipped with fixed column, the fixed column center is equipped with recess, recess is used for through the pull set anchor line with the ground, the movable hinge of bearing plate lower side is provided with multiple sets of limit ring, embedded pile is hollow cylinder, its top is equipped with grouting mouth, and the upper end is equipped with annular recess, and annular recess is used for limit ring to carry out clamping through clamping limit structure, and embedded pile bottom is equipped with the clamping mouth, and the clamping mouth is equipped with elastic film. The utility model discloses through the effect of pressurized grouting device, makes the elastic film at the clamping mouth of concrete slurry to stretch outwards, when the pressure in the precast pile breaks through the bearing limit of elastic film, the elastic film of convex flat disc is broken, and the concrete slurry flows into the soil, and then forms the disc structure on the outside of precast pile, thereby increasing the contact area with the soil, reducing the load, thereby guaranteeing the stability of precast pile.

Description

Technical Field

[0001] This utility model relates to the field of precast pile reinforcement technology, specifically a pressure-type pre-embedded pile. Background Technology

[0002] In the maintenance and construction of garden landscapes, the installation of precast piles is the foundation of many construction projects. Since garden areas are mostly composed of soft soil with low bearing capacity, they cannot effectively support the weight of the precast piles and their superstructure for a long time, resulting in uneven settlement of the pile foundation. At the same time, in soft soil layers, the pile body may bear large lateral pressure and bending moment, causing cracks or fractures in the pile body. The bearing capacity and stability of the pile foundation are reduced, making it difficult to meet the needs of rapid maintenance and layout of garden landscapes. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a pressurized pre-embedded pile, which has the advantage of high installation stability and solves the problem of traditional pre-embedded piles easily shaking in soft soil foundations.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A pressurized pre-embedded pile includes a bearing plate and a pre-embedded pile. A pressurized grouting device is provided above the bearing plate. Fixed columns are provided at the four corners of the bearing plate. A recess is provided in the center of the fixed column. The recess is used to anchor the pile to the ground by pulling a rope. A support plate is provided below the bearing plate by a telescopic rod. Multiple sets of limiting rings are movably hinged below the bearing plate. The pre-embedded pile is a hollow column with a grouting port at its top and an annular recess at its upper end. The annular recess is used for the limiting rings to be clamped by a clamping limiting structure. A clamping opening is provided at the bottom of the pre-embedded pile, and an elastic membrane is provided at the clamping opening.

[0006] Preferably, the recess at the center of the fixing column is a circular recess or a square recess.

[0007] Preferably, the pressurized grouting device includes a grouting pump and a grouting pipeline. One end of the grouting pipeline is connected to the grouting pump, and the other end can be connected to the grouting port at the top of the pre-embedded pile.

[0008] Preferably, the thickness of the central region of the elastic membrane is less than that of the surrounding region, and the elastic modulus of the central material is lower than that of the surrounding material, so that the elastic membrane can expand uniformly to the outside and fit against the periphery of the precast pile when the pre-embedded pile is injected by the pressurized grouting device.

[0009] Preferably, the elastic membrane is made of a rubber-based composite material, wherein the central region is a thin layer of natural rubber or silicone rubber with added plasticizer.

[0010] By employing the above technical solution, this utility model provides a pressure-type pre-embedded pile, which has at least the following beneficial effects:

[0011] 1. This pressurized pre-embedded pile, through the action of a pressurized grouting device, fills the precast pile with concrete grout and then pressurizes it, causing the concrete grout to drive the elastic membrane at the clamping opening to extend outward. When the pressure inside the precast pile exceeds the bearing limit of the elastic membrane, the protruding flat disc-shaped elastic membrane ruptures, and the concrete grout flows into the soil, subsequently forming a disc-shaped structure on the outside of the precast pile, thereby increasing the contact area with the soil, reducing the load, and thus ensuring the stability of the precast pile.

[0012] 2. This pressurized pre-embedded pile can be combined by forming multiple sets of precast piles, which can fuse their outwardly protruding slow-setting soil discs to jointly construct a flat disc structure. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

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

[0015] Figure 2 This is a schematic diagram of the pre-embedded pile of this utility model.

[0016] Figure label:

[0017] 1. Bearing plate; 2. Fixed column; 3. Pressurized grouting device; 4. Embedded pile; 5. Grouting pipeline; 6. Limiting ring; 7. Telescopic rod; 8. Support plate; 9. Grouting port; 10. Clamping port; 11. Elastic membrane. Detailed Implementation

[0018] 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.

[0019] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a pressure-type pre-embedded pile.

[0020] Example 1:

[0021] Combination Figure 1 and Figure 2 As shown, the present invention provides a pressure-type pre-embedded pile 4, which includes a bearing plate 1 and a pre-embedded pile 4;

[0022] A pressurized grouting device 3 is installed above the bearing plate 1. Fixed columns 2 are installed at the four corners of the bearing plate 1. The center of the fixed column 2 has a recess for anchoring to the ground by pulling ropes. A support plate 8 is installed below the bearing plate 1 by means of a telescopic rod 7. The telescopic rod 7 is electrically driven and can flexibly adjust the support height to adapt to different ground flatness. The support plate 8 increases the contact area with the ground, which can disperse the pressure of the bearing plate 1 and the embedded pile 4, and prevent the bearing plate 1 from sinking due to soft soil. It provides a stable support foundation for the bearing plate 1. Combined with the rope anchoring, it further improves the deformation resistance of the overall structure. Multiple sets of limiting rings 6 are installed at the movable hinge below the bearing plate 1. The bearing plate 1 is fixed to the ground by pulling ropes, which can limit the horizontal or vertical displacement of the bearing plate 1 and indirectly restrain the swaying of the embedded pile 4. Especially in soft soil, it can effectively prevent the embedded pile 4 from tilting or shifting due to force or grouting impact, and enhance the stability of the overall structure.

[0023] The embedded pile 4 is a hollow column with a grouting port 9 at its top and an annular recess at the top. The annular recess allows the limiting ring 6 to be clamped by the clamping and limiting structure. The hollow column provides a space for the concrete slurry to be filled. The grouting port 9 serves as a grouting channel and can be precisely connected to the pressurized grouting device 3 to ensure that the concrete slurry is efficiently injected into the embedded pile 4, providing a material foundation for the subsequent pressurization to form a disc-shaped structure.

[0024] The bottom of the pre-embedded pile 4 is provided with a clamping opening 10, and an elastic membrane 11 is provided at the clamping opening 10. By replacing different elastic membranes 11, the size of the final concrete disc can be changed, thereby enhancing the stability of the precast pile.

[0025] Specifically, the depression at the center of the fixed column 2 is either a circular or square depression.

[0026] Furthermore, the pressurized grouting device 3 includes a grouting pump and a grouting pipeline 5. One end of the grouting pipeline 5 is connected to the grouting pump, and the other end can be connected to the grouting port 9 at the top of the pre-embedded pile 4.

[0027] As can be seen from the embodiment, concrete grout can be injected into the pre-embedded pile 4 and pressure can be applied to provide power for the concrete grout to break through the elastic membrane 11 at the bottom of the pre-embedded pile 4, flow out into the soil and form a disc-shaped structure, ensuring that the grouting process is controllable and the pressure is sufficient, which is to achieve "strengthening stability through the disc-shaped structure".

[0028] Example 2:

[0029] Combination Figure 2As shown, based on Embodiment 1, the thickness of the central region of the elastic membrane 11 is less than that of the surrounding region, and the elastic modulus of the central material is lower than that of the surrounding material. This allows the elastic membrane 11 to expand uniformly outward and adhere to the periphery of the precast pile when the pre-embedded pile 4 is grouted by the pressurized grouting device 3. The smaller thickness makes the central part more susceptible to deformation under stress, and the lower elastic modulus (i.e., more easily stretched) further enhances the expandability of the central part. The combination of these two factors can guide the elastic membrane 11 to expand uniformly outward from the central part under the grouting pressure, avoiding non-uniform rupture or expansion deviation caused by local stress concentration, ensuring that the expansion process is stable and controllable, and ultimately achieving a tight fit with the periphery of the precast pile.

[0030] Specifically, the elastic membrane 11 is made of rubber-based composite material. Utilizing its high elasticity, aging resistance and soil environment adaptability, it ensures that the elastic membrane 11 can stably withstand grouting pressure and soil friction in the underground environment. The central area is made of thin natural rubber or silicone rubber with added plasticizer, which can ensure that the elastic membrane 11 expands and ruptures as expected under the predetermined pressure, avoiding premature damage or excessive pressure resistance.

[0031] As can be seen from the above embodiments: the multiple sets of limiting rings 6, which are movably hinged below the bearing plate 1, use their clamping and limiting structures to cooperate with the annular recess at the upper end of the pre-embedded pile 4 to clamp the top of the pre-embedded pile 4. Then, the ropes are pulled to the ground and anchored by the recesses in the center of the four corner fixing columns 2 of the bearing plate 1. At the same time, the support plate 8 connected to the bearing plate 1 by the telescopic rod 7 is adjusted to make it contact the ground to form support and ensure the initial stability of the pre-embedded pile 4. Then, the pressure grouting device 3 above the bearing plate 1 is operated to inject concrete grout into the hollow column through the grouting port 9 at the top of the pre-embedded pile 4. The concrete slurry is filled into the pre-embedded pile 4 until it is full. Then, pressure is continued to be applied so that the concrete slurry acts on the elastic membrane 11 at the bottom clamping opening 10 of the pre-embedded pile 4 and extends it outward. When the pressure exceeds the limit of the elastic membrane 11, the elastic membrane 11 ruptures and the concrete slurry flows out into the surrounding soil. After the concrete slurry solidifies, a disc-shaped structure is formed on the outside of the pre-embedded pile 4. If multiple sets of precast piles are used in combination, the outward protruding concrete discs are merged to form a common flat disc-shaped structure. During this process, different elastic membranes 11 can be replaced as needed to adjust the size of the concrete disc, and finally the installation of the precast pile is completed.

[0032] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] 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 pressure-type pre-embedded pile, characterized in that: It includes a bearing plate (1) and a pre-embedded pile (4); a pressure grouting device (3) is provided above the bearing plate (1), and fixed columns (2) are provided at the four corners of the bearing plate (1). The fixed columns (2) have a recess in the center, which is used to anchor to the ground by pulling a rope. A support plate (8) is provided below the bearing plate (1) through a telescopic rod (7), and multiple sets of limiting rings (6) are movably hinged below the bearing plate (1). The pre-embedded pile (4) is a hollow column with a grouting port (9) at its top and an annular depression at its upper end. The annular depression is used for the limiting ring (6) to be clamped by the clamping limiting structure. The pre-embedded pile (4) has a clamping opening (10) at the bottom, and an elastic membrane (11) is provided at the clamping opening (10).

2. The pressure-type pre-embedded pile according to claim 1, characterized in that: The depression at the center of the fixed column (2) is either a circular depression or a square depression.

3. The pressure-type pre-embedded pile according to claim 1, characterized in that: The pressurized grouting device (3) includes a grouting pump and a grouting pipeline (5). One end of the grouting pipeline (5) is connected to the grouting pump, and the other end can be connected to the grouting port (9) at the top of the pre-embedded pile (4).

4. The pressure-type pre-embedded pile according to claim 1, characterized in that: The thickness of the central region of the elastic membrane (11) is less than that of the surrounding region, and the elastic modulus of the central material is lower than that of the surrounding material, so that the elastic membrane (11) can expand outward and fit against the periphery of the precast pile when the pre-embedded pile (4) is injected by the pressurized grouting device (3).

5. The pressure-type pre-embedded pile according to claim 4, characterized in that: The elastic membrane (11) is made of rubber-based composite material, wherein the central region is a thin layer of natural rubber or silicone rubber with added plasticizer.

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