Building foundation pile

Abstract

The utility model provides a building foundation pile which comprises a plurality of vertical plates, the vertical plates are distributed at equal angles, one side edge of each vertical plate abuts against the adjacent side wall to form a grouting cavity with the polygonal middle, the vertical plates are provided with leakage holes, the leakage holes communicate with the grouting cavity, and the leakage holes are communicated with the grouting cavity. The upper end of the pile body composed of the multiple vertical plates is fixedly connected with a fixing plate, a grouting hole is formed in the middle of the fixing plate and communicates with the grouting cavity, the lower end of the fixing plate is fixedly connected with a corrosion protection structure, and the corrosion protection structure comprises a magnesium block electrically connected with the fixing plate. The pile body is composed of the multiple plates, compared with an existing cylindrical foundation pile, the foundation pile is easier to install by a pile driver, meanwhile, a corrosion protection structure is arranged, and the service life of the foundation pile is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of foundation piles, and in particular to a building foundation pile. Background Art

[0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile (referred to as the cap) or a single pile foundation connected by a column and a foundation pile is referred to as a foundation pile. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile. Building foundation piles are usually low cap pile foundations. In high-rise buildings, foundation piles are widely used.

[0003] Prefabricated foundation piles are usually installed underground using a pile driver. Most existing foundation piles are cylindrical and driven into the ground using a pile driver. Although the lower end of the foundation pile is conical, its cross-section is a closed circle, so during the impact installation, the operation requirements of the pile driver are relatively high. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a building foundation pile, comprising a plurality of vertical plates, the plurality of vertical plates are distributed at equal angles, and one side of the vertical plates is placed on an adjacent side wall to form a grouting chamber with a polygonal center, and a leakage hole is provided on the vertical plate, and the leakage hole is connected to the grouting chamber. Compared with the existing cylindrical foundation piles, the foundation pile has a smaller cross-sectional area and is easier to drive into the ground. At the same time, a grouting chamber is provided in the middle, and cement slurry can be injected into the base through the leakage hole, thereby improving the support stability of the foundation pile.

[0005] The upper end of the pile body composed of a plurality of vertical plates is fixedly connected to a fixed plate, a grouting hole is arranged in the middle of the fixed plate, and the grouting hole is connected to the grouting chamber, and the lower end of the fixed plate is fixedly connected to a corrosion protection structure, and the corrosion protection structure includes a magnesium block electrically connected to the fixed plate. In this solution, a steel structure is used to form the foundation pile, and a sacrificial anode is used to protect the cathode to increase the life of the foundation pile.

[0006] Preferably, a chamfer is provided on one side of the lower end of the vertical plate, and the chamfer is away from the grouting chamber. This arrangement makes the lower part of the foundation pile sharper, which is conducive to the installation of the foundation pile by a pile driver.

[0007] Preferably, a connecting plate is provided between adjacent vertical plates, and both ends of the connecting plate are respectively fixed to the side walls of adjacent vertical plates. The connecting plate is provided, and the connecting plate and the vertical plates form a triangular profile, which is used to improve the structural strength of the pile body.

[0008] Preferably, the fixing plate is provided with a plurality of connecting columns at equal angles, the connecting columns penetrate the fixing plate from top to bottom, and the middle of the connecting columns is provided with threaded holes. The connecting columns and the threaded holes provided in the middle thereof are used to connect the foundation piles with the structure above the ground after they are driven into the ground and fixed.

[0009] Preferably, the middle part of the connecting column is threadedly connected with a first bolt. The first bolt is pre-assembled on the connecting column to prevent dirt, sand and stones from getting stuck in the threaded hole during transportation and installation, thereby affecting the connection.

[0010] Preferably, the corrosion protection structure comprises a shell, a groove is provided in the middle of the shell, and the magnesium block is embedded in the groove, that is, the shell is used to store the magnesium block.

[0011] Preferably, both ends of the shell are provided with through holes, the through holes are sleeved on the connecting column, the end of the shell is threadedly connected with a second bolt, and the end of the second bolt abuts against the connecting column. The connecting column inserted up and down can facilitate the installation of the shell, and by tightening the second bolt, the end of the second bolt tightly abuts against the side wall of the connecting column, so that the shell is fixed.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The pile body is composed of several plates. Compared with the existing cylindrical foundation piles with a tapered lower end, the cross-sectional area of ​​the present invention is smaller, which reduces the difficulty of the pile driver's operation.

[0014] 2. The present invention is provided with a grouting chamber, a grouting hole and a leakage hole, and cement slurry can be injected into the interior of the foundation pile, and the cement slurry can enter the stratum. After the cement slurry solidifies, the compressive and tensile strengths of the foundation pile are greatly improved.

[0015] 3. A magnesium block is provided, that is, a sacrificial anode is used to protect the cathode, which can increase the life of the foundation pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the upper end structure of the pile body of the present invention;

[0018] Figure 3 is a bottom schematic diagram of a fixing plate of the present invention;

[0019] Figure 4 It is a schematic diagram of the corrosion protection structure of the present invention.

[0020] List of reference numerals:

[0021] 1. Chamfered right angle; 2. Vertical plate; 3. Connecting plate; 4. Leakage hole; 5. Fixed plate; 6. Grouting hole; 7. First bolt; 8. Grouting chamber; 9. Connecting column; 10. Corrosion protection structure;

[0022] 101. second bolt; 102. housing; 103. magnesium block; 104. through hole. DETAILED DESCRIPTION

[0023] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] like Figures 1 to 4 As shown, a building foundation pile includes a plurality of vertical plates 2, the vertical plates 2 are made of steel plates, and the plurality of vertical plates 2 are distributed at equal angles, that is, each vertical plate 2 is arranged at equal angles around the same axis, and one side of the vertical plate 2 rests on the adjacent side wall. Figure 2 As shown in the structure, a grouting chamber 8 with a polygonal middle portion is formed. For example, in the figure, three vertical plates 2 are used, and the cross-sectional shape of the grouting chamber 8 enclosed is a triangle. By controlling the size of the triangle, the width of the vertical plates 2 and the number of the vertical plates 2, the structural strength of the entire structure can be adjusted. The vertical plates 2 are provided with leakage holes 4, and the leakage holes 4 are connected to the grouting chamber 8. The grouting chamber 8 is used to inject cement slurry, and the cement slurry can flow out of the leakage holes 4 and enter the soil layer to fill the gaps, thereby increasing the contact surface with the soil layer and improving the stability of the installation.

[0025] Furthermore, most of the traditional foundation piles are cylindrical and have a conical structure at the lower end. Compared with this solution, the existing cylindrical foundation piles have a larger cross-sectional area, and the pile driver is difficult to operate. At the same time, the existing cylindrical foundation piles only have a circumferential surface in contact with the soil layer, and the contact surface is small, and the pull-out resistance is not as strong as that of this solution.

[0026] The upper end of the pile body composed of multiple vertical plates 2 is fixedly connected to a fixed plate 5, the fixed plate 5 is circular, a grouting hole 6 is provided in the middle of the fixed plate 5, and the grouting hole 6 is connected to the grouting chamber 8, and cement slurry is injected into the grouting chamber 8 through the grouting hole 6, and the lower end of the fixed plate 5 is fixedly connected to a corrosion protection structure 10, the corrosion protection structure 10 includes a magnesium block 103 electrically connected to the fixed plate 5. Since this solution adopts a steel structure, although it is buried underground to block most of the oxygen, there is still a risk of corrosion, so a sacrificial anode is used to protect the cathode to increase the service life of the pile.

[0027] A chamfered right angle 1 is provided on one side of the lower end of the vertical plate 2, and the chamfered right angle 1 is far away from the grouting chamber 8. Since the lower end of the pile body formed by the vertical plates 2 is in a cone structure, the pile body is easier to be driven into the ground.

[0028] A connecting plate 3 is provided between adjacent vertical plates 2, and both ends of the connecting plate 3 are respectively fixed to the side walls of the adjacent vertical plates 2. The connecting plate 3 is used to improve the structural strength of the pile body, and the triangle formed between the connecting plate 3 and the vertical plates 2 makes the pile body structure more stable.

[0029] A plurality of connecting columns 9 are arranged at equal angles on the fixing plate 5. The connecting columns 9 penetrate the fixing plate 5 from top to bottom. A threaded hole is arranged in the middle of the connecting column 9 for connecting relevant threaded connectors to realize the fixed connection between the foundation pile and the upper structure. Furthermore, when the foundation pile is installed, the pile driver directly acts on the upper end faces of all the connecting columns 9.

[0030] The middle part of the connecting column 9 is threadedly connected with a first bolt 7. That is, the first bolt 7 is pre-installed in the threaded hole to prevent soil, sand and stone from entering the threaded hole and causing blockage during the transportation and installation of the foundation pile.

[0031] Specific as Figure 4 As shown, the corrosion protection structure 10 includes a shell 102 . The shell 102 is a rectangular structure. A groove is provided in the middle of the shell 102 , and the magnesium block 103 is embedded in the groove, that is, the shell 102 is used to support the magnesium block 103 .

[0032] Through holes 104 are provided at both ends of the shell 102, and the through holes 104 are sleeved on the connecting column 9. The shell 102 is conveniently sleeved on the connecting column 9 through the through holes 104, and the end of the shell 102 is threadedly connected with a second bolt 101, and the end of the second bolt 101 abuts against the connecting column 9, that is, the second bolt 101 is tightened, and its end abuts against the connecting column 9 to fix the shell 102.

[0033] It should be noted that the specific connection method is not clearly stated above. For steel structures, they are all fixed and connected by welding or obtained by one-piece molding.

[0034] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A building foundation pile, characterized in that: It comprises a plurality of vertical plates (2), wherein the plurality of vertical plates (2) are distributed at equal angles, and one side of the vertical plates (2) rests on an adjacent side wall to form a grouting chamber (8) with a polygonal center, wherein leakage holes (4) are provided on the vertical plates (2), and the leakage holes (4) are in communication with the grouting chamber (8); A fixed plate (5) is fixedly connected to the upper end of a pile body composed of a plurality of vertical plates (2); a grouting hole (6) is provided in the middle of the fixed plate (5); and the grouting hole (6) is communicated with a grouting chamber (8); a corrosion protection structure (10) is fixedly connected to the lower end of the fixed plate (5); and the corrosion protection structure (10) comprises a magnesium block (103) electrically connected to the fixed plate (5).

2. A building foundation pile according to claim 1, characterized in that: A chamfered right angle (1) is provided on one side of the lower end of the vertical plate (2), and the chamfered right angle (1) is away from the grouting chamber (8).

3. A building foundation pile according to claim 1, characterized in that: A connecting plate (3) is provided between adjacent vertical plates (2), and two ends of the connecting plate (3) are respectively fixed to the side walls of the adjacent vertical plates (2).

4. A building foundation pile according to claim 1, characterized in that: A plurality of connecting columns (9) are arranged at equal angles on the fixing plate (5), the connecting columns (9) penetrate the fixing plate (5) from top to bottom, and a threaded hole is arranged in the middle of the connecting columns (9).

5. A building foundation pile according to claim 4, characterized in that: A first bolt (7) is threadedly connected to the middle portion of the connecting column (9).

6. A building foundation pile according to claim 4, characterized in that: The corrosion protection structure (10) comprises a shell (102), a groove is provided in the middle of the shell (102), and a magnesium block (103) is embedded in the groove.

7. A building foundation pile according to claim 6, characterized in that: Through holes (104) are provided at both ends of the shell (102), and the through holes (104) are sleeved on the connecting column (9). The end of the shell (102) is threadedly connected to a second bolt (101), and the end of the second bolt (101) abuts against the connecting column (9).

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