Grouting type hollow concrete precast pile with spiral holes

Abstract

The utility model relates to the technical field of building construction, in particular to a grouting type hollow concrete precast pile with spiral holes, which comprises a pile body, and a pile tip is arranged at the end of the pile body. A reserved center hole is formed in the pile core end in the pile body, a plurality of sets of through holes are evenly formed in the pile body, the through holes communicate with the reserved center hole, hole sleeves are embedded in the through holes, and grouting pipes communicating with the reserved center hole are inserted in the hole sleeves. Firstly, the pile body is prefabricated, the pile tip of the pile body faces the ground, after the prefabricated pile is driven into the ground, grouting is conducted through the reserved center hole, grout in the reserved center hole flows to surrounding soil or sandy soil through the grouting pipe arranged in the hole sleeve, the rooting effect is achieved, and then the friction force and bonding force between the prefabricated pile and the soil can be increased; therefore, pile length can be reduced, and pile cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a hollow concrete prefabricated pile with a spiral hole and grouting. Background Art

[0002] At present, the quality of solid concrete precast piles is average, and they are easy to break or fail to achieve their functions during use. With the improvement of technology, the construction industry has higher and higher requirements for the quality and function of precast piles. The existing solid concrete precast piles have complex structures. Although they can achieve their functions, they are not safe and stable and have low bearing capacity. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a hollow concrete precast pile with spiral holes and grouting.

[0004] The utility model provides a grouting type hollow concrete prefabricated pile with a spiral hole, comprising a pile body, and a pile tip is arranged at the end of the pile body;

[0005] A reserved center hole is provided at the pile core end in the pile body, wherein a plurality of through holes are evenly provided on the pile body, the through holes are connected with the reserved center hole, a hole sleeve is embedded in the through hole, and a grouting pipe connected with the reserved center hole is inserted in the hole sleeve.

[0006] Preferably, the pile tip is configured as a conical structure.

[0007] Preferably, the hole sleeve is made of steel structure.

[0008] Preferably, each group of through holes is arranged in a spiral shape on the pile body.

[0009] Preferably, the distance between the two hole sleeves is less than one quarter of the circumference of the pile body.

[0010] Preferably, a reinforced annular edge is provided at one end of the pile body away from the pile tip, wherein the end of the reinforced annular edge away from the pile body is connected to the positioning plate through an elastic mechanism, and a circular groove is provided at the central end of the positioning plate.

[0011] Preferably, the elastic mechanism includes positioning holes arranged in a circumferential array on the reinforced annular edge, a positioning rod is slidably inserted in the positioning hole, and the other end of the positioning rod is fixed to the positioning plate, wherein a limit seat is fixedly arranged at one end of the positioning rod away from the positioning plate, and a return spring is provided on the positioning rod, one end of the return spring is fixed to the positioning plate, and the other end is fixed to the reinforced annular edge.

[0012] Preferably, two groups of first lifting ears are symmetrically fixedly arranged on the pile body, and two groups of second lifting ears are symmetrically fixedly arranged on the positioning plate.

[0013] Compared with the related art, the hollow concrete precast pile with spiral hole and grouting provided by the utility model has the following beneficial effects:

[0014] The utility model provides a hollow concrete precast pile with a spiral hole and grouting. First, the pile body is precast, and the pile tip is directed toward the ground. After the precast pile is driven into the ground, grouting is performed through a reserved center hole. The slurry in the reserved center hole flows to the surrounding soil or sand through a grouting pipe arranged in a hole sleeve, which has a rooting effect, thereby increasing the friction and bonding force between the precast pile and the soil, thus reducing the pile length and saving the pile cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a hollow concrete precast pile with spiral holes and grouting provided by the utility model;

[0016] Figure 2 for Figure 1 The schematic diagram of the structure of a hollow concrete precast pile with spiral holes and grouting is shown;

[0017] Figure 3 for Figure 1 The schematic diagram of the structure of a reserved center hole in a hollow concrete precast pile with a spiral hole and grouting is shown.

[0018] Numbers in the figure: 1, pile body; 2, reinforced annular edge; 3, positioning plate; 101, through hole; 102, pile tip; 103, hole sleeve; 104, first lifting ear; 105, reserved center hole; 201, circular groove; 301, second lifting ear; 302, positioning rod; 303, reset spring; 304, limit seat. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0021] Example 1

[0022] See also Figure 1 to Figure 2 The utility model provides a precast hollow concrete pile with spiral holes and grouting, comprising a pile body 1, and a pile tip 102 is provided at the end of the pile body 1; in one implementation of the present embodiment, the pile body 1 is configured as a cylindrical structure, and the pile tip 102 is configured as a conical structure;

[0023] A reserved center hole 105 is provided at the pile core end in the pile body 1, wherein a plurality of groups of through holes 101 are evenly provided on the pile body 1, the through holes 101 are connected to the reserved center hole 105, a hole sleeve 103 is embedded in the through hole 101, and a grouting pipe connected to the reserved center hole 105 is inserted in the hole sleeve 103; specifically, in the present embodiment, the hole sleeve 103 is made of a steel structure, and in addition, the spacing between the two hole sleeves 103 is less than a quarter of the circumference of the pile body 1;

[0024] It can be explained that the pile body 1 is first prefabricated, and the pile tip 102 of the pile body is facing the ground. After the prefabricated pile is driven into the ground, grouting is performed through the reserved center hole 105. The slurry in the reserved center hole 105 flows to the surrounding soil or sand through the grouting pipe arranged in the hole sleeve 103, which has a rooting effect, thereby increasing the friction and adhesion between the prefabricated pile and the soil, which can reduce the pile length and save pile costs.

[0025] Example 2

[0026] See also Figure 3 On the basis of Example 1, each group of through holes 101 is arranged in a spiral shape on the pile body 1; it can be explained that by arranging the through holes 101 in a spiral shape, slurry can be transported from all angles of the pile body 1, further improving the tightness of the connection between the pile body 1 and the surrounding soil or sand.

[0027] As a further solution of this embodiment, a reinforcing annular edge 2 is provided at one end of the pile body 1 away from the pile tip 102, wherein the end of the reinforcing annular edge 2 away from the pile body 1 is connected to the positioning plate 3 via an elastic mechanism, and a circular groove 201 is provided at the center end of the positioning plate 3; it can be explained that in this embodiment, by arranging an elastic mechanism between the positioning plate 3 and the reinforcing annular edge 2, the elastic mechanism can achieve a shock-absorbing effect during the process of driving the prefabricated pile into the ground.

[0028] Furthermore, the elastic mechanism includes positioning holes arranged in a circumferential array on the reinforced annular edge 2, and a positioning rod 302 is slidably inserted in the positioning hole, and the other end of the positioning rod 302 is fixed to the positioning plate 3, wherein a limit seat 304 is fixedly arranged at one end of the positioning rod 302 away from the positioning plate 3, and a return spring 303 is provided on the positioning rod 302, one end of the return spring 303 is fixed to the positioning plate 3, and the other end is fixed to the reinforced annular edge 2; it can be explained that in the process of driving the pile body 1 into the ground, the positioning plate 3 first drives the positioning rod 302 to slide in the through hole 101, and in the process of sliding, the return spring 303 is simultaneously compressed to generate elastic force, thereby achieving a buffering effect, thereby preventing the positioning plate 3 from causing damage to the reinforced annular edge 2.

[0029] In addition, two groups of first lifting ears 104 are symmetrically fixedly arranged on the pile body 1, and two groups of second lifting ears 301 are symmetrically fixedly arranged on the positioning plate 3, so as to facilitate the lifting of the prefabricated pile by a lifting device.

[0030] The working principle of a hollow concrete precast pile with a spiral hole and grouting provided by the utility model is as follows: first, the pile body 1 is precast, and the pile tip 102 of the pile body is facing the ground. After the precast pile is driven into the ground, grouting is performed through the reserved center hole 105. The slurry in the reserved center hole 105 flows to the surrounding soil or sand through the grouting pipe arranged in the hole sleeve 103, which has a rooting effect. In the process of driving the pile body 1 into the ground, the positioning plate 3 first drives the positioning rod 302 to slide in the through hole 101, and during the sliding process, the reset spring 303 is simultaneously compressed to generate elastic force, thereby achieving a buffering effect.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A hollow concrete prefabricated pile with a spiral hole and grouting, comprising a pile body (1), wherein a pile tip (102) is provided at the end of the pile body (1); It is characterized in that A reserved center hole (105) is provided at the pile core end in the pile body (1), wherein a plurality of groups of through holes (101) are evenly provided on the pile body (1), the through holes (101) are connected to the reserved center hole (105), a hole sleeve (103) is embedded in the through hole (101), and a grouting pipe connected to the reserved center hole (105) is inserted in the hole sleeve (103).

2. The hollow concrete precast pile with spiral holes and grouting according to claim 1 is characterized in that: The pile tip (102) is configured as a conical structure.

3. The hollow concrete precast pile with spiral holes and grouting according to claim 1 is characterized in that: The hole sleeve (103) is made of steel structure.

4. The hollow concrete precast pile with spiral holes and grouting according to claim 1 is characterized in that: Each group of through holes (101) is arranged in a spiral shape on the pile body (1).

5. The hollow concrete precast pile with spiral holes and grouting according to claim 4 is characterized in that: The distance between the two hole sleeves (103) is less than one quarter of the circumference of the pile body (1).

6. The hollow concrete precast pile with spiral holes and grouting according to claim 1, characterized in that: A reinforcing annular edge (2) is provided at one end of the pile body (1) away from the pile tip (102), wherein the end of the reinforcing annular edge (2) away from the pile body (1) is connected to a positioning plate (3) via an elastic mechanism, and a circular groove (201) is provided at the central end of the positioning plate (3).

7. The hollow concrete precast pile with spiral holes and grouting according to claim 1 is characterized in that: The elastic mechanism comprises positioning holes arranged in a circumferential array on the reinforced annular edge (2), wherein a positioning rod (302) is slidably inserted in the positioning hole, and the other end of the positioning rod (302) is fixed to the positioning plate (3), wherein a limiting seat (304) is fixedly arranged at one end of the positioning rod (302) away from the positioning plate (3), and a return spring (303) is provided on the positioning rod (302), and one end of the return spring (303) is fixed to the positioning plate (3), and the other end is fixed to the reinforced annular edge (2).

8. The hollow concrete precast pile with spiral holes and grouting according to claim 1, characterized in that: Two groups of first lifting ears (104) are symmetrically fixedly arranged on the pile body (1), and two groups of second lifting ears (301) are symmetrically fixedly arranged on the positioning plate (3).

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