A prefabricated pile for soft ground treatment

Abstract

The utility model discloses a prefabricated pile for soft foundation treatment, including the outer tube, the outer tube is equipped with the anchor rod no.

Description

Technical Field

[0001] This utility model relates to the field of soft soil treatment technology, specifically a precast pile for soft soil treatment. Background Technology

[0002] Soft soil foundations are composed of highly compressible soil layers such as silt, silty soil, fill, and miscellaneous fill. Construction projects such as highways, buildings, ports, and airports face numerous challenges in soft soil treatment, requiring solutions to address their low bearing capacity and severe deformation under load. Currently, common soft soil treatment methods include: surcharge preloading, which is simple to implement but time-consuming and requires large amounts of earthwork; dynamic compaction, which is simple and fast but has a significant impact on the surrounding environment and limited treatment depth; and soil mixing piles, which are more complex but offer reliable treatment results, but are expensive and only suitable for shallow soft soils. Among these, cement jet grouting is one of the most widely used methods, but it suffers from drawbacks such as difficulty in controlling construction quality and limited treatment depth. Developing more environmentally friendly, faster, and lower-cost construction methods will be a crucial trend in soft soil treatment.

[0003] Most of the precast piles currently in use are one-piece, large and heavy. During installation, lifting equipment is needed to place the precast piles into the pre-drilled pile holes. During installation, most precast piles do not have any auxiliary structures. When the precast piles are hit from the side, they are easily squeezed against the inner wall of the pile hole, which affects the stability of grouting and causes the precast piles to tilt in the pile hole, affecting subsequent installation.

[0004] To address this issue, the present invention provides a precast pile for soft soil foundation treatment, which solves the aforementioned problems through connecting components and positioning components. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precast pile for soft soil foundation treatment, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a precast pile for soft soil treatment, comprising an outer cylinder, wherein a No. 1 anchor rod is installed inside the outer cylinder, and a sealing component is installed on the No. 1 anchor rod near its top end, wherein the sealing component ensures that the grout does not overflow during grouting; A positioning mechanism, comprising a connecting component and a positioning component, wherein the connecting component is installed inside the first anchor rod and near its bottom end, and the connecting component is used to drive the positioning component to work; the positioning component is installed on the first anchor rod and near its bottom end, and the positioning component limits the position of the first anchor rod. Anchor rod No. 2 is installed below anchor rod No. 1 through the connecting assembly. An anchor head is fixedly connected to the bottom end of anchor rod No. 2, and a through hole is opened on the anchor head.

[0007] Preferably, the connecting assembly includes a first annular groove, which is formed at the bottom end of a first anchor rod. A guide block is fixedly connected inside the first annular groove. A first annular block is fixedly connected inside the first annular groove and near its bottom end. A second annular groove is formed at the top end of a second anchor rod. The second annular groove is slidably connected to the first annular block. A second annular block is fixedly connected on the second annular groove and near its top end. The second annular block is slidably connected to the guide block.

[0008] Preferably, the positioning component includes a first fixing plate, which is fixed to a first anchor rod and close to the bottom end. A positioning rod is rotatably connected inside the first fixing plate via a fixing rod, and a square groove is provided on the positioning rod.

[0009] Preferably, a second fixing plate is fixedly connected to the second anchor rod near its top. A connecting rod is rotatably connected inside the second fixing plate via a fixing rod. The upper end of the connecting rod extends into the square groove and is rotatably connected to the positioning rod via the fixing rod.

[0010] Preferably, the sealing assembly includes a grout stop plug, which is slidably connected to a first anchor rod. A pad is fitted on the first anchor rod above the grout stop plug, and a nut is threaded onto the first anchor rod near its top.

[0011] Preferably, the outer cylinder has a straight groove, the positioning component is located inside the straight groove, and the outer cylinder has a circular groove above the straight groove.

[0012] Preferably, the top of the No. 1 anchor rod is provided with a grouting port, and the sealing assembly is located above the outer cylinder.

[0013] Beneficial effects This invention provides a precast pile for soft soil foundation treatment. Compared with the prior art, it has the following advantages: (1) The precast pile used for soft soil treatment is equipped with a connecting component and a positioning component. It is equipped with a columnar groove and an annular block to adjust the length of the anchor rod. At the same time, it is convenient to start the positioning component. The positioning rod and the connecting rod are used to contact the soft soil and limit the position of the anchor rod to ensure the stability of grouting.

[0014] (2) The precast pile used for soft soil treatment is equipped with a sealing component. The grout stop plug and nut are used to limit the grout stop plug, ensuring that the grout will not flow out through the outer cylinder during grouting and ensuring grouting efficiency. Attached Figure Description

[0015] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2This is a schematic diagram of the anchor bolt structure of this utility model; Figure 3 This is a cross-sectional view of the internal three-dimensional structure of this utility model; Figure 4 This is the utility model Figure 3 Enlarged view of point a in the middle; Figure 5 This is a schematic diagram of the positioning component structure of this utility model.

[0016] In the diagram: 1. Outer cylinder; 2. Anchor rod No. 1; 3. Anchor rod No. 2; 4. Sealing assembly; 41. Grout stop plug; 42. Gasket; 43. Nut; 5. Connecting assembly; 51. Annular groove No. 1; 52. Guide block; 53. Annular block No. 1; 54. Annular groove No. 2; 55. Annular block No. 2; 6. Positioning assembly; 61. Fixing plate No. 1; 62. Positioning rod; 63. Fixing plate No. 2; 64. Connecting rod; 65. Square groove; 7. Grouting anchor head; 8. Through hole; 9. Circular groove; 10. Straight groove. Detailed Implementation

[0017] 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.

[0018] Example 1: Please see Figure 1-5 A precast pile for soft soil treatment includes an outer cylinder 1, an anchor rod 2 is installed inside the outer cylinder 1, and a sealing component 4 is installed on the anchor rod 2 near its top. The sealing component 4 ensures that the grout does not overflow during grouting. The positioning mechanism includes a connecting component 5 and a positioning component 6. The connecting component 5 is installed inside the first anchor rod 2 and near the bottom end. The connecting component 5 is used to drive the positioning component 6 to work. The positioning component 6 is installed on the first anchor rod 2 and near the bottom end. The positioning component 6 limits the first anchor rod 2. Anchor rod 3 is installed below anchor rod 2 via the connecting assembly 5. Anchor rod 3 is fixedly connected to a grouting anchor head 7 at its bottom end. The grouting anchor head 7 has a through hole 8. An anchor rod 2 has a grouting port at its top end. The sealing assembly 4 is located above the outer cylinder 1.

[0019] Furthermore, the connecting component 5 includes a first annular groove 51, which is formed at the bottom end of the first anchor rod 2. A guide block 52 is fixedly connected inside the first annular groove 51. A first annular block 53 is fixedly connected inside the first annular groove 51 and near the bottom end. A second annular groove 54 is formed at the top end of the second anchor rod 3. The second annular groove 54 is slidably connected to the first annular block 53. A second annular block 55 is fixedly connected on the second annular groove 54 and near the top end. The second annular block 55 is slidably connected to the guide block 52.

[0020] Furthermore, the positioning component 6 includes a first fixing plate 61, which is fixed to the first anchor rod 2 near the bottom. A positioning rod 62 is rotatably connected inside the first fixing plate 61 via a fixing rod. A square groove 65 is provided on the positioning rod 62. A second fixing plate 63 is fixedly connected to the second anchor rod 3 near the top. A connecting rod 64 is rotatably connected inside the second fixing plate 63 via a fixing rod. The upper end of the connecting rod 64 extends into the square groove 65 and is rotatably connected to the positioning rod 62 via a fixing rod.

[0021] Furthermore, a straight groove 10 is provided on the outer cylinder 1, the positioning component 6 is located inside the straight groove 10, and a circular groove 9 is provided on the outer cylinder 1 above the straight groove 10.

[0022] Example 2: Please see Figure 1-3 This embodiment provides a technical solution based on embodiment one: the sealing component 4 includes a grout stop plug 41, the grout stop plug 41 is slidably connected to the first anchor rod 2, a pad 42 is sleeved on the first anchor rod 2 above the grout stop plug 41, and a nut 43 is threadedly connected on the first anchor rod 2 near the top.

[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0024] During operation, the outer cylinder 1 is first installed in the soft soil using a pile driver. Anchor rod 3 (number 2) and anchor rod 2 (number 1) are then placed inside the outer cylinder 1. The positioning component 6 is positioned relative to the straight groove 10. As the grouting anchor head 7 contacts the bottom of the soft soil opening in the outer cylinder 1, the connecting component 5 and the positioning component 6 begin to work. As anchor rod 2 (number 1) moves downwards, annular block 53 (number 1) slides inside annular groove 54 (number 2), and annular block 53 (number 2) slides on guide block 52. This allows the positioning component 6 to operate normally due to the weight of anchor rod 3 (number 2). The force causes the positioning component 6 to be in a contracted state. As the second anchor rod 2 moves down, the distance between the first fixing plate 61 and the second fixing plate 63 decreases, so that the connecting rod 64 supports the positioning rod 62 through the fixing rod and the square groove 65. The positioning rod 62 passes through the straight groove 10 and contacts the soft foundation. Since the positioning rod 62 exerts the same pressure on the soft foundation, the second anchor rod 3 and the first anchor rod 2 are located at the center inside the outer cylinder 1, preventing the anchor rod from being squeezed. At the same time, it ensures that the anchor rod is in a state perpendicular to the bottom, which facilitates subsequent grouting. Before grouting, the sealing assembly 4 is activated. The grout stop plug 41 and the pad 42 are placed on the anchor rod. The nut 43 is rotated to press down the pad 42, so that the grout stop plug 41 seals the top of the outer cylinder 1 to prevent overflow during grouting. Grouting is carried out through the top of the No. 1 anchor rod 2. The grout flows out through the through hole 8 on the grouting anchor head 7 and then fills the space between the outer cylinder 1 and the soft foundation through the circular groove 9 and the straight groove 10.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0026] 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 precast pile for soft soil foundation treatment, comprising an outer cylinder (1), characterized in that: An anchor rod (2) is installed inside the outer cylinder (1). A sealing component (4) is installed on the anchor rod (2) and near the top. The sealing component (4) ensures that the grout will not overflow during grouting. The positioning mechanism includes a connecting component (5) and a positioning component (6). The connecting component (5) is installed inside the first anchor rod (2) and near the bottom end. The connecting component (5) is used to drive the positioning component (6) to work. The positioning component (6) is installed on the first anchor rod (2) and near the bottom end. The positioning component (6) limits the first anchor rod (2). The second anchor rod (3) is installed below the first anchor rod (2) through the connecting assembly (5). The bottom end of the second anchor rod (3) is fixedly connected to a grouting anchor head (7), and a through hole (8) is opened on the grouting anchor head (7).

2. A precast pile for soft soil foundation treatment according to claim 1, characterized in that: The connecting component (5) includes a first annular groove (51), which is opened at the bottom end of the first anchor rod (2). A guide block (52) is fixedly connected inside the first annular groove (51). A first annular block (53) is fixedly connected inside the first annular groove (51) and near the bottom end. A second annular groove (54) is opened at the top end of the second anchor rod (3). The second annular groove (54) is slidably connected to the first annular block (53). A second annular block (55) is fixedly connected on the second annular groove (54) and near the top end. The second annular block (55) is slidably connected to the guide block (52).

3. A precast pile for soft soil foundation treatment according to claim 1, characterized in that: The positioning component (6) includes a first fixing plate (61), which is fixed on the first anchor rod (2) and close to the bottom. The first fixing plate (61) is rotatably connected to a positioning rod (62) through a fixing rod. The positioning rod (62) has a square groove (65) on it.

4. A precast pile for soft soil foundation treatment according to claim 3, characterized in that: A second fixing plate (63) is fixedly connected to the second anchor rod (3) near its top. A connecting rod (64) is rotatably connected inside the second fixing plate (63) through a fixing rod. The upper end of the connecting rod (64) extends into the square groove (65) and is rotatably connected to the positioning rod (62) through a fixing rod.

5. A precast pile for soft soil foundation treatment according to claim 1, characterized in that: The sealing assembly (4) includes a grout stop plug (41), which is slidably connected to the No. 1 anchor rod (2). A pad (42) is fitted on the No. 1 anchor rod (2) above the grout stop plug (41), and a nut (43) is threaded on the No. 1 anchor rod (2) near the top.

6. A precast pile for soft soil foundation treatment according to claim 1, characterized in that: The outer cylinder (1) has a straight groove (10) and the positioning component (6) is located inside the straight groove (10). The outer cylinder (1) has a circular groove (9) above the straight groove (10).

7. A precast pile for soft soil foundation treatment according to claim 1, characterized in that: The top of the No. 1 anchor rod (2) is provided with a grouting port, and the sealing component (4) is located above the outer cylinder (1).

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