Anti-loosening prefabricated combined concrete pile
By using a symmetrically interlocking precast interlocking block and side reinforcement plate design, combined with an inner precast groove and embedded steel bars, the problem of loosening of concrete-soil pile connections was solved, achieving high stability and integrity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUQIAN HUAMEI NEW MATERIALS CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-14
AI Technical Summary
Existing concrete-soil piles are prone to separation during assembly, with low connection strength and poor stability.
The design employs symmetrically interlocking prefabricated interlocking blocks and detachable side reinforcement plates, combined with internal prefabricated grooves and embedded steel bars, to achieve fixation through interlocking and grouting.
It improves the assembly stability and reliability of concrete-soil piles, prevents loosening, reduces the risk of grout leakage, and ensures good overall structural integrity.
Smart Images

Figure CN224119541U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete soil pile technology, specifically to a precast composite concrete pile that is resistant to loosening. Background Technology
[0002] Prestressed concrete soil piles refer to prestressed concrete piles with a circular cross-section formed using centrifugal and prestressing processes. They are prefabricated in a precast component processing plant, cured to the design strength, transported to the construction site, driven into the soil using a pile driver, and then the foundation beam (slab) is poured on top of the pile.
[0003] In the assembly of existing concrete-soil piles, most of them are assembled and connected by side clamping. However, the joint plane of the soil pile is prone to separation and cracking, resulting in low assembly strength and poor stability.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a precast composite concrete pile with anti-loosening properties in order to achieve a more practical value. Utility Model Content
[0005] The purpose of this invention is to provide a precast composite concrete pile that is resistant to loosening, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast composite concrete pile with anti-loosening features, comprising a soil pile body and precast interlocking blocks. An inner precast groove is formed through the center of the soil pile body, and precast reinforcing bars are horizontally arranged at the upper and lower ends of the inner precast groove. Precast interlocking blocks are symmetrically arranged at the upper and lower ends of the soil pile body. Reinforcing bars are arranged around the interior of the soil pile body, and multiple sets of reinforcing bars are fitted with circular stirrups on their outer sides. A side opening groove is formed on the outer side of the outer ring of the precast interlocking block, and a side reinforcing plate is engaged in the inner cavity of the side opening groove.
[0007] Furthermore, the side reinforcement plate can be set as a semi-circular arc plate, and the two sets of side reinforcement plates are connected and fixed by electric welding.
[0008] Furthermore, the soil pile body is fitted with another set of adjacent soil pile bodies through prefabricated interlocking blocks, and the prefabricated interlocking blocks are interlocked with each other.
[0009] Furthermore, the pre-embedded steel bars are symmetrically pre-embedded at both ends of the soil pile body, and grouting operations can be carried out in the inner prefabricated groove, where the grout and the pre-embedded steel bars solidify and take shape.
[0010] Furthermore, the prefabricated interlocking block forms a nested structure between the side opening groove and the side reinforcing plate, and the dimensions of the side opening groove and the side reinforcing plate are mutually matched.
[0011] Furthermore, the side reinforcement plate may be provided with a detachable arc plate, and the two sets of arc plates are combined to form a circular plate structure.
[0012] This utility model provides a precast composite concrete pile that prevents loosening, which has the following beneficial effects:
[0013] 1. In this utility model, the upper and lower parts of the concrete-soil pile are assembled in a symmetrical interlocking manner. Prefabricated interlocking blocks are symmetrically arranged at both ends to interlock the concrete-soil piles. The two sets of prefabricated interlocking blocks at each end interlock to form a circular structure. A detachable side reinforcement plate is used to lock the side reinforcement plate into the side opening groove of the prefabricated interlocking block, thereby locking and fixing the adjacent prefabricated interlocking blocks and realizing the assembly and fixing of the concrete-soil pile.
[0014] The soil pile body has an internal prefabricated groove, which can be used for grouting after assembly. The assembly method of the prefabricated interlocking blocks ensures that the connection ends fit tightly and the grout is not prone to side leakage. The grout solidifies and forms inside the internal prefabricated groove. With the help of the transverse embedded steel bars, the grout and the soil pile body solidify and form a whole, resulting in high reliability and stability of the entire structure. Attached Figure Description
[0015] The disclosure of this utility model will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. In the drawings:
[0016] Figure 1 This is a three-dimensional structural diagram of a precast composite concrete pile with anti-loosening feature according to the present invention.
[0017] Figure 2 This is a top view of the internal structure of a precast composite concrete pile designed to prevent loosening, according to this utility model.
[0018] Figure 3 This is an enlarged structural diagram of the soil pile connection of a precast composite concrete pile with anti-loosening feature according to this utility model.
[0019] In the diagram: 1. Soil pile body; 2. Inner precast groove; 3. Embedded steel bars; 4. Precast interlocking block; 5. Reinforcing steel bars; 6. Side reinforcing plate; 7. Side opening groove. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-3 This utility model provides a technical solution: a precast composite concrete pile with anti-loosening features, comprising a soil pile body 1 and precast interlocking blocks 4. An inner precast groove 2 is formed through the center of the soil pile body 1. Precast reinforcing bars 3 are horizontally arranged at the upper and lower ends of the inner precast groove 2. Precast interlocking blocks 4 are symmetrically arranged at the upper and lower ends of the soil pile body 1. Reinforcing bars 5 are arranged around the interior perimeter of the soil pile body 1, and multiple sets of reinforcing bars 5 are fitted with circular stirrups on their outer sides. A side opening groove 7 is formed on the outer edge of the precast interlocking block 4, and a side reinforcing plate 6 is fitted into the inner cavity of the side opening groove 7. The side reinforcing plate 6 can be configured as... The semi-circular arc plate and two sets of side reinforcement plates 6 are connected and fixed by electric welding; the soil pile body 1 is fitted with another set of adjacent soil pile bodies 1 through prefabricated interlocking blocks 4, and the prefabricated interlocking blocks 4 are interlocked with each other; the pre-embedded steel bars 3 are symmetrically embedded at both ends of the soil pile body 1, and grouting can be carried out in the inner prefabricated groove 2, and the grout and the pre-embedded steel bars 3 solidify and form a shape; the prefabricated interlocking blocks 4 form a nested structure between the side opening grooves 7 and the side reinforcement plates 6, and the dimensions between the side opening grooves 7 and the side reinforcement plates 6 are mutually matched; the side reinforcement plates 6 can be equipped with detachable arc plates, and the two sets of arc plates are combined to form a circular plate structure.
[0022] The concrete-soil piles are assembled in a symmetrical interlocking manner. Precast interlocking blocks 4 are symmetrically set at both ends to interlock the concrete-soil piles. The two sets of precast interlocking blocks 4 at each end interlock to form a circular structure. The detachable side reinforcement plates 6 are used to lock the side opening slots 7 of the precast interlocking blocks 4, thereby locking and fixing the adjacent precast interlocking blocks 4 and realizing the assembly and fixing of the concrete-soil piles.
[0023] The soil pile body 1 has an inner prefabricated groove 2 inside, which can be used for grouting after assembly. The assembly method of the prefabricated interlocking blocks 4 makes the connection end fit tightly and the grout is not easy to leak to the side. The grout solidifies and forms inside the inner prefabricated groove 2. With the help of the transverse pre-embedded steel bars 3, the grout and the soil pile body 1 solidify and form a whole. The entire structure has high reliability and stability.
[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in this utility model without creative effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope defined in the claims.
Claims
1. A precast composite concrete pile with anti-loosening feature, comprising a soil pile body (1) and precast interlocking blocks (4), characterized in that: An inner prefabricated groove (2) is provided through the center of the soil pile body (1). Pre-embedded steel bars (3) are horizontally arranged at the upper and lower ends of the cavity of the inner prefabricated groove (2). Prefabricated interlocking blocks (4) are symmetrically arranged at the upper and lower ends of the soil pile body (1). Reinforcing steel bars (5) are arranged around the inside of the soil pile body (1), and circular stirrups are sleeved on the outside of multiple sets of reinforcing steel bars (5). A side opening groove (7) is provided on the outer side of the outer ring of the prefabricated interlocking block (4), and a side reinforcing plate (6) is engaged in the inner cavity of the side opening groove (7).
2. The precast composite concrete pile with anti-loosening feature according to claim 1, characterized in that, The side reinforcement plate (6) can be set as a semi-circular arc plate, and the two sets of side reinforcement plates (6) are connected and fixed by electric welding.
3. The precast composite concrete pile with anti-loosening feature according to claim 1, characterized in that, The soil pile body (1) is fitted with another set of adjacent soil pile bodies (1) by prefabricated interlocking blocks (4), and the prefabricated interlocking blocks (4) are interlocked with each other.
4. A precast composite concrete pile with anti-loosening feature according to claim 1, characterized in that, The pre-embedded steel bars (3) are symmetrically pre-embedded at both ends of the soil pile body (1). Grouting can be carried out in the inner prefabricated groove (2), and the grout and the pre-embedded steel bars (3) solidify and form a shape.
5. A precast composite concrete pile with anti-loosening feature according to claim 1, characterized in that, The prefabricated interlocking block (4) forms a nested structure between the side opening groove (7) and the side reinforcing plate (6), and the dimensions of the side opening groove (7) and the side reinforcing plate (6) are matched with each other.
6. A precast composite concrete pile with anti-loosening feature according to claim 1, characterized in that, The side reinforcement plate (6) can be provided with a detachable arc plate, and the two sets of arc plates are combined to form a circular plate structure.