Prefabricated pipe pile mechanical connection structure
By combining a cylindrical clamp and a high-strength steel pin tie rod, the connection strength problem of precast pipe piles under horizontal and eccentric loads is solved, and efficient and reliable pipe pile connection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC SOUTH CHINA MUNICIPAL ENG CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-05
AI Technical Summary
Existing precast pipe pile connection methods are insufficient in strength when subjected to horizontal loads, eccentric loads, and high pull-out force requirements, making it difficult to meet the requirements of high-strength pile connections.
The system employs a combination structure of cylindrical clamps, upper and lower pipe pile connection components, and a middle connection component. Through the connection of high-strength steel pins and tie rods, a stable connection between the upper and lower pipe piles is achieved.
It improves the ability of pipe piles to resist horizontal loads, eccentric loads and pull-out forces. It has a simple structure, is easy to install, has high construction efficiency and low cost, and has reliable connection quality.
Smart Images
Figure CN224199900U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a mechanical connection structure for precast pipe piles. Background Technology
[0002] Based on the connection method, prestressed pipe pile connections can be divided into clamp-type mechanical connections, expansion interlocking mechanical connections, and pin-type connections (steel pins or steel bars).
[0003] Currently, all three of the above connections are unidirectional connections. The clamp-type mechanical connection is a transverse force connection, which uses clamps and bolts to connect two pipe piles.
[0004] Expansion interlocking mechanical connections and pin-connection connections (steel pins or steel bars) are vertically stressed and use expansion bolts or connecting pins to connect two pipe piles.
[0005] The three existing mechanical connection methods have a single force-bearing mode. They are good for axial vertical loads, but their performance is not ideal for piles subjected to horizontal loads, eccentric loads, and high pull-out resistance requirements, and they are difficult to meet the requirements of high-strength pile connections.
[0006] Therefore, a mechanical connection structure for precast pipe piles is proposed to address the above problems. Utility Model Content
[0007] The purpose of this utility model is to overcome the existing defects and provide a mechanical connection structure for precast pipe piles, which solves the problem of pipe pile connection strength.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a mechanical connection structure for precast pipe piles, comprising a cylindrical clamp, an upper pipe pile connection assembly, a lower pipe pile connection assembly, and a middle connection assembly;
[0009] The upper pipe pile connecting assembly is connected to the upper end of the cylindrical clamp, the lower pipe pile connecting assembly is connected to the lower end of the cylindrical clamp, the middle connecting assembly is connected to the middle of the inner wall of the cylindrical clamp, the upper pipe pile connecting assembly is connected to the lower end of the upper pipe pile, the lower pipe pile connecting assembly is connected to the upper end of the lower pipe pile, and the upper and lower ends of the middle connecting assembly are respectively connected to the upper pipe pile and the lower pipe pile.
[0010] Preferably, the middle connecting assembly includes an annular end plate, on which eight plug rods are inserted at equal intervals around the circumference; the upper and lower ends of the eight plug rods are respectively connected to the upper pipe pile and the lower pipe pile.
[0011] Preferably, the upper pipe pile connection assembly includes two upper tie rods, which pass through the cylindrical clamp and the upper pipe pile, with both ends protruding from the outside of the cylindrical clamp and each connected to an upper locking nut.
[0012] Preferably, the lower pipe pile connection assembly includes two lower tie rods, which pass through the cylindrical clamp and the lower pipe pile, with both ends protruding outside the cylindrical clamp and each connected to a lower locking nut.
[0013] Preferably, the connector rod is a high-strength steel pin.
[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This precast pipe pile mechanical connection structure, through its configuration, connects the upper pipe pile connecting component to the upper end of the cylindrical clamp, the lower pipe pile connecting component to the lower end of the cylindrical clamp, and the middle connecting component to the middle of the inner wall of the cylindrical clamp. The upper pipe pile connecting component connects to the lower end of the upper pipe pile, the lower pipe pile connecting component connects to the upper end of the lower pipe pile, and the upper and lower ends of the middle connecting component connect to the upper and lower pipe piles respectively. The structure is simple and easy to install; it is unaffected by weather, greatly improving construction efficiency; the design is reasonable, the cost is low, and the connection quality is reliable. It effectively resists horizontal loads, eccentric loads, and pull-out forces on the pipe piles; it solves both the problem of pipe pile connection strength and the problem of weak resistance to horizontal loads, eccentric loads, and pull-out forces on the pipe piles. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0016] Figure 1 This is a schematic diagram illustrating the application of the precast pipe pile mechanical connection structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the mechanical connection structure of the precast pipe pile of this utility model;
[0018] Figure 3 This is a detailed view of the connection of the annular end plate of this utility model.
[0019] In the diagram: 1. Cylindrical clamp; 2. Upper pipe pile; 3. Lower pipe pile; 4. Annular end plate; 5. Insert rod; 6. Upper tie rod; 7. Upper locking nut; 8. Lower tie rod; 9. Lower locking nut. 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 A mechanical connection structure for precast pipe piles includes a cylindrical clamp 1, an upper pipe pile connection assembly, a lower pipe pile connection assembly, and a middle connection assembly. The upper pipe pile connection assembly is connected to the upper end of the cylindrical clamp 1, the lower pipe pile connection assembly is connected to the lower end of the cylindrical clamp 1, the middle connection assembly is connected to the middle of the inner wall of the cylindrical clamp 1, the upper pipe pile connection assembly is connected to the lower end of the upper pipe pile 2, the lower pipe pile connection assembly is connected to the upper end of the lower pipe pile 3, and the upper and lower ends of the middle connection assembly are respectively connected to the upper pipe pile 2 and the lower pipe pile 3.
[0022] Specifically, the middle connecting assembly includes an annular end plate 4, with eight insertion rods 5 evenly spaced around its circumference; the upper and lower ends of the eight insertion rods 5 are respectively connected to the upper pipe pile 2 and the lower pipe pile 3. The insertion rods 5 are high-strength steel pins. The upper pipe pile connecting assembly includes two upper tie rods 6, which pass through the cylindrical clamp 1 and the upper pipe pile 2, with both ends protruding outside the cylindrical clamp 1 and each connected to an upper locking nut 7. The lower pipe pile connecting assembly includes two lower tie rods 8, which pass through the cylindrical clamp 1 and the lower pipe pile 3, with both ends protruding outside the cylindrical clamp 1 and each connected to a lower locking nut 9.
[0023] During connection, first align the plug rod 5 with the steel pin hole of the lower end of the pipe pile 3, then gradually insert the plug rod 5 into the steel pin hole of the pile. Then, insert the lower tie rod 8 from one side bolt hole and out from the other side bolt hole. The two lower tie rods 8 pass through the entire pipe pile. Finally, tighten the lower lock nut 9 to complete the connection of the lower pipe pile 3.
[0024] For the connection of the upper pipe pile 2, place the upper pipe pile 2 into the cylindrical clamp 1. After aligning the insertion rod 5 with the steel pin hole of the precast pipe pile 2, gradually insert the insertion rod 5 into the steel pin hole of the upper pipe pile 2. Then, insert the two upper tie rods 6 from the bolt hole on one side and out from the bolt hole on the other side, so that the two upper tie rods 6 pass through the entire cylindrical clamp 1. Finally, tighten the upper lock nut 7 to complete the lower connection of the upper pipe pile 2.
[0025] This precast pipe pile mechanical connection structure is simple in structure and easy to install; it is not affected by weather, greatly improving construction efficiency; it is reasonably designed, has low cost, and reliable connection quality. It effectively resists horizontal loads, eccentric loads, and pull-out forces of the pipe piles; it solves both the problem of pipe pile connection strength and the problem of weak resistance to horizontal loads, eccentric loads, and pull-out forces of the pipe piles.
[0026] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A mechanical connection structure for precast pipe piles, characterized in that, It includes a cylindrical clamp (1), an upper pipe pile connection assembly, a lower pipe pile connection assembly, and a middle connection assembly; The upper pipe pile connecting assembly is connected to the upper end of the cylindrical clamp (1), the lower pipe pile connecting assembly is connected to the lower end of the cylindrical clamp (1), the middle connecting assembly is connected to the middle of the inner wall of the cylindrical clamp (1), the upper pipe pile connecting assembly is connected to the lower end of the upper pipe pile (2), the lower pipe pile connecting assembly is connected to the upper end of the lower pipe pile (3), and the upper and lower ends of the middle connecting assembly are respectively connected to the upper pipe pile (2) and the lower pipe pile (3).
2. The mechanical connection structure for precast pipe piles according to claim 1, characterized in that, The middle connecting component includes an annular end plate (4), on which eight plug rods (5) are inserted at equal intervals around the circumference; the upper and lower ends of the eight plug rods (5) are respectively connected to the upper pipe pile (2) and the lower pipe pile (3).
3. The mechanical connection structure for precast pipe piles according to claim 1, characterized in that, The upper pipe pile connection assembly includes two upper tie rods (6), which pass through the cylindrical clamp (1) and the upper pipe pile (2), with both ends protruding outside the cylindrical clamp (1) and each connected to an upper locking nut (7).
4. The mechanical connection structure for precast pipe piles according to claim 1, characterized in that, The lower pipe pile connection assembly includes two lower tie rods (8), which pass through the cylindrical clamp (1) and the lower pipe pile (3), with both ends protruding outside the cylindrical clamp (1) and each connected to a lower locking nut (9).
5. The mechanical connection structure for precast pipe piles according to claim 2, characterized in that, The connector (5) is a high-strength steel pin.