Structure-reinforced combined prestressed pipe pile
By using clamps, limiting grooves, limiting plates, threaded rods and nuts in combined prestressed pipe piles, the problem of insufficient welding connection strength is solved, and the pull-out resistance and connection strength of the pipe piles are improved, making it more suitable for construction.
Patent Information
- Application Number
- CN202420910265.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-28
AI Technical Summary
After the existing combined prestressed pipe piles are connected by welding, the connection strength is weak and the pull-out resistance is insufficient.
The structures are adopted such as clamps, limit grooves, limit plates, threaded rods and nuts. Through the cooperation of limit plates and threaded rods, the tension on the pipe piles is provided, making the connection stronger and increasing pull resistance.
The connection strength and pull resistance of combined prestressed pipe piles are improved, ensuring that the pipe piles are more stable during construction and are easier to penetrate into the soil.
Smart Images
Figure CN222648756U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil engineering, in particular to a structurally reinforced combined prestressed pipe pile. Background Art
[0002] Prestressed pipe piles usually refer to reinforced concrete prestressed pipe piles. Reinforced concrete prestressed pipe piles are also called concrete precast piles. They are prefabricated in prefabricated component processing plants, and after curing, they reach the designed strength, then transported to the construction site, driven into the soil with a pile driver, and then the cap beam (slab) foundation is poured on the top of the pile. The concrete grade used for reinforced concrete precast piles should not be less than 300#. The diameter of the force-bearing steel bars of the pile should not be less than 12 mm, and generally 4 to 8 main bars are configured. In order to resist hammering and penetrate the soil layer, the stirrups should be denser at the top and tip of the pile, and the main bars at the tip of the pile should be bent and welded to a core rod. Reinforced concrete precast piles have the advantages of simple production, high strength, high rigidity, and can be made into various cross-sectional shapes. It is a widely used pile type.
[0003] The existing combined prestressed pipe piles use welding to connect two groups of prestressed pipe piles. However, factors such as insufficient cooling of the welding points or excessive temperature difference during cooling during the construction process will cause weak points in the connection joints of the two groups of prestressed pipe piles, making it impossible to effectively combine them into one piece. In addition, the two-section welding method cannot improve the pull-out resistance of the prestressed pipe piles. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the problem that the combined prestressed pipe piles are weak in strength after being connected by welding, and a structurally reinforced combined prestressed pipe pile is proposed.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a structurally reinforced combined prestressed pipe pile, including a first pipe pile, four groups of limit grooves are provided on the top and bottom of the outer side of the first pipe pile, and limit plates are provided inside the limit grooves. The cross-section of the limit plate is a right-angled trapezoid, and two groups of clamps are provided on the outside of the bottom of the first pipe pile, and two groups of threaded rods are passed through the top and bottom of each group of clamps. A limit block is provided at one end of the threaded rod and passes through the limit plate, and a first nut is provided at the other end of the threaded rod, and a second pipe pile is provided at the bottom of the first pipe pile.
[0006] Preferably, the second pipe pile structure is the same as the first pipe pile structure, and the second pipe piles are aligned with the first pipe piles in the vertical direction.
[0007] Preferably, a group of end plates are provided at the top and bottom of the first pipe pile and the second pipe pile, and the diameter of the end plates is the same as the diameter of the first pipe pile.
[0008] Preferably, ten groups of limiting holes are provided on the surface of the end plate, limiting columns are provided inside the limiting holes, and the length of the limiting columns is twice the depth of the limiting holes.
[0009] Preferably, a main rib penetrates the side of the limiting hole, the main rib penetrates the first pipe pile, and both ends of the main rib are thicker and are stuck inside the end plate.
[0010] Preferably, a rubber ring is provided on the inner edge of the clamp, and the rubber ring is adhesively connected to the clamp.
[0011] Preferably, a groove is provided on the outside of the clamp, two groups of fastening bolts penetrate the contact parts of the two groups of clamps, and a second nut is sleeved on the outer side of the front side of the fastening bolts.
[0012] Beneficial Effects
[0013] In the utility model, a clamp, a limit groove, a limit plate, a threaded rod, a first nut and a limit block are adopted. The clamp is wrapped around the outside of the adjacent parts of the first pipe pile and the second pipe pile, the limit plate is stuck in the limit groove, and the first nut is tightened to provide a pulling force toward the clamp to the first pipe pile and the second pipe pile through the threaded rod and the limit block, so that the connection between the first pipe pile and the second pipe pile is more firm and the pull-out resistance is also stronger. In addition, due to the huge friction force, the limit plate is not easy to detach from the inside of the limit groove, and the cross-section of the limit plate is a right-angle trapezoid, so that the first pipe pile and the second pipe pile are easier to drive into the soil. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an axonometric drawing of the utility model;
[0015] Figure 2 It is a front view of the utility model;
[0016] Figure 3 For the utility model Figure 1 The structural diagram of A in the middle;
[0017] Figure 4 It is an axonometric view of the limiting plate of the utility model.
[0018] Legend:
[0019] 1. First pipe pile; 2. Clamp; 3. Second pipe pile; 4. End plate; 5. Limiting groove; 6. Limiting plate; 7. Limiting column; 8. Main reinforcement; 9. Limiting hole; 10. Threaded rod; 11. First nut; 12. Second nut; 13. Rubber ring; 14. Limiting block; 15. Fastening bolt. DETAILED DESCRIPTION
[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.
[0021] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:
[0023] Reference Figure 1-4 The present embodiment provides a structurally reinforced combined prestressed pipe pile, comprising a first pipe pile 1, wherein four groups of limiting grooves 5 are provided on the top and bottom of the outer side of the first pipe pile 1, and limiting plates 6 are provided inside the limiting grooves 5, and the cross section of the limiting plates 6 is a right-angled trapezoid. Two groups of clamps 2 are provided on the outer side of the bottom of the first pipe pile 1, and the clamps 2 wrap the outer sides of both ends of the first pipe pile 1 and the second pipe pile 3. The clamps 2 are arc-shaped, and the inner diameter of the clamps 2 is the same as the diameter of the first pipe pile 1. A rubber ring 13 is provided on the inner edge of the clamps 2, and the rubber ring 13 is adhesively connected to the clamps 2. A groove is provided on the outer side of the clamps 2, and two groups of fastening bolts 15 are penetrated at the contact parts of the two groups of clamps 2. A second nut 12 is sleeved on the outer side of the front of the fastening bolts 15, and the first pipe pile 1 and the second pipe pile 3 are connected by the second nut 12 and the fastening bolts 15. Two groups of threaded rods 10 are penetrated on the top and bottom of each group of clamps 2, and the threaded rods 10 A limit block 14 is provided at one end and passes through the limit plate 6, and a first nut 11 is provided at the other end of the threaded rod 10. A second pipe pile 3 is provided at the bottom of the first pipe pile 1. The structure of the second pipe pile 3 is the same as that of the first pipe pile 1. The second pipe pile 3 and the first pipe pile 1 are aligned in the vertical direction. A group of end plates 4 are provided on the top and bottom of the first pipe pile 1 and the second pipe pile 3. The diameter of the end plate 4 is the same as that of the first pipe pile 1. Ten groups of limit holes 9 are provided on the surface of the end plate 4. Limit columns 7 are provided inside the limit holes 9. The length of the limit columns 7 is twice the depth of the limit holes 9. The other end of the limit column 7 is inserted into the limit holes 9 at one end of another group of prestressed pipe piles. A main rib 8 passes through the side of the limit hole 9. The main rib 8 passes through the first pipe pile 1. Both ends of the main rib 8 are thicker and stuck in the end plate 4. The main rib 8 provides pull-out resistance for the prestressed pipe pile and makes the first pipe pile 1 and the second pipe pile 3 fit tightly against the end plate 4.
[0024] The user drives the second pipe pile 3 into the soil with a pile driver until the four groups of limit grooves 5 on the top are exposed to the ground, and inserts the limit column 7 into the limit hole 9 of the end plate 4 on the top of the second pipe pile 3. Then, the first pipe pile 1 is placed on the top of the second pipe pile 3 after the limit hole 9 at the bottom is aligned with the limit column 7. The two groups of end plates 4 are first connected by electric welding, and then two groups of clamps 2 are sleeved on the outside of the welding part. Two groups of second nuts 12 and fastening bolts 15 are used to fix the two groups of clamps 2 on the outside of the first pipe pile 1 and the second pipe pile 3. The limiting plate 6 is stuck in the limiting groove 5, and the first nut 11 is tightened to provide a pulling force toward the clamp 2 to the first pipe pile 1 and the second pipe pile 3 through the threaded rod 10 and the limiting block 14, so that the connection between the first pipe pile 1 and the second pipe pile 3 is more firm and the pull-out resistance is also stronger. In addition, due to the huge friction force, the limiting plate 6 is not easy to detach from the limiting groove 5. Then, the first pipe pile 1 is also driven into the soil with a pile driver. The cross-section of the limiting plate 6 is a right-angled trapezoid, which makes it easier for the first pipe pile 1 and the second pipe pile 3 to be driven into the soil. Specific embodiment 2:
[0026] Reference Figure 1-4 The present embodiment provides a structurally reinforced combined prestressed pipe pile, including a first pipe pile 1. Two groups of clamps 2 are arranged on the outside of the bottom of the first pipe pile 1. A rubber ring 13 is arranged on the inner edge of the clamp 2. The rubber ring 13 is adhesively connected to the clamp 2. After the end plate 4 between the first pipe pile 1 and the second pipe pile 3 is welded together, the two groups of clamps 2 are used to wrap the welding part, and the second nut 12 and the fastening bolt 15 are used to fix the position of the clamp 2. The rubber ring 13 seals the welding part to prevent the liquid and air in the soil from contacting the welding part and thus affecting the strength of the welding part.
[0027] In summary:
[0028] A clamp 2, a limiting groove 5, a limiting plate 6, a threaded rod 10, a first nut 11, and a limiting block 14 are used. The clamp 2 is wrapped around the outside of the adjacent parts of the first pipe pile 1 and the second pipe pile 3, and the limiting plate 6 is stuck in the limiting groove 5. Tightening the first nut 11 provides a pulling force toward the clamp 2 to the first pipe pile 1 and the second pipe pile 3 through the threaded rod 10 and the limiting block 14, so that the connection between the first pipe pile 1 and the second pipe pile 3 is more firmly established and has stronger pull-out resistance. In addition, due to the huge friction force, the limiting plate 6 is not easy to detach from the limiting groove 5. The cross-section of the limiting plate 6 is a right-angled trapezoid, which makes it easier for the first pipe pile 1 and the second pipe pile 3 to be driven into the soil.
[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A structurally reinforced combined prestressed pipe pile, comprising a first pipe pile (1), characterized in that: Four groups of limiting grooves (5) are provided at the top and bottom of the outer side of the first pipe pile (1), and limiting plates (6) are provided inside the limiting grooves (5). The cross section of the limiting plates (6) is a right-angled trapezoid. Two groups of clamps (2) are provided outside the bottom of the first pipe pile (1), and two groups of threaded rods (10) are passed through the top and bottom of each group of clamps (2). A limiting block (14) is provided at one end of the threaded rod (10) and passes through the limiting plate (6). A first nut (11) is provided at the other end of the threaded rod (10). A second pipe pile (3) is provided at the bottom of the first pipe pile (1).
2. The structurally reinforced combined prestressed pipe pile according to claim 1, characterized in that: The structure of the second pipe pile (3) is the same as that of the first pipe pile (1), and the second pipe pile (3) and the first pipe pile (1) are aligned in the vertical direction.
3. The structurally reinforced combined prestressed pipe pile according to claim 1, characterized in that: A group of end plates (4) are provided at the top and bottom of the first pipe pile (1) and the second pipe pile (3); the diameter of the end plates (4) is the same as that of the first pipe pile (1).
4. The structurally reinforced combined prestressed pipe pile according to claim 3, characterized in that: Ten groups of limiting holes (9) are provided on the surface of the end plate (4), limiting columns (7) are provided inside the limiting holes (9), and the length of the limiting columns (7) is twice the depth of the limiting holes (9).
5. The structurally reinforced combined prestressed pipe pile according to claim 4, characterized in that: A main rib (8) passes through the side of the limiting hole (9), and the main rib (8) passes through the first pipe pile (1). Both ends of the main rib (8) are relatively thick and are clamped inside the end plate (4).
6. The structurally reinforced combined prestressed pipe pile according to claim 1, characterized in that: A rubber ring (13) is provided on the inner edge of the clamp (2), and the rubber ring (13) is adhesively connected to the clamp (2).
7. The structurally reinforced combined prestressed pipe pile according to claim 1, characterized in that: The outside of the clamp (2) is provided with a groove, and two groups of fastening bolts (15) penetrate the contact parts of the two groups of clamps (2), and the front outside of the fastening bolts (15) is sleeved with a second nut (12).