Reinforced concrete precast pile connector and reinforced concrete precast pile
By adopting a joint design with convex and concave pile heads, and using screws and nuts to tighten, the problem of easy gaps in mechanical joints when stressed is solved, achieving high strength, tight connection and wide applicability of the joints.
Patent Information
- Application Number
- CN202421772426.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing mechanical joints are prone to axial gap when precast concrete piles are subjected to stress, resulting in damage or fracturing of concrete on the end surface of the pile, and the joints are easily damaged when subjected to tension, which poses safety hazards and is difficult to ensure durability.
The convex and concave pile heads are used to cooperate and tighten by screws and nuts to ensure that the joints have almost no cracks during the stress process and are tightly connected.
It achieves high strength, tight connection, high safety factor, wide applicability, short construction cycle, and improved durability.
Smart Images
Figure CN222796384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an engineering prefabricated component, in particular to a reinforced concrete prefabricated pile joint and a reinforced concrete prefabricated pile. Background Art
[0002] Mechanical joints are generally used at the ends of precast concrete piles for quick splicing between piles. Due to the problem of axial gap in existing mechanical joints, after splicing: when the precast concrete piles are subjected to bending and shearing forces, gaps will be generated between the mechanical joints, resulting in cracks at the joints of the precast concrete piles, causing damage or fracturing of the concrete on the pile end surface. The precast concrete pile foundation is an underground hidden project and cannot be repaired by itself, resulting in safety hazards in the building pile foundation; when the precast concrete piles are subjected to tension, it is impossible to ensure that the axial gaps generated by the mechanical joints are completely consistent, resulting in the mechanical joints being destroyed one by one when subjected to tension, which also leads to safety hazards in the building pile foundation; and when the precast concrete piles are subjected to bending, shearing and tensile forces, gaps will be generated between the mechanical joints, resulting in cracks at the joints, which will cause groundwater to intrude and corrode the mechanical connectors and / or the main reinforcement of the precast piles, making it difficult to ensure the durability of the precast piles. Utility Model Content
[0003] The utility model aims to provide a reinforced concrete precast pile joint and a reinforced concrete precast pile based on the joint, wherein the joint hardly generates cracks during the stress process, has a tight connection, has wide applicability and a short construction period.
[0004] The technical solution adopted by the utility model is:
[0005] A reinforced concrete prefabricated pile joint comprises a convex pile head and a concave pile head which cooperate with each other; the convex pile head comprises a convex end plate, a first screw hole distributed on the front convex part of the convex end plate, and a first anchor rod distributed on the rear part of the convex end plate, the front surface of the convex end plate exposes the reinforced concrete pile body, and the first anchor rod is anchored in the reinforced concrete pile body; the concave pile head comprises a concave end plate, a second screw hole distributed on both sides of the inner concave part of the concave end plate, and a second anchor rod distributed on the rear part of the concave end plate, the front surface of the concave end plate exposes the reinforced concrete pile body, and the second anchor rod is anchored in the reinforced concrete pile body; the front convex part of the convex end plate and the inner concave part of the concave end plate are inserted together in cooperation, each screw hole one is aligned with each screw hole two and passes through the screw and is fastened with a nut.
[0006] Preferably, the convex end plate is formed by integrally stamping a steel plate.
[0007] Preferably, the screw hole 1 is composed of a round tube 1 and a through hole 1, the two ends of the round tube 1 are welded on the convex end plate, and the through hole 1 is opened at positions corresponding to the two ends of the round tube 1 on the convex end plate.
[0008] Preferably, the anchor rod is made of steel bars.
[0009] Preferably, the concave-shaped end plate is formed by integrally stamping a steel plate.
[0010] Preferably, the screw hole 2 is composed of a round tube 2 and a through hole 2, the two ends of the round tube 2 are welded on the concave end plate, and the through hole 2 is opened at positions corresponding to the two ends of the round tube 2 on the concave end plate.
[0011] Preferably, the second anchor rod is made of steel bars.
[0012] Preferably, the surfaces of the convex end plates and the concave end plates are provided with an anti-corrosion coating.
[0013] A reinforced concrete precast pile comprises the above-mentioned reinforced concrete precast pile joint.
[0014] The beneficial effects of the utility model are:
[0015] The joint adopts concave and convex pile heads and is fastened with screws and nuts. As long as the accuracy of the convex end plate and the concave end plate is properly controlled, the splicing gap will be extremely small after prefabrication, and almost no cracks will be generated during the stress process. It has the advantages of high strength, tight connection and high safety factor; the joint has a high degree of standardization, and there is no need to change the form of the end plate in different usage scenarios. It is suitable for square piles, round piles and other forms, and is suitable for pile foundation engineering structure systems such as vertical engineering piles and inclined support piles, and has a wide applicability; the joint is assembled with fully prefabricated components, and only screws and nuts need to be installed during splicing. There is no need to pour concrete on site, no maintenance is required, and the construction speed is fast and the cycle is short. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of a reinforced concrete precast pile joint in the utility model.
[0018] Figure 2 yes Figure 1 Schematic diagram of convex pile heads and concave pile heads.
[0019] Figure 3 It is a schematic diagram of the reinforced concrete prefabricated pile in the utility model.
[0020] In the figure: 1-reinforced concrete pile body; 2-convex pile head; 21-convex end plate; 22-screw hole one; 221-round tube one; 222-through hole one; 23-anchor rod one; 3-concave pile head; 31-concave end plate; 32-screw hole two; 321-round tube two; 322-through hole two; 33-anchor rod two; 4-screw rod; 5-nut. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. In addition, the terms "XX one", "XX two", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0023] The features and performance of the present application are further described in detail below in conjunction with the embodiments.
[0024] Embodiment 1
[0025] This embodiment discloses a reinforced concrete precast pile joint, such as Figure 1 As shown, it includes a convex pile head 2 and a concave pile head 3 that cooperate with each other; Figure 1 and Figure 2 As shown, the convex pile head 2 includes a convex end plate 21, a screw hole 22 distributed in the front convex part of the convex end plate 21, and an anchor rod 23 distributed in the rear part of the convex end plate 21. The front surface of the convex end plate 21 is exposed to the reinforced concrete pile body 1, and the anchor rod 23 is anchored in the reinforced concrete pile body 1; Figure 1 and Figure 2 As shown, the concave pile head 3 includes a concave end plate 31, two screw holes 32 distributed on both sides of the concave part of the concave end plate 31, and two anchor rods 33 distributed at the rear of the concave end plate 31. The front surface of the concave end plate 31 is exposed to the reinforced concrete pile body 1, and the two anchor rods 33 are anchored in the reinforced concrete pile body 1; Figure 1 and Figure 2 As shown, the convex part of the convex end plate 21 and the concave part of the concave end plate 32 are inserted together, each screw hole 22 is aligned with each screw hole 2 32 and passes through the screw 4 and is fastened with the nut 5.
[0026] Regarding the convex pile head 2, in this embodiment, preferably: Figure 2 As shown, the convex-shaped end plate 21 is formed by integrally stamping a steel plate; the screw hole 22 is composed of a round tube 221 and a through hole 222, both ends of the round tube 221 are welded to the convex-shaped end plate 21, and the through hole 222 is opened at the corresponding positions of the two ends of the round tube 221 on the convex-shaped end plate 21; the anchor rod 23 is made of steel bars.
[0027] Regarding the concave pile head 3, in this embodiment, preferably: Figure 2 As shown, the concave-shaped end plate 31 is formed by integrally stamping a steel plate; the second screw hole 32 is composed of a second round tube 321 and a second through hole 322, both ends of the second round tube 321 are welded to the concave-shaped end plate 31, and the second through hole 322 is opened at positions corresponding to the two ends of the second round tube 321 on the concave-shaped end plate 31; the second anchor rod 33 is made of steel bars.
[0028] During the prefabrication and transportation of the convex pile head 2 and the concave pile head 3, temporary sealing materials such as foam can be filled in the screw hole 22 and the screw hole 32 to prevent debris from entering. When the two are spliced, the temporary sealing materials can be removed.
[0029] In order to effectively enhance the corrosion resistance, the thickness of the convex end plate 21 and the concave end plate 31 may be increased, and / or an anti-corrosion coating may be provided on the surface of the convex end plate 21 and the concave end plate 31 .
[0030] Embodiment 2
[0031] This embodiment discloses a reinforced concrete precast pile, such as Figure 1 As shown, it includes the above-mentioned reinforced concrete precast pile joint, and A in the figure is the reinforced concrete precast pile joint.
[0032] From the above, we can see that:
[0033] The joint adopts a concave-convex pile head and is fastened by a screw rod 4 and a nut 5. As long as the precision of the convex end plate 21 and the concave end plate 31 is properly controlled, the splicing gap is extremely small after prefabrication, and almost no cracks are generated during the stress process. It has the advantages of high strength, tight connection and high safety factor.
[0034] The joint has a high degree of standardization, and there is no need to change the form of the end plate in different usage scenarios. It is suitable for square piles, round piles, etc., and is suitable for pile foundation engineering structure systems such as vertical engineering piles and inclined support piles, with wide applicability;
[0035] The joint is assembled with fully prefabricated components, and only the screw rod 4 and the nut 5 need to be installed during splicing. There is no need to pour concrete on site, no need for maintenance, and the construction speed is fast and the period is short.
[0036] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
Claims
1. A reinforced concrete precast pile joint, characterized in that: It comprises a convex pile head and a concave pile head which cooperate with each other; the convex pile head comprises a convex end plate, a screw hole one distributed on the convex front part of the convex end plate, an anchor rod one distributed on the rear part of the convex end plate, the front surface of the convex end plate exposes the reinforced concrete pile body, and the anchor rod one is anchored in the reinforced concrete pile body; the concave pile head comprises a concave end plate, a screw hole two distributed on both sides of the concave inner part of the concave end plate, an anchor rod two distributed on the rear part of the concave end plate, the front surface of the concave end plate exposes the reinforced concrete pile body, and the anchor rod two is anchored in the reinforced concrete pile body; the convex front part of the convex end plate and the concave inner part of the concave end plate are inserted together, each screw hole one is aligned with each screw hole two and passes through the screw and is fastened with a nut.
2. The reinforced concrete precast pile joint according to claim 1, characterized in that: The convex end plate is formed by integrally stamping a steel plate.
3. The reinforced concrete precast pile joint according to claim 2, characterized in that: The screw hole 1 is composed of a round tube 1 and a through hole 1. The two ends of the round tube 1 are welded on the convex end plate. The through hole 1 is arranged at the corresponding positions of the two ends of the round tube 1 on the convex end plate.
4. The reinforced concrete precast pile joint according to claim 1, characterized in that: Anchor rods are made of steel bars.
5. The reinforced concrete precast pile joint according to claim 1, characterized in that: The concave end plate is formed by integrally stamping a steel plate.
6. The reinforced concrete precast pile joint according to claim 5, characterized in that: The screw hole 2 is composed of a round tube 2 and a through hole 2. The two ends of the round tube 2 are welded on the concave end plate. The through hole 2 is arranged at positions corresponding to the two ends of the round tube 2 on the concave end plate.
7. The reinforced concrete precast pile joint according to claim 1, characterized in that: Anchor rod 2 is made of steel bars.
8. The reinforced concrete precast pile joint according to claim 1, characterized in that: The surfaces of the convex end plate and the concave end plate are provided with an anti-corrosion coating.
9. A reinforced concrete precast pile, characterized in that: It comprises a reinforced concrete precast pile joint as described in any one of claims 1 to 8.