End structure for prestressed pile

Abstract

The utility model discloses an end structure for a prestressed pile, the end structure is used for connecting a reinforcement cage of a prestressed concrete pile, the end structure is composed of an end plate and a skirt plate, the skirt plate is a plate body extending from the periphery of the end plate to one side of the end plate; and at least one stirrup hooking part is arranged on the inner wall of the plate body of the end plate and the inner wall of the plate body of the skirt plate. The stirrups are fixedly blocked on the inner side of the end connecting piece, so that the prestressed pile cannot retract during pouring, the stirrups are evenly distributed on a reinforcement cage, it is ensured that the poured stirrups can be arranged on the standard range portion of the inner side of the end plate of the pile, and the defect that the stirrups are possibly lost at the pile portion near the end plate in a traditional method is overcome.

Description

Technical Field

[0001] The utility model relates to the field of official pile accessories, in particular to an end structure for a prestressed pile. Background Art

[0002] As an important building structural element, the stability and reliability of the end connectors of prestressed piles are directly related to the stability and safety of the entire structure. However, in the actual construction process, the pile part near the end plate is prone to shrinkage. On the one hand, due to the certain elasticity of the stirrups themselves, when the concrete is poured, the stirrups are easily pushed outward due to the pressure and flow of the concrete. As the concrete solidifies, the stirrups try to restore their original shape, resulting in shrinkage. On the other hand, if the design of the end connector is not reasonable or the operation during the construction process is improper, the shrinkage of the stirrups may also be aggravated. Not only will it affect the construction quality of the prestressed pile, it is also likely to cause a loose connection between the pile body and the end connector, thereby affecting the bearing capacity and stability of the entire structure.

[0003] Therefore, a stable terminal connection is needed to solve this problem. Utility Model Content

[0004] In view of the above problems, the utility model aims to provide an end structure for a prestressed pile.

[0005] To achieve the technical purpose, the solution of the utility model is: an end structure for a prestressed concrete pile, which is used for connecting the steel cage of the prestressed concrete pile, and is composed of an end plate and a skirt plate. The skirt plate is a plate body extending from the periphery of the end plate to one side of the end plate, and at least one stirrup hook stop is provided on the inner wall of the plate body of the end plate and the skirt plate.

[0006] Preferably, the stirrup hook stop portion is welded or screwed to the inner wall of the plate body.

[0007] Preferably, the stirrup hook stop portion is an "L"-shaped, or "|"-shaped, or "J"-shaped, or arc-shaped, or T-hat-shaped structural member.

[0008] Preferably, the outer edge of the end plate is provided with a chamfer or a rounded corner.

[0009] Preferably, the end plate is a circular structure, and the skirt plate is a circular ring structure.

[0010] Preferably, the end plate is a square structure, and the skirt plate is a square ring structure.

[0011] Preferably, the skirt plate and the end plate are both made of high-strength steel structures, the thickness of the end plate is 10mm-30mm, and the thickness of the end plate is 5mm-15mm.

[0012] The beneficial effect of the utility model is that the stirrups are fixed and stopped on the inner side of the end connector, so that the prestressed pile will not shrink during pouring, and the stirrups are evenly distributed on the steel cage, ensuring that the stirrups after pouring can be arranged in the standard range of the inner side of the end plate of the pile, avoiding the disadvantage of missing stirrups in the pile part near the end plate that may be caused by traditional practices. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the structural schematic diagrams of the circular end plate in the specific embodiment of the utility model;

[0014] Figure 2 This is the second structural schematic diagram of the circular end plate in the specific embodiment of the utility model;

[0015] Figure 3 This is the third structural diagram of the circular end plate in the specific embodiment of the utility model;

[0016] Figure 4 This is one of the structural schematic diagrams of the square end plate in the specific embodiment of the utility model;

[0017] Figure 5 This is the second structural diagram of the square end plate in the specific embodiment of the utility model;

[0018] Figure 6 This is the third structural diagram of the square end plate in the specific embodiment of the utility model;

[0019] Figure 7 This is one of the structural schematic diagrams of the hook stop portion of the stirrup in a specific embodiment of the utility model;

[0020] Figure 8 It is a structural schematic diagram of the utility model in which the hook stop portion of the stirrup is arranged on the inner wall of the end plate.

[0021] In the figure: 1, end plate; 101, through hole; 102, reinforcement fixing hole; 103, first connecting hole; 104, second connecting hole; 105, through groove; 2, skirt plate; 201, stirrup hook stop. DETAILED DESCRIPTION

[0022] The utility model of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; based on the contents recorded in this application, other embodiments obtained without creative work are all within the scope of protection of this utility model.

[0023] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of clearly describing the present embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0024] like Figure 1-8 As shown, the specific embodiment described in the utility model is an end structure for prestressed concrete piles, which is used for connecting the steel cage of prestressed concrete piles, and is composed of an end plate 1 and a skirt plate 2. The skirt plate 2 is a plate body extending from the periphery of the end plate to one side of the end plate, and at least one stirrup hook stop 201 is provided on the inner wall of the plate body of the end plate 1 and the skirt plate 2. The end plate 1 and the skirt plate 2 are an integrally formed structure or welded together. When an integrally formed structure is adopted, the end plate 1 and the skirt plate 2 are cast as one body, and there is no additional welding point or seam between them, so it has a higher structural strength; welding fixation is highly flexible and has a wider range of applications, and can be adjusted to meet different size and shape requirements during the manufacturing process.

[0025] Since concrete pipe piles need to undergo centrifugal rotation during the manufacturing process, in order to adapt to this special hollow structure of the pipe piles, the design of the end structure also needs to be adjusted accordingly. The stirrup hook stop 201 is welded or screwed to the inner wall of the plate body. The connection through welding is more stable, and the threaded connection is easy to replace.

[0026] like Figure 1-6 As shown, the stirrup hook stop 201 is an "L"-shaped structure, the stirrup hook stop 201 is vertically connected to the inner wall of the skirt plate 2, and the stirrup is wound and hooked on the stirrup hook stop 201; in addition to the "L" shape, the stirrup hook stop can also be a "|" shape, or a "J" shape, or an arc shape, or a T-hat shape. Figure 7 As shown, the stirrup hook stop portion 201 is a "|" shape, and the stirrup hook stop portion 201 is vertically connected to the inner wall of the skirt plate 2 or the inner wall of the end plate 1, and the stirrup is installed on the stirrup hook stop portion 201 by winding or the like; Figure 8 As shown, the stirrup hooking portion 201 is arranged on the inner wall of the end plate 1. Of course, the hooking portion 201 of the present invention is not limited to the above preferred structures, and can also be any other structure that can achieve the hooking effect.

[0027] The outer edge of the end plate 1 is provided with a chamfer or a rounded corner to improve the safety of the overall structure and make the assembly process smoother. Figure 1-3 As shown, the end plate 1 is a circular structure, and the skirt plate 2 is a circular ring structure. Figure 4-6As shown, the end plate 1 is a square structure, and the skirt plate 2 is a square ring structure. Of course, the specific shapes of the end plate and the corresponding skirt plate are determined by specific needs and can be any shape.

[0028] In order to ensure that the prestressed piles can withstand huge loads such as tension and pressure, the skirt plate 2 and the end plate 1 are made of high-strength steel, providing a stable and reliable foundation for the prestressed piles. Preferably, the thickness of the end plate 1 is 10mm-30mm, and the thickness of the end plate 1 is 5mm-15mm.

[0029] The steel cage includes a plurality of main bars, which correspond to the steel bar fixing holes 102 one by one, and stirrups are spirally wound between the outer sides of each main bar. The present application preferably provides four symmetrically arranged stirrup hooks 201 on the inner wall of the skirt plate 2, or more, to ensure that the stirrups are evenly distributed and fixed on the inner wall of the skirt plate 2, which is convenient for the stirrup hooks 201 to fix the stirrups on the skirt plate 2, improves the construction efficiency, and better constrains the concrete. When pouring concrete, the stirrups and the skirt plate 2 can form a more stable and solid overall structure together. The steel bar fixing hole 102 of the end structure is preferably a gourd-shaped structure, and the steel bar fixing hole 102 is composed of a first connecting hole 103, a second connecting hole 104, and a through groove 105 therebetween. The aperture of the first connecting hole 103 is smaller than the aperture of the second connecting hole 104, and the through groove 105 is connected between the first connecting hole 103 and the second connecting hole 104.

[0030] It should be noted that when adjusting the soil strength of the concrete pipe pile, it is necessary to hammer it into the ground, so its strength requirement is relatively high. When making it, multiple main bars will be straightened first, and stirrups will be evenly wrapped around each main bar. The main bars and stirrups are connected to form a steel cage embedded in the pipe pile. The steel cage supports the concrete of the pipe pile, thereby achieving the effect of improving the strength of the pipe pile. The main bar ends at both ends of the steel cage need to be connected to the end plate 1. To adapt to the connection with the end plate 1, both ends of the main bars of the steel cage are made of prestressed pier heads by means of electric heating press heads; the steel cage includes a plurality of main bars, and the ends of the main bars have pier heads, the diameter of the pier heads is larger than the diameter of the main bars, and the diameter of the pier heads is smaller than the diameter of the connecting hole and larger than the diameter of the main bar hole.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. An end structure for a prestressed pile, which is used for connecting a steel cage of a prestressed concrete pile, and is composed of an end plate and a skirt plate, and is characterized in that: The skirt plate is a plate body extending from the periphery of the end plate to one side of the end plate, and at least one stirrup hook stop portion is arranged on the inner wall of the plate body of the end plate and the skirt plate.

2. The end structure for prestressed piles according to claim 1, characterized in that: The stirrup hook stop portion is welded or screwed to the inner wall of the plate body.

3. The end structure for prestressed piles according to claim 2, characterized in that: The stirrup hook stop portion is an "L"-shaped, or "|"-shaped, or "J"-shaped, or arc-shaped, or T-hat-shaped structural member.

4. The end structure for prestressed piles according to claim 3, characterized in that: The outer edges of the end plates are provided with chamfers or rounded corners.

5. The end structure for prestressed piles according to claim 4, characterized in that: The end plate is a circular structure, and the skirt plate is a circular ring structure.

6. The end structure for prestressed piles according to claim 4, characterized in that: The end plate is a square structure, and the skirt plate is a square ring structure.

7. The end cap structure for prestressed piles according to any one of claims 1 to 6, characterized in that: The skirt plate and the end plate are both made of high-strength steel structures. The thickness of the end plate is 10mm-30mm, and the thickness of the end plate is 5mm-15mm.

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