A kind of pre-stressed concrete bamboo joint pile different inner diameter size pile core supporting plate

Abstract

A kind of different inner diameter size pile core support plate for prestressed concrete bamboo joint pile, including upper support plate fixed part and support plate body, upper support plate fixed part includes transverse structure fixed on filling core reinforcement and vertical pole fixed in the center of transverse structure, support plate body includes several identical arc-shaped steel support plates and compression spring connected between single arc-shaped steel support plate and vertical pole, and several arc-shaped steel support plates are spliced to form single circular steel plate.Compared with previous single size circular support plate, three assembled circular support plates are changed, three flexible springs are placed on the back of three support plates respectively, different inner diameter bamboo joint pile is encountered, the shape of support plate is changed by spring deformation, and then smoothly enter bamboo joint pile, which is convenient for installation, and prevents concrete from leaking downward during grouting.

Description

Technical Field

[0001] This application relates to the field of building construction, specifically to a core support plate for prestressed concrete bamboo-joint piles with different inner diameters. Background Technology

[0002] The main function of the precast concrete pile core is to increase its bonding force and friction with the inner hole of the pipe pile, and to ensure an effective and reliable connection between the subsequently poured foundation concrete and the pile head through the expansion reinforced concrete of the core, thus preventing the pile head from shifting or falling off.

[0003] It has many functions, such as improving uneven settlement, enhancing liquefaction resistance, and soil stabilization, which significantly improves the safety and stability of building structures.

[0004] According to the drawings and specifications, the wall thickness of prestressed concrete bamboo-joint piles should not be less than 110mm, and the minimum protective layer thickness of the reinforcing steel should not be less than 40mm. This resulted in inconsistent wall thicknesses of the prestressed concrete bamboo-joint piles delivered to the site, ranging from 150 to 110mm. However, the outer diameter of the bamboo-joint piles was consistent, resulting in a large difference in the inner diameter of the hollow core, which could lead to quality problems during the later filling process. Utility Model Content

[0005] The purpose of this invention is to provide a core support plate for prestressed concrete bamboo-joint piles with different inner diameters, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A core support plate for prestressed concrete bamboo-joint piles with different inner diameters is characterized by comprising an upper support plate fixing part and a support plate body. The upper support plate fixing part includes a transverse structure fixed to the core reinforcement and a vertical rod fixed to the center of the transverse structure. The support plate body includes several arc-shaped steel support plates of the same shape and a compression spring connecting the single arc-shaped steel support plate and the vertical rod. Several arc-shaped steel support plates are assembled to form a single circular steel plate.

[0007] More preferably, the arc of the arc-shaped steel support plate is less than 180°.

[0008] Furthermore, the arc-shaped steel support plate has an arc of 120°, and there are three arc-shaped steel support plates.

[0009] Furthermore, the lower part of the vertical rod and the bottom of each arc-shaped steel support plate are provided with guide rods, and the top surface of the guide rods is located on the same horizontal plane.

[0010] Furthermore, the guide rod is adjustable in length and is formed by stacking two U-shaped channel steels, including a plug rod and a receiving rod. The end of the plug rod extending outward is provided with a baffle, and the height of the baffle is greater than the thickness of the arc-shaped steel support plate.

[0011] Furthermore, a short guide rod is provided at the bottom of the arc-shaped steel support plate, and the short guide rod is confined within the U-shaped groove of the guide rod.

[0012] In addition, the transverse structure is made of several steel bars and hooked to the filling steel bars on both sides.

[0013] More preferably, the thickness of the arc-shaped steel support plate is 3mm.

[0014] Compared with the prior art, this utility model has the following features and beneficial effects: Compared to the previous single-size round support plate, this application uses three assembled round support plates. Three flexible springs are placed on the back of each of the three support plates. When encountering bamboo joint piles with different inner diameters, the springs deform to change the shape of the support plate, thus smoothly entering the bamboo joint pile. This facilitates installation and prevents concrete from leaking downwards during grouting. Attached Figure Description

[0015] Figure 1 This is a specific application illustration of this application; Figure 2 This application provides a structural illustration of a core support plate for prestressed concrete bamboo-joint piles with different inner diameters. Figure 3 This is a schematic diagram of the guide rod structure involved in this application.

[0016] Reference numerals: 1-Upper support plate fixing part; 11-Horizontal structure; 12-Vertical rod; 2-Support plate body; 21-Arc-shaped steel support plate; 22-Compression spring; 23-Guide rod; 24-Baffle plate; 3-Core filling steel bar. Detailed Implementation

[0017] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0018] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0019] Example 1 A type of core support plate for prestressed concrete bamboo-joint piles with different inner diameters, such as Figures 1-3As shown, the device includes an upper support plate fixing part 1 and a support plate body 2. The upper support plate fixing part 1 includes a transverse structure 11 fixed on the core reinforcing bar 3 and a vertical rod 12 fixed at the center of the transverse structure. The support plate body 2 includes several arc-shaped steel support plates 21 of the same shape and a compression spring 22 connecting the single arc-shaped steel support plate 21 and the vertical rod 12. Several arc-shaped steel support plates 21 are assembled to form a single circular steel plate. The arc of the arc-shaped steel support plate 21 is less than 180°.

[0020] Example 2 Based on Embodiment 1, in this embodiment, the arc of the arc-shaped steel support plate 21 is 120°, and there are three arc-shaped steel support plates 21. The bottom of the vertical rod 12 and the bottom of each arc-shaped steel support plate 21 are provided on the guide rod 23, and the top surface of the guide rod 23 is located on the same horizontal plane.

[0021] The guide rod 23 is adjustable in length and is formed by stacking two U-shaped channel steels. It includes a plug rod and a receiving rod. The end of the plug rod extending outward is provided with a baffle 24. The height of the baffle 24 is greater than the thickness of the arc-shaped steel support plate 21. The bottom of the arc-shaped steel support plate 21 is provided with a short guide rod. The short guide rod is confined within the U-shaped groove of the guide rod 23. The two vertical plates of the U-shaped groove should be bent inward so that the entire U-shaped groove becomes a channel for confining the short guide rod.

[0022] The transverse structure 11 is made of several steel bars and hooked to the core reinforcing bars 3 on both sides. The arc-shaped steel support plate 21 is 3mm thick. The guide rod 23 can support the arc-shaped steel support plate and guide it, so that the arc-shaped steel support plate can move along the same plane. It also prevents the arc-shaped steel support plate from moving left or right in the same plane.

[0023] In use, the compression spring pushes the arc-shaped steel support plate 21 forward, and the arc-shaped edge of the arc-shaped steel support plate abuts against the baffle, driving the plug rod to move forward until it abuts against the wall of the prestressed concrete bamboo-joint pile. Note that if the inner wall of the concrete bamboo-joint pile is larger than the diameter of a single circular steel plate formed by splicing several arc-shaped steel support plates 21, a gap will be generated between the arc-shaped steel support plates when it finally stabilizes. This gap is small and does not affect the pouring of concrete.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters, characterized in that: It includes an upper plate fixing part (1) and a plate body (2). The upper plate fixing part (1) includes a transverse structure (11) fixed on the core reinforcement (3) and a vertical rod (12) fixed at the center of the transverse structure. The plate body (2) includes several arc-shaped steel plates (21) of the same shape and a compression spring (22) connecting the single arc-shaped steel plate (21) and the vertical rod (12). Several arc-shaped steel plates (21) are assembled to form a single circular steel plate.

2. The core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 1, characterized in that: The arc of the arc-shaped steel support plate (21) is less than 180°.

3. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 1, characterized in that: The arc-shaped steel pallet (21) has an arc of 120°, and there are three arc-shaped steel pallets (21).

4. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 1, characterized in that: The bottom of the vertical rod (12) and the bottom of each arc-shaped steel support plate (21) are provided on the guide rod (23), and the top surface of the guide rod (23) is located on the same horizontal plane.

5. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 4, characterized in that: The guide rod (23) is adjustable in length and is formed by stacking two U-shaped channel steels. It includes a plug rod and a support rod. The end of the plug rod extending outward is provided with a baffle (24). The height of the baffle (24) is greater than the thickness of the arc-shaped steel support plate (21).

6. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 5, characterized in that: The bottom of the arc-shaped steel support plate (21) is provided with a short guide rod, which is located within the U-shaped groove of the guide rod (23).

7. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in claim 5, characterized in that: The transverse structure (11) is made of several steel bars and hooked to the core filling steel bars (3) on both sides.

8. A core support plate for prestressed concrete bamboo-joint piles with different inner diameters as described in any one of claims 1 to 7, characterized in that: The thickness of the arc-shaped steel support plate (21) is 3mm.

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