Supporting plate device for core grouting of prefabricated pipe pile

Abstract

The utility model provides a supporting plate device for prefabricated pipe pile core grouting, which comprises a prefabricated pipe pile and a reinforcement cage, the prefabricated pipe pile comprises a core grouting part and a cavity part which are pressed into a soil layer structure, and a connecting part connected with a bearing platform; the wood supporting plate is located at the bottom of the reinforcement cage and fixedly connected with the reinforcement cage, and the wood supporting plate stretching into the set height of the prefabricated pipe pile and the prefabricated pipe pile are poured to form a core grouting cavity; the reinforcement cage extends outwards to form a plurality of clamping parts supported by the prefabricated pipe pile, the wood supporting plate and the reinforcement cage are supported in the prefabricated pipe pile in a suspended mode through the clamping parts, and hoisting parts are formed in the positions, deviating from the circle center of the prefabricated pipe pile, of the clamping parts; the device further comprises a hopper used for pouring the core filling cavity, and the clamping part forms a supporting part of the hopper at the staggered position of the hoisting part. According to the utility model, through the clamping part, the suspended wood supporting plate and the reinforcement cage are supported after the reinforcement cage extends, and through the supporting part, subsequent vibration and the like are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of core-filling auxiliary tools, in particular to a supporting plate device for core-filling prefabricated pipe piles. Background Art

[0002] In the existing technology, the core filling of prefabricated pipe piles is a local core filling. For example, for a 30m pipe pile, after the pipe pile is pressed into the soil layer to a certain length, it can reach the bearing layer. At this time, the prefabricated pipe piles within 3m of the top of the soil layer need to be poured, while the other parts of the lower soil layer are hollow structures. For pouring this part of the top, the existing technology mostly uses steel plates to form a support plate, and then uses a steel cage for pouring. However, in the existing pouring, such as the patent with publication number CN210421102U, which is named a support plate structure for pipe pile core filling concrete, when using it, when the vertical steel bars are installed to the bottom support plate, the manual direct installation operation is too difficult, and then a hanger is set in the middle, and the subsequent pouring and vibration will affect the use. Utility Model Content

[0003] The purpose of the utility model is to provide a supporting plate device for prefabricated pipe pile core pouring, which realizes multiple effects such as lifting and supporting through a simple clamping part, and avoids the problem that the center is difficult to vibrate after pouring.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions.

[0005] A supporting plate device for a prefabricated pipe pile core filling includes a prefabricated pipe pile and a steel cage. The prefabricated pipe pile includes a core filling portion pressed into a soil layer structure, a cavity portion, and a connection portion with a cap.

[0006] It also includes a wooden support plate located at the bottom of the steel cage and fixed thereto, the wooden support plate extending into the set height of the prefabricated pipe piles and the prefabricated pipe piles are cast to form a core cavity;

[0007] The steel cage extends outward to form a plurality of clamping parts supported by prefabricated pipe piles, and the wooden pallet and the steel cage are suspended and supported in the prefabricated pipe piles through the clamping parts. A hoisting part is formed on the clamping parts at a position deviated from the center of the prefabricated pipe piles.

[0008] It also includes a hopper for pouring the core cavity, and the clamping part forms a supporting part of the hopper at the offset position of the lifting part.

[0009] Furthermore, it also includes a lap joint portion overlapped on the clamping portion, and a support ring connected to the lap joint portion, the steel cage is located in the support ring, and the lap joint portion passes through the steel cage and is overlapped on the support ring.

[0010] Furthermore, the support ring includes an inner ring and an outer ring, the first end of the overlapping portion is connected to the inner ring, and the second end passes through the outer ring to form a suspended overlapping portion.

[0011] Furthermore, the inner ring segment between adjacent overlapping portions, or the outer ring segment between adjacent overlapping portions, or the overlapping portion between the inner ring and the outer ring forms a hanging portion.

[0012] Furthermore, the clamping portion is an inclined stirrup formed by extending the longitudinal stirrups on the steel cage, and from top to bottom, the inclined stirrups form a locking cavity with a reduced diameter.

[0013] Furthermore, the inclined stirrups form an angle of 60°-80° with the longitudinal extension line of the prefabricated pipe pile.

[0014] Furthermore, it also includes a connecting ring fixedly connected to the bottom of the wooden pallet, and the bottom of the steel cage passes through the through holes of the wooden pallet and is welded to the connecting ring.

[0015] Furthermore, the projection of the wooden pallet covers the projection of the connecting ring, and the outer periphery of the wooden pallet fits with the inner wall of the prefabricated pipe pile.

[0016] Furthermore, along the length direction, a plurality of limiting rings are fixedly connected to the outside of the steel cage, and the limiting rings form a limiting cavity of the steel cage along the transverse direction.

[0017] Furthermore, a plurality of abutting portions are fixedly provided on the outside of the limiting ring, and the abutting portions abut against the inner wall of the prefabricated pipe pile.

[0018] The beneficial effects of the utility model are as follows:

[0019] In the present invention, the extended clamping part is used to provide a certain support for the suspended wooden pallet and the steel cage, avoiding problems such as falling. The subsequent inclined setting of the clamping part, rather than the horizontal setting, provides a basis for the subsequent effective anchoring in the pedestal.

[0020] In the present invention, when the vertical steel bars of the steel cage are installed to the bottom support plate, manual operation is too difficult, so the bent hooks at the bottom of the vertical steel bars are optimized and fixed to the connecting ring at the bottom. Specifically, the longitudinal steel bars are passed through the through holes and then bent and fixed to the limiting ring, thereby improving stability.

[0021] In the prior art, the hanging rod in the middle is not conducive to the subsequent concrete pouring and vibration. The clamping part in the utility model is provided with a hoisting part, and a hopper is used for pouring to prevent contamination of the longitudinal steel bars next to it. The hoisting can be carried out using a hoisting rope.

[0022] In the present invention, multiple layers of wooden formwork are stacked to reach a thickness of 20 mm as wooden pallets to replace steel plates, achieving the green construction goal of waste material utilization while effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a support plate device for prefabricated pipe pile core filling provided by the utility model;

[0024] Figure 2 A cross-sectional view of a support plate device for prefabricated pipe pile core filling provided by the utility model;

[0025] Figure 3 The utility model provides Figure 2 A partial enlarged view of the

[0026] Figure 4 A schematic structural diagram of the clamping portion provided by the present invention;

[0027] In the picture:

[0028] 10. Prefabricated pipe pile; 20. Steel cage; 30. Wooden pallet; 40. Clamping part; 41. Hoisting part; 42. Support part; 43. Overlap part; 44. Support ring; 50. Connecting ring; 60. Limiting ring; 61. Abutment part; 70. Hopper. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0030] Refer to the attached Figure 1-3 As shown, a support plate device for prefabricated pipe pile core filling in this embodiment includes a prefabricated pipe pile 10 and a steel cage 20. In actual construction, the prefabricated pipe pile 10 includes a core filling part and a cavity part pressed into the soil structure, as well as a connection part with the base. As for the core filling, it is actually to fill the prefabricated pipe pile at a set height at the top. For example, a 30m prefabricated pipe pile needs to use micro-expansive concrete core filling at the top of the pile according to the specification requirements. The height of the core filling is 3m, which meets the specification requirements while saving materials to ensure efficiency.

[0031] In this embodiment, in order to achieve core pouring, a wooden pallet 30 is provided. The wooden pallet 30 is exactly the same as the inner diameter of the prefabricated pipe pile 10, or is 2-3mm smaller than the inner diameter of the prefabricated pipe pile, so that the wooden pallet 30 can enter the prefabricated pipe pile, but the slightly expansive concrete in the core pouring will not flow into the hollow part and then get stuck in the prefabricated pipe pile 10. For example, the diameter of the prefabricated pipe pile is 500mm, the wall thickness is 130mm, and the diameter of the hollow part in the pile is 240mm. The part filled by the prefabricated core pouring is the 240mm hollow position in the middle. Specifically, the use of wooden pallets reduces costs compared to steel plates. It is preferred to form wooden pallets from waste wooden formwork, which fully utilizes waste wooden formwork in construction and implements green construction.

[0032] For the steel cage 20, it passes through the wooden pallet 30, bends and is fixedly connected to the wooden pallet. Then, the wooden pallet 30 and the prefabricated pipe piles on the upper part form the entire core-filling cavity. For example, if a 3m core-filling cavity needs to be formed, it is only necessary to extend the wooden pallet to a depth of 3m.

[0033] In order to prevent the wooden pallet 30 from falling, in this embodiment, the steel cage 20 extends outward to form a plurality of clamping portions 40 supported by the prefabricated pipe pile 10. The wooden pallet 30 and the steel cage 20 are suspended and supported in the prefabricated pipe pile 10 via the clamping portions 40. A hoisting portion 41 is formed on the clamping portions 40 at a position offset from the center of the prefabricated pipe pile 10.

[0034] It also includes a hopper 70 for pouring the core cavity, and the clamping portion 40 forms a support portion 42 of the hopper 70 at the offset position of the lifting portion.

[0035] Compared with the prior art, in this embodiment, the extension of the steel cage is utilized to not only stabilize the suspended setting, but also the hoisting is deviated from the center of the prefabricated pipe pile, which will not affect the subsequent vibration and other operations.

[0036] In this embodiment, the clamping portion 40 is described in detail as follows:

[0037] First, in this embodiment, the clamping portion 40 also includes a lap portion 43 and a support ring 44. The support ring 44 forms a limit so that the entire steel cage 20 is located inside the support ring 44, and the lap portion 43 is well overlapped on the support ring and will not fall off, thereby realizing a cross-type assembly.

[0038] Secondly, this embodiment provides two types of support rings 44: an inner ring and an outer ring. One is located inside the steel cage 20 and the overlap 43, and the other is located outside the steel cage 20 and the overlap 43. The overlap 43 then connects the two rings and extends to form a suspended overlap 43. The overlap 43 is then larger, and the diameter of the circular ring formed by the overlap is larger than the diameter of the steel cage and smaller than the maximum diameter of the overlap, achieving a good overlap. In this embodiment, the hopper is supported by the inner ring.

[0039] Secondly, for the outer ring, inner ring and overlapping part, they can directly form a lifting part. For example, the inner ring segment between adjacent overlapping parts, the outer ring segment between adjacent overlapping parts, or the overlapping part between the inner ring and the outer ring can be used as a lifting part, and then used for the subsequent entire clamping part. It can be lifted here to complete the movement.

[0040] Again, in this embodiment, the clamping portion 40 is specifically an inclined stirrup extending from the longitudinal stirrups of the steel cage. From top to bottom, the inclined stirrup forms a locking cavity with a decreasing diameter. Specifically, when tilted, the inclined stirrup in this embodiment forms an angle of 60°-80° with the longitudinal extension of the precast pipe pile, preferably 75°.

[0041] The other structures are introduced as follows:

[0042] In this embodiment, a connecting ring 50 is further included, which is fixed to the bottom of the wooden pallet 30. The bottom of the steel cage 20 passes through the holes of the wooden pallet 30 and is welded to the connecting ring 50. The addition of the connecting ring not only ensures a secure connection between the bottom of the steel cage and the bottom of the wooden pallet, but also increases the strength of the bottom of the wooden pallet.

[0043] In this embodiment, the thickness of the wooden pallet 20 is preferably 15-20 mm, and the diameter of the wooden pallet is consistent with the inner diameter of the prefabricated pipe pile, or a smaller gap is formed, such as a 2-3 mm gap is formed between the wooden pallet and the prefabricated pipe pile 10, which facilitates the lowering of the wooden pallet and the steel cage into the prefabricated pipe pile while preventing the concrete from flowing into the small part of the cavity when pouring concrete into the core.

[0044] In order to ensure the strength support of the entire steel cage 20 and to make it evenly stressed, a plurality of limiting rings 60 can be fixed outside the steel cage along the length direction. The limiting rings 60 form a limiting cavity in the transverse direction of the steel cage 20.

[0045] In order to achieve abutment with the prefabricated pipe pile and provide better support during pouring, a plurality of abutment portions 61 are fixedly provided outside the limiting ring 60 , and the abutment portions 61 abut against the inner wall of the prefabricated pipe pile 10 .

[0046] The following is an introduction to the details of the assembly and each structure:

[0047] Refer to the attached Figure 1-2 As shown, a supporting plate device for prefabricated pipe pile core filling in this embodiment specifically includes the following parts:

[0048] Wooden pallet 30: In this embodiment, in order to make full use of waste materials, a wooden template is selected to make a wooden pallet, holes are opened on it to form perforations, and the longitudinal steel bars in the steel cage pass through the perforations and are connected to the connecting rings at the bottom; after the subsequent pouring is completed, the template and the connecting rings will be poured to form a cast core.

[0049] Steel cage 20: The steel cage in this embodiment is composed of longitudinal steel bars, a bottom limiting ring, a top support ring, and a middle vertical support ring (according to the specification requirements, when the pile head needs to be cut, it is generally 3 meters long);

[0050] In this embodiment, the bottom of the longitudinal reinforcement in the reinforcement cage 20 is connected to the wooden pallet 30, and the abutment portion formed by the extension of the top is an inclined longitudinal reinforcement, specifically forming an angle of 75° with the extension line of the original reinforcement cage. The abutment portion will be connected to the foundation reinforcement later.

[0051] Bottom limit ring (i.e., connecting ring 50): Welded to the longitudinal reinforcement, it limits the range of motion of the wooden pallet 30. Specifically, when concrete is poured, the wooden pallet abutting the precast pipe piles prevents the concrete from flowing downward, allowing it to solidify on the pallet, forming a stable structure. The concrete used in this process is preferably micro-expansive concrete. Even if technical parameters are adjusted with the precast pipe piles 10, such as creating a 2-3 mm gap, the concrete will not easily flow out of the smaller gap formed by the wooden pallet and the precast pipe piles.

[0052] Top support ring (i.e., clamping portion 40): supports the upper part of the outer wall of the pile to prevent the steel cage from falling further. Refer to the standard atlas and optimize it to a concentric circle structure; it facilitates concrete pouring and vibration.

[0053] Middle vertical support ring (i.e., limit ring 60): Starting from above the wooden pallet 30, one is set every 1m on the longitudinal steel bar to ensure the thickness of the vertical steel bar protective layer and limit the upward movement of the pallet during the lowering of the steel cage.

[0054] Lifting rope: Fix the lifting rope to the top support ring, then use machinery to lift the steel cage and lower it into the pile;

[0055] (1) Hopper: To prevent the top of the longitudinal reinforcement from being contaminated during concrete pouring, which would affect the quality of the subsequent connection with the foundation reinforcement.

[0056] The utility model makes full use of waste templates, reduces production costs, improves steel cage production efficiency, and ensures construction quality and safety. The utility model is suitable for various specifications of compression-resistant prefabricated pipe piles.

[0057] The process of using the support plate device in this embodiment is as follows:

[0058] (1) Construction of prefabricated pipe piles 10: Prefabricated pipe piles with a diameter of 500 mm are pressed into the soil layer, leaving a height of 50-100 mm, and the excess length of the pile head is cut off. The reserved height needs to be extended into the structural foundation later;

[0059] (2) Production of wooden pallet 30 device:

[0060] 1) Cut the support plate on the wooden template with the inner diameter of the pipe pile reduced by 2mm. Then, according to the layout principle of the longitudinal steel bars, make holes in the support plate to form 6 evenly arranged plum blossom-shaped holes with a diameter of 23mm.

[0061] 2) After passing 6 longitudinal steel bars through 1 top support ring and 3 middle vertical support rings, ensure that the total thickness of the support plate is about 20mm, insert the longitudinal steel bars into the holes of the support plate in sequence, and weld the bottom limit ring to the longitudinal steel bars. The support plate device is completed.

[0062] (3) Production of steel cage 20: Place stirrups into the longitudinal steel bars and weld them at intervals to complete the production of the steel cage.

[0063] (4) Lower steel cage 20: After tying the lifting rope to the top support ring, use machinery to lift the steel cage into the prefabricated pipe pile.

[0064] (5) Pipe pile core filling: Untie the lifting rope, insert the hopper into the top support ring, and use micro-expansion concrete that is one level stronger than the foundation concrete to fill the pipe pile core.

[0065] (6) Vibration: Pull out the hopper and insert the vibrating rod from the middle of the top support ring to ensure that the concrete is vibrated and compacted.

[0066] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0068] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A support plate device for prefabricated pipe pile core filling, comprising prefabricated pipe piles and a steel cage, characterized in that: The prefabricated pipe pile includes a core portion and a hollow portion pressed into the soil structure, and a connection portion with the foundation. It also includes a wooden support plate located at the bottom of the steel cage and fixed thereto, the wooden support plate extending into the set height of the prefabricated pipe piles and the prefabricated pipe piles are cast to form a core cavity; The steel cage extends outward to form a plurality of clamping parts supported by prefabricated pipe piles, and the wooden pallet and the steel cage are suspended and supported in the prefabricated pipe piles through the clamping parts. A hoisting part is formed on the clamping parts at a position deviated from the center of the prefabricated pipe piles. It also includes a hopper for pouring the core cavity, and the clamping part forms a supporting part of the hopper at the offset position of the lifting part.

2. A support plate device for prefabricated pipe pile core filling according to claim 1, characterized in that: It also includes a lap joint portion arranged on the clamping portion, and a support ring connected to the lap joint portion. The steel cage is located in the support ring, and the lap joint portion passes through the steel cage and is lapped on the support ring.

3. A support plate device for prefabricated pipe pile core filling according to claim 2, characterized in that: The support ring includes an inner ring and an outer ring. The first end of the overlapping portion is connected to the inner ring, and the second end passes through the outer ring to form a suspended overlapping portion.

4. A support plate device for prefabricated pipe pile core filling according to claim 3, characterized in that: The inner ring segments between adjacent overlapping portions, or the outer ring segments between adjacent overlapping portions, or the overlapping portion between the inner ring and the outer ring forms the hanging portion.

5. A supporting plate device for prefabricated pipe pile core filling according to claim 1, characterized in that: The clamping portion is an inclined stirrup formed by extending the longitudinal stirrups on the steel cage. From top to bottom, the inclined stirrups form a locking cavity with a reduced diameter.

6. A supporting plate device for prefabricated pipe pile core filling according to claim 5, characterized in that: The inclined stirrups form an angle of 60°-80° with the longitudinal extension line of the prefabricated pipe pile.

7. A support plate device for prefabricated pipe pile core filling according to claim 1, characterized in that: It also includes a connecting ring fixedly connected to the bottom of the wooden support plate, and the bottom of the steel cage passes through the through holes of the wooden support plate and is welded to the connecting ring.

8. A supporting plate device for prefabricated pipe pile core filling according to claim 7, characterized in that: The projection of the wooden pallet covers the projection of the connecting ring, and the outer periphery of the wooden pallet fits with the inner wall of the prefabricated pipe pile.

9. The supporting plate device for prefabricated pipe pile core filling according to claim 1, characterized in that: Along the length direction, a plurality of limiting rings are fixedly connected to the outside of the steel cage, and the limiting rings form a limiting cavity along the transverse direction of the steel cage.

10. A supporting plate device for prefabricated pipe pile core filling according to claim 9, characterized in that: A plurality of abutment parts are fixedly provided on the outside of the limiting ring, and the abutment parts abut against the inner wall of the prefabricated pipe pile.

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