Cast-in-place pile head structure
By designing the pile head structure of the cast-in-place pile and using a combination of isolation sleeves, breaking tubes, and breaking teeth, the problems of low efficiency and high cost in traditional methods were solved, and the effect of rapid pile head breaking was achieved.
Patent Information
- Application Number
- CN202520390256.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Traditional methods for breaking up pile heads are inefficient and costly, and it is difficult to quickly separate the reinforcing steel from the solidified concrete.
A pile head structure for cast-in-place piles is designed, which adopts a combination of isolation sleeve, breaking tube and breaking teeth. The pile head is broken from the inside of the concrete by breaking teeth in the breaking tube. Combined with protective ring and sealing plate, etc., concrete flow out and obstruction are prevented, so as to achieve rapid breaking.
It enables rapid and effective pile head breaking, avoiding direct contact and outflow of concrete, thus improving breaking efficiency and reducing costs.
Smart Images
Figure CN223805523U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cast-in-place pile technical field, concretely relates to a cast-in-place pile head structure. BACKGROUND
[0002] The cast-in-place pile is a kind of deep foundation structure formed by drilling hole in foundation, placing reinforcement cage and pouring concrete, and is widely used in high-rise building, bridge, port and other engineering.
[0003] Pile head refers to the part connected with pile top and pile cap, and it needs to be broken to design elevation after concrete solidification, and expose reinforcement to anchor with pile cap.The traditional breaking method is mostly artificial chiseling or mechanical cutting, and there are problems of low efficiency and high cost. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a cast-in-place pile head structure, which can quickly break pile head.
[0005] To solve the above technical problems, the utility model adopts the following scheme:
[0006] A kind of cast-in-place pile head structure, pile head bottom end is located at the top of cast-in-place pile main body, including pile head reinforcement, the pile head reinforcement is equipped with isolation sleeve, and pile head bottom end is equipped with breaking pipe, and there are multiple breaking teeth in breaking pipe along the axial direction, which can be extended to the outside of breaking pipe.Its role is that, by the setting of isolation sleeve, it can avoid the difficulty of separation with the concrete after solidification caused by the direct contact of pile head reinforcement with concrete;By the setting of breaking pipe and breaking tooth, it can damage the concrete from inside the concrete after pouring is completed, so that the pile head can be broken quickly.
[0007] Further, the top of the pile head bottom end is provided with a protective ring, and the breaking pipe is arranged through the protective ring, and all the pile head reinforcement and the breaking tooth are located in the internal cavity of the protective ring.Its role is that, by the setting of protective ring, it can limit the concrete in the internal cavity of protective ring, avoid the concrete to block the front and rear ends of breaking pipe and avoid the concrete to flow out from the gap at the height of breaking pipe.
[0008] Further, the breaking pipes are arranged in a staggered manner, and the pile head reinforcement is located in the staggered gap of the breaking pipes.Its role is that, by the design of the spatial relationship between breaking pipe and pile head reinforcement, it can avoid the pile head reinforcement to hinder the extension of breaking tooth.
[0009] Further, the breaking pipe includes a transverse breaking pipe and a longitudinal breaking pipe, the transverse breaking pipe is arranged vertically with the longitudinal breaking pipe, the transverse breaking pipe and the longitudinal breaking pipe are arranged vertically with the pile head reinforcement, and the transverse breaking pipe and the longitudinal breaking pipe are located at different heights of the pile head reinforcement.
[0010] Further, the breaking pipe is hinged with the breaking tooth, and a through hole for the breaking tooth to extend out is arranged on the side wall of the breaking pipe near the breaking tooth.
[0011] Further, the breaking pipe is hinged with the breaking tooth, and a through hole for the breaking tooth to extend out is arranged on the side wall of the breaking pipe near the breaking tooth.
[0012] Further, the breaking tooth is in the shape of a column with a fan-shaped cross section, and the breaking tooth comprises a large arc surface and a small arc surface, and a side plane is arranged between the large arc surface and the small arc surface, the side end of the side plate is close to the small arc surface, and the shape and size of the side end of the side plate are the same as those of the small arc surface.
[0013] Further, the breaking pipe is hinged with the breaking tooth, and a through hole for the breaking tooth to extend out is arranged on the side wall of the breaking pipe near the breaking tooth.
[0014] Further, the breaking pipe comprises an upper half pipe and a lower half pipe which are symmetrically arranged on the two sides of a plane perpendicular to the symmetry plane, the concave surface of the upper half pipe is provided with an upper half shaft, the concave surface of the lower half pipe is provided with a lower half shaft, the upper half shaft and the lower half shaft are coaxially arranged, and in the state that the upper half pipe and the lower half pipe form the breaking pipe, the breaking tooth is sleeved outside the whole formed by the upper half shaft and the lower half shaft.
[0015] Further, the lower half shaft is provided with a threaded hole for threadedly connecting with a bolt, the upper half shaft is provided with a through hole coaxially arranged with the threaded hole, and the end of the upper half shaft away from the lower half shaft is provided with a sink for the head of the bolt to enter.
[0016] The utility model discloses have the beneficial effect:
[0017] 1. By the setting of the isolation sleeve, the pile head reinforcing steel bar can be prevented from directly contacting with the concrete, and the pile head reinforcing steel bar is difficult to separate from the solidified concrete, and by the setting of the breaking pipe and the breaking tooth, the concrete can be broken from the inside of the cast body after pouring, so that the pile head can be broken quickly.
[0018] 2、By the setting of the protective ring, the concrete can be limited in the internal cavity of the protective ring, avoiding the concrete from blocking the front and rear ends of the breaking pipe and from flowing out from the gap at the height of the breaking pipe;
[0019] 3、By the setting of the sealing plate, the concrete can be avoided from entering into the breaking pipe through the through port; by the setting of the cover plate and the side plate, the concrete can be further avoided from entering into the gap between the breaking tooth and the breaking pipe. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment 1;
[0021] Figure 2 is a schematic diagram of the sectional structure of the embodiment 1;
[0022] Figure 3 is a schematic diagram of the sectional structure of the embodiment 1; Figure 2 is a schematic diagram of the enlarged structure at A in the embodiment 1;
[0023] Figure 4 is a schematic diagram of the three-dimensional structure of the breaking pipe (not including the upper half pipe) in the embodiment 1;
[0024] Figure 5 is a schematic diagram of the sectional structure of the breaking pipe (not including the upper half pipe) in the embodiment 1; Figure 4 is a schematic diagram of the enlarged structure at B in the embodiment 1.
[0025] Fig. 1 is a pile head steel bar; Fig. 2 is an isolation sleeve; Fig. 3 is a breaking pipe; Fig. 4 is a breaking tooth; Fig. 5 is a protective ring; Fig. 6 is a through port; Fig. 7 is a cover plate; Fig. 8 is a side plate; Fig. 9 is a sealing plate; Fig. 10 is a small arc surface; Fig. 11 is an upper half pipe; Fig. 12 is a lower half pipe; Fig. 13 is an upper half shaft; Fig. 14 is a lower half shaft; Fig. 15 is a threaded hole; Fig. 16 is a through hole; Fig. 17 is a sink; and Fig. 18 is a bored pile body. DETAILED DESCRIPTION
[0026] The utility model will be further described in combination with the embodiments and the drawings, but the implementation mode of the utility model is not limited to this.
[0027] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom" and the like are based on the directions or position relations shown in the drawings, or are the directions or position relations commonly placed when the utility model product is used, which are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific direction, a specific direction structure and operation, and therefore cannot be understood as limiting the utility model.
[0028] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '', '' open '', '' install '', '' connect '', '' connection '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood in the utility model with the specific meaning of the specific circumstances.
[0029] Embodiment 1
[0030] A bored pile pile head structure, as shown in Figure 1 The bottom end of the pile head is arranged at the top of the bored pile body 18, comprising pile head reinforcement 1, the pile head reinforcement 1 is sleeved with an isolation sleeve 2, a breaking pipe 3 is arranged on the bottom end of the pile head, and a plurality of breaking teeth 4 that can be extended out of the breaking pipe 3 are arranged in the breaking pipe 3 in the axial direction. Its role is that, through the setting of the isolation sleeve 2, the direct contact of the pile head reinforcement 1 with the concrete can be avoided, and the separation of the pile head reinforcement 1 from the solidified concrete is difficult;Through the setting of the breaking pipe 3 and the breaking tooth 4, the concrete inside the cast-in-place concrete can be broken after pouring, so that the pile head can be broken quickly.
[0031] Specifically, as shown in Figure 1 The top of the bottom end of the pile head is provided with a protective ring 5, the breaking pipe 3 penetrates the protective ring 5, and all the pile head reinforcement 1 and the breaking tooth 4 are located in the internal cavity of the protective ring 5. Its role is that, through the setting of the protective ring 5, the concrete can be limited in the internal cavity of the protective ring 5, and the front and rear ends of the breaking pipe 3 are prevented from being blocked by the concrete, and the concrete is prevented from flowing out from the gap at the height of the breaking pipe 3.
[0032] Specifically, as shown in Figure 1 The breaking pipes 3 are arranged in a staggered manner, and the pile head reinforcement 1 is located in the staggered gap of the breaking pipes 3. Its role is that, through the design of the spatial relationship between the breaking pipe 3 and the pile head reinforcement 1, the pile head reinforcement 1 can be prevented from hindering the extension of the breaking tooth 4.
[0033] Specifically, as shown in Figure 2 The breaking pipe 3 comprises a transverse breaking pipe 3 and a longitudinal breaking pipe 3, the transverse breaking pipe 3 and the longitudinal breaking pipe 3 are arranged perpendicularly, the transverse breaking pipe 3 and the longitudinal breaking pipe 3 are arranged perpendicularly with the pile head reinforcement 1, and the transverse breaking pipe 3 and the longitudinal breaking pipe 3 are located at different heights of the pile head reinforcement 1.
[0034] Specifically, as shown in Figure 3As shown in the figure, the breaking pipe 3 is hinged with the breaking tooth 4, and the breaking pipe 3 is provided with an opening 6 on the side wall near the breaking tooth 4 for the breaking tooth 4 to extend out. Its function is that by the hinged arrangement of the breaking tooth 4 and the breaking pipe 3, any rod (such as a steel bar) can be inserted into the breaking pipe 3, and the breaking tooth 4 can be pushed out of the opening 6.
[0035] Specifically, as shown in the figure, Figure 3 The breaking pipe 3 is provided with a cover plate 7 closely attached to the upper and lower surfaces of the breaking tooth 4, the cover plate 7 is provided with a side plate 8 for closing the rear end of the breaking tooth 4, and the opening 6 is embedded with a sealing plate 9 for closing the opening 6 during pouring. Its function is that by the arrangement of the sealing plate 9, the concrete can be prevented from entering the breaking pipe 3 through the opening 6; by the arrangement of the cover plate 7 and the side plate 8, the concrete can be further prevented from entering the gap between the breaking tooth 4 and the breaking pipe 3.
[0036] Specifically, as shown in the figure, Figure 5 The breaking tooth 4 is in the shape of a cylinder with a fan-shaped cross section, the breaking tooth 4 includes a large arc surface and a small arc surface 10, a side plane is provided between the large arc surface and the small arc surface 10, the side end of the side plate 8 closely abuts the small arc surface 10, and the shape and size of the side end of the side plate 8 are the same as those of the small arc surface 10. Its function is that by the close design of the side plate 8 and the small arc surface 10, the rotation of the small arc surface 10 can be prevented from being hindered by the side plate 8, and the concrete can be prevented from seeping in the gap between the side plate 8 and the small arc surface 10.
[0037] Specifically, as shown in the figure, Figure 4 The breaking pipe 3 is provided with a symmetry plane, the axis of the breaking pipe 3 is located in the symmetry plane, and the breaking tooth 4, the opening 6, the cover plate 7, the side plate 8, and the sealing plate 9 are symmetrically arranged on opposite sides of the symmetry plane.
[0038] Specifically, as shown in the figure, Figure 3 The breaking pipe 3 includes an upper half pipe 11 and a lower half pipe 12 symmetrically arranged on both sides of a plane perpendicular to the symmetry plane, the upper half pipe 11 is provided with an upper half shaft 13 in the concave surface, the lower half pipe 12 is provided with a lower half shaft 14 in the concave surface, the upper half shaft 13 and the lower half shaft 14 are coaxially arranged, and in the state that the upper half pipe 11 and the lower half pipe 12 form the breaking pipe 3, the breaking tooth 4 is sleeved outside the whole formed by the upper half shaft 13 and the lower half shaft 14. Its function is that the arrangement of the upper half pipe 11, the lower half pipe 12, the upper half shaft 13, and the lower half shaft 14 can realize the installation of the breaking tooth 4 in the breaking pipe 3.
[0039] Specifically, as shown in the figure, Figure 3As shown, the lower half shaft 14 is provided with a threaded hole 15 for threadedly connecting with a bolt, the upper half shaft 13 is provided with a through hole 16 coaxially arranged with the threaded hole 15, and the upper half shaft 13 is provided with a counterbore 17 at an end away from the lower half shaft 14 for the head of the bolt to enter. Through the arrangement of the bolt hole, the through hole 16 and the counterbore 17, the upper half pipe 11 and the lower half pipe 12 can be conveniently connected by the bolt.
[0040] The working principle of the embodiment is described as follows: first, the protection ring 5 provided with the breaking pipe 3 is placed at a preset pile head bottom end height, then during the pouring of the concrete, the concrete is poured into the protection ring 5, after the concrete is solidified, an arbitrary slender rod-shaped object (such as a reinforcing bar on the construction site) is used to axially extend into the breaking pipe 3, the side wall of the symmetrically arranged breaking tooth 4 is pushed, the breaking tooth 4 is turned outwards of the breaking pipe 3, the cover is pushed out of the seal, at the same time, the breaking tooth 4 is pushed to open the cover plate 9 and is pushed into the concrete in the protection ring 5, thereby breaking the structure of the concrete from the inside, then the section of the breaking pipe 3 located outside the protection ring 5 can be pushed, the protection ring 5 is shaken around its axis, thereby facilitating the breaking of the concrete above the pile head bottom end.
[0041] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, according to the technical essence of the present application, any simple modification, equivalent replacement and improvement of the above embodiment within the spirit and principles of the present application still belongs to the protection scope of the technical scheme of the present application.
Claims
1. A pile head structure for a cast-in-place pile, the pile head having a bottom end located at a top of a cast-in-place pile body (18), comprising a pile head reinforcement (1), characterised in that: The pile head steel bar (1) is sleeved with an isolation sleeve (2), and a breaking pipe (3) is arranged at the bottom end of the pile head, and a plurality of breaking teeth (4) are arranged in the breaking pipe (3) and can be extended out of the breaking pipe (3).
2. A pile head structure for a cast-in-place pile according to claim 1, wherein: A protective ring (5) is arranged at the top of the bottom end of the pile head, and the breaking pipe (3) penetrates through the protective ring (5), and all the pile head steel bars (1) and the breaking teeth (4) are arranged in the internal cavity of the protective ring (5).
3. A pile head structure according to claim 2, wherein: The breaking pipes (3) are arranged in an interlaced manner, and the pile head steel bars (1) are arranged in the interlaced gaps of the breaking pipes (3).
4. The pile head structure of claim 1, wherein: The breaking pipe (3) comprises a transverse breaking pipe (3) and a longitudinal breaking pipe (3), the transverse breaking pipe (3) is arranged perpendicularly to the longitudinal breaking pipe (3), the transverse breaking pipe (3) and the longitudinal breaking pipe (3) are arranged perpendicularly to the pile head steel bar (1), and the transverse breaking pipe (3) and the longitudinal breaking pipe (3) are arranged at different heights of the pile head steel bar (1).
5. The pile head structure of claim 1, wherein: The breaking pipe (3) is hinged with the breaking teeth (4), and the breaking pipe (3) is provided with a through port (6) on the side wall near the breaking teeth (4) for the breaking teeth (4) to extend out.
6. A pile head structure according to claim 5, wherein: The breaking pipe (3) is provided with a cover plate (7) closely attached to the upper and lower surfaces of the breaking teeth (4), the cover plate (7) is provided with a side plate (8) for closing the rear end of the breaking teeth (4), and the through port (6) is embedded with a sealing plate (9) for closing the through port (6) during pouring.
7. A pile head structure according to claim 6, wherein: The breaking teeth (4) are in the shape of a column with a fan-shaped cross section, the breaking teeth (4) comprise a large arc surface and a small arc surface (10), a side plane is arranged between the large arc surface and the small arc surface (10), the side end of the side plate (8) is closely attached to the small arc surface (10), and the shape and size of the side end of the side plate (8) are the same as those of the small arc surface (10).
8. A pile head structure according to claim 6, wherein: The breaking pipe (3) is provided with a symmetry plane, the axis of the breaking pipe (3) is located in the symmetry plane, and the breaking teeth (4), the through port (6), the cover plate (7), the side plate (8) and the sealing plate (9) are symmetrically arranged on opposite sides of the symmetry plane.
9. A pile head structure according to claim 8, wherein: The breaking pipe (3) comprises an upper half pipe (11) and a lower half pipe (12) symmetrically arranged on both sides of a plane perpendicular to the symmetry plane, the upper half pipe (11) is provided with an upper half shaft (13) in the concave surface, the lower half pipe (12) is provided with a lower half shaft (14) in the concave surface, the upper half shaft (13) and the lower half shaft (14) are coaxially arranged, and in the state that the upper half pipe (11) and the lower half pipe (12) form the breaking pipe (3), the breaking teeth (4) are sleeved outside the whole formed by the upper half shaft (13) and the lower half shaft (14).
10. A pile head structure according to claim 9, wherein: The lower half shaft (14) is provided with a threaded hole (15) for threadedly connecting with a bolt, the upper half shaft (13) is provided with a through hole (16) coaxially arranged with the threaded hole (15), and the upper half shaft (13) is provided with a sink (17) at one end away from the lower half shaft (14) for the head of the bolt to enter.