Combined pile foundation for reinforcing prestressed pipe pile
By using a combination structure of steel grouting pipes, steel rods, steel plates, push blocks, insert plates, and drill bits, the problem of insufficient bearing capacity of pile foundations in landfill site foundation treatment was solved, achieving efficient and economical improvement of pile foundation stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-10
AI Technical Summary
In landfill foundation treatment, existing technologies suffer from problems such as large treatment areas and varying treatment depths leading to high costs and long construction periods, as well as insufficient bearing capacity of pile foundations in landfill soil layers.
The system employs a combination structure of steel grouting pipes, steel rods, steel plates, push blocks, insert plates, and drill bits. By rotating the steel rods, the push blocks rotate to output thrust, causing the insert plates to extend out of the steel plates, thus increasing the robustness of the steel grouting pipes. The drill bits then quickly penetrate to the bottom layer. Simultaneously, the steel grouting pipes and ground anchors are used to strengthen the stability of the pile foundation, while casings and ring-shaped support plates are used to support the reinforcing cage and prevent tilting.
It improves the stability and efficiency of prestressed concrete pipe piles, reduces foundation treatment costs and construction period, and enhances the overall stability of the pile foundation.
Smart Images
Figure CN224106455U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of building engineering, in particular to a combined pile foundation for reinforcing prestressed pipe piles. BACKGROUND
[0002] With the development of cities, the demand for building land is also increasing, and some poor geological conditions of the foundation are gradually paid attention to, especially deep building waste or domestic waste landfill sites.
[0003] The components of the waste landfill site are different, the particle sizes are different, the pore sizes between the particles are different, and the compressibility is high. Therefore, the soil replacement method or the grouting reinforcement method is usually used for foundation treatment. However, when the foundation treatment area is large and the treatment depth difference is large, the foundation treatment cost is too high, and the construction period is too long.
[0004] When the pile foundation or the composite pile foundation is used for pile foundation treatment, negative pressure resistance is easily generated in the soil layer formed in the waste landfill site, and the bearing capacity is insufficient.
[0005] Therefore, the application provides a combined pile foundation for reinforcing prestressed pipe piles. CONTENT OF THE UTILITY MODEL
[0006] The combined pile foundation for reinforcing prestressed pipe piles provided by the application solves the problems in the background art. The steel grouting flower pipe one, the steel rod, the steel plate, the push block, the insert plate and the drill bit are arranged. The steel rod drives the multiple push blocks to rotate. The push block outputs the thrust. Under the action of the thrust, the insert plate extends out of the steel plate. The insert plate increases the firmness of the steel grouting flower pipe one, thereby enhancing the stability of the prestressed pipe pile. The drill bit can be inserted into the steel grouting flower pipe one more quickly and conveniently, penetrate into the bottom layer, improve the use efficiency and increase the stability.
[0007] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:
[0008] The combined pile foundation for reinforcing prestressed pipe piles comprises a foundation part and a pipe pile part. The foundation part comprises an upper structure foundation, a plain concrete cushion layer, a waste landfill layer and a bearing stratum soil body from top to bottom. The pipe pile part comprises a prestressed pipe pile, a steel pipe pile and a steel reinforcement cage. A steel grouting flower pipe one is arranged in the steel reinforcement cage. A steel rod is arranged in the steel grouting flower pipe one. A steel plate is fixedly connected to the bottom end of the steel grouting flower pipe one. The bottom end of the steel rod is rotatably connected to the steel plate.
[0009] As a preferred embodiment, the steel rod is externally and internally fixedly connected to multiple push blocks. The steel plate is internally slidably connected to multiple insert plates. Each push block is abutted to an insert plate.
[0010] Through setting the steel grouting flower pipe one, the steel pole, the steel plate, the push block, the plug plate and the drill bit, rotating the steel pole drives multiple push blocks to rotate, the push block outputs the thrust, under the action of the thrust, the plug plate extends out of the steel plate, the plug plate increases the firmness of the steel grouting flower pipe one, thereby the stability of the prestressed pipe pile is strengthened, thereby the practicality of the device is improved.
[0011] As a preferred implementation form, the bottom of the steel plate is fixedly connected with a drill bit, and the bottom end of the drill bit is drilled into the pile end grouting reinforcement body;
[0012] Through the drill bit, the steel grouting flower pipe one can be inserted more quickly and conveniently, penetrate into the bottom layer, improve the use efficiency and increase the stability, thereby the practicality of the device is improved.
[0013] As a preferred implementation form, two steel grouting flower pipes two are arranged between the prestressed pipe pile and the steel pipe pile, and the bottom ends of the two steel grouting flower pipes two are fixedly connected with ground anchors;
[0014] Through setting the steel grouting flower pipe two and the ground anchor, the two steel grouting flower pipes two are located between the prestressed pipe pile and the steel pipe pile and are distributed on both sides, the ground anchor has the ground holding property, can consolidate and strengthen the stability of the whole pile foundation, thereby the practicality of the device is improved.
[0015] As a preferred implementation form, the steel grouting flower pipe one is externally provided with a sleeve, and the outer portion of the sleeve is provided with annular support plates;
[0016] Through setting the sleeve, the annular support plate and the connecting rod, multiple annular support plates are arranged on the inner side of the steel reinforcement cage, the outer portion of the annular support plate is tightly attached to the inner wall of the steel reinforcement cage, the annular support plate provides support force for the steel reinforcement cage, prevents the steel reinforcement cage from tilting, thereby the stability of the prestressed pipe pile is better consolidated, the stability of the prestressed pipe pile is strengthened, thereby the practicality of the device is improved.
[0017] As a preferred implementation form, each annular support plate is fixedly connected with the sleeve through the connecting rod, and each annular support plate is connected with the steel reinforcement cage;
[0018] Through setting the connecting rod, the two ends of the connecting rod are respectively welded with the sleeve and the annular support plate, and the stability is high, thereby the practicality of the device is improved.
[0019] The beneficial effects of the present application are as follows:
[0020] 1. The reinforced prestressed pipe pile combined pile foundation is characterized in that a steel grouting flower pipe one, a steel rod, a steel plate, a push block, an insertion plate and a drill bit are arranged, the steel rod is rotated to drive multiple push blocks to rotate, the push block outputs a pushing force, under the action of the pushing force, the insertion plate extends out of the steel plate, the insertion plate is used to increase the firmness of the steel grouting flower pipe one, thereby the stability of the prestressed pipe pile is strengthened, the drill bit can be inserted into the steel grouting flower pipe one more quickly and conveniently, penetrate into the bottom layer, improve the use efficiency and increase the stability, two steel grouting flower pipes two are arranged between the prestressed pipe pile and the steel pipe pile, are distributed on both sides, the ground anchor has a good grip, can consolidate and strengthen the stability of the whole pile foundation, and greatly improve the practicability of the device.
[0021] 2. The reinforced prestressed pipe pile combined pile foundation is characterized in that a sleeve, an annular support plate and a connecting rod are arranged, multiple annular support plates are arranged on the inner side of the steel reinforcement cage, the outer part of the annular support plate is close to the inner wall of the steel reinforcement cage, and the annular support plate provides support for the steel reinforcement cage and prevents the steel reinforcement cage from tilting, thereby the stability of the prestressed pipe pile is better consolidated, and the stability of the prestressed pipe pile is further strengthened, and the practicability of the device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the device of the present application.
[0023] Figure 2 It is an enlarged view of A in the present application. Figure 1
[0024] Figure 3 It is a top view of the prestressed pipe pile of the device of the present application.
[0025] Figure 4 It is a demonstration diagram of the insertion plate of the device of the present application.
[0026] Marked numbers in the figure: 1, upper structure foundation; 2, plain concrete cushion layer; 3, landfill layer; 4, bearing stratum soil; 5, pile end grouting reinforcement; 6, prestressed pipe pile; 7, steel pipe pile; 8, steel reinforcement cage; 9, steel grouting flower pipe one; 10, steel rod; 11, steel plate; 12, push block; 13, insertion plate; 14, drill bit; 15, steel grouting flower pipe two; 16, ground anchor; 17, sleeve; 18, annular support plate; 19, connecting rod. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0028] Reference Figures 1-4 The utility model provides a kind of combined pile foundation of reinforced prestressed pipe pile, including foundation part and pipe pile part, foundation part is from top to bottom including upper structure foundation 1, plain concrete cushion 2, landfill layer 3, bearing stratum soil 4, pipe pile part includes prestressed pipe pile 6, steel pipe pile 7 and reinforcing cage 8, a steel grouting flower pipe one 9 is inserted in the inside of reinforcing cage 8, a steel pole 10 is arranged in the inside of steel grouting flower pipe one 9, steel plate 11 is fixedly connected at the bottom end of steel grouting flower pipe one 9, and the bottom end of steel pole 10 is rotatably connected with steel plate 11.
[0029] With reference to Figures 1-4 A plurality of push blocks 12 are fixedly connected to the outside of the steel pole 10 and inside the steel plate 11, a plurality of insertion plates 13 are slidably connected to the inside of the steel plate 11, and each push block 12 abuts against an insertion plate 13.
[0030] With reference to Figure 1 , 2 A drill bit 14 is fixedly connected to the bottom of the steel plate 11, and the bottom end of the drill bit 14 is drilled into the pile-end grouting reinforcement 5.
[0031] With reference to Figures 1-3 Two steel grouting flower pipes two 15 are inserted between the prestressed pipe pile 6 and the steel pipe pile 7, and a ground anchor 16 is fixedly connected to the bottom end of each steel grouting flower pipe two 15.
[0032] With reference to Figures 1-3 A sleeve 17 is placed outside the steel grouting flower pipe one 9, and an annular support plate 18 is arranged outside the sleeve 17.
[0033] With reference to Figures 1-3Each annular support plate 18 is fixedly connected with the sleeve 17 through a connecting rod 19, and each annular support plate 18 is connected with the steel reinforcement cage 8; the connecting rod 19 is welded at both ends thereof with the sleeve 17 and the annular support plate 18, and has high stability, thereby improving the practicability of the device.
[0034] Working principle: through the setting of the steel grouting flower pipe 9, the steel pole 10, the steel plate 11, the push block 12, the plug plate 13 and the drill bit 14, the steel grouting flower pipe 9 is inserted into the bottom layer more quickly and conveniently, the use efficiency is improved, and the stability is increased; through the setting of the steel grouting flower pipe 15 and the ground anchor 16, two steel grouting flower pipes 15 are located between the prestressed pipe pile 6 and the steel pipe pile 7 and are distributed on both sides; the ground anchor 16 has good grip, and can consolidate and strengthen the stability of the whole pile foundation; through the setting of the sleeve 17, the annular support plate 18 and the connecting rod 19, a plurality of annular support plates 18 are arranged on the inner side of the steel reinforcement cage 8; the outer part of the annular support plate 18 is tightly attached to the inner wall of the steel reinforcement cage 8, and provides support force for the steel reinforcement cage 8, so as to prevent the steel reinforcement cage 8 from tilting, thereby better consolidating the stability of the prestressed pipe pile 6, and improving the stability of the prestressed pipe pile 6.
[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A composite pile foundation for a reinforced prestressed pipe pile comprising a ground portion and a pipe pile portion, characterized in that, The foundation part comprises from top to bottom a superstructure foundation (1), a plain concrete cushion layer (2), a landfill layer (3), and a bearing stratum (4), and the pipe pile part comprises prestressed pipe piles (6), steel pipe piles (7), and steel reinforcement cages (8), the steel reinforcement cage (8) is internally provided with a steel grouting flower pipe (9), the steel grouting flower pipe (9) is internally provided with a steel rod (10), the bottom end of the steel grouting flower pipe (9) is fixedly connected with a steel plate (11), and the bottom end of the steel rod (10) is rotatably connected with the steel plate (11).
2. The combined pile foundation of the reinforced prestressed pipe pile according to claim 1, characterized in that, The steel rod (10) is externally and internally fixedly connected with a plurality of push blocks (12) and a plurality of insertion plates (13), and each push block (12) and insertion plate (13) abut each other.
3. The combined pile foundation of the reinforced prestressed pipe pile according to claim 1, characterized in that, The bottom of the steel plate (11) is fixedly connected with a drill bit (14), and the bottom end of the drill bit (14) is drilled into the pile end grouting reinforcement body (5).
4. The combined pile foundation of the reinforced prestressed pipe pile according to claim 1, characterized in that, Two steel grouting flower pipes (15) are inserted between the prestressed pipe piles (6) and the steel pipe piles (7), and the bottom ends of the two steel grouting flower pipes (15) are fixedly connected with ground anchors (16).
5. The combined pile foundation of the reinforced prestressed pipe pile according to claim 1, characterized in that, The steel grouting flower pipe (9) is externally provided with a sleeve pipe (17), and the external surface of the sleeve pipe (17) is provided with annular support plates (18).
6. The combined pile foundation of the reinforced prestressed pipe pile according to claim 5, characterized in that, Each annular support plate (18) and the sleeve pipe (17) are fixedly connected through a connecting rod (19), and each annular support plate (18) is connected with the steel reinforcement cage (8).