Concrete-filled steel tube pile installed in plug-in mode

Abstract

The utility model relates to the technical field of pipe pile plug-in installation, and discloses a plug-in type installed steel pipe concrete pipe pile which comprises a pile end, a pile top is spliced at the top end of the pile end, the bottom end of the pile top is fixedly connected with a plug-in column, the outer wall of the plug-in column is plugged in the inner wall of the upper side of the pile end, and the outer wall of the middle of the pile end is fixedly connected with a supporting ring. A sliding shell is connected to the outward side of the upper side of the pile end through a connecting assembly, limiting balls are arranged on the four sides of the inner wall of the upper side of the pile end in a sleeving mode, outer layers are arranged on the inner walls of the pile end and the pile top, protective layers are arranged on the inward sides of the outer layers, and inner layers are arranged on the inward sides of the protective layers. According to the utility model, the pile top can be quickly mounted on the pile end, so that the mounting mode is more efficient and convenient, and multi-section mounting can reduce internal cavities, so that concrete is added more compactly, the interior of the pipe pile is layered, and the pipe pile can resist water and rust and is suitable for various environments.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile insertion and installation technology, and in particular to a steel pipe concrete pipe pile with insertion installation. Background Technology

[0002] Concrete-filled steel pipe piles are a type of composite foundation pile. They consist of a steel pipe filled with concrete. The steel pipe restrains the concrete, effectively increasing its compressive strength. Simultaneously, the concrete prevents local buckling of the steel pipe. Working in tandem, these two components make concrete-filled steel pipe piles suitable for various foundation conditions, including soft soil foundations. For instance, in the foundation construction of high-rise buildings, they can withstand large vertical loads. In port and wharf construction, they can also withstand the horizontal and vertical forces generated by ship berthing. Therefore, the ability to quickly assemble concrete-filled steel pipe piles is particularly important.

[0003] When constructing pipe piles, the pile tip is first inserted into the foundation surface, and then the pile top is installed on the pile tip. Traditionally, installing the pile top and pile tip requires complex welding or bolt connection equipment, which has certain limitations in narrow construction sites or under limited construction conditions, resulting in low work efficiency. Since the inside of the pipe pile is in contact with concrete and the outside is exposed to nature for a long time, traditional pipe piles are prone to rust.

[0004] In response to the technical problems of complex and difficult installation at the pile tip and pile top and the easy rusting of the pipe pile, this application proposes a plug-in installation method for steel pipe concrete pipe piles. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a plug-in installation steel pipe concrete pipe pile, which can quickly install the pile top on the pile end and the pipe pile is not easy to rust.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A plug-in type steel-concrete composite pipe pile includes a pile end, a pile top spliced ​​to the top of the pile end, a plug-in column fixedly connected to the bottom of the pile top, the outer wall of the plug-in column being inserted into the upper inner wall of the pile end, a support ring fixedly connected to the middle outer wall of the pile end, a sliding shell connected to the upper outer side of the pile end via a connecting assembly, limiting balls sleeved on all four sides of the upper inner wall of the pile end, and limiting grooves formed on all four sides of the middle inner wall of the plug-in column; both the inner walls of the pile end and the pile top are provided with an outer layer, a protective layer is provided on the inner side of the outer layer, and an inner layer is provided on the inner side of the protective layer.

[0008] Furthermore, the connecting assembly includes a sliding ring slidably connected to the upper outer wall of the pile end, and the upper inner wall of the sliding shell is fixedly connected to the outer wall of the sliding ring.

[0009] Furthermore, a spring is fixedly connected to the top end of the support ring, and the top end of the spring is fixedly connected to the bottom end of the sliding ring. The inner wall of the sliding shell can slide on the outer wall of the support ring.

[0010] Furthermore, the top of the pile is threaded with a cap for opening to add concrete to the pile end and the interior of the pile top.

[0011] Furthermore, a rectangular groove is formed on the inner wall of the upper side of the pile end corresponding to the outer wall of the limiting ball, and the diameter of the inner side of the rectangular groove is smaller than the diameter of the limiting ball.

[0012] Furthermore, a support frame is fixedly connected to both the pile end and the inner wall of the pile top, and the support frame is made of 304 stainless steel.

[0013] Furthermore, the outer layer, the protective layer, and the inner layer are all made of Q345 steel. The outermost layer is coated with paint, the protective layer contains epoxy resin, and the inner layer contains iron-nickel fibers.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the pile top can be quickly installed on the pile end by moving the limiting ball, without the need for complicated welding and bolt connection equipment. It is adaptable to various installation environments and conditions, making the installation method more efficient and convenient, saving workers' installation time and improving work efficiency.

[0016] 2. In this utility model, the multi-segment installation can reduce internal voids, making the added concrete more compact. By treating the inside of the pipe pile in layers, the pipe pile can be waterproofed and rustproofed, making it suitable for use in various environments and increasing its practicality. Attached Figure Description

[0017] Figure 1 This is a perspective view of a plug-in type steel pipe concrete pipe pile proposed in this utility model.

[0018] Figure 2 This utility model provides a structural diagram of the insertion column for a steel-concrete composite pipe pile with a plug-in installation method.

[0019] Figure 3 This is a structural diagram of a sliding shell for a plug-in type steel-concrete composite pipe pile proposed in this utility model.

[0020] Figure 4 This utility model presents a limiting ball structure diagram for a plug-in type installed steel pipe concrete pipe pile.

[0021] Figure 5This utility model presents a sliding ring structure diagram of a plug-in type steel pipe concrete pipe pile.

[0022] Figure 6 This invention provides a sectional view of the pile end and pile top of a steel-concrete composite pipe pile with plug-in installation.

[0023] Legend:

[0024] 1. Pile end; 2. Pile top; 3. Top cover; 4. Insertion column; 5. Sliding shell; 6. Support ring; 7. Sliding ring; 8. Limiting ball; 9. Limiting groove; 10. Spring; 11. Outer layer; 12. Protective layer; 13. Inner layer; 14. Support frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a plug-in type steel pipe concrete pipe pile, including a pile end 1, a pile top 2 spliced ​​to the top of the pile end 1, a plug-in column 4 fixedly connected to the bottom of the pile top 2, the outer wall of the plug-in column 4 being inserted into the upper inner wall of the pile end 1, a support ring 6 fixedly connected to the middle outer wall of the pile end 1, a sliding ring 7 slidably connected to the upper outer wall of the pile end 1, a sliding shell 5 fixedly connected to the outer wall of the sliding ring 7, and limiting balls 8 sleeved on all four sides of the upper inner wall of the pile end 1, wherein reference... Figure 5 Limiting grooves 9 are provided on all four sides of the inner wall of the insertion post 4. A spring 10 is fixedly connected to the top of the support ring 6. The top of the spring 10 is fixedly connected to the bottom of the sliding ring 7. The inner wall of the sliding shell 5 can slide on the outer wall of the support ring 6. (Refer to...) Figure 2 The top of the pile 2 is threaded with a top cover 3, which is used to open the top cover 3 to add concrete into the pile end 1 and the pile top 2. The inner wall of the upper side of the pile end 1 is provided with a rectangular groove corresponding to the outer wall of the limiting ball 8. The diameter of the inner side of the rectangular groove is smaller than the diameter of the limiting ball 8.

[0027] Specifically, the limiting ball 8 moves within the rectangular groove opened on the upper side of the pile end 1. Since the diameter of the inner side of the rectangular groove is smaller than the diameter of the limiting ball 8, the limiting ball 8 will not fall into the pile end 1. When the sliding shell 5 remains in its original position, the sliding ring 7 can prevent the limiting ball 8 from falling outward. When the sliding shell 5 moves downward, the inner wall of the top of the sliding ring 7 can prevent the limiting ball 8 from falling outward.

[0028] Reference Figure 1 and Figure 6 Both the inner walls of the pile end 1 and the pile top 2 are provided with an outer layer 11, a protective layer 12 is provided on the inner side of the outer layer 11, and an inner layer 13 is provided on the inner side of the protective layer 12. Both the inner walls of the pile end 1 and the pile top 2 are fixedly connected with a support frame 14, which is made of 304 stainless steel. The outer layer 11, the protective layer 12 and the inner layer 13 are all made of Q345 steel. The outermost layer 11 is coated with paint, the protective layer 12 is filled with epoxy resin, and the inner layer 13 is filled with iron-nickel fiber.

[0029] Specifically, the outer layer 11, protective layer 12, and inner layer 13 are all made of Q345 stainless steel. This steel has high strength and can withstand various external forces such as hammering force and lateral pressure during pile driving. It can also provide effective lateral restraint for the internal concrete. The main function of the outer layer 11 is to provide lateral restraint, withstand a certain amount of horizontal force and part of the vertical force, and prevent the internal concrete from expanding outward under pressure. Paint is applied to the outside of the outer layer 11. The paint can form a continuous protective film on the surface of the pipe pile, preventing oxygen and moisture from contacting the outer wall of the pipe pile, thereby delaying corrosion. The protective layer 12 is located within the inner layer. Between the outer layer 11 and the inner layer 12, epoxy resin is added inside the protective layer 12. This resin can not only resist corrosion, but also prevent water from entering the pipe pile to a certain extent, thereby protecting the internal structure of the pipe pile and extending its service life. The inner layer 13 is in direct contact with the concrete and is the core of the pipe pile. Iron-nickel fibers are added inside the inner layer 13, which can prevent water from corroding the pipe pile in the concrete and increase the viscosity of the concrete in contact with the inner layer 13. The support frame 14 is made of Q304 stainless steel, which can prevent water in the concrete from corroding it and has a certain strength, which can provide further support for the pipe pile.

[0030] Working principle: Place the pile end 1 on the foundation, then move the sliding shell 5 downwards. The sliding shell 5 drives the sliding ring 7 downwards, compressing the spring 10. Then, insert the pile top 2 along with the insertion post 4 into the top of the pile end 1. When the insertion post 4 touches the limiting ball 8, it moves the limiting ball 8 outwards. When the insertion post 4 is fully inserted into the top of the pile end 1, release the sliding shell 5. The spring 10 returns to its original position and drives the sliding ring 7 upwards. The sliding ring 7 moves the limiting ball 8 inwards again, inserting the limiting ball 8 into the limiting groove 9 to limit the insertion post 4. In this way, the pile top 2 and the pile end 1 can be connected and installed. Open the top cover 3 and inject concrete into the pile end 1 and the pile top 2. After the concrete dries, cover the top cover 3 again. The pipe pile is further protected by the support frame 14. By setting the outer layer 11, the protective layer 12 and the inner layer 13, the strength and corrosion resistance of the pipe pile are improved.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of plug-in installed steel-concrete composite pipe pile, characterized in that, include: The pile end (1) is spliced ​​with a pile top (2) at the top of the pile end (1). The bottom end of the pile top (2) is fixedly connected with a plug-in column (4). The outer wall of the plug-in column (4) is inserted into the upper inner wall of the pile end (1). The middle outer wall of the pile end (1) is fixedly connected with a support ring (6). The upper side of the pile end (1) is connected to a sliding shell (5) through a connecting component. The upper inner wall of the pile end (1) is fitted with limit balls (8) on all four sides. The middle inner wall of the plug-in column (4) is opened with limit grooves (9) on all four sides. Both the inner walls of the pile end (1) and the pile top (2) are provided with an outer layer (11), a protective layer (12) is provided on the inner side of the outer layer (11), and an inner layer (13) is provided on the inner side of the protective layer (12).

2. The steel-concrete composite pipe pile with plug-in installation according to claim 1, characterized in that: The connecting assembly includes a sliding ring (7) that is slidably connected to the upper outer wall of the pile end (1), and the upper inner wall of the sliding shell (5) is fixedly connected to the outer wall of the sliding ring (7).

3. A steel-concrete composite pipe pile with plug-in installation according to claim 2, characterized in that: A spring (10) is fixedly connected to the top of the support ring (6), and the top of the spring (10) is fixedly connected to the bottom of the sliding ring (7). The inner wall of the sliding shell (5) can slide on the outer wall of the support ring (6).

4. A steel-concrete composite pipe pile with plug-in installation according to claim 1, characterized in that: The top of the pile (2) is threadedly connected to a top cover (3) for opening the top cover (3) to add concrete into the pile end (1) and the pile top (2).

5. A steel-concrete composite pipe pile with plug-in installation according to claim 1, characterized in that: A rectangular groove is provided on the inner wall of the upper side of the pile end (1) corresponding to the outer wall of the limiting ball (8), and the diameter of the inner side of the rectangular groove is smaller than the diameter of the limiting ball (8).

6. A steel-concrete composite pipe pile with plug-in installation according to claim 1, characterized in that: The inner walls of the pile end (1) and the pile top (2) are both fixedly connected to a support frame (14), which is made of 304 stainless steel.

7. A steel-concrete composite pipe pile with plug-in installation according to claim 1, characterized in that: The outer layer (11), the protective layer (12) and the inner layer (13) are all made of Q345 steel. The outermost layer (11) is coated with paint, the protective layer (12) contains epoxy resin, and the inner layer (13) contains iron-nickel fiber.

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