Hollow prestressed pipe pile

Abstract

The utility model relates to the technical field of pile foundation engineering, and discloses a hollow prestressed pipe pile which comprises a column body, a supporting frame is wrapped in the column body, a connecting mechanism is installed on the outer side of the top of the column body, annular grooves are formed in the two ends of the column body, one sides of the annular grooves are communicated with the outside, and the connecting mechanism is connected with the inner walls of the annular grooves in an attached mode. The connecting pieces capable of bearing loads transmitted by the pile bodies are additionally arranged in the stress concentration areas between the hollow prestressed pipe piles which are in butt joint up and down, so that a tight connecting system is formed between the pipe piles, and the overall stability of the whole pile foundation is effectively improved; the whole pile foundation can better bear the weight and various loads from an upper structure, and the risks of safety accidents such as breakage and falling of the pipe pile in the construction process are reduced. A more reliable connecting mode is provided, it is ensured that the pipe pile can be kept stable in the inserting and follow-up construction process, and a safer working environment is provided for constructors.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation engineering, in particular to a hollow prestressed pipe pile. Background Art

[0002] Hollow prestressed pipe piles are a special foundation engineering technology. They use steel pipes as guide pipes. Prestressed steel bars are applied inside the pipes and then concrete is injected to form the pile foundation. The hollow prestressed pipe piles are hollow. This design can effectively reduce the deadweight of the piles and improve their bearing capacity. The main function of hollow prestressed pipe piles is to withstand geomechanical effects, including earthquakes, storms, tides and other geological disasters while maintaining their stability. They can be used in multi-story buildings. In addition, prestressed pipe piles are also suitable for geological conditions with large fluctuations in the bearing layer at the pile end, showing their strong engineering adaptability.

[0003] When multiple hollow prestressed pipe piles need to be inserted, the weak connection does need special attention and treatment. The connection is a key link in the entire pipe pile structure. Its strength and stability are directly related to the safety and bearing capacity of the entire pile foundation. Two hollow prestressed pipe piles may be relatively weak at the connection. This is mainly because the connection point between the pipe piles is a potential stress concentration area, which is easily affected by external forces. In order to ensure the stability and safety of the entire pile foundation structure, special connectors are usually required to reinforce the connection.

[0004] The patent with publication number CN205501999U currently discloses a hollow prestressed pipe pile, including a pile head, a pile body and a pile tip; the pile head is a circular iron plate at the top of the pipe pile; the pile body is composed of a concrete pile body and prestressed spiral steel strands; the pile tip is a plurality of reinforcement plates; although the above device solves the problem of pile sinking speed.

[0005] However, the above technical solution still has the following problems:

[0006] When multiple hollow prestressed pipe piles need to be inserted into the prefabricated tunnel, the connection positions between the multiple hollow prestressed pipe piles are missing connectors. The lack of connectors will result in a lack of firm connection between the pipe piles, thereby reducing the overall stability of the entire pile foundation. When subjected to external forces, the pipe piles are prone to relative displacement or tilt, affecting the stability of the entire structure; the pipe pile connections without connectors are prone to become stress concentration areas, resulting in the connection being easily damaged when bearing loads, which will directly affect the bearing capacity of the entire pile foundation and make it unable to effectively support the superstructure. Utility Model Content

[0007] In view of the deficiencies of the prior art, the utility model provides a hollow prestressed pipe pile to at least solve one of the problems raised by the background technology, such as: improving the stability of the connection of the hollow prestressed pipe pile.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hollow prestressed pipe pile, including a column, a support frame coated inside the column, a connecting mechanism installed on the outside of the top of the column, the connecting mechanism and the column are detachable, annular grooves are provided at both ends of the column, one side of the annular groove is connected to the outside, and the connecting mechanism is fitted and connected to the inner wall of the annular groove.

[0009] Furthermore, the connecting mechanism includes a first arc-shaped connecting plate and a second arc-shaped connecting plate, which are spliced ​​together to form a circular ring sleeve mounted on the inner wall of the annular groove, and the inner side of the circular ring is fitted and connected to the inner wall of the annular groove.

[0010] Furthermore, outer diameters of the first arc-shaped connecting plate and the second arc-shaped connecting plate are larger than outer diameters of the column.

[0011] Furthermore, connecting columns are fixedly connected to both ends of the first arc-shaped connecting plate, and circular holes for inserting and connecting with the connecting columns are formed at both ends of the second arc-shaped connecting plate.

[0012] Furthermore, a plug-in column is fixedly connected to the top of the column, the plug-in column covers the bracket at the top of the support frame, and a socket matching the plug-in column is opened at the bottom of the column.

[0013] Furthermore, the plug-in column and the column body are arranged vertically.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model forms a tight connection system between the pipe piles by adding a connector that can bear the load transmitted by the pile body to the stress concentration area between the upper and lower butted hollow prestressed pipe piles, effectively improving the overall stability of the entire pile foundation; enabling the entire pile foundation to better bear the weight and various loads from the upper structure, reducing the risk of safety accidents such as pipe pile breakage and falling off during construction. It provides a more reliable connection method, ensuring that the pipe piles can remain stable during insertion and subsequent construction, and providing a safer working environment for construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a side cross-sectional schematic diagram of the utility model;

[0018] Figure 3This is a schematic diagram of the three-dimensional structure of the column of the utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the connection mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the bottom structure of the three-dimensional column of the utility model.

[0021] In the figure: 1, column; 101, annular groove; 102, socket; 2, support frame; 3, connecting mechanism; 4, first arc-shaped connecting plate; 5, second arc-shaped connecting plate; 501, circular hole; 6, connecting column; 7, plug-in column. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] like Figures 1 to 5 As shown, a hollow prestressed pipe pile includes a column 1, the interior of the column 1 is covered with a support frame 2, a connecting mechanism 3 is installed on the outer side of the top of the column 1, the connecting mechanism 3 and the column 1 are detachably arranged, annular grooves 101 are opened at both ends of the column 1, one side of the annular groove 101 is connected to the outside, and the connecting mechanism 3 is fitted and connected to the inner wall of the annular groove 101.

[0024] like Figure 1 As shown, a hollow prestressed pipe pile in the utility model is similar to the existing hollow prestressed pipe pile structure, such as the hollow prestressed pipe pile disclosed in the patent publication number CN205501999U. The main improvement of the utility model is to improve the load capacity of the hollow prestressed pipe pile, such as Figures 1 to 5 As shown, during the production of a hollow prestressed pipe pile in the utility model, cement and other materials are used to pour the support frame 2 so that the cement forms the column 1 of the hollow prestressed pipe pile. When the hollow prestressed pipe pile is in use, the column 1 is inserted into the prefabricated tunnel on the construction site and fixed, and the connecting mechanism 3 is installed on the top of the column 1, and then the column 1 of another hollow prestressed pipe pile is inserted into the connecting mechanism 3, so that the connecting mechanism 3 and the outer sides of the columns 1 of the two hollow prestressed pipe piles are fitted and connected, and the connecting mechanism 3 is stuck in the annular grooves 101 at both ends of the column 1, so that the two ends of the contact surface of the connecting mechanism 3 and the column 1 can withstand the stress from the column 1, and the connecting mechanism 3 and the column 1 are detachable. After the bottom column 1 is fixed, the connecting mechanism 3 can be installed, and then the bottom of the other column 1 and the connecting mechanism 3 are aligned and inserted, which is convenient for construction personnel to use, and can also align each column 1 more accurately to ensure that the pipe pile can remain stable during insertion and subsequent construction.

[0025] like Figures 1 to 4 As shown, the connecting mechanism 3 includes a first arc-shaped connecting plate 4 and a second arc-shaped connecting plate 5. The first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5 are spliced ​​together to form a circular ring sleeve arranged on the inner wall of the annular groove 101, and the inner side of the circular ring is fitted and connected to the inner wall of the annular groove 101.

[0026] Specifically, through this arrangement, construction workers can more conveniently install the connecting mechanism 3 on one end of the column 1, and the circular ring composed of the first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5 can be fastened to the column 1, which can facilitate installation and maintain the stability of the connecting mechanism 3.

[0027] like Figures 1 to 4 As shown, the outer diameters of the first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5 are larger than the outer diameter of the column 1 .

[0028] Specifically, by setting up a circular ring composed of the first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5, the diameter of which is greater than the diameter of the column 1, when the gravity and load from above the column 1 are applied to the connecting mechanism 3, a stable structure can be maintained between the connecting mechanism 3 and the column 1, thereby avoiding the misalignment and separation between the connecting mechanism 3 and the column 1 and ensuring a stable connection of the column 1.

[0029] like Figure 4 As shown, the first arc-shaped connecting plate 4 has connecting posts 6 fixedly connected at both ends, and the second arc-shaped connecting plate 5 has circular holes 501 at both ends for inserting and connecting the connecting posts 6 .

[0030] Specifically, by setting the circular hole 501 and the connecting column 6, the circular ring composed of the first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5 can be kept fixed laterally. Before being subjected to pressure from the upper column 1, the first arc-shaped connecting plate 4 and the second arc-shaped connecting plate 5 maintain a circular ring shape, helping the upper column 1 to provide alignment installation.

[0031] like Figure 5 As shown, a plug-in column 7 is fixedly connected to the top of the column 1, and the plug-in column 7 covers the bracket at the top of the support frame 2. A socket 102 matching the plug-in column 7 is opened at the bottom of the column 1.

[0032] Specifically, by setting the plug-in effect of the plug-in column 7 and the socket 102, the stability of the connection between the columns 1 is further improved, so that the columns 1 can be kept in a fixed position in the tunnel after docking, and cooperate with the connecting mechanism 3 to form a stable whole with multiple columns 1, and the plug-in column 7 is covered with a bracket at the top of the support frame 2 to improve the firmness of the plug-in column 7.

[0033] like Figure 5 As shown, the plug-in column 7 and the column body 1 are arranged vertically.

[0034] Specifically, after the plug-in column 7 is plugged into the socket 102 of another column 1, the vertical effect can ensure that the plug-in column 7 in the column 1 will not be broken due to angle deviation when subjected to load from above, thereby protecting the overall stability of the column 1.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow prestressed pipe pile, comprising a column (1), characterized in that: The column (1) is internally coated with a support frame (2), a connecting mechanism (3) is installed on the outer side of the top of the column (1), the connecting mechanism (3) and the column (1) are detachably arranged, an annular groove (101) is provided at both ends of the column (1), one side of the annular groove (101) is communicated with the outside, and the connecting mechanism (3) and the inner wall of the annular groove (101) are closely connected.

2. A hollow prestressed pipe pile according to claim 1, characterized in that: The connecting mechanism (3) comprises a first arc-shaped connecting plate (4) and a second arc-shaped connecting plate (5); the first arc-shaped connecting plate (4) and the second arc-shaped connecting plate (5) are spliced ​​together to form a circular ring sleeve mounted on the inner wall of the annular groove (101); the inner side of the circular ring is fitted and connected to the inner wall of the annular groove (101).

3. A hollow prestressed pipe pile according to claim 2, characterized in that: The outer diameters of the first arc-shaped connecting plate (4) and the second arc-shaped connecting plate (5) are greater than the outer diameter of the column (1).

4. A hollow prestressed pipe pile according to claim 2 or 3, characterized in that: The first arc-shaped connecting plate (4) has connecting posts (6) fixedly connected at both ends, and the second arc-shaped connecting plate (5) has circular holes (501) inserted and connected to the connecting posts (6) at both ends.

5. A hollow prestressed pipe pile according to claim 1, 2 or 3, characterized in that: The top of the column (1) is fixedly connected with a plug-in column (7), the plug-in column (7) covers the bracket at the top of the support frame (2), and the bottom of the column (1) is provided with a plug-in hole (102) matching the plug-in column (7).

6. The hollow prestressed pipe pile according to claim 4, characterized in that: The top of the column (1) is fixedly connected with a plug-in column (7), the plug-in column (7) covers the bracket at the top of the support frame (2), and the bottom of the column (1) is provided with a plug-in hole (102) matching the plug-in column (7).

7. The hollow prestressed pipe pile according to claim 5, characterized in that: The plug-in column (7) and the column body (1) are arranged vertically.

8. The hollow prestressed pipe pile according to claim 6, characterized in that: The plug-in column (7) and the column body (1) are arranged vertically.

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