Prestressed concrete uplift pipe pile

Abstract

A prestressed concrete uplift tubular pile comprises a lower-section tubular pile, a piling drill bit and an upper-section tubular pile, double-end threaded steel plates are fixedly mounted in the lower-section tubular pile and the upper-section tubular pile, threaded columns are in threaded connection with threads at one ends of the double-end threaded steel plates, and the piling drill bit is in threaded connection with the threaded columns connected with the lower-section tubular pile. The double-end threaded steel plates are arranged in the lower-section pipe pile and the upper-section pipe pile, permeation of substances such as water and soil can be effectively reduced or prevented, the interior of the pipe pile is kept dry and clean, the pile driving drill bit is connected with the lower-section pipe pile through the threaded column, the pile driving drill bit is connected with the upper-section pipe pile through the threaded column, and the pile driving drill bit and the lower-section pipe pile are connected through the threaded column. According to the pipe pile connecting structure, stable connection between pipe piles can be achieved, connection is tighter and not prone to loosening, accurate positioning can be achieved in the pipe connecting process through matching of the limiting rings and the limiting grooves, the installation problem caused by position deviation is avoided, and the overall stability and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-pulling pipe piles, in particular to a prestressed concrete anti-pulling pipe pile. Background Art

[0002] Anti-pullout pipe piles refer to piles that are driven to offset the buoyancy of the structure caused by water in the soil when the underground structure of a construction project is lower than the surrounding soil water level. This type of pipe pile uses high-strength steel bars or steel strands as a prestressing force source and sets prestressed tendons in the pile body to optimize the pile's bearing capacity and seismic resistance, and increase its service life.

[0003] At present, the existing pipe piles are all installed underground, and the soil with moisture and other substances can easily penetrate into the interior of the pipe piles, causing rust and corrosion inside the pipe piles, which can easily lead to a decrease in the structural strength and durability of the pipe piles. At present, most of the existing pipe pile connections are welded to connect the ends of the two piles together, and in the process of connecting the pipes, due to the use of machine splicing, it is easy to cause misalignment at the connection, resulting in the lower section of the pipe pile losing its pull-out resistance and the upper section of the pipe pile being pulled out, which directly affects the overall stability and safety of the pull-out piles. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a prestressed concrete anti-pulling pipe pile, which makes the pipe pile easy to splice and improves the overall stability and safety.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed concrete pull-out resistant pipe pile, comprising a lower pipe pile, a pile driving drill bit and an upper pipe pile, wherein the lower pipe pile and the upper pipe pile are both fixedly installed with double-headed threaded steel plates inside, a threaded column is threadedly connected to a threaded part at one end of the double-headed threaded steel plate, the pile driving drill bit is threadedly connected to the threaded column connected to the lower pipe pile, a limiting ring is provided at one end of the lower pipe pile and the upper pipe pile, and a limiting groove with the same position and size as the limiting ring is provided at the other end, and a fixing piece is fixedly installed at the connection between the pile driving drill bit and the lower pipe pile.

[0006] Preferably, the fixing member comprises a collar fixedly mounted on the outer ring of the lower pipe pile, a high-strength bolt and a grouting groove, the high-strength bolt passes through the collar and the lower pipe pile and is connected to the pile driving drill bit, and the grouting groove is connected to the limit groove.

[0007] Preferably, a limiting ring is fixedly installed inside the double-threaded steel plate and abuts against the threaded column.

[0008] Preferably, a supporting steel plate is inlaid and installed on the inner wall of the limiting groove.

[0009] Preferably, both ends of the lower section pipe pile and the upper section pipe pile are installed with welded reserved hoops.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] This type of prestressed concrete pull-out resistant pipe pile can effectively reduce or prevent the penetration of water, soil and other substances by means of double-headed threaded steel plates arranged inside the lower pipe pile and the upper pipe pile, thereby keeping the inside of the pipe pile dry and clean. The pile driving drill bit is connected to the lower pipe pile by means of a threaded column, so that a stable connection between the pipe piles can be achieved, making the connection tighter and less likely to loosen. Through the cooperation of the limiting ring and the limiting groove, precise positioning can be achieved during the pipe connection process, thus avoiding installation problems caused by position deviation and improving overall stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the overall separation structure of the utility model;

[0015] Figure 4 It is a cross-sectional schematic diagram of the overall separation structure of the utility model;

[0016] Figure 5 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0017] In the figure: 1. lower section of pipe pile; 2. pile driving drill bit; 3. upper section of pipe pile; 4. fixing parts; 401. high-strength bolt; 402. collar; 403. grouting groove; 5. limiting groove; 6. threaded column; 7. double-headed threaded steel plate; 8. limiting ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 5A prestressed concrete pull-out resistant pipe pile comprises a lower pipe pile 1, a pile driving drill bit 2 and an upper pipe pile 3. Double-headed threaded steel plates 7 are fixedly installed inside the lower pipe pile 1 and the upper pipe pile 3. The existence of the double-headed threaded steel plates 7 greatly enhances the connection stability between the pipe piles. When the upper pipe pile 3 is connected to the lower pipe pile 1, the thread design of the double-headed threaded steel plate 7 can be tightly combined with the corresponding part of the other pipe pile to form a firm threaded connection. A threaded column 6 is threadedly connected at one end of the double-headed threaded steel plate 7. The pile driving drill bit 2 is threadedly connected to the threaded column 6 connected to the lower pipe pile 1. Through the threaded connection, the double-headed threaded steel plate 7 and the threaded column 6 are connected to each other. A tight and stable connection can be achieved between the pile driving drill bit 2 and the threaded column 6, reducing construction problems caused by looseness or misalignment, thereby improving the stability of the entire structure. A limiting ring is set at one end of the lower section pipe pile 1 and the upper section pipe pile 3, and a limiting groove 5 with the same position size as the limiting ring is opened at the other end. The limiting ring and the limiting groove 5 are used in coordination, so that the lower section pipe pile 1 and the upper section pipe pile 3 can be accurately docked and positioned when connected. The limiting ring can be accurately embedded in the limiting groove 5 to ensure that the connection position between the pipe piles is accurate and avoid installation problems caused by position deviation. A fixing part 4 is fixedly installed at the connection between the pile driving drill bit 2 and the lower section pipe pile 1.

[0020] When in use, during production, the double-headed threaded steel plate 7 is welded to the steel bars in the pipe pile. The existence of the double-headed threaded steel plate 7 greatly enhances the connection stability between the pipe piles. The threaded column 6 is threadedly connected to one end of the lower pipe pile 1. A tight and stable connection can be achieved between the double-headed threaded steel plate 7 and the threaded column 6 as well as between the pile driving drill bit 2 and the threaded column 6, reducing construction problems caused by looseness or dislocation, thereby improving the stability of the entire structure. The lower pipe pile 1 is hoisted onto the pile driver by a lifting device, and the connection of the pile driver is threadedly connected to the other end of the lower pipe pile 1. The staff screws the pile driving drill bit 2 and the threaded column 6 The thread connection is achieved through the use of a limiting ring and a limiting groove 5, so that the lower section pipe pile 1 and the pile driving drill bit 2 can be accurately docked and positioned when connected, and the limiting ring can be accurately embedded in the limiting groove 5 to ensure that the connection position between the pipe piles is accurate and avoid installation problems caused by position deviation. It is firmly fixed by the fixing part 4 to prevent the pile driving drill bit 2 from falling off when the equipment is running. Similarly, the upper section pipe pile 3 is fixedly connected with the lower section pipe pile 1, which can significantly enhance the stability and integrity of the entire pipe pile structure, avoid installation problems caused by position deviation, and improve overall stability and safety.

[0021] like Figure 1-Figure 4As shown, further, the fixing member 4 includes a collar 402 fixedly installed on the outer ring of the lower section pipe pile 1, a high-strength bolt 401 and a grouting groove 403. The high-strength bolt 401 penetrates the collar 402 and the lower section pipe pile 1 and is connected with the pile driving drill bit 2. The grouting groove 403 is connected with the limit groove 5. In the above-mentioned use process, the collar 402 is first tightly fixed to the lower section pipe pile 1 by the high-strength bolt 401, and then the collar 402 and the pile driving drill bit 2 are firmly connected together by the high-strength bolt 401, so as to achieve high-strength fixation. The operator only needs to rotate the high-strength bolt 401 to achieve quick connection or separation, thereby improving the construction efficiency. The slurry is injected into the limit groove 5 through the grouting groove 403 to improve the stability of the pipe pile.

[0022] like Figure 2 or Figure 4 As shown, further, a limiting ring 8 is fixedly installed inside the double-headed threaded steel plate 7 and is against the threaded column 6. During the above-mentioned use, when the threaded column 6 and the double-headed threaded steel plate 7 are threadedly connected, the limiting ring 8 can provide an additional support and fixing point to ensure that the connection between the two is more secure and not easy to loosen. The limiting ring 8 serves as a positioning point to ensure that the threaded column 6 is accurately aligned with the threaded hole of the double-headed threaded steel plate 7 during the connection process, avoiding connection problems caused by position deviation and improving the accuracy and reliability of the connection.

[0023] like Figure 2 or Figure 4 As shown, further, a supporting steel plate is embedded in the inner wall of the limit groove 5. The existence of the supporting steel plate enhances the structural strength of the limit groove 5. During the connection and use of the pipe piles, the limit groove 5 and the surrounding area may be subjected to greater pressure and tension. The addition of the supporting steel plate can effectively disperse and withstand these forces, preventing the limit groove 5 from being deformed or damaged due to excessive force.

[0024] like Figure 2 or Figure 4 As shown, further, welding reserved hoops are installed at both ends of the lower section pipe pile 1 and the upper section pipe pile 3. During the above-mentioned use, the setting of the welding reserved hoops enables the lower section pipe pile 1 and the upper section pipe pile 3 to be more firmly connected by welding when connected. Welding, as a high-strength connection method, can tightly combine the ends of the lower section pipe pile 1 and the upper section pipe pile 3 together, thereby improving the connection strength of the entire pipe pile structure.

[0025] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] 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 prestressed concrete anti-pulling pipe pile, comprising a lower pipe pile (1), a pile driving drill (2) and an upper pipe pile (3), characterized in that: The lower section pipe pile (1) and the upper section pipe pile (3) are both fixedly installed with double-headed threaded steel plates (7), one end of the double-headed threaded steel plates (7) is threadedly connected with a threaded column (6), the pile driving drill bit (2) is threadedly connected with the threaded column (6) connected to the lower section pipe pile (1), one end of the lower section pipe pile (1) and the upper section pipe pile (3) are both provided with a limiting ring, and the other end is provided with a limiting groove (5) with the same position and size as the limiting ring, and a fixing piece (4) is fixedly installed at the connection between the pile driving drill bit (2) and the lower section pipe pile (1).

2. A prestressed concrete anti-extraction pipe pile according to claim 1, characterized in that: The fixing member (4) comprises a collar (402) fixedly mounted on the outer ring of the lower pipe pile (1), a high-strength bolt (401) and a grouting groove (403); the high-strength bolt (401) penetrates the collar (402) and the lower pipe pile (1) to be connected to the pile driving drill bit (2); and the grouting groove (403) is communicated with the limiting groove (5).

3. A prestressed concrete anti-extraction pipe pile according to claim 1 or 2, characterized in that: A limiting circular ring (8) is fixedly installed inside the double-threaded steel plate (7) and abuts against the threaded column (6).

4. A prestressed concrete anti-extraction pipe pile according to claim 1 or 2, characterized in that: A supporting steel plate is inlaid and installed on the inner wall of the limiting groove (5).

5. The prestressed concrete anti-pulling pipe pile according to claim 3, characterized in that: A supporting steel plate is inlaid and installed on the inner wall of the limiting groove (5).

6. A prestressed concrete anti-extraction pipe pile according to claim 1, 2 or 5, characterized in that: Both ends of the lower section pipe pile (1) and the upper section pipe pile (3) are installed with welded reserved hoops.

7. The prestressed concrete anti-pulling pipe pile according to claim 3, characterized in that: Both ends of the lower section pipe pile (1) and the upper section pipe pile (3) are installed with welded reserved hoops.

8. The prestressed concrete anti-pulling pipe pile according to claim 4, characterized in that: Both ends of the lower section pipe pile (1) and the upper section pipe pile (3) are installed with welded reserved hoops.

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