PHC pipe pile non-welding quick-connection structure with anti-pulling function and construction method of PHC pipe pile non-welding quick-connection structure

Abstract

The embodiment of the invention discloses a PHC tubular pile welding-free quick connection structure with an anti-pulling function and a construction method, the PHC tubular pile welding-free quick connection structure comprises an upper tubular pile, a lower tubular pile, an upper pile head and a lower pile head, the upper tubular pile, the lower tubular pile, the upper pile head and the lower pile head are all of cylindrical structures, the lower pile head is installed at the top of the lower tubular pile, the upper pile head is installed at the bottom of the upper tubular pile, and the lower pile head is installed at the bottom of the lower tubular pile. By means of the connecting device, workers can conveniently adjust the butt joint condition of the upper pipe pile and the lower pipe pile again, and rapid construction is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a PHC pipe pile non-welding quick-connect structure with an anti-pullout function and a construction method. Background Art

[0002] PHC prefabricated pipe piles, namely prestressed high-strength concrete pipe piles, are hollow cylindrical concrete prefabricated components made by pre-tensioned prestressed centrifugal forming process and high-pressure steam curing. PHC pipe piles are suitable for a variety of geological conditions, including strongly weathered rock formations, fully weathered rock formations, hard clay layers or dense sand layers, etc. They are widely used in high-rise buildings, industrial and civil buildings, railways, highways, bridges, ports, docks and other engineering foundations. PHC pipe piles are factory-based, professional and standardized production, with reliable pile body quality, convenient transportation and hoisting, fast pile connection, high degree of mechanized construction, simple operation and easy control. The pile connection structure is an important component in pipe pile construction, especially when it is necessary to extend the pile length or process the pile top mark. When the height does not meet the design requirements, the connection structure of the PHC prefabricated pipe pile is mainly composed of the upper section pile, the lower section pile, connectors such as end plates, welding materials, etc., and necessary filling materials such as micro-expansion concrete. When connecting the piles, it is necessary to ensure that the upper and lower sections of the piles are on the same axis and the connection is firm to meet the bearing capacity and durability requirements. The existing pipe pile connection generally adopts on-site welding, but on-site welding is usually carried out outdoors and is easily affected by environmental factors such as weather, temperature, and humidity, resulting in unstable welding quality. In engineering, PHC pipe piles are also widely used in high groundwater levels or other conditions that may cause soil uplift. In these cases, buildings or structures will be subject to upward buoyancy, and the piles need to have pull-out resistance. In engineering practice, the quality of pipe pile welding joints is difficult to guarantee, and quality defects such as desoldering and cracking often occur. These defects directly affect the integrity and stability of the pile connection, thereby reducing its pull-out resistance.

[0003] The welding process of PHC pipe piles requires precise operation and appropriate time to ensure welding quality, which directly affects the overall speed of construction. Especially when welding piles on site, due to environmental conditions and equipment limitations, multiple adjustments and inspections may be required to ensure that the welding quality meets the standards. This process is relatively cumbersome and time-consuming. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above-mentioned background technology. The present invention provides a PHC pipe pile weldless quick-connect structure with anti-pullout function and a construction method, which improves the anti-pullout performance of the PHC pipe pile joint, facilitates the staff to readjust the docking conditions of the upper and lower pipe piles, and realizes rapid construction.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A PHC pipe pile weldless quick-connect structure with anti-pullout function comprises an upper pipe pile, a lower pipe pile, an upper pile head and a lower pile head. The upper pipe pile, the lower pipe pile, the upper pile head and the lower pile head are all cylindrical structures. The lower pile head is installed on the top of the lower pipe pile, and the upper pile head is installed on the bottom of the upper pipe pile. A connecting device connects the upper pile head and the lower pile head.

[0007] Furthermore, a first installation circular groove is provided at the upper end of the upper pile head, and a second installation circular groove is provided at the lower end of the upper pile head. The first installation circular groove is connected to the second installation circular groove, and the diameter of the second installation circular groove is smaller than the diameter of the first installation circular groove.

[0008] Furthermore, the lower pile head is provided with a circular slot one, a slot two and a rotation avoidance groove. The circular slot one is located in the middle of the lower pile head. Four circumferentially distributed slots two are provided on the outside of the circular slot one. The circular slot one is connected with the slot two. The rotation avoidance groove is located at the lower end of the slot two. A fixing plate is provided at the front end of the slot two. A fixing groove is provided at the front end of the fixing plate. The bottom of the fixing groove is connected with the slot two. A threaded hole is provided in the middle of the fixing plate.

[0009] Furthermore, the connecting device includes a cylinder, a protrusion, a disc, an annular disc and an insert, the disc is fixed on the top of the cylinder, the annular disc is sleeved on the cylinder, the protrusion is circumferentially installed on the bottom of the cylinder, and the insert is circumferentially installed on the outside of the annular disc.

[0010] Furthermore, the protrusion corresponds to slot two, the outer diameter of the disk of the connecting device is equal to the mounting circular groove one of the upper pile head, the column passes through the mounting circular groove two, the outer diameter of the column is less than or equal to the circular slot one, the height of the protrusion is less than or equal to the height of the rotation avoidance groove, and when the connecting device is connected to the lower pile head, the plug block is connected to the fixing plate by bolts.

[0011] Furthermore, the plug block includes a connecting cylinder, an insert plate and a clamping plate. One end of the insert plate is connected to the connecting cylinder, and the other end of the insert plate is connected to the clamping plate. The insert plate is perpendicular to the clamping plate. The edge of the annular disk is provided with four circumferentially distributed connecting cylinder mounting grooves. One end of the connecting cylinder is installed in the connecting cylinder mounting groove through a connecting pin. The insert plate is provided with a threaded hole corresponding to the threaded hole of the fixing plate. After the connecting device is connected to the lower pile head, the clamping plate is located at the lower end of the fixing plate.

[0012] Furthermore, the outer diameter of the column is equal to the diameter of the second mounting circular groove.

[0013] Furthermore, the outer diameter of the annular disk is equal to the outer diameter of the upper pile head.

[0014] Furthermore, a protrusion is provided at the end of the plug board, and the protrusion and the clamping plate are located at both ends of the plug board.

[0015] The present invention also discloses a PHC pipe pile construction method with anti-pullout function, which comprises the following steps: firstly placing a disc of a connecting device in a mounting circular groove of an upper pile head, then welding a column and a disc together, then welding the upper pile head to an upper pipe pile, then welding or anchoring the lower pile head to a lower pipe pile, then aligning a protrusion of the connecting device with slot two and pressing down, then rotating the connecting device, and moving the protrusion at a rotating avoidance groove so that the insert block is aligned with slot two, then rotating the insert block, and connecting the insert block to a fixing plate by bolts, thereby completing the assembly of a lower pipe pile and an upper pipe pile of the PHC prefabricated pipe.

[0016] Beneficial effects:

[0017] The present invention designs the structure of the upper pile head, the lower pile head and the connecting device. When connecting the upper pipe pile with the lower pipe pile, the upper pile head and the lower pile head are aligned, the protrusion of the connecting device is aligned with the second slot and pressed down, and then the connecting device is rotated, the protrusion moves in the rotation avoidance groove, so that the plug block is aligned with the second slot, and then the plug block is rotated to make the plug plate of the plug block rotate downward, the plug plate corresponds to the fixed plate, and the plug block is connected to the fixed plate by bolts to complete the assembly of the lower pipe pile and the upper pipe pile of the PHC prefabricated pipe. The quick-connect structure of the present invention improves the pull-out resistance of the PHC pipe pile joint, and the upper pipe pile and the lower pipe pile cannot be separated if they cannot be taken out under light shaking, or if the bolts are damaged.

[0018] When disassembly is required, just remove the bolts, flip the plug, and rotate the connecting device in the opposite direction to separate the upper and lower pipe piles, making it convenient for the staff to readjust the docking of the upper and lower pipe piles and achieve the purpose of rapid construction.

[0019] It avoids the potential safety hazards during the on-site welding and connection construction of PHC pipe piles, such as the difficulty in ensuring the quality of welding joints, and quality defects such as desoldering and cracking often occur, which poses a quality and safety hazard to the quality of the construction project. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the quick connection of the pipe pile of the present invention;

[0022] Figure 2 This is a schematic diagram of a pile head according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a pile head according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a connection device according to an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of a connecting device according to an embodiment of the present invention from another perspective;

[0026] Figure 6 It is a schematic diagram of an insert block according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] As shown in the figure, the embodiment of the present invention discloses a PHC pipe pile weldless quick-connect structure with anti-pullout function, including an upper pipe pile 3, a lower pipe pile 1, an upper pile head 4 and a lower pile head 2, wherein the upper pipe pile 3, the lower pipe pile 1, the upper pile head 4 and the lower pile head 2 are all cylindrical structures, the lower pile head 2 is installed on the top of the lower pipe pile 1, the upper pile head 4 is installed on the bottom of the upper pipe pile 3, and the connecting device 5 connects the upper pile head 4 and the lower pile head 2. The present invention changes the traditional structure of directly connecting the upper pipe pile 3 and the lower pipe pile 1, and instead adds the upper pile head 4 and the lower pile head 2, and improves the anti-pullout performance through the upper pile head 4 and the lower pile head 2.

[0029] In one embodiment of the present invention, the upper end of the upper pile head 4 is provided with a mounting circular groove 1 40, and the lower end of the upper pile head is provided with a mounting circular groove 2 41, the mounting circular groove 1 40 is connected to the mounting circular groove 2 41, and the diameter of the mounting circular groove 2 41 is smaller than the diameter of the mounting circular groove 1 40. The upper pile head 4 is used to install the upper end of the connecting device 5.

[0030] In one embodiment of the present invention, the lower pile head 2 is provided with a circular slot 1 20, a slot 21 and a rotation avoidance groove 22. The circular slot 1 20 is located in the middle of the lower pile head 2. Four circumferentially distributed slots 21 are provided on the outer side of the circular slot 1 20. The circular slot 1 20 is connected with the slot 2 21. The rotation avoidance groove 22 is located at the lower end of the slot 2 21. A fixing plate 23 is provided at the front end of the slot 21. A fixing groove 24 is provided at the front end of the fixing plate 23. The bottom of the fixing groove 24 is connected with the slot 2 21. A threaded hole 25 is provided in the middle of the fixing plate 23.

[0031] The rotation avoidance groove 22 is provided to clamp the protrusion 51 of the column connecting device 5 to prevent it from being pulled out, and thus has an anti-pullout function.

[0032] In one embodiment of the present invention, the connecting device 5 includes a column 50, a protrusion 51, a disc 52, an annular disc 53 and an insert 54. The disc 52 is fixed to the top of the column 50, the annular disc 53 is sleeved on the column 50, the protrusion 51 is circumferentially mounted on the bottom of the column 50, and the insert 54 is circumferentially mounted on the outside of the annular disc 53. The annular disc 53 here is used to install the insert 54, and the insert 54 is used to connect with the fixing plate 23 to complete the quick connection.

[0033] In one embodiment of the present invention, the protrusion 51 corresponds to the second slot 21, the outer diameter of the disc 52 of the connecting device 5 is equal to the mounting circular groove 40 of the upper pile head, the column 50 passes through the mounting circular groove 41, the outer diameter of the column 50 is less than or equal to the circular slot 20, the height of the protrusion 51 is less than or equal to the height of the rotation avoidance groove 22, and when the connecting device 5 is connected to the lower pile head 2, the plug 54 is connected to the fixing plate 23 by bolts 6 to prevent the connecting device 5 from rotating.

[0034] In one embodiment of the present invention, the plug block 54 includes a connecting cylinder 541, a plug plate 542 and a clamping plate 543. One end of the plug plate 542 is connected to the connecting cylinder 541, and the other end of the plug plate 542 is connected to the clamping plate 543. The plug plate 542 is perpendicular to the clamping plate 543. The edge of the annular disk 53 is provided with four circumferentially distributed connecting cylinder mounting grooves 531. One end of the connecting cylinder 541 is installed at the connecting cylinder mounting groove 531 through a connecting pin. The plug plate 542 is provided with a threaded hole corresponding to the threaded hole 25 of the fixing plate. After the connecting device 5 is connected to the lower pile head 2, the clamping plate 543 is located at the lower end of the fixing plate 23. When rotating, the clamping plate 543 of the plug block 54 is clamped at the lower end of the fixing plate to prevent it from being pulled out.

[0035] In one embodiment of the present invention, the outer diameter of the column 50 is equal to the diameter of the second mounting groove 41 .

[0036] In one embodiment of the present invention, the outer diameter of the annular disk 53 is equal to the outer diameter of the upper pile head 4 .

[0037] In one embodiment of the present invention, a protrusion 544 is provided at the end of the inserting plate 542 , and the protrusion 544 and the clamping plate 543 are located at two ends of the inserting plate 542 .

[0038] After the plug 54 is inserted into the fixing groove 24, the plug 54 and the outer surface of the lower pile head form a smooth surface as a whole. However, if a defect occurs at the connection and needs to be replaced, it is not easy to separate the plug 54 from the fixing groove 24. Therefore, after adding this protrusion 544, if it is necessary to separate the plug 54 from the fixing groove 24, there is a force point, which facilitates the separation of the plug 54 from the fixing groove 24.

[0039] The present invention also discloses a PHC pile construction method with anti-pulling function, firstly, the disc 52 of the connecting device is placed at the installation circular groove 40 of the upper pile head, because after the annular disc at the lower end is installed, if the disc 52 and the column 50 are installed first, the disc 52 cannot be placed in the installation circular groove 40, and then the column 50 and the disc 52 are welded together, at this time, it is only necessary to lift the column and the disc 52 upward, and put them down after the welding is completed, and at this time, the disc 52 is located at the installation circular groove 40. Then, the upper pile head 2 and the upper pipe pile 3 are welded, and the disc 52 is fixed at this time, and then the lower pile head 2 and the lower pipe pile 1 are welded or anchored together. Through the above steps, two components are currently formed, one component is the upper pile head, the upper pipe pile 3 and the connecting device 5 at the upper end, and the lower end components are the lower pile head 2 and the lower pipe pile 1. Later, it is only necessary to connect the connecting device and the lower pile head 2 together to complete the quick connection of the PHC pile.

[0040] Align the protrusion 51 of the connection device 5 with the second slot 21 and press down. At this time, the plug block and the fixing plate are not in the corresponding position and cannot be installed. Then rotate the connection device 5, and the protrusion 51 moves in the rotation avoidance groove 22, so that the plug block 54 is aligned with the second slot 21, and then rotate the plug block 54, so that the plug plate 542 of the plug block 54 rotates downward, and the plug plate 542 corresponds to the fixing plate 23, and the plug block 54 is connected with the fixing plate 23 by bolts 6, and the assembly of the lower pipe pile and the upper pipe pile of the PHC prefabricated pipe is completed.

[0041] The present invention avoids on-site welding during on-site construction and speeds up the construction progress.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PHC pipe pile weldless quick-connect structure with anti-pullout function, characterized in that: It includes an upper pipe pile, a lower pipe pile, an upper pile head and a lower pile head. The upper pipe pile, the lower pipe pile, the upper pile head and the lower pile head are all cylindrical structures. The lower pile head is installed on the top of the lower pipe pile, and the upper pile head is installed on the bottom of the upper pipe pile. A connecting device connects the upper pile head and the lower pile head.

2. The PHC pipe pile weldless quick-connect structure with anti-pulling function according to claim 1 is characterized in that: The upper end of the upper pile head is provided with a first installation circular groove, and the lower end of the upper pile head is provided with a second installation circular groove. The first installation circular groove is communicated with the second installation circular groove, and the diameter of the second installation circular groove is smaller than the diameter of the first installation circular groove.

3. The PHC pipe pile weldless quick-connect structure with anti-pulling function according to claim 2 is characterized in that: The lower pile head is provided with a circular slot one, a slot two and a rotation avoidance slot. The circular slot one is located in the middle of the lower pile head. Four circumferentially distributed slots two are provided on the outside of the circular slot one. The circular slot one is connected with the slot two. The rotation avoidance slot is located at the lower end of the slot two. A fixing plate is provided at the front end of the slot two. A fixing slot is provided at the front end of the fixing plate. The bottom of the fixing slot is connected with the slot two. A threaded hole is provided in the middle of the fixing plate.

4. The PHC pipe pile weldless quick-connect structure with anti-pulling function according to claim 3 is characterized in that: The connecting device comprises a cylinder, a convex block, a disc, an annular disc and an insert block. The disc is fixed on the top of the cylinder, the annular disc is sleeved on the cylinder, the convex block is circumferentially installed on the bottom of the cylinder, and the insert block is circumferentially installed on the outside of the annular disc.

5. The PHC pipe pile weldless quick-connect structure with anti-pulling function according to claim 4 is characterized in that: The protrusion corresponds to slot two, the outer diameter of the connecting device's disc is equal to the mounting circular groove one of the upper pile head, the column passes through the mounting circular groove two, the outer diameter of the column is less than or equal to the circular slot one, the height of the protrusion is less than or equal to the height of the rotation avoidance groove, and when the connecting device is connected to the lower pile head, the plug block is connected to the fixing plate by bolts.

6. The PHC pile weldless quick-connect structure with anti-pulling function according to claim 5, characterized in that: The plug block includes a connecting cylinder, a plug plate and a clamping plate. One end of the plug plate is connected to the connecting cylinder, and the other end of the plug plate is connected to the clamping plate. The plug plate is perpendicular to the clamping plate. The edge of the annular disk is provided with 4 circumferentially distributed connecting cylinder mounting grooves. One end of the connecting cylinder is installed at the connecting cylinder mounting groove through a connecting pin. The plug plate is provided with a threaded hole corresponding to the threaded hole of the fixing plate. After the connecting device is connected to the lower pile head, the clamping plate is located at the lower end of the fixing plate.

7. The PHC pile weldless quick-connect structure with anti-pulling function according to claim 6, characterized in that: The outer diameter of the column is equal to the diameter of the second mounting circular groove.

8. The PHC pile weldless quick-connect structure with anti-pulling function according to claim 7, characterized in that: The outer diameter of the annular disk is equal to the outer diameter of the upper pile head.

9. The PHC pipe pile weldless quick-connect structure with anti-pulling function according to claim 6, characterized in that: A protrusion is arranged at the end of the plug board, and the protrusion and the clamping plate are located at two ends of the plug board.

10. A method for constructing a PHC pile with anti-pulling function, characterized in that: First, place the disc of the connecting device in the installation circular groove of the upper pile head, then weld the column and the disc together, then weld the upper pile head to the upper pipe pile, and then weld or anchor the lower pile head to the lower pipe pile, then align the protrusion of the connecting device with the second slot and press it down, then rotate the connecting device, the protrusion moves in the rotation avoidance groove, so that the plug is aligned with the second slot, and then rotate the plug, connect the plug to the fixing plate with bolts, and complete the assembly of the lower pipe pile and the upper pipe pile of the PHC prefabricated pipe.

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