PHC pipe pile driving guide frame and PHC pipe pile driving method

Abstract

This invention relates to the field of PHC pipe pile driving technology and discloses a PHC pipe pile driving guide frame. It includes a guide frame body, which includes an installation mechanism. A positioning cylinder with one closed end is provided at the lower end of the installation mechanism, and an elastic mechanism is provided between the installation mechanism and the closed end of the positioning cylinder. The elastic mechanism of the PHC pipe pile driving guide frame of this application acts as a buffer during static pressure driving, reducing the impact force of the driving equipment on the pipe pile, effectively protecting the PHC pipe pile, and reducing driving costs. This invention also discloses a PHC pipe pile driving method. This PHC pipe pile driving method uses the aforementioned PHC pipe pile driving guide frame. Using this PHC pipe pile driving method will not damage the PHC pipe pile during static pressure driving, and can quickly, effectively, and safely complete the driving of PHC pipe piles.

Description

Technical Field

[0001] This invention relates to the field of PHC pipe pile driving technology, and in particular to a PHC pipe pile driving guide frame and a PHC pipe pile driving method. Background Technology

[0002] PHC pipe piles, or prestressed high-strength concrete pipe piles, are hollow cylindrical precast concrete components manufactured using a pre-tensioned prestressed centrifugal molding process and steam curing at approximately 10 atmospheres and 180 degrees Celsius. The main construction methods for PHC pipe piles are hammer driving and static pressure driving. The hammer driving method using diesel hammers and hydraulic hammers still dominates in my country, especially in Japan. However, in recent years, with the advent of large-tonnage pile drivers and the improvement of static pressure driving technology, the static pressure method has significant advantages over the hammer driving method and is therefore developing rapidly, showing a potential to replace the hammer driving method.

[0003] Static pressure piling is a pile driving process that uses the self-weight of the piling machine and the counterweight on the pile frame as reaction force to press PHC pipe piles into the soil. During the pile driving process, the piling force can be read directly, safely, accurately, and automatically recorded. Therefore, it has high precision in controlling and judging the pile bearing capacity. The pile quality and pile length can be monitored directly, with fewer human interference factors and difficulty in falsification. As a result, the single pile bearing capacity of static pressure piling is more reliable than that of hammer driving, the pile driving quality is highly trusted by the owner, and it greatly reduces the workload of the supervisor and eliminates the designer's concerns. During hammer driving, the impact and reflection of the hammer force cause the PHC pipe pile to be subjected to large compressive and tensile stress waves, which can easily cause cracks in weak points such as the pile head, pile body, and joints, seriously affecting the quality of the pile foundation. The static pressure method involves slow and uniform loading, without impact or reflected stress waves. The construction stress is small and easy to control. The pile driving depth of the static pressure method is deeper than that of the hammer driving method, and the quality of the pile head after driving is more reliable. The static pressure pile driver has a much stronger ability to pull out long pile drivers than the pile driver. Therefore, the amount of PHC pipe piles cut off after the foundation pit is excavated is much smaller than that of the hammer driving method, making it especially suitable for building projects with multi-story basements.

[0004] However, when the existing equipment is in use, the large downward pressure generated by the pile driver makes it difficult to protect the pipe pile after the existing guide frame fixes it, which makes it easy for the pile driver to damage it and cause inconvenience. The existing guide frame has a complex structure, is cumbersome to install, and is inconvenient to install and disassemble. Summary of the Invention

[0005] This invention provides a PHC pipe pile driving guide frame and a PHC pipe pile driving method, which aims to solve the problems that existing pipe pile guide frames do not provide protection for pipe piles and are prone to damage to pipe piles, and that existing pipe pile structures are complex and inconvenient to install.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The PHC pipe pile driving guide frame disclosed in this invention includes a guide frame body, the body including an installation mechanism, a positioning cylinder provided at the lower end of the installation mechanism, and an elastic mechanism provided between the installation mechanism and the positioning cylinder.

[0008] Furthermore, the installation mechanism includes a limiting groove and a mounting clip. The bottom of the limiting groove is fixedly disposed within the mounting clip, and the opening of the limiting groove faces the same direction as the opening of the mounting clip. The elastic mechanism is fixedly disposed within the limiting groove.

[0009] Furthermore, the elastic mechanism includes a buffer plate, which is fixedly disposed at the bottom of the limiting groove. A connecting plate is disposed below the buffer plate, and the connecting plate is provided with a limiting plate facing the buffer plate. A compression spring is connected between the buffer plate and the connecting plate, and the two ends of the compression spring are respectively fixedly disposed on the buffer plate and the connecting plate. When the compression spring is in a free state, there is a gap between the limiting plate and the buffer plate. The compression or extension of the compression spring causes the connecting plate to slide back and forth along its axial direction within the limiting groove.

[0010] Furthermore, the connecting plate and the buffer plate are respectively provided with opposing guide cylinders and guide rods. One end of the compression spring is sleeved on the guide rod, and the other end of the compression spring is sleeved inside the guide cylinder. The free end of the guide rod is sleeved inside the free end of the guide cylinder. The compression spring compresses or extends, causing the guide rod to slide back and forth inside the guide cylinder.

[0011] Furthermore, the buffer plate has a guide hole, and a support rod passes through the guide hole. The fixed end of the support rod passes through the guide hole and is fixedly connected to the guide rod. The compression spring is fixedly connected to the guide rod. The radial dimension of the free end of the support rod is larger than the diameter of the guide hole, and the radial dimension of the fixed end of the support rod is smaller than the diameter of the guide hole. The outer diameter of the compression spring is larger than the diameter of the guide hole. When the compression spring is in a free state, there is a gap between the free end of the support rod and the buffer plate.

[0012] Furthermore, a rubber pad is provided on the top surface of the buffer plate, and when the compression spring is in a free state, the rubber pad is located below the free end of the support rod.

[0013] Furthermore, the free end of the support rod is provided with an anti-slip layer.

[0014] Furthermore, the connecting plate has a connecting hole, the inner wall of the connecting hole has an internal thread, one end of the positioning cylinder is closed, the closed end face of the positioning cylinder has a protrusion facing outward, the protrusion has an external thread that mates with the internal thread of the connecting hole, and the outer wall of the positioning cylinder is provided with a protective sleeve.

[0015] Furthermore, the positioning cylinder has at least one screw hole on its side wall, and a fastening screw is provided in the screw hole. The positioning cylinder has a pressure plate inside, and the fixed end of the fastening screw passes through the screw hole and is fixedly connected to the pressure plate.

[0016] The PHC pipe pile driving guide frame based on the above structure includes the following steps:

[0017] S1: Adjust the fastening screw by unscrewing it, and adjust the position of the pressure plate by adjusting the fastening screw so that the pressure plate contacts the inner wall of the positioning cylinder. Place the pipe pile in the positioning cylinder, and screw in the adjusting fastening screw so that the pressure plate and the outer wall of the pipe pile abut against each other, and fix the pipe pile in the positioning cylinder.

[0018] S2: Then, the boss of the positioning cylinder is threaded into the connecting hole of the connecting plate, and the PHC pipe pile driving guide frame is fixedly installed at the lower end of the driving device by the mounting clamp.

[0019] S3: Start the pile driving equipment to perform static pressure pile driving.

[0020] The beneficial effects of this invention are as follows: The PHC pipe pile driving guide frame of this application consists of an installation mechanism, an elastic mechanism, and a positioning cylinder. In use, the installation mechanism is fixed to the driving equipment, and the positioning cylinder is fitted and fixed onto the PHC pipe pile. After driving, the positioning cylinder is removed from the PHC pipe pile, and the installation mechanism is removed from the driving equipment. The structure is simple and easy to install and disassemble. An elastic mechanism is provided between the installation mechanism and the positioning cylinder. When the driving equipment is activated for static pressure driving, the pressure applied by the driving equipment acts directly on the elastic mechanism, not directly on the PHC pipe pile, reducing damage to the PHC pipe pile structure. The pressure applied by the driving equipment directly acts on the elastic mechanism, causing it to compress. This compression generates a reaction force, which offsets part of the pressure from the driving equipment, reducing the pressure on the pipe pile and minimizing impact on the PHC pipe pile structure. Therefore, the elastic mechanism effectively buffers the impact, preventing damage to the PHC pipe pile structure, effectively protecting the PHC pipe pile, and reducing driving costs. Attached Figure Description

[0021] Figure 1 This is an exploded view of the PHC pipe pile driving guide frame of the present invention;

[0022] Figure 2 This is an assembly diagram of the PHC pipe pile driving guide frame of the present invention;

[0023] Figure 3 This is an exploded view of the elastic mechanism in the embodiment;

[0024] Figure 4 This is a schematic diagram of the positioning cylinder, fastening screw, and pressure plate in the embodiment;

[0025] Figure 5 This is a schematic diagram of the connecting plate in the embodiment.

[0026] Reference numerals: 1. Guide frame body; 2. Mounting clamp; 3. Limiting groove; 4. Elastic mechanism; 5. Positioning cylinder; 501. Boss; 6. Anti-slip layer; 7. Rubber pad; 8. Buffer plate; 9. Support rod; 10. Guide rod; 11. Compression spring; 12. Connecting plate; 13. Limiting plate; 14. Connecting hole; 15. Guide cylinder; 16. Fastening screw; 17. Pressure plate; 18. Protective sleeve. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment provides a PHC pipe pile driving guide frame, including a guide frame body 1. The body includes an installation mechanism, and a positioning cylinder 5 is provided at the lower end of the installation mechanism. An elastic mechanism 4 is provided between the installation mechanism and the positioning cylinder 5. The guide frame body 1 is composed of the installation mechanism, the elastic mechanism 4, and the positioning cylinder 5 connected sequentially from top to bottom.

[0029] Based on the above structure, the PHC pipe pile driving guide frame consists of an installation mechanism, an elastic mechanism 4, and a positioning cylinder 5 connected sequentially from top to bottom. The structure is simple. The installation mechanism is used to install and fix the guide frame body 1 on the driving equipment. The positioning cylinder 5 is used to fix and limit the PHC pipe pile. The upper end of the PHC pipe pile is fixedly installed in the positioning cylinder 5. The elastic mechanism 4 is used to buffer the instantaneous pressure given by the driving equipment. After the pile driving is completed, the positioning cylinder 5 can be removed from the PHC pipe pile and the installation mechanism can be removed from the driving equipment, which is convenient for installation and disassembly. In the static pressure pile driving preparation stage, the guide frame body 1 is fixedly installed on the pile driving device through the installation mechanism, and the upper end of the PHC pipe pile to be used for pile driving is fixedly installed in the positioning cylinder 5. In the static pressure pile driving stage, the pile driving device is activated for static pressure pile driving. At the moment of activation, the pressure applied by the pile driving device suddenly increases sharply, directly acting on the PHC pipe pile, which can easily damage the PHC pipe pile structure. This PHC pipe pile driving guide frame incorporates an elastic mechanism 4 between the installation mechanism and the positioning cylinder 5. At the moment of activation, the pressure applied by the pile driving device acts on the elastic mechanism, preventing damage. The pressure applied by the pile driving device directly acts as a buffer, reducing damage to the PHC pipe pile structure. The pressure applied by the pile driving device acts directly on the elastic mechanism, causing the elastic mechanism to compress. The compression of the elastic mechanism generates a reaction force, which offsets part of the pressure from the pile driving device. This reduces the pressure from the pile driving device, further reducing damage to the PHC pipe pile structure. The reaction force of the elastic mechanism acts as a buffer, reducing the impact force of the pile driving device on the PHC pipe pile, preventing damage to the PHC pipe pile, effectively protecting the PHC pipe pile, and reducing pile driving costs.

[0030] Specifically, the installation mechanism includes a limiting groove 3 and an installation clip 2. The bottom of the limiting groove 3 is fixedly disposed in the installation clip 2, and the opening of the limiting groove 3 faces the same direction as the opening of the installation clip 2. The elastic mechanism 4 is fixedly disposed in the limiting groove 3.

[0031] The elastic mechanism 4 is installed and fixed in the limiting groove 3. The limiting groove 3 plays a good role in installing and fixing the elastic mechanism 4. The mounting clip 2 is used for installation and fixing with the pile driving device. A fixing bolt is set on the top of the mounting clip 2. The mounting clip 2 and the pile driving device are fixedly installed by bolts. The limiting groove 3 and the mounting clip 2 are connected by bolts. The mounting clip 2 is clamped at both ends of the limiting groove 3, and both ends are fixed with bolts respectively.

[0032] The elastic mechanism 4 includes a buffer plate 8, which is fixedly disposed at the bottom of the limiting groove 3. A connecting plate 12 is disposed below the buffer plate 8, and the connecting plate 12 is provided with a limiting plate 13 facing the buffer plate 8. A compression spring 11 is connected between the buffer plate 8 and the connecting plate 12. The two ends of the compression spring 11 are respectively fixedly disposed on the buffer plate 8 and the connecting plate 12. When the compression spring 11 is in a free state, there is a gap between the limiting plate 13 and the buffer plate 8. The compression or extension of the compression spring 11 causes the connecting plate 12 to slide back and forth along its axial direction in the limiting groove 3.

[0033] When the pile driving equipment is activated for static pressure pile driving, the mounting clamp 2 moves downward under the pressure of the pile driving equipment, causing the limiting groove 3 to move downward under force. The limiting groove 3 causes the buffer plate 8 to move downward under force, which in turn causes the compression spring 11 to move downward under force. The compression spring 11 is compressed and does not directly act on the PHC pipe pile, thus playing an effective buffering role. The compression spring 11 generates a reaction force, which offsets part of the pressure from the buffer plate 8, reducing the pressure on the PHC pipe pile, reducing the impact of the pile driving equipment on the PHC pipe pile, and further reducing the damage to the PHC pipe pile structure. This effectively protects the PHC pipe pile from damage caused by the pile driving equipment. The compression spring 11 is compressed, reducing the distance between the buffer plate 8 and the connecting plate 12. The limiting plate 13 prevents the compression spring 11 from continuously compressing and failing, effectively protecting the compression spring 11 and increasing its service life, thereby increasing the service life of the PHC pipe pile driving guide frame. The connecting plate 12 slides along the wall of the limiting groove 3. The buffer plate 8 can be fixed to the bottom of the limiting groove 3 with bolts. Multiple heat dissipation holes can be opened on the side wall of the limiting groove 3 to increase the service life of the PHC pipe pile driving guide frame. The compression spring 11 is vertically welded between the buffer plate 8 and the connecting plate 12, and the two ends of the compression spring 11 are respectively welded to the buffer plate 8 and the connecting plate 12.

[0034] Preferably, the connecting plate 12 and the buffer plate 8 are respectively provided with opposing guide cylinders 15 and guide rods 10. One end of the compression spring 11 is sleeved on the guide rod 10, and the other end of the compression spring 11 is sleeved inside the guide cylinder 15. The free end of the guide rod 10 is sleeved inside the free end of the guide cylinder 15. The compression spring 11 compresses or extends, causing the guide rod 10 to slide back and forth inside the guide cylinder 15.

[0035] The guide cylinder 15 and guide rod 10 are designed to allow the compression spring 11 to extend or compress back and forth along the common axis of the guide cylinder 15 and guide rod 10. The compression spring 11 will not bend or deform, thus preventing the buffering effect from deteriorating and increasing its service life. The guide cylinder 15 and guide rod 10 play a good guiding role.

[0036] The buffer plate 8 has a guide hole, through which a support rod 9 passes. The fixed end of the support rod 9 passes through the guide hole and is fixedly connected to the guide rod 10. The compression spring 11 is fixedly connected to the guide rod 10. The radial dimension of the free end of the support rod 9 is larger than the diameter of the guide hole, while the radial dimension of the fixed end of the support rod 9 is smaller than the diameter of the guide hole. The outer diameter of the compression spring 11 is larger than the diameter of the guide hole. When the compression spring 11 is in a free state, there is a gap between the free end of the support rod 9 and the buffer plate 8.

[0037] When the pile driving equipment is activated for static pressure pile driving, the mounting clamp 2 moves downward under the pressure of the pile driving equipment, causing the limiting groove 3 to move downward under force. The wall of the limiting groove 3 abuts against the free end of the support rod 9, causing the free end of the support rod 9 to move downward, which in turn causes the guide rod 10 to move downward. The guide rod 10 then compresses the compression spring 11, which provides effective cushioning. The compression spring 11 generates a reaction force, which offsets part of the pressure from the limiting groove 3, reducing the pressure on the PHC pipe pile, reducing the impact of the pile driving equipment on the PHC pipe pile, further reducing damage to the PHC pipe pile structure, preventing damage to the PHC pipe pile by the pile driving equipment, and effectively protecting the PHC pipe pile.

[0038] Preferably, a rubber pad 7 is provided on the top surface of the buffer plate 8, and when the compression spring 11 is in a free state, the rubber pad 7 is located below the free end of the support rod 9.

[0039] The rubber pad 7 serves as an effective buffer and limiting protection, preventing the free end of the support rod 9 from being pressed too tightly against the buffer plate 8, causing adhesion and preventing the free end of the support rod 9 from rising smoothly to restore its original position, resulting in a deterioration or even failure of the compression spring 11.

[0040] Preferably, the top surface of the free end of the support rod 9 is provided with an anti-slip layer 6.

[0041] The anti-slip layer 6 prevents the free end of the support rod 9 from slipping under pressure during static pressure pile driving by the pile driving machine, which is not conducive to the compression of the compression spring 11, resulting in a poor buffering effect and failing to properly protect the PHC pipe pile.

[0042] The connecting plate 12 has a connecting hole 14, the inner wall of the connecting hole 14 is provided with an internal thread, one end of the positioning cylinder 5 is closed, the closed end face of the positioning cylinder 5 is provided with a boss 501 protruding outward, the boss 501 is provided with an external thread that matches the internal thread of the connecting hole 14, and the outer wall of the positioning cylinder 5 is provided with a protective sleeve 18.

[0043] The connecting hole 14 facilitates the installation of PHC pipe piles, and the threaded connection between the connecting plate 12 and the positioning cylinder 5 facilitates disassembly and installation. The protective sleeve 18 effectively prevents damage to the positioning cylinder 5, such as deformation under pressure.

[0044] The positioning cylinder 5 has at least one screw hole on its side wall, and a fastening screw 16 is provided in the screw hole to cooperate with it. The positioning cylinder 5 has a pressure plate 17 inside, and the fixed end of the fastening screw 16 passes through the screw hole and is fixedly connected to the pressure plate 17.

[0045] The pressure plate 17 serves to fix and limit the PHC pipe pile, ensuring a more stable installation within the positioning cylinder 5. Adjusting the fastening screw 16 allows for the installation of different models of PHC pipe piles. For example, if two opposing screw holes are provided on the side wall of the positioning cylinder 5, the relative position of the PHC pipe pile within the cylinder 5 can be better adjusted, accommodating different models of PHC pipe piles. Furthermore, if three screw holes are evenly distributed on the side wall of the positioning cylinder 5, with all three holes on the same plane, the installation of the PHC pipe pile will be even more secure.

[0046] The PHC pipe pile driving method based on the PHC pipe pile driving guide frame in the above embodiments includes the following steps:

[0047] S1: Adjust the fastening screw 16 by turning it out. Adjust the position of the pressure plate 17 by adjusting the fastening screw 16 so that the pressure plate 17 contacts the inner wall of the positioning cylinder 5. Place the pipe pile in the positioning cylinder 5. Adjust the fastening screw 16 by turning it in so that the pressure plate 17 abuts against the outer wall of the pipe pile. Fix the pipe pile in the positioning cylinder 5.

[0048] S2: Then, the boss 501 of the positioning cylinder 5 is threaded into the connecting hole 14 of the connecting plate 12, and the PHC pipe pile driving guide frame is fixedly installed at the lower end of the driving device by the mounting clamp 2.

[0049] S3: Start the pile driving equipment to perform static pressure pile driving.

[0050] The fastening screw 16 and pressure plate 17 effectively and securely install the PHC pipe pile inside the positioning cylinder 5. The compression spring 11 in the PHC pipe pile driving guide frame plays an effective buffering role. By using the above-mentioned PHC pipe pile driving method, during static pressure driving, it can prevent the driving equipment from damaging the structure of the PHC pipe pile, effectively protect the PHC pipe pile, and enable the PHC pipe pile to be driven quickly, effectively and safely, reducing the cost of driving.

Claims

1. A PHC pipe pile driving guide frame, comprising a guide frame body (1), wherein the body includes an installation mechanism, characterized in that, The lower end of the installation mechanism is provided with a positioning cylinder (5), and an elastic mechanism (4) is provided between the installation mechanism and the positioning cylinder (5). The installation mechanism includes a limiting groove (3) and an installation clamp (2). The bottom of the limiting groove (3) is fixedly disposed in the installation clamp (2), and the opening of the limiting groove (3) faces the same direction as the opening of the installation clamp (2). The elastic mechanism (4) is fixedly disposed in the limiting groove (3). The elastic mechanism (4) includes a buffer plate (8), which is fixedly disposed at the bottom of the limiting groove (3). A connecting plate (12) is provided below the buffer plate (8), and the connecting plate (12) is provided with a limiting plate (13) facing the buffer plate (8). A compression spring (11) is connected between the plate (8) and the connecting plate (12). The two ends of the compression spring (11) are fixedly mounted on the buffer plate (8) and the connecting plate (12) respectively. When the compression spring (11) is in a free state, there is a gap between the limiting plate (13) and the buffer plate (8). The compression spring (11) compresses or extends, causing the connecting plate (12) to slide back and forth along its axial direction in the limiting groove (3). The connecting plate (12) and the buffer plate (8) are respectively provided with opposing guide cylinders (15) and guide rods (10). One end of the compression spring (11) is sleeved on the guide rod (10), and the other end of the compression spring (11) is sleeved on the guide cylinder (15). 15) Inside, the free end of the guide rod (10) is sleeved inside the free end of the guide cylinder (15). The compression spring (11) compresses or extends, causing the guide rod (10) to slide back and forth inside the guide cylinder (15). The buffer plate (8) has a guide hole, and a support rod (9) passes through the guide hole. The fixed end of the support rod (9) passes through the guide hole and is fixedly connected to the guide rod (10). The compression spring (11) is fixedly connected to the guide rod (10). The radial dimension of the free end of the support rod (9) is larger than the diameter of the guide hole. The radial dimension of the fixed end of the support rod (9) is smaller than the diameter of the guide hole. The outer diameter of the compression spring (11) is larger than the diameter of the guide hole. The diameter of the hole is specified. When the compression spring (11) is in a free state, there is a gap between the free end of the support rod (9) and the buffer plate (8). The connecting plate (12) is provided with a connecting hole (14). The inner wall of the connecting hole (14) is provided with an internal thread. One end of the positioning cylinder (5) is closed. A boss (501) is provided on the closed end face of the positioning cylinder (5) facing outward. The boss (501) is provided with an external thread that matches the internal thread of the connecting hole (14). A protective sleeve (18) is provided on the outer wall of the positioning cylinder (5). The pipe pile is fixed in the positioning cylinder (5). When the pile driving machine is started to drive the pile under static pressure, the mounting clamp (2) moves downward under the pressure of the pile driving machine, which drives the limiting groove (3) to move downward under force.The wall of the limiting groove (3) abuts against the free end of the support rod (9), causing the free end of the support rod (9) to be stressed and causing the guide rod (10) to move downwards. The guide rod (10) then compresses the compression spring (11).

2. The PHC pipe pile driving guide frame according to claim 1, characterized in that, The top surface of the buffer plate (8) is provided with a rubber pad (7). When the compression spring (11) is in a free state, the rubber pad (7) is located below the free end of the support rod (9).

3. The PHC pipe pile driving guide frame according to claim 2, characterized in that, The top surface of the free end of the support rod (9) is provided with an anti-slip layer (6).

4. The PHC pipe pile driving guide frame according to claim 3, characterized in that, The positioning cylinder (5) has at least one screw hole on its side wall, and a fastening screw (16) is provided in the screw hole. The positioning cylinder (5) has a pressure plate (17) inside, and the fixed end of the fastening screw (16) passes through the screw hole and is fixedly connected to the pressure plate (17).

5. A PHC pipe pile driving method with the PHC pipe pile driving guide frame as described in claim 4, characterized in that, Includes the following steps: S1: Adjust the fastening screw (16) by turning it out. Adjust the position of the pressure plate (17) by adjusting the fastening screw (16) so that the pressure plate (17) contacts the inner wall of the positioning cylinder (5). Place the pipe pile in the positioning cylinder (5). Adjust the fastening screw (16) by turning it in so that the pressure plate (17) abuts against the outer wall of the pipe pile and fixes the pipe pile in the positioning cylinder (5). S2: Then the boss (501) of the positioning cylinder (5) is threaded into the connecting hole (14) of the connecting plate (12), and the PHC pipe pile driving guide frame is fixedly installed at the lower end of the driving device by the mounting clip (2). S3: Start the pile driving equipment to perform static pressure pile driving.

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