PHC pipe pile construction device and method

Abstract

The invention discloses a PHC pipe pile construction device and method, and relates to the technical field of pile foundation construction, the bottom end of a slag discharging pipe of the construction device is used for being arranged at the bottom of a PHC pipe pile, the top end of the slag discharging pipe extends out of the PHC pipe pile, a liquid conveying device is used for being arranged between the PHC pipe pile and the slag discharging pipe, and an air conveying device is used for being arranged between the PHC pipe pile and the slag discharging pipe. And the liquid conveying device and the air conveying device are used for conveying water and high-pressure air to the bottom of the PHC pipe pile, forming a gas-liquid mixture with sludge and discharging the gas-liquid mixture through the slag discharging pipe. According to the PHC pipe pile construction device, the slag discharging pipe is arranged in the middle of the PHC pipe pile, water and high-pressure air are conveyed to the bottom of the PHC pipe pile through the liquid conveying device and the air conveying device, the water, the high-pressure air and sludge at the bottom of the PHC pipe pile form a gas-liquid mixture, the gas-liquid mixture is discharged from the slag discharging pipe, manual slag pulling-out or sediment removing through rotary excavating is not needed, and the construction efficiency is improved. The labor intensity and the cost are reduced, and the hole cleaning efficiency and the hole cleaning quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation construction, and in particular to a PHC pipe pile construction device and method. Background Art

[0002] PHC piles are also called prestressed high-strength concrete piles. They have the characteristics of high strength, convenient construction, and high single pile bearing capacity. They are widely used in engineering foundations such as high-rise buildings, railways, roads and bridges, docks, and large equipment. In order to increase their bending resistance, reinforced concrete needs to be poured inside the PHC piles. Since most of the PHC piles buried deep in the ground are bottom-opening, after the PHC piles are driven, the silt and other sediment in the PHC pile holes need to be cleared, and then the steel cage is hoisted for concrete pouring.

[0003] In the prior art, the silt and sediment inside the PHC pile are removed by manual slag removal or rotary drilling. However, manual slag removal is labor-intensive, costly, and has low hole cleaning efficiency, while rotary drilling is prone to residual slurry and silt on the pipe wall, which is not completely removed. Summary of the invention

[0004] The embodiment of the present invention provides a PHC pipe pile construction device and method to solve the technical problems in the related art that the existing manual slag removal has high labor intensity and high cost, the hole cleaning efficiency is low, the rotary drilling hole cleaning is prone to residual slurry and silt on the pipe wall, and the cleaning is not thorough.

[0005] In a first aspect, a PHC pile construction device is provided, comprising:

[0006] A slag discharge pipe, the bottom end of which is arranged at the bottom of the PHC pile, and the top end of which extends to the outside of the PHC pile;

[0007] A liquid conveying device, the liquid conveying device is used to be arranged between the PHC pile and the slag discharge pipe;

[0008] An air conveying device, the air conveying device is used to be arranged between the PHC pile and the slag discharge pipe;

[0009] The liquid conveying device and the air conveying device are used to convey water and high-pressure air to the bottom of the PHC pile and form a gas-liquid mixture with the sludge and discharge it through the slag discharge pipe.

[0010] In some embodiments, the liquid delivery device comprises:

[0011] A water pump, the water pump is used to be arranged outside the pile mouth of the PHC pile;

[0012] A water pipe, one end of which is connected to the water pump, and the other end of which extends to the top of the PHC pile, and the water pipe is located between the PHC pile and the slag discharge pipe.

[0013] In some embodiments, the air delivery device comprises:

[0014] An air compressor, the air compressor is used to be arranged outside the pile mouth of the PHC pile;

[0015] A high-pressure air pipe, one end of which is connected to the air compressor, and the other end of which extends to the bottom of the PHC pile, and the high-pressure air pipe is located between the PHC pile and the slag discharge pipe.

[0016] In some embodiments, the PHC pile construction device further includes:

[0017] A vibrating steel pipe, the bottom end of which is arranged at the bottom of the PHC pile, and the bottom of the vibrating steel pipe is serrated;

[0018] A vibrating hammer is arranged at the top of the vibrating steel pipe and is used to loosen the soil at the bottom of the PHC pile by the vibrating steel pipe.

[0019] In some embodiments, the PHC pile construction device further includes:

[0020] A material distribution device, the bottom end of which is arranged inside the PHC pile, and is used to transport concrete into the PHC pile.

[0021] In some embodiments, the material distribution device includes:

[0022] The conduit is used to be arranged inside the PHC pile, and the bottom end of the conduit extends to the bottom of the PHC pile, and a hopper is arranged at the top of the conduit.

[0023] In some embodiments, the catheter is a full-length steel tube, and a scale is provided on the surface of the catheter.

[0024] In a second aspect, a PHC pile construction method is provided, using the aforementioned PHC pile construction device, comprising the following steps:

[0025] The bottom end of the slag discharge pipe is arranged at the bottom of the PHC pile, the top end of the slag discharge pipe is extended to the outside of the PHC pile, and a liquid conveying device and an air conveying device are arranged between the PHC pile and the slag discharge pipe;

[0026] Water and high-pressure air are transported to the bottom of the PHC pile through the liquid transport device and the air transport device, and form a gas-liquid mixture with the sludge and are discharged from the slag discharge pipe.

[0027] In some embodiments, after the step of conveying water and high-pressure air to the bottom of the PHC pile by the liquid conveying device and the air conveying device and forming a gas-liquid mixture with the sludge and discharging it from the slag discharge pipe, the method further includes:

[0028] Remove the slag discharge pipe, liquid conveying device and air conveying device, and hang the steel cage on the wall of the PHC pile;

[0029] A material distribution device is arranged inside the steel cage, and concrete is transported to the inside of the PHC pile through the material distribution device.

[0030] In some embodiments, the step of hanging the steel cage on the wall of the PHC pile includes:

[0031] A plurality of L-shaped steel bars are arranged on the main bars at the top of the steel cage, and a circular steel plate is arranged at the bottom of the steel cage;

[0032] Use a crane to lower the steel cage into the PHC pile, connect multiple L-shaped steel bars to the PHC pile wall and hang the steel cage on the wall.

[0033] The beneficial effects brought about by the technical solution provided by the present invention include:

[0034] The embodiment of the present invention provides a PHC pipe pile construction device and method, the construction device includes a slag discharge pipe, a liquid conveying device and an air conveying device, the bottom end of the slag discharge pipe is used to be arranged at the bottom of the PHC pipe pile, the top end of the slag discharge pipe extends to the outside of the PHC pipe pile, the liquid conveying device is used to be arranged between the PHC pipe pile and the slag discharge pipe, the air conveying device is used to be arranged between the PHC pipe pile and the slag discharge pipe, the liquid conveying device and the air conveying device are used to convey water and high-pressure air to the bottom of the PHC pipe pile and form a gas-liquid mixture with sludge and discharge it through the slag discharge pipe. The PHC pipe pile construction device of the embodiment of the present invention sets the slag discharge pipe in the middle of the PHC pipe pile, and conveys water and high-pressure air to the bottom of the PHC pipe pile through the liquid conveying device and the air conveying device, the water and high-pressure air form a gas-liquid mixture with the sludge at the bottom of the PHC pipe pile and are discharged from the slag discharge pipe, without the need for manual slag removal or rotary excavation to remove sediment, reducing labor intensity and cost, and improving hole cleaning efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0036] Figure 1A schematic structural diagram of a PHC pipe pile construction device provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of a vibrating steel pipe and a vibrating hammer provided in an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the structure of a material distribution device provided in an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the structure of a steel cage provided by an embodiment of the present invention;

[0040] Figure 5 An overall flow chart of a PHC pile construction method provided by an embodiment of the present invention;

[0041] Figure 6 A partial flow chart of a PHC pile construction method provided by an embodiment of the present invention;

[0042] Reference numerals:

[0043] 1. Slag discharge pipe;

[0044] 2. PHC piles;

[0045] 3. Liquid conveying device; 31. Water pump; 32. Water pipe;

[0046] 4. Air conveying device; 41. Air compressor; 42. High-pressure air pipe;

[0047] 5. Vibrate the steel pipe;

[0048] 6. Vibratory hammer;

[0049] 7. Material distribution device; 71. Conduit; 711. Hopper. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The embodiment of the present invention provides a PHC pipe pile construction device and method, which can solve the technical problems in the related art that the existing manual slag removal has high labor intensity and cost, the hole cleaning efficiency is low, the rotary drilling hole cleaning is prone to residual slurry and silt on the pipe wall, and the cleaning is not thorough.

[0052] Figure 1A PHC pipe pile construction device is provided in an embodiment of the present invention, comprising: a slag discharge pipe 1, a liquid conveying device 3 and an air conveying device 4, wherein the bottom end of the slag discharge pipe 1 is used to be arranged at the bottom of the PHC pipe pile 2, and the top end of the slag discharge pipe 1 extends to the outside of the PHC pipe pile 2, the liquid conveying device 3 is used to be arranged between the PHC pipe pile 2 and the slag discharge pipe 1, and the air conveying device 4 is used to be arranged between the PHC pipe pile 2 and the slag discharge pipe 1, and the liquid conveying device 3 and the air conveying device 4 are used to convey water and high-pressure air to the bottom of the PHC pipe pile 2 and form a gas-liquid mixture with sludge and discharge it through the slag discharge pipe 1.

[0053] A PHC pipe pile construction device provided in an embodiment of the present invention is provided with a slag discharge pipe, a liquid conveying device and an air conveying device, wherein the bottom end of the slag discharge pipe is used to be arranged at the bottom of the PHC pipe pile, and the top end of the slag discharge pipe extends to the outside of the PHC pipe pile, the liquid conveying device is used to be arranged between the PHC pipe pile and the slag discharge pipe, and the air conveying device is used to be arranged between the PHC pipe pile and the slag discharge pipe. The liquid conveying device and the air conveying device are used to convey water and high-pressure air to the bottom of the PHC pipe pile, and the water and the high-pressure air form a gas-liquid mixture with silt and sediment at the bottom of the PHC pipe pile, and the gas-liquid mixture is discharged from the slag discharge pipe through the air lift circulation principle, without the need for manual slag removal or rotary drilling to remove sediment, thereby reducing labor intensity and cost, improving hole cleaning efficiency and quality, and thoroughly cleaning the silt and sediment inside the PHC pipe pile.

[0054] As an optional implementation, in one embodiment of the invention, see Figure 1 As shown, the liquid conveying device 3 includes: a water pump 31 and a water pipe 32. The water pump 31 is used to be arranged outside the pile mouth of the PHC pile 2. One end of the water pipe 32 is connected to the water pump 31, and the other end extends to the top of the PHC pile 2. The water pipe 32 is located between the PHC pile 2 and the slag discharge pipe 1. The water pump 31 conveys water to between the PHC pile 2 and the slag discharge pipe 1 through the water pipe 32, and then the water flows to the bottom of the PHC pile 2 and mixes with silt and sediment.

[0055] As an optional implementation, in one embodiment of the invention, see Figure 1As shown, the air conveying device 4 includes: an air compressor 41 and a high-pressure air pipe 42, the air compressor 41 is used to be arranged outside the pile mouth of the PHC pile 2, one end of the high-pressure air pipe 42 is connected to the air compressor 41, and the other end extends to the bottom of the PHC pile 2, and the high-pressure air pipe 42 is located between the PHC pile 2 and the slag discharge pipe 1, the air compressor 41 conveys high-pressure air to the bottom of the PHC pile 2 through the high-pressure air pipe 42, and the height of the bottom end of the high-pressure air pipe 42 from the bottom of the PHC pile 2 is higher than the height of the slag discharge pipe 1 from the bottom of the PHC pile 2, the high-pressure air and water form a gas-liquid mixture with the sludge and sediment at the bottom of the PHC pile 2 and are discharged from the slag discharge pipe 1, so that the sludge and sediment inside the PHC pile are completely cleaned.

[0056] As an optional implementation, in one embodiment of the invention, see Figure 2 As shown, the PHC pile construction device also includes: a vibrating steel pipe 5 and a vibrating hammer 6. The bottom end of the vibrating steel pipe 5 is used to be arranged at the bottom of the PHC pile 2, and the bottom of the vibrating steel pipe 5 is serrated. The vibrating hammer 6 is arranged at the top of the vibrating steel pipe 5, and is used to loosen the soil at the bottom of the PHC pile 2 by the vibrating steel pipe 5. If harder soil is encountered, the vibrating steel pipe 5 is inserted into the PHC pile 2, and the vibrating hammer 6 is used to vibrate the vibrating steel pipe 5. The vibrating steel pipe 5 is inserted and vibrated at different positions several times. After the soil at the bottom of the PHC pile 2 is loosened, the slag discharge pipe 1 is inserted and the liquid conveying device 3 and the air conveying device 4 are arranged to remove the silt inside the PHC pile 2. The bottom of the vibrating steel pipe 5 is serrated to improve the efficiency of the vibrating steel pipe 5 in loosening the soil. Steel plates can also be used to thicken and reinforce the bottom of the vibrating steel pipe 5.

[0057] As an optional implementation, in one embodiment of the invention, see Figure 3 As shown, the PHC pile construction device also includes: a placing device 7, the bottom end of which is used to be arranged inside the PHC pile 2, and is used to transport concrete into the PHC pile 2. The bottom end of the placing device 7 is arranged at the bottom of the PHC pile 2, and the top end of the placing device 7 extends to the outside of the PHC pile 2. A placing machine is used to transport concrete into the PHC pile 2 through the placing device 7 to fill the PHC pile 2.

[0058] As an optional implementation, in one embodiment of the invention, see Figure 3As shown, the material distribution device 7 includes: a conduit 71, the conduit 71 is used to be arranged inside the PHC pile 2, and the bottom end of the conduit 71 extends to the bottom of the PHC pile 2, a hopper 711 is arranged at the top of the conduit 71, the conduit 71 is a hollow structure, the length of the conduit 71 is 2 meters longer than the concrete filling depth inside the PHC pile 2, the inner diameter of the conduit 71 is 200 mm, and a 0.6-meter square hopper is welded at the top of the conduit 71, concrete is poured into the hopper 711 by a material distribution machine, and then the concrete is transported to the inside of the PHC pile 2 through the conduit 71, which reduces the installation and removal process of the conduit 71 and improves the concrete pouring and construction efficiency.

[0059] As an optional implementation, in an embodiment of the invention, see Figure 3 As shown, the conduit 71 is a full-length steel pipe, and a scale is provided on the surface of the conduit 71. The scale interval on the surface of the conduit 71 is 0.5 meters. The depth of the currently poured concrete inside the PHC pile 2 can be measured at any time through the set scale, and the elevation of the concrete surface inside the PHC pile 2 can be measured at any time to ensure that the buried depth of the concrete inside the conduit 71 is not less than 2 meters.

[0060] The present invention also provides a PHC pile construction method, see Figure 1 and Figure 5 As shown, the following steps are included:

[0061] Step S10, the bottom end of the slag discharge pipe 1 is arranged at the bottom of the PHC pile 2, the top end of the slag discharge pipe 1 is extended to the outside of the PHC pile 2, and a liquid conveying device 3 and an air conveying device 4 are arranged between the PHC pile 2 and the slag discharge pipe 1;

[0062] Step S20 , water and high-pressure air are transported to the bottom of the PHC pile 2 through the liquid transport device 3 and the air transport device 4 , and the water and high-pressure air are mixed with the sludge to form a gas-liquid mixture and discharged from the slag discharge pipe 1 .

[0063] The PHC pipe pile construction method of the embodiment of the present invention sets the slag discharge pipe in the middle of the PHC pipe pile, sets a liquid conveying device 3 and an air conveying device 4 between the PHC pipe pile 2 and the slag discharge pipe 1, and conveys water and high-pressure air to the bottom of the PHC pipe pile through the liquid conveying device and the air conveying device. The water and the high-pressure air form a gas-liquid mixture with the silt at the bottom of the PHC pipe pile and are discharged from the slag discharge pipe. There is no need for manual slag removal or rotary drilling to remove sediment, which reduces labor intensity and cost and improves hole cleaning efficiency and quality.

[0064] As an optional implementation, in an embodiment of the invention, see Figure 6As shown, after the step of conveying water and high-pressure air to the bottom of the PHC pile 2 by the liquid conveying device 3 and the air conveying device 4 and forming a gas-liquid mixture with the sludge and discharging it from the slag discharge pipe 1, it also includes:

[0065] Step S30, removing the slag discharge pipe 1, the liquid conveying device 3 and the air conveying device 4, and hanging the steel cage on the wall of the PHC pile 2;

[0066] Step S40 , a material distribution device 7 is arranged inside the steel cage, and concrete is transported to the inside of the PHC pile 2 through the material distribution device 7 .

[0067] Specifically, see Figure 3 As shown, the slag discharge pipe 1 provided in the middle of the PHC pile is removed, the liquid conveying device 3 and the air conveying device 4 provided between the PHC pile 2 and the slag discharge pipe 1 are removed, the steel cage is lowered as a whole by a crane, and the steel cage is hung on the pipe wall of the PHC pile 2, and then the conduit 71 of the material distribution device 7 is set inside the steel cage by a crane, so that the bottom end of the conduit 71 extends to the bottom of the PHC pile 2, and the distance between the bottom end of the conduit 71 and the bottom of the steel cage is 300 mm, concrete is poured into the hopper 711 by a material distribution machine, and then the concrete is transported to the inside of the PHC pile 2 by the conduit 71, the conduit 71 is gradually lifted, and the elevation of the concrete surface inside the PHC pile 2 is measured at any time until the concrete pouring is completed.

[0068] As an optional implementation, in an embodiment of the invention, the step of hanging the steel cage on the wall of the PHC pile 2 includes:

[0069] A plurality of L-shaped steel bars are arranged on the main bars at the top of the steel cage, and a circular steel plate is arranged at the bottom of the steel cage;

[0070] A crane is used to lower the steel cage into the PHC pile 2, so that a plurality of L-shaped steel bars are connected to the wall of the PHC pile 2 and the steel cage is hung on the wall.

[0071] Specifically, see Figure 4 As shown, four L-shaped steel bars are arranged on the main bars at the top of the steel cage along the circumferential direction, and a circular steel plate with a thickness of 15 mm and a diameter 30 to 40 mm smaller than that of the PHC pile 2 is arranged at the bottom of the steel cage. When the steel cage is lowered into the PHC pile 2 by a crane, the long sides of the four L-shaped steel bars are overlapped on the pipe wall of the PHC pile 2, so that the steel cage is hung on the pipe wall of the PHC pile 2, which is convenient for continuing to set the guide tube 71 of the material distribution device 7 and pouring concrete on the PHC pile 2.

[0072] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0073] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0074] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those 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 should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A PHC pile construction device, characterized in that: include: A slag discharge pipe (1), wherein the bottom end of the slag discharge pipe (1) is arranged at the bottom of the PHC pile (2), and the top end of the slag discharge pipe (1) extends to the outside of the PHC pile (2); A liquid conveying device (3), the liquid conveying device (3) being arranged between the PHC pile (2) and the slag discharge pipe (1); An air conveying device (4), the air conveying device (4) being arranged between the PHC pile (2) and the slag discharge pipe (1); The liquid conveying device (3) and the air conveying device (4) are used to convey water and high-pressure air to the bottom of the PHC pile (2) and form a gas-liquid mixture with the sludge to be discharged through the slag discharge pipe (1).

2. The PHC pile construction device according to claim 1, characterized in that: The liquid delivery device (3) comprises: A water pump (31), the water pump (31) being arranged outside the pile opening of the PHC pile (2); A water pipe (32), one end of the water pipe (32) is connected to the water pump (31), and the other end extends to the top of the PHC pile (2), and the water pipe (32) is located between the PHC pile (2) and the slag discharge pipe (1).

3. The PHC pile construction device according to claim 1, characterized in that: The air conveying device (4) comprises: An air compressor (41), the air compressor (41) being arranged outside the pile opening of the PHC pile (2); A high-pressure air pipe (42), one end of which is connected to the air compressor (41), and the other end of which extends to the bottom of the PHC pile (2), and the high-pressure air pipe (42) is located between the PHC pile (2) and the slag discharge pipe (1).

4. The PHC pile construction device according to claim 1, characterized in that: Also includes: A vibrating steel pipe (5), the bottom end of which is arranged at the bottom of the PHC pile (2), and the bottom of the vibrating steel pipe (5) is serrated; A vibrating hammer (6), the vibrating hammer (6) being arranged at the top end of the vibrating steel pipe (5) and being used to loosen the soil at the bottom of the PHC pile (2) by the vibrating steel pipe (5).

5. The PHC pile construction device according to claim 1, characterized in that: Also includes: A material distribution device (7), the bottom end of which is arranged inside the PHC pipe pile (2) and is used to transport concrete into the PHC pipe pile (2).

6. The PHC pile construction device according to claim 5, characterized in that: The material distributing device (7) comprises: A conduit (71), the conduit (71) is used to be arranged inside the PHC pile (2), and the bottom end of the conduit (71) extends to the bottom of the PHC pile (2), and a hopper (711) is arranged at the top end of the conduit (71).

7. The PHC pile construction device according to claim 6, characterized in that: The conduit (71) is a full-length steel pipe, and a scale is provided on the surface of the conduit (71).

8. A PHC pile construction method, using the PHC pile construction device according to claim 1, characterized in that: The following steps are involved: The bottom end of the slag discharge pipe (1) is arranged at the bottom of the PHC pipe pile (2), the top end of the slag discharge pipe (1) is extended to the outside of the PHC pipe pile (2), and a liquid conveying device (3) and an air conveying device (4) are arranged between the PHC pipe pile (2) and the slag discharge pipe (1); Water and high-pressure air are transported to the bottom of the PHC pile (2) through a liquid transport device (3) and an air transport device (4) and form a gas-liquid mixture with the sludge and are discharged from the slag discharge pipe (1).

9. The PHC pile construction method according to claim 8, characterized in that: After the step of conveying water and high-pressure air to the bottom of the PHC pile (2) by the liquid conveying device (3) and the air conveying device (4) and forming a gas-liquid mixture with the sludge and discharging it from the slag discharge pipe (1), the method further comprises: Remove the slag discharge pipe (1), the liquid conveying device (3) and the air conveying device (4), and hang the steel cage on the wall of the PHC pile (2); A material distribution device (7) is arranged inside the steel cage, and concrete is transported to the inside of the PHC pipe pile (2) through the material distribution device (7).

10. The PHC pile construction method according to claim 9, characterized in that: The step of hanging the steel cage on the wall of the PHC pile (2) comprises: A plurality of L-shaped steel bars are arranged on the main bars at the top of the steel cage, and a circular steel plate is arranged at the bottom of the steel cage; A steel cage is lowered into the PHC pile (2) by a crane, a plurality of L-shaped steel bars are connected to the wall of the PHC pile (2), and the steel cage is hung on the wall.

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