Reinforced pile for soft soil subgrade site and construction method

Abstract

The application provides a reinforcing pile for a soft soil roadbed site and a construction method, and relates to the technical field of reinforcing piles.The reinforcing pile for a soft soil roadbed site comprises a steel reinforcement cage, the steel reinforcement cage is fixedly connected with three steel rings, the steel reinforcement cage is wrapped with a cylindrical concrete cylinder on the outside, the middle steel ring is rotationally connected with first pressing plates that are distributed in a circumferential direction at equal intervals, the lower steel ring is rotationally connected with second pressing plates that are distributed in a circumferential direction at equal intervals, all the first pressing plates correspond to all the second pressing plates one by one, first torsional springs and second torsional springs are arranged between the first pressing plates and the corresponding second pressing plates and the first pressing plates and the corresponding second pressing plates, and the first pressing plates and the corresponding second pressing plates are pressed against each other.The first pressing plates and the second pressing plates are inserted into the soil at the bottom of a pile hole, so that the contact area between the device and the bottom of the pile hole is increased, the pressure of the device on the soil at the bottom of the pile hole is reduced, the probability of sinking of the device is reduced, and the stability of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of reinforcement piles, in particular to a reinforcement pile for soft soil roadbed sites and a construction method. Background Art

[0002] Soft soil roadbed sites are prone to problems such as excessive roadbed settlement, instability, and long post-construction settlement time due to their low bearing capacity, high compressibility, poor permeability, and high sensitivity. Reinforced piles are one of the most commonly used and effective means of foundation reinforcement for soft soil roadbeds. The core principle is to transfer the upper load through the pile body to the deep soil layer with better bearing capacity or to improve the overall bearing capacity and stability of the composite foundation through pile-soil interaction (such as friction and displacement), and effectively control settlement.

[0003] When using existing reinforcement piles, the site is first leveled and drilled, and then the reinforcement piles are buried in the pile holes. Since the reinforcement piles bear a great weight, the pressure on the bottom of the pile hole is also great. In addition, the cross-section of the existing prefabricated reinforcement piles is annular. As the reinforcement piles installed in this way increase in use time, due to the small contact area and high pressure of the reinforcement piles, the reinforcement piles will still sink to a certain extent, affecting the quality and safety of the project. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a reinforcement pile for soft soil roadbed sites and a construction method.

[0005] In order to achieve the above objectives, the technical solutions adopted by the present invention are as follows:

[0006] A reinforced pile for a soft soil roadbed site includes a steel cage, wherein the steel cage is fixed with three steel rings arranged in a straight line, the steel cage is wrapped with a concrete cylinder, and the three steel rings are all bonded to the concrete cylinder. The middle steel ring is hinged with a first pressure plate distributed at equal intervals in the circumference, and the lower steel ring is hinged with a second pressure plate distributed at equal intervals in the circumference. All the first pressure plates and all the second pressure plates correspond to each other one by one, and a first torsion spring and a second torsion spring are respectively arranged between the first pressure plate and the second pressure plate and the corresponding steel ring, and the first pressure plate and the corresponding second pressure plate squeeze each other.

[0007] Preferably, a bent plate is hingedly connected to a side of the first pressure plate away from the concrete cylinder, and a lower side of the bent plate is bent toward a side close to the concrete cylinder.

[0008] Preferably, the second pressure plate is hinged with a rotating shell, the first pressure plate is hinged with a rotating rod, the rotating rod and the corresponding rotating shell are slidably connected, all the rotating shells are connected to a first connecting shell through a pipeline, the first connecting shell is provided with a second connecting shell, and the two are connected, the second connecting shell is connected to a water supply device, and the concrete cylinder is provided with pouring holes distributed at equal intervals in the circumference, and the pouring holes are located between the corresponding first pressure plate and the corresponding second pressure plate.

[0009] Preferably, the first connecting shell is slidably connected to a gate plate, and a first spring is provided between the two, the gate plate is fixedly connected to a stopper, the second connecting shell is fixedly connected to a fixed shell, a sliding member is slidably connected to the fixed shell, and a second spring is provided between the two, and the sliding member and the stopper squeeze each other.

[0010] Preferably, the second connecting shell is hinged with a buckle, and the second connecting shell is provided with a connecting hole, a sliding rod is slidably connected in the connecting hole, and the sliding rod is used to push the buckle to move.

[0011] Preferably, the sliding member is fixed with a sealing ring, and the sealing ring is used to seal the connecting hole.

[0012] Preferably, the thickness of the edge of the first pressure plate and the thickness of the edge of the second pressure plate are respectively smaller than the thickness of the middle parts of the two.

[0013] Preferably, the mass of the lower portion of the bent plate at the hinged connection with the first pressure plate is greater than the mass of the upper portion.

[0014] Preferably, the height of the sealing ring at the lower side of the connecting hole is greater than the height of the stopper.

[0015] A construction method for reinforcement piles for soft soil roadbed sites, based on the above-mentioned reinforcement piles for soft soil roadbed sites, comprises the following steps:

[0016] S1: Level the site, then drill two pile-embedding holes with different diameters, then connect the second connecting shell to the water supply device, and snap the first and second connecting shells together using a buckle. Then, move the bent plate downward along the inner wall of the pile-embedding hole;

[0017] S2: When the bent plate moves to the lower part of the pile hole, the first pressure plate drives the bent plate to move until it touches the inner wall of the lower part of the pile hole, and then continues to move downward until the bent plate contacts the bottom of the pile hole. At this time, pressure is continued to be applied to the upper steel ring, so that the first and second pressure plates are inserted into the soil at the bottom of the pile hole until the lower steel ring contacts the bottom of the pile hole;

[0018] S3: Start the water supply device. High-pressure water enters the first connecting shell through the second connecting shell and then enters the three rotating shells. Then, it pushes the rotating rod to move out of the rotating shell. At this time, the first pressure plate and the corresponding second pressure plate rotate in opposite directions, thereby pressing the nearby soil.

[0019] S4: As the water pressure in the second connecting shell increases, the water in the second connecting shell pushes the sliding member upward, which compresses the second spring and the air in the fixed shell. When the soil below the second pressure plate and the soil above the first pressure plate are compacted, the sliding member moves to separate from the block. After the block is no longer blocked, the gate plate moves under the action of the first spring and blocks the first connecting shell.

[0020] S5: After the sliding member moves to separate from the stopper, the sliding member continues to drive the blocking ring upward, so that the blocking ring releases the blockage of the connecting hole. Then, high-pressure water enters the connecting hole and pushes the sliding rod to move. The sliding rod pushes the buckle to move, causing the buckle to rotate, thereby releasing the lock of the first connecting shell and the second connecting shell. Then, the water supply device is closed and the pipeline is recovered.

[0021] S6: Cement is injected into the concrete cylinder. The cement enters the gap between the first pressure plate and the second pressure plate through the injection hole, thereby further reinforcing the pile body. At this point, the construction of the device is completed.

[0022] The beneficial technical effects of the present invention are:

[0023] The present invention inserts the first pressure plate and the second pressure plate into the soil at the bottom of the pile hole, thereby increasing the contact area between the device and the bottom of the pile hole, reducing the pressure of the device on the soil at the bottom of the pile hole, thereby reducing the probability of the device sinking and improving the stability of the device.

[0024] Water is injected into the rotating shell through the water supply device, so that the rotating rod moves outside the rotating shell, thereby causing the first pressure plate and the second pressure plate to squeeze the soil on their upper and lower sides respectively, making the soil at the bottom of the device more solid to improve its load-bearing capacity.

[0025] After the first and second pressure plates have finished pressurizing the soil, the sealing ring releases the blockage of the connecting hole, so that the high-pressure water pushes the sliding rod to move, and the sliding rod pushes the buckle to release the lock of the first connecting shell and the second connecting shell, so that the pipeline and the second connecting shell and the parts thereon can be recovered, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 An exploded view of the present invention;

[0028] Figure 3 A sectional view of the three-dimensional structure of the first and second pressure plates of the present invention;

[0029] Figure 4 A sectional view of the three-dimensional structure of the first connected shell and the second connected shell of the present invention;

[0030] Figure 5 It is a three-dimensional structural cross-sectional view of the fixed shell and the sealing ring of the present invention.

[0031] Reference numerals:

[0032] 1. Steel cage, 2. Steel ring, 3. Concrete cylinder, 301, Pouring hole, 4. First pressure plate, 5. Second pressure plate, 6. First torsion spring, 7. Second torsion spring, 8. Bending plate, 9. Rotating shell, 10. Rotating rod, 11. First connecting shell, 12. Second connecting shell, 1201, Connecting hole, 13. Gate, 14. First spring, 15. Stopper, 16. Fixed shell, 17. Sliding part, 18. Second spring, 19. Buckle, 20. Sliding rod, 21. Sealing ring. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and beneficial effects of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. Certain embodiments of the present invention will be more fully described below with reference to the accompanying drawings, some, but not all, of which are illustrated. The various embodiments of the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention satisfies applicable legal requirements.

[0034] In the description of the present invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In an embodiment of the present invention, a reinforcement pile and construction method for a soft soil roadbed site are provided. Please refer to Figures 1 to 5 shown.

[0036] Example 1

[0037] A reinforcement pile for soft soil roadbed site, please refer to Figure 1-Figure 3, including a steel cage 1, the steel cage 1 is composed of a plurality of vertical main steel bars and a plurality of horizontal auxiliary steel bars, the auxiliary steel bars are used to maintain the relative position of each main steel bar, the auxiliary steel bars are not shown in the figure, the steel cage 1 is fixed with three steel rings 2 arranged in a straight line, the upper and lower steel rings 2 both have the function of fixing the steel cage 1, the steel cage 1 is wrapped with a concrete cylinder 3, the three steel rings 2 are bonded to the concrete cylinder 3, after the steel cage 1 and the three steel rings 2 are connected, they are put into a mold, and the concrete cylinder 3 is added, and the concrete is centrifuged. The concrete cylinder 3 is formed into a cylindrical shape, and the middle steel ring 2 is hinged with three first pressure plates 4 distributed at equal intervals in the circumference, and the lower steel ring 2 is hinged with three second pressure plates 5 distributed at equal intervals in the circumference. The first pressure plate 4 and the second pressure plate 5 are both arc-shaped plates, and the positions of the three first pressure plates 4 and the three second pressure plates 5 correspond one to one. The first pressure plate 4 and the second pressure plate 5 are respectively provided with a first torsion spring 6 and a second torsion spring 7 between the corresponding steel ring 2, and the lower side of the first pressure plate 4 and the lower side of the corresponding second pressure plate 5 squeeze each other.

[0038] Please refer to Figure 1-Figure 3 A curved plate 8 is hinged to the underside of the first pressure plate 4. The underside of curved plate 8 curves toward the side closest to the concrete cylinder 3, ensuring that when curved plate 8 slides downward against the inner wall of the pile hole, the underside of curved plate 8 will not be inserted into the hole wall due to unevenness. The mass of the lower portion of curved plate 8 at the hinged connection with the first pressure plate 4 is greater than the mass of the upper portion, allowing the curved portion of curved plate 8 to droop downward, allowing it to remain in contact with the hole wall after the first pressure plate 4 rotates.

[0039] Please refer to Figure 2 and Figure 3, the middle part of the second pressure plate 5 is hinged with a rotating shell 9, the middle part of the first pressure plate 4 is hinged with a rotating rod 10, the rotating rod 10 and the corresponding rotating shell 9 are slidably connected, the rotating rod 10 consists of a round rod and a disc, the round rod and the disc of the rotating rod 10 are respectively slidably connected to the rotating shell 9 at different positions, wherein a seal is provided between the disc of the rotating rod 10 and the rotating shell 9, the seal is used to prevent liquid leakage, which is not shown in the figure, the three rotating shells 9 are commonly connected with a first connecting shell 11 through a pipeline, and a second connecting shell 12 is provided on the upper side of the first connecting shell 11, and the two are connected, the second connecting shell 12 is connected to the water supply device, and the water supply device is An existing device is used to inject water into the rotating shell 9, which will not be described in detail here. The concrete cylinder 3 is provided with six pouring holes 301 circumferentially evenly spaced, wherein two adjacent pouring holes 301 are located between the corresponding first pressure plate 4 and the corresponding second pressure plate 5, and the pouring holes 301 are located between the two steel rings 2 on the lower side. The pouring holes 301 are used to inject cement between the corresponding first pressure plate 4 and the second pressure plate 5, thereby fixing the position of the first pressure plate 4 and the second pressure plate 5, maintaining the pressure of the first pressure plate 4 and the second pressure plate 5 on the soil, and at the same time increasing the mass of the bottom of the reinforced pile, making the center of gravity of the reinforced pile lower and less likely to deflect.

[0040] Please refer to Figure 2-Figure 5 The first communicating shell 11 is slidably connected to the gate plate 13, and a first spring 14 is provided between the two. The first spring 14 is initially in a compressed state and is used to provide the force required for the gate plate 13 to move. A seal is provided between the gate plate 13 and the first communicating shell 11. The seal is used to prevent leakage and is not shown in the figure. A stopper 15 is fixed to the upper side of the gate plate 13. A fixed shell 16 is fixed to the second communicating shell 12. A sliding member 17 is slidably connected to the fixed shell 16. A seal is provided between the sliding member 17 and the fixed shell 16. The seal The sliding member 17 is used to prevent liquid leakage and is not shown in the figure. A second spring 18 is arranged between the two. The second spring 18 is initially in a compressed state, so that the water in the second connecting shell 12 will not move when it is initially pressurized. When the first pressure plate 4 and the second pressure plate 5 compact the soil, the water pressure in the second connecting shell 12 is sufficient to push the sliding member 17 to compress the second spring 18. The sliding member 17 and the block 15 squeeze each other. When the sliding member 17 and the block 15 are separated, the gate 13 moves under the action of the first spring 14.

[0041] When using this device, first level the site, then select a location to drill. The pile hole is divided into two parts, the lower part has a larger diameter than the upper part, and the upper part has a larger diameter than the concrete cylinder 3. After drilling, the second connecting shell 12 is connected to the water supply device through a pipe, and then the device is placed in the pile hole, and the bent plate 8 is attached to the inner wall of the pile hole. At this time, the first torsion spring 6 and the second torsion spring 7 are both in the storage state, that is, Figure 1In the state shown, the concrete cylinder 3 continues to move downward, and the concrete cylinder 3 drives the first pressure plate 4 and the second pressure plate 5 to move downward through the two steel rings 2 on the lower side. The first pressure plate 4 drives the bent plate 8 to move, and the bent plate 8 slides along the hole wall.

[0042] When the bent plate 8 moves to the lower part of the pile hole, the bent plate 8 loses the obstruction of the upper hole wall. Under the action of the first torsion spring 6 and the second torsion spring 7, the first pressure plate 4 and the second pressure plate 5 rotate, and the first pressure plate 4 drives the bent plate 8 to move to the inner wall of the lower part of the pile hole, and then continues to move downward until the bent plate 8 contacts the bottom of the pile hole. At this time, pressure is continued to be applied to the upper steel ring 2, so that the first pressure plate 4 and the second pressure plate 5 are inserted into the soil at the bottom of the pile hole until the lower steel ring 2 contacts the bottom of the pile hole. Then the water supply device is started, and high-pressure water enters the first connecting shell 11 through the second connecting shell 12, and then enters the three rotating shells 9, and then pushes the rotating rod 10 to move out of the rotating shell 9. At this time, the first pressure plate 4 and the corresponding second pressure plate 5 rotate in opposite directions, thereby compacting the nearby soil. At the same time, because the area of ​​the first pressure plate 4 is larger than that of the second pressure plate 5, the first pressure plate 4 is subjected to greater resistance, so the second pressure plate 5 rotates at a larger angle, pressing the soil more firmly.

[0043] As the soil gradually becomes more solid, the resistance encountered by the first pressure plate 4 and the second pressure plate 5 gradually increases, and the water pressure in the second connecting shell 12 also gradually increases. As the water pressure in the second connecting shell 12 increases, the water in the second connecting shell 12 pushes the sliding member 17 to move upward, and the sliding member 17 compresses the second spring 18 and the air in the fixed shell 16. When the soil on the lower side of the second pressure plate 5 and the soil on the upper side of the first pressure plate 4 are compacted sufficiently, the sliding member 17 moves to separate from the block 15. After the block 15 loses its obstruction, the gate plate 13 moves under the action of the first spring 14 and seals the first connecting shell 11, thereby maintaining the position of the first pressure plate 4 and the second pressure plate 5. Then the water supply device is closed, and cement is injected into the concrete cylinder 3. The cement enters the gap between the first pressure plate 4 and the second pressure plate 5 through the pouring hole 301, thereby further reinforcing the pile body.

[0044] Example 2

[0045] Based on Example 1, please refer to Figure 4The second connecting shell 12 is hinged with two clips 19, which are used to clamp the second connecting shell 12 and the first connecting shell 11 together. A sealing ring is provided on the lower side of the second connecting shell 12, which is used to prevent liquid leakage between the second connecting shell 12 and the first connecting shell 11. The second connecting shell 12 is provided with two connecting holes 1201, and a sliding rod 20 is slidably connected in the connecting hole 1201. The sliding rod 20 is used to push the clip 19 to move, so that the clip 19 releases the lock on the second connecting shell 12 and the first connecting shell 11.

[0046] Please refer to Figure 4 and Figure 5 Sliding member 17 is fixedly connected to a blocking ring 21, which is used to block connecting hole 1201. When blocking ring 21 releases its blockage of connecting hole 1201, water within second communicating housing 12 enters connecting hole 1201, pushing sliding rod 20 to move. The height of blocking ring 21 below connecting hole 1201 is greater than that of stopper 15, so that after sliding member 17 and stopper 15 separate, blocking ring 21 can release its blockage of connecting hole 1201.

[0047] Before burying the device in the pile hole, the first connecting shell 11 and the second connecting shell 12 are clamped together by two clips 19. When the sliding member 17 moves to separate from the block 15, the sliding member 17 continues to drive the sealing ring 21 to move upward, so that the sealing ring 21 releases the blockage of the connecting hole 1201. Then, high-pressure water enters the connecting hole 1201 and pushes the sliding rod 20 to move. The sliding rod 20 pushes the clip 19 to move, so that the clip 19 rotates, thereby releasing the lock on the first connecting shell 11 and the second connecting shell 12. Then, the water supply device is closed and the pipeline is recovered, thereby reducing costs.

[0048] Example 3

[0049] Based on Example 2, please refer to Figure 1-Figure 3 The thickness of the edge of the first pressure plate 4 and the thickness of the edge of the second pressure plate 5 are respectively smaller than the thickness of the middle part of the two, so that the first pressure plate 4 and the second pressure plate 5 are easier to insert into the soil.

[0050] Example 4

[0051] Based on Example 3, a construction method for reinforcing piles in soft soil roadbed sites is as follows: Figure 1-Figure 5 Based on the above-mentioned reinforcement pile for soft soil roadbed site, the method specifically includes the following steps:

[0052] S1: Level the site, then drill two pile-burying holes with different diameters, then connect the second connecting shell 12 to the water supply device, and clamp the first connecting shell 11 and the second connecting shell 12 together using the buckle 19, and then move the bent plate 8 downward along the inner wall of the pile-burying hole;

[0053] S2: When the bent plate 8 moves to the lower part of the pile hole, the first pressure plate 4 drives the bent plate 8 to move to the inner wall of the lower part of the pile hole, and then continues to move downward until the bent plate 8 contacts the bottom of the pile hole. At this time, pressure is continued to be applied to the upper steel ring 2, so that the first pressure plate 4 and the second pressure plate 5 are inserted into the soil at the bottom of the pile hole until the lower steel ring 2 contacts the bottom of the pile hole;

[0054] S3: Start the water supply device. High-pressure water enters the first connecting shell 11 through the second connecting shell 12 and then enters the three rotating shells 9. Then, the rotating rod 10 is pushed to move out of the rotating shell 9. At this time, the first pressure plate 4 and the corresponding second pressure plate 5 rotate in opposite directions, thereby pressing the nearby soil.

[0055] S4: As the water pressure in the second connecting shell 12 increases, the water in the second connecting shell 12 pushes the sliding member 17 upward, and the sliding member 17 compresses the second spring 18 and the air in the fixed shell 16. When the soil below the second pressure plate 5 and the soil above the first pressure plate 4 are compacted, the sliding member 17 moves to separate from the stopper 15. After the stopper 15 loses its obstruction, the gate plate 13 moves under the action of the first spring 14 and blocks the first connecting shell 11.

[0056] S5: After the sliding member 17 moves to separate from the stopper 15, the sliding member 17 continues to drive the blocking ring 21 to move upward, so that the blocking ring 21 releases the blockage of the connecting hole 1201. Then, high-pressure water enters the connecting hole 1201 and pushes the sliding rod 20 to move. The sliding rod 20 pushes the buckle 19 to move, causing the buckle 19 to rotate, thereby releasing the lock of the first connecting shell 11 and the second connecting shell 12. Then, the water supply device is closed and the pipeline is recovered.

[0057] S6: Cement is injected into the concrete cylinder 3. The cement enters the gap between the first pressure plate 4 and the second pressure plate 5 through the injection hole 301, thereby further reinforcing the pile body. At this point, the construction of the device is completed.

[0058] So far, this embodiment has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the reinforcement piles and construction methods used in soft soil roadbed sites of the present invention. Of course, the specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforcement pile for soft soil roadbed, characterized in that: The invention comprises a steel cage (1), wherein the steel cage (1) is fixed with three steel rings (2) arranged in a straight line, the steel cage (1) is wrapped with a concrete cylinder (3), the three steel rings (2) are all bonded to the concrete cylinder (3), the middle steel ring (2) is hinged with a first pressure plate (4) distributed at equal intervals in the circumference, and the lower steel ring (2) is hinged with a second pressure plate (5) distributed at equal intervals in the circumference, all the first pressure plates (4) and all the second pressure plates (5) correspond to each other, and a first torsion spring (6) and a second torsion spring (7) are respectively provided between the first pressure plate (4) and the second pressure plate (5) and the corresponding steel ring (2), and the first pressure plate (4) and the corresponding second pressure plate (5) are pressed against each other; A bent plate (8) is hingedly connected to the side of the first pressure plate (4) away from the concrete cylinder (3), and the lower side of the bent plate (8) is bent toward the side close to the concrete cylinder (3); The second pressure plate (5) is hinged with a rotating shell (9), and the first pressure plate (4) is hinged with a rotating rod (10). The rotating rod (10) and the corresponding rotating shell (9) are slidably connected. All the rotating shells (9) are connected to a first connecting shell (11) through a pipeline. The first connecting shell (11) is provided with a second connecting shell (12), and the two are connected. The second connecting shell (12) is connected to a water supply device. The concrete cylinder (3) is provided with circumferentially evenly spaced pouring holes (301). The pouring holes (301) are located between the corresponding first pressure plate (4) and the corresponding second pressure plate (5).

2. The reinforcement pile for soft soil roadbed according to claim 1, characterized in that: The first connecting shell (11) is slidably connected to a gate plate (13), and a first spring (14) is provided between the two. The gate plate (13) is fixedly connected to a stopper (15). The second connecting shell (12) is fixedly connected to a fixed shell (16), and a sliding member (17) is slidably connected to the fixed shell (16). A second spring (18) is provided between the two. The sliding member (17) and the stopper (15) press each other.

3. The reinforcement pile for soft soil roadbed according to claim 2, characterized in that: The second connecting shell (12) is hinged with a buckle (19), and the second connecting shell (12) is provided with a connecting hole (1201). A sliding rod (20) is slidably connected in the connecting hole (1201), and the sliding rod (20) is used to push the buckle (19) to move.

4. The reinforcement pile for soft soil roadbed according to claim 3, characterized in that: The sliding member (17) is fixedly connected to a blocking ring (21), and the blocking ring (21) is used to block the connecting hole (1201).

5. The reinforcement pile for soft soil roadbed according to claim 4, characterized in that: The thickness of the edge of the first pressure plate (4) and the thickness of the edge of the second pressure plate (5) are respectively smaller than the thickness of the middle portions of the two.

6. The reinforcement pile for soft soil roadbed according to claim 5, characterized in that: The mass of the lower part of the bent plate (8) at the hinged connection with the first pressure plate (4) is greater than the mass of the upper part.

7. The reinforcement pile for soft soil roadbed according to claim 6, characterized in that: The height of the sealing ring (21) located at the lower side of the connecting hole (1201) is greater than the height of the stopper (15).

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