Foundation treatment device for improving strength of soft ground

Abstract

The application relates to the field of building construction, in particular to a foundation treatment device for improving the strength of a soft soil foundation, which comprises two extrusion drainage plates arranged in parallel and a telescopic connecting piece arranged between the two extrusion drainage plates, the two extrusion drainage plates are connected through the telescopic connecting piece, a plurality of drainage holes are arranged on the extrusion drainage plate, the extrusion drainage pipe and the telescopic connecting piece are used for being inserted into the soft soil foundation, a pushing assembly is arranged between the two extrusion drainage plates, and the pushing assembly pushes the two extrusion drainage plates to move in a direction away from each other. The application has the effect of improving the drainage period of the soft soil foundation.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to a foundation treatment device for improving the strength of soft soil foundations. Background Technology

[0002] Before construction begins, if the foundation at the construction site is soft soil, it is necessary to reinforce the soft soil foundation to increase its strength and ensure that the building constructed on the soft soil foundation will not suffer from settlement, collapse or other hazards.

[0003] There are various existing methods for reinforcing soft soil foundations, such as sand and gravel replacement, cement mixing reinforcement, surcharge preloading, and vacuum preloading drainage. In vacuum preloading drainage, a sand cushion layer is first laid on the soft foundation, and then a drainage pipe is installed vertically. A sealing membrane is used to isolate the soil. Then, a vacuum is drawn to create a vacuum under the sealing membrane. Under atmospheric pressure, water in the soft soil foundation seeps into the drainage pipe and is then drained out through the drainage pipe. This reduces the moisture in the soft soil foundation, increases the effective stress of the foundation, consolidates the soil, and improves the strength of the soft soil foundation.

[0004] In the aforementioned technologies, when the strength of the soft soil foundation needs to meet the specified requirements, relying solely on negative pressure drainage formed by atmospheric pressure will result in a longer drainage cycle and affect the entire construction period. Summary of the Invention

[0005] In order to improve the drainage cycle of soft soil foundations, this application provides a foundation treatment device for enhancing the strength of soft soil foundations.

[0006] The foundation treatment device for improving the strength of soft soil foundations provided in this application adopts the following technical solution:

[0007] A foundation treatment device for improving the strength of soft soil foundation includes two parallel squeeze drainage boards and a telescopic connector disposed between the two squeeze drainage boards. The two squeeze drainage boards are connected by the telescopic connector. The squeeze drainage boards have multiple drainage holes. The squeeze drainage pipe and the telescopic connector are used to insert into the soft soil foundation. A pushing component is disposed between the two squeeze drainage boards. The pushing component pushes the two squeeze drainage boards to move away from each other.

[0008] By adopting the above technical solution, when strengthening soft soil foundations, a placement trench is first opened on the soft soil foundation. Two extrusion drainage pipes and telescopic connectors are inserted into the placement trench of the soft soil foundation. Then, the two extrusion drainage boards are pushed away from each other by a pushing component. During the movement of the two extrusion drainage boards, the telescopic connectors lengthen. At this time, the two extrusion drainage boards squeeze the soil in the soft soil foundation. Under the action of extrusion force, the water in the soft soil foundation enters between the two extrusion drainage boards and is drained by a drainage pump. After the drainage is completed, concrete can be poured in the space formed between the two extrusion drainage boards. This can improve the drainage speed of the soft soil foundation on the one hand, and further improve the strength of the soft soil foundation on the other hand due to the pouring of concrete.

[0009] Optionally, the pushing assembly includes a support plate for abutting against the surface of the soft soil foundation, a rotating shaft rotatably connected to the support plate, and a pushing plate fixed on the rotating shaft. The two sides of the pushing plate are used to abut against the surfaces of the two squeezed drainage boards, and the rotation of the rotating shaft drives the pushing plate to push the two squeezed drainage boards away from each other.

[0010] By adopting the above technical solution, when the squeeze drainage board is fully inserted into the soft soil foundation, the support plate abuts against the upper surface of the soft soil foundation. At this time, the drive shaft rotates, and the drive shaft drives the push plate to rotate. The push plate pushes the two squeeze drainage boards away from each other. During the movement of the squeeze drainage boards, water will also enter between the two squeeze drainage boards. When the push plate and the squeeze drainage board are set perpendicularly, the movement of the two squeeze drainage boards is completed. Under the action of the push plate and the drive shaft, it is more convenient to drive the squeeze drainage board to move.

[0011] Optionally, both ends of the telescopic connector are provided with support rods, and the support rods are provided with limit strips. A positioning plate is rotatably connected to the squeeze drainage plate. The positioning plate is used to abut against the side of the limit strip near the push plate. The limit strip is provided with a fixing member for fixing the positioning plate on the limit strip. The squeeze drainage plate is provided with a driving member for pushing the positioning plate away from the limit strip.

[0012] By adopting the above technical solution, the squeeze drainage board is fixed to the limiting strip by the positioning plate and the fixing component. When the pushing plate moves the squeeze drainage board, it drives the positioning plate to move. The positioning plate pushes the limiting strip and the support rod to move, thereby squeezing the soft soil foundation. The support rod and the squeeze drainage board move simultaneously. After the squeeze drainage board has moved, the driving component drives the positioning plate to rotate, so that the positioning plate is separated from the limiting strip. The end of the positioning plate away from the limiting strip rotates out of the squeeze drainage board and inserts into the soil, which can fix the squeeze drainage board. At this time, the support rod and the squeeze drainage board are separated. The support rod, the telescopic connector and the pushing component are removed, so that the squeeze drainage board is left in the soft soil to support the soft soil foundation, reduce the collapse of the squeezed space, and facilitate the pouring of concrete in the squeezed space.

[0013] Optionally, the fixing element is configured as a fixing magnet, which is adhered to the limiting strip and the fixing magnet adsorbs and fixes the positioning plate to the limiting strip; the attraction force of the fixing magnet is greater than the force of the soil pushing the positioning plate.

[0014] By adopting the above technical solution, during the movement of the squeeze drainage board, the soil will push the positioning plate to rotate. By setting a fixed magnet, and the attraction of the fixed magnet is greater than the force of the soil pushing the positioning plate, the soil will not push the positioning plate to rotate when the squeeze drainage board moves, thus making it more stable during use.

[0015] Optionally, the driving component is configured as a driving plate slidably connected to the squeeze drainage plate, the driving plate abutting against the end of the positioning plate away from the limiting strip, and used to drive the positioning plate to rotate on the squeeze drainage plate, so that the positioning plate is disengaged from the fixed magnet.

[0016] By adopting the above technical solution, after the squeezing drainage board has moved, the drive plate is pushed and the pushing force is greater than the attraction force of the fixed magnet. At this time, the positioning plate is disengaged from the limiting strip, and the end of the positioning plate away from the limiting strip extends out of the squeezing drainage board and enters the soil.

[0017] Optionally, the drive plate is provided with a pushing surface on the side near the push plate for abutting against the push plate, and the pushing surface gradually tilts away from the push assembly along the direction away from the limiting strip.

[0018] By adopting the above technical solution, as the rotating shaft drives the push plate to rotate, the push plate first comes into contact with the lowest point of the push surface during the rotation process, and then gradually pushes the drive plate to move away from the push plate, thereby achieving the purpose of facilitating the movement of the drive plate.

[0019] Optionally, a reinforcing plate is slidably connected to the positioning plate, the reinforcing plate slides along the axis of the rotation shaft, and a second pushing component is provided on the drive plate for driving the reinforcing plate to extend out of the positioning plate.

[0020] By adopting the above technical solution, when the positioning plate rotates out of the squeezing drainage board and is inserted into the soil, the second pushing component pushes the reinforcing plate to move, so that the reinforcing plate moves along the axis of rotation, thereby further fixing the position of the squeezing drainage board and the positioning plate, thereby improving the stability of the squeezing drainage board in the soil.

[0021] Optionally, the second pushing component includes a driving rod slidably connected to the driving plate and a second driving rod slidably connected to the driving plate. The driving rod abuts against the reinforcing plate and pushes the reinforcing plate to move on the positioning plate. The second driving rod is used to push the driving rod to move on the driving plate.

[0022] By adopting the above technical solution, when the reinforcement plate needs to be inserted into the soil, the second drive rod moves and pushes the drive rod to slide on the reinforcement plate, so that the drive rod moves and pushes the reinforcement plate to move, thus making it more convenient to drive the reinforcement plate to move.

[0023] Optionally, a plug plate is slidably connected to the push plate, the plug plate slides along the axis of the rotation shaft, and the plug plate is used to push the second drive rod to move.

[0024] By adopting the above technical solution, when the second drive rod needs to move, the plug plate is pushed, and the plug plate pushes the second drive rod to move, which makes it more convenient to drive the second drive rod to move.

[0025] Optionally, a return spring is provided on the push plate. One end of the return spring is fixed to the push plate, and the other end is fixed to the second drive rod. The return spring is used to pull the second drive rod to move closer to the rotation axis.

[0026] By adopting the above technical solution, when the plug-in plate pushes the second drive rod to move, the reset spring is stretched. When the reinforcing plate extends out of the positioning plate, the plug-in plate moves in the opposite direction, and the plug-in plate and the second drive rod are separated. At this time, under the action of the reset spring, it is easy to pull the second drive rod into the push plate, thereby making it easy to remove the push plate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a partial cross-sectional view of an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the connection of the second driving component in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the connection between the push component and the plug-in board in an embodiment of this application.

[0031] Reference numerals: 1. Extrusion drainage plate; 11. Drainage hole; 13. Limiting strip; 14. Support rod; 15. Mounting groove; 2. Telescopic connector; 21. Telescopic plate; 211. First connecting part; 212. Second connecting part; 3. Pushing assembly; 31. Support plate; 32. Rotating shaft; 33. Pushing plate; 4. Mounting shaft; 41. Positioning plate; 42. Pushing surface; 43. Reinforcing plate; 44. Guide surface; 5. Fixing component; 51. Fixing magnet; 6. Driving component; 61. Driving plate; 7. Second pushing assembly; 71. Driving rod; 72. Second driving rod; 8. Insertion groove; 81. Insertion plate; 82. Connecting plate; 83. Second guide surface; 9. Return spring; 91. Pull rod. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a foundation treatment device for improving the strength of soft soil foundations. (Refer to...) Figure 1 and Figure 2 A foundation treatment device for improving the strength of soft soil foundations includes two squeeze drainage boards 1 and a telescopic connector 2. The two squeeze drainage boards 1 are arranged in parallel and spaced apart. Each squeeze drainage board 1 has a drainage hole 11. The telescopic connector 2 connects the two squeeze drainage boards 1. A pushing component 3 is arranged between the two squeeze drainage boards 1. In use, a placement trench is dug in the soft soil foundation, and the telescopic connector 2 and the two squeeze drainage boards 1 are inserted into the foundation soil, making the squeeze drainage boards 1 vertical. The pushing component 3 pushes the two squeeze drainage boards 1 to move in opposite directions, squeezing the soft soil foundation soil and accelerating water drainage. In addition, when the soft soil foundation area is large, different numbers of squeeze drainage boards 1 can be installed as needed. In other embodiments, it is not necessary to open a placement trench; the telescopic connector 2 and the two squeeze drainage boards 1 are directly inserted into the foundation soil.

[0034] Reference Figure 1 and Figure 2 The telescopic connector 2 is configured as a telescopic plate 21, which includes a first connecting part 211 and a second connecting part 212. The first connecting part 211 is sleeved on the second connecting part 212, and the first connecting part 211 and the second connecting part 212 are slidably connected. At the same time, a support rod 14 is fixedly installed on the side of the first connecting part 211 away from the second connecting part 212. The support rod 14 is arranged to press the drainage plate 1 along its length. A support rod 14 is also fixedly installed on the side of the second connecting part 212 away from the first connecting part 211. A limiting strip 13 is provided on the side of the support plate 31 away from the pushing component 3. Under the action of the limiting strip 13, the support rod 14 is made to have an L-shaped structure.

[0035] Reference Figure 1 and Figure 2 Meanwhile, an installation groove 15 is provided on the squeeze drainage plate 1, which penetrates the squeeze drainage plate. An installation shaft 4 is rotatably connected to the inner wall of the installation groove 15, and a positioning plate 41 is fixedly installed on the installation shaft 4. The positioning plate 41 is used to block the installation groove 15, and a drainage hole 11 is also provided on the positioning plate 41. A fixing member 5 is provided on the limiting strip 13, which is used to fix the positioning plate 41 on the limiting strip 13 and the support rod 14. During the movement of the squeeze drainage plate 1, the positioning plate 41 is in the installation groove 15. At this time, the positioning plate 41 extends from the side of the squeeze drainage plate 1 and is fixed to the limiting strip 13 by the fixing member 5. Then, when the two squeeze drainage plates 1 move away from each other, the squeeze drainage plate 1 drives the positioning plate 41 to push the limiting strip 13 and the support rod 14 to move. In this embodiment, the fixing member 5 is set as a fixing magnet 51, which is adhered to the support rod 14 and is used to attract the positioning plate 41 and fix the positioning plate 41 and the squeeze drainage plate 1.

[0036] Reference Figure 1 and Figure 2 The pushing component 3 includes a support plate 31, a rotating shaft 32, and a pushing plate 33. The rotating shaft 32 is rotatably connected to the support plate 31. When the two squeezing drainage plates 1 are fully inserted into the soil, the support plate 31 is horizontally positioned and abuts against the soft soil foundation surface. The pushing plate 33 is welded to the rotating shaft 32, which is located in the middle of the pushing plate 33, dividing the pushing plate 33 into two parts for pushing the two squeezing drainage plates 1 to move simultaneously in opposite directions. During the movement, the two squeezing drainage plates 1 form a water storage space. In the initial state, the pushing plate 33 and the squeezing drainage plates 1 are arranged in parallel, driving the rotating shaft 32 to rotate. The rotating shaft 32 drives the pushing plate 33 to rotate. After the pushing plate 33 rotates 90 degrees around the rotating shaft 32, the pushing plate 33 and the squeezing drainage plates 1 are arranged perpendicularly. At this time, the distance between the two squeezing drainage plates 1 is the largest, and the first connecting part 211 and the second connecting part 212 are fully extended.

[0037] Reference Figure 1 and Figure 2 As the extrusion drainage board 1 moves, it compresses the soil within the soft soil foundation, causing the moisture in the soil to flow into the water storage space formed by the two extrusion drainage boards 1. At this point, the water can be pumped out using a drainage pump, thereby accelerating the drainage of moisture from the soft soil foundation and improving its strength. When the first connecting part 211 and the second connecting part 212 are fully extended, the two extrusion drainage boards 1 can no longer move, and the area of ​​the water storage space formed at this time is also at its maximum. After the water in the water storage space is pumped out, concrete is poured into the water storage space to further enhance the strength of the soft soil foundation.

[0038] Reference Figure 1 and Figure 2A driving component 6 is provided on the squeeze drainage plate 1. The driving component 6 is used to drive the positioning plate 41 to rotate around the mounting shaft 4, so that the positioning plate 41 is disengaged from the limiting strip 13. At this time, the positioning plate 41 rotates out from the mounting groove 15 and enters the soil of the soft soil foundation to fix the squeeze drainage plate 1. The fixed squeeze drainage plate 1 can support the inner wall of the water storage space, reducing the possibility of the water storage space collapsing when the support plate 31, the telescopic connector 2 and the pushing component 3 are removed.

[0039] Reference Figure 1 and Figure 2 The driving component 6 is configured as a driving plate 61, which is slidably connected to the extrusion pushing plate 33 in a direction away from or near the pushing component 3. The driving plate 61 and the positioning plate 41 abut against each other, and when the driving plate 61 moves, it pushes the positioning plate 41 to rotate. The force pushing the driving plate 61 to move is greater than the attraction force of the fixed magnet 51 on the positioning plate 41. Since the positioning plate 41 and the extrusion drainage plate 1 are fixed to the limiting strip 13 by the fixing component 5, when the two extrusion drainage plates 1 move, the soil will push the mounting shaft 4 and the limiting strip through the mounting groove 15. The positioning plate 41 between the 13 rotates away from the limiting strip 13. At this time, the attraction force of the fixing magnet 51 is greater than the force of the soil pushing the positioning plate 41 to rotate. The positioning plate 41 is still fixed on the limiting strip 13. In addition, the soil will also push the positioning plate 41 between the mounting shaft 4 and the drive plate 61 to move closer to the pushing component 3 through the mounting groove 15. At this time, since the positioning plate 41 abuts against the limiting strip 13, the thrust of the positioning plate 41 against the limiting strip 13 will be greater, and the fixing effect of the positioning plate 41 and the squeezing drainage plate 1 will be better.

[0040] Reference Figure 1 and Figure 2 To facilitate the sliding of the drive plate 61 on the squeeze drainage plate 1, the drive plate 61 extends out of the squeeze drainage plate 1 near the push plate 33. A push surface 42 is provided on the drive plate 61 near the push assembly 3. Under the action of the push surface 42, the horizontal cross-section of the drive plate 61 forms a right-angled trapezoid, and the push surface 42 gradually tilts away from the push assembly 3 along the direction away from the limiting strip 13. Thus, when the push plate 33 rotates, it can abut against the push surface 42, thereby pushing the drive plate 61 to move on the squeeze drainage plate 1. During the operation, the positioning plate 41 is pushed to rotate, so that one end of the positioning plate 41 is detached from the fixed magnet 51, and the other end rotates out of the mounting groove 15 and is inserted into the soil. In this embodiment, one telescopic connector 2 is provided. Under the action of the two squeezing drainage plates 1, the entire structure is made into a U-shape. At this time, one positioning plate 41 is provided on the squeezing drainage plate 1. In other embodiments, two telescopic connectors 2 can be provided, which together with the two squeezing drainage plates 1 form a U-shape. At this time, two positioning plates 41, two driving plates 61 and two pushing components 3 are provided on each squeezing drainage plate 1.

[0041] Reference Figure 2 and Figure 3 A reinforcing plate 43 is slidably connected to the positioning plate 41. The reinforcing plate 43 slides along the length direction of the axis of rotation 32, and when the positioning plate 41 abuts against the limiting strip 13, the reinforcing plate 43 is completely within the positioning plate 41. A second pushing assembly 7 is provided on the pushing plate 33. The second pushing assembly 7 is used to push the reinforcing plate 43 out of the positioning plate 41 and insert it into the soil. The second pushing assembly 7 includes a driving rod 71 and a second driving rod 72. The driving rod 71 is slidably connected to the driving plate 61 in a direction perpendicular to the axis of rotation 32, and the second driving rod 72 is slidably connected to the pushing plate 33 in the sliding direction of the driving plate 61. The second drive rod 72 moves in the same direction. In this embodiment, two reinforcing plates 43 are provided on each positioning plate 41. The two reinforcing plates 43 move onto the positioning plate 41 in opposite directions. At the same time, the drive rod 71 is located between the two reinforcing plates 43. A guide surface 44 is provided on the drive rod 71. The guide surface 44 gradually tilts away from the other reinforcing plate 43 from the direction close to the pushing component 3, and the reinforcing plate 43 abuts against the guide surface 44. When the drive rod 71 moves, under the action of the guide surface 44, it pushes the reinforcing plate 43 out of the positioning plate 41, fixing the position of the positioning plate 41 and improving the fixing strength of the positioning plate 41 in the soil. In addition, the second drive rod 72 abuts against the drive rod 71. When the pushing plate 33 rotates 90 degrees, the pushing plate 33 and the squeezing drainage plate 1 are set perpendicularly. At this time, the second drive rod 72 is pushed, and the second drive rod 72 drives the drive rod 71 to move, which makes it more convenient to drive the drive rod 71 to move.

[0042] Reference Figure 3 and Figure 4 A insertion slot 8 is formed on the push plate 33, and an insertion plate 81 is slidably connected in the insertion slot 8. The insertion plate 81 slides in the insertion slot 8 along the rotation axis 32. In this embodiment, two insertion slots 8 are provided, and two insertion plates 81 are also provided. A connecting plate 82 is provided between the two insertion plates 81, and the two insertion plates 81 are fixed by the connecting plate 82. A second guide surface 83 is provided on the insertion plate 81. The second drive rod 72 is horizontally arranged, extends into the insertion slot 8, and abuts against the second guide surface 83. 3. Push the plug plate 81 to move, and under the action of the second guide surface 83, push the second drive rod 72 to move. Since there are two plug plates 81, the two second drive rods 72 are driven to move at the same time, so that the reinforcing plates 43 on the two squeeze drainage plates 1 are inserted into the soil, thereby achieving the purpose of moving the second drive rod 72. In addition, in order to facilitate the movement of the connecting plate 82, a pull rod 91 is welded on the connecting plate 82. The pull rod 91 passes through the support plate 31 and slides along the axis of the rotation shaft 32.

[0043] Reference Figure 3 and Figure 4 A return spring 9 is installed in the insertion slot 8. One end of the return spring 9 is fixed to the push plate 33, and the other end is fixed to the second drive rod 72. When the insertion plate 81 pushes the second drive rod 72 to move, the return spring 9 is in a stretched state. At this time, the second drive rod 72 extends out of the push plate 33, which can fix the position of the push plate 33 and push the drive rod 71 to move. When it is necessary to remove the telescopic connector 2 and the push assembly 3, the insertion plate 81 is pulled in the opposite direction, and the second guide surface 83 no longer abuts against the second drive rod 72. At this time, the return spring 9 is released. Spring 9 pulls the second drive rod 72 to move in the opposite direction, so that the second drive rod 72 moves into the push plate 33, which facilitates the drive shaft 32 to drive the push plate 33 to rotate, so that the push plate 33 rotates to a state parallel to the squeeze drainage plate 1. At this time, since one end of the positioning plate 41 is disengaged from the limiting strip 13 and the other end extends out of the mounting groove 15, the reverse telescopic connector 2 is extended, so that the first connecting part 211 and the second connecting part 212 are close to each other, which facilitates the removal of the push assembly 3 and the telescopic connector 2 from the water storage space, so that the squeeze drainage plate 1 supports the inner wall of the water storage space.

[0044] The implementation principle of a foundation treatment device for improving the strength of soft soil foundation according to an embodiment of this application is as follows: When reinforcing the soft soil foundation, firstly, two extrusion drainage boards 1 in a telescopic state and the telescopic connector 2 are inserted into the placement groove. After full insertion, the pushing component 3 is positioned between the two extrusion drainage boards 1, while the support plate 31 abuts against the surface of the soft soil foundation. The rotating shaft 32 is driven to rotate, and the rotating shaft 32 drives the pushing plate 33 to rotate, causing the two extrusion drainage boards 1 to move away from each other. When the extrusion drainage boards 1 are moved, the soil in the soft soil foundation can be squeezed, allowing the water in the soil to enter between the two extrusion drainage boards 1. Water is pumped out by a drainage pump. When the hardness of the squeezed soil meets the requirements, the pushing component 3 and the telescopic connector 2 are removed. Concrete is poured in the formed water storage space, and the extrusion drainage boards 1 are pre-embedded in the concrete, thereby improving the strength of the soft soil foundation.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foundation treatment device for improving the strength of soft soil foundations, characterized in that: It includes two parallel squeeze drainage boards (1) and a telescopic connector (2) between the two squeeze drainage boards (1). The two squeeze drainage boards (1) are connected by the telescopic connector (2). The squeeze drainage boards (1) have multiple drainage holes (11). The squeeze drainage boards (1) and the telescopic connector (2) are used to insert into the soft soil foundation. A pushing component (3) is provided between the two squeeze drainage boards (1). The pushing component (3) pushes the two squeeze drainage boards (1) to move in the soil in a direction away from each other. The pushing assembly (3) includes a support plate (31) for abutting against the surface of the soft soil foundation, a rotating shaft (32) rotatably connected to the support plate (31), and a pushing plate (33) fixed to the rotating shaft (32). The two sides of the pushing plate (33) are used to abut against the surfaces of the two squeezed drainage boards (1), and the rotating shaft (32) rotates to drive the pushing plate (33) to push the two squeezed drainage boards (1) away from each other. Both ends of the telescopic connector (2) are provided with support rods (14), and the support rods (14) are provided with limit strips (13). The squeezing drainage plate (1) is rotatably connected with a positioning plate (41). The positioning plate (41) is used to abut against the side of the limit strip (13) near the push plate (33). The limit strip (13) is provided with a fixing member (5) for fixing the positioning plate (41) on the limit strip (13). The squeezing drainage plate (1) is provided with a driving member (6) for pushing the positioning plate (41) away from the limit strip (13). The fixing element (5) is set as a fixing magnet (51), which is bonded to the limiting strip (13) and the fixing magnet (51) adsorbs the positioning plate (41) and fixes it to the limiting strip (13); the attraction force of the fixing magnet (51) is greater than the force of the soil pushing the positioning plate (41) to rotate.

2. The foundation treatment device for improving the strength of soft soil foundation according to claim 1, characterized in that: The driving component (6) is configured as a driving plate (61) slidably connected to the squeeze drainage plate (1). The driving plate (61) abuts against the end of the positioning plate (41) away from the limiting strip (13) and is used to drive the positioning plate (41) to rotate on the squeeze drainage plate (1) so that the positioning plate (41) is disengaged from the fixed magnet (51).

3. A foundation treatment device for improving the strength of soft soil foundations according to claim 2, characterized in that: The drive plate (61) is provided with a push surface (42) on the side near the push plate (33) for abutting against the push plate (33). The push surface (42) gradually tilts away from the push assembly (3) in the direction away from the limit bar (13).

4. A foundation treatment device for improving the strength of soft soil foundations according to claim 3, characterized in that: A reinforcing plate (43) is slidably connected to the positioning plate (41). The reinforcing plate (43) slides along the axis of the rotating shaft (32). A second pushing component (7) is provided on the driving plate (61) for driving the reinforcing plate (43) to extend out of the positioning plate (41).

5. A foundation treatment device for improving the strength of soft soil foundations according to claim 4, characterized in that: The second pushing assembly (7) includes a driving rod (71) slidably connected to the driving plate (61) and a second driving rod (72) slidably connected to the driving plate (33). The driving rod (71) abuts against the reinforcing plate (43) and pushes the reinforcing plate (43) to move on the positioning plate (41). The second driving rod (72) is used to push the driving rod (71) to move on the driving plate (61).

6. A foundation treatment device for improving the strength of soft soil foundations according to claim 5, characterized in that: A plug plate (81) is slidably connected to the push plate (33). The plug plate (81) slides along the axial length of the rotation shaft (32). The plug plate (81) is used to push the second drive rod (72) to move.

7. A foundation treatment device for improving the strength of soft soil foundations according to claim 6, characterized in that: A reset spring (9) is provided on the push plate (33). One end of the reset spring (9) is fixed on the push plate (33), and the other end is fixed on the second drive rod (72). The reset spring (9) is used to pull the second drive rod (72) to move closer to the rotating shaft (32).

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