A soft soil foundation solidification treatment device and method

Abstract

The present application relates to a soft soil foundation solidification treatment device and method, belonging to the technical field of foundation solidification, which comprises a casing, wherein the casing comprises an inner tube and an outer cylinder, the inner tube is located inside the outer cylinder and a plurality of reinforcement strips are fixed between the inner tube and the outer cylinder, the reinforcement strips are arranged along the length direction of the casing, adjacent reinforcement strips are arranged at intervals along the circumferential outer wall of the inner tube, the bottom of the inner tube is fixedly connected to the inner wall of the bottom of the outer cylinder; a filter screen is placed between the inner cylinder and the outer cylinder; a water-permeable hole penetrating the inner tube and the outer cylinder is opened on the casing; and a recovery device for recovering the filter screen is also included. The present application has the effect of ensuring the pile quality of concrete piles and ensuring the quality of reinforcement of soft soil foundations.

Description

Technical Field

[0001] The present application relates to the technical field of foundation solidification, and in particular to a soft soil foundation solidification treatment device and method. Background Art

[0002] In foundation treatment projects, drainage consolidation method and pile driver method are two commonly used technical means. The drainage consolidation method accelerates the consolidation of the foundation soil through the drainage system and improves the bearing capacity of the foundation; while the pile driver method increases the stability of the foundation by driving piles in the foundation.

[0003] However, both methods have certain limitations during use. After the drainage is completed, the surrounding soil is not effectively reinforced in the single drainage consolidation method, and it is easy to contain a large amount of moisture again due to water transfer, which reduces the curing effect and has a short curing cycle. The single pile driver method is easy to cause the pile to deviate and loosen in the case of soft soil flow.

[0004] In actual construction, the drainage consolidation method is often used to drill a seepage well on the foundation, and the pore water penetrates into the seepage well. The pore water in the seepage well is then pumped out by a water pump to complete consolidation and drainage. If the consolidation and drainage method is combined with the pile driver method to reinforce the foundation, it is necessary to inject concrete into the seepage well after the drainage is completed to form concrete piles. However, in actual operation, there is not only infiltrated pore water in the seepage well, but also infiltrated mud and sand. The presence of mud and sand will cause the quality of the concrete piles to be reduced during the subsequent pouring of concrete piles. Summary of the invention

[0005] In order to ensure the quality of concrete piles and to ensure the reinforcement of soft soil foundations, the present application provides a soft soil foundation solidification treatment device and method.

[0006] In the first aspect, the present application provides a soft soil foundation solidification treatment device, which adopts the following technical solution:

[0007] A soft soil foundation solidification treatment device comprises a sleeve, wherein the sleeve comprises an inner tube and an outer cylinder, the inner tube is located inside the outer cylinder and a plurality of reinforcement strips are fixed between the inner tube and the outer cylinder, the reinforcement strips are arranged along the length direction of the sleeve, adjacent reinforcement strips are arranged at intervals along the circumferential outer wall of the inner tube, the bottom of the inner tube is fixedly connected to the inner wall of the bottom of the outer cylinder; a filter screen is placed between the inner cylinder and the outer cylinder; a water-permeable hole penetrating the inner tube and the outer cylinder is opened on the sleeve; and a recovery device for recovering the filter screen is also included.

[0008] By adopting the above technical scheme, the casing acts as a seepage well, and pore water enters the interior of the casing through the casing. The pore water accumulated in the casing is pumped out by a water pump, thereby completing the drainage and consolidation of the foundation. The setting of the inner tube and the outer tube provides space for the placement of the filter screen. The filter screen protects the water permeable holes and prevents the clogging of the water permeable holes. At the same time, it filters the pore water that penetrates into the casing, reduces the accumulation of sediment in the casing, and ensures the quality of the concrete piles subsequently cast in the casing. The filter screen can be recycled through the recovery device to reduce resource waste. At the same time, removing the filter screen reduces the obstruction of the water permeable holes at this time, making it easier to pour concrete into the casing. Part of the concrete penetrates into the surrounding soil through the water permeable holes, further strengthening the soil.

[0009] Optionally, the recovery device includes a positioning plate, a motor, a gear, a rack and a positioning rod. The positioning plate is inserted and fixed on the foundation next to the sleeve. The motor is slidably set on the positioning plate, and the sliding direction slides in the vertical direction. The rack is fixed on the positioning plate in the vertical direction. The gear ring is fixed on the output shaft of the motor. The gear and the rack are meshed. The motor is used to drive the positioning rod to rotate. The positioning rod is slidably set on the positioning plate. The positioning rod slides in the direction close to or away from the filter net. The positioning rod is used to form a connection with the top edge of the filter net.

[0010] By adopting the above technical solution, the positioning plate is fixed on the foundation beside the sleeve, the top of the filter is fixed to the positioning rod by iron wire, and the motor is started. While the motor drives the positioning rod to rotate, it also starts to move upward through the engagement of the gear and the rack. The filter is wound and rolled onto the positioning rod. In order to avoid the filter rolled up on the positioning rod from colliding with the top surface of the foundation, the motor drives the positioning rod to move upward synchronously while the filter is rolled up.

[0011] Optionally, a positioning bar is fixed to the top of the filter screen, a cross hole is opened at the end face of the positioning bar, the cross hole is opened along the length direction of the positioning bar, the cross-section of the end face where the positioning rod and the positioning bar are inserted is cross-shaped, and the positioning rod is inserted in the cross hole; the positioning bar is mounted on the top of the reinforcement bar.

[0012] By adopting the above technical solution, the setting of the positioning strip prevents the filter from falling into the gap between adjacent reinforcement strips due to its own weight. At the same time, the cross hole also facilitates the insertion connection between the positioning rod and the positioning strip, thereby realizing the quick connection or disassembly of the positioning rod and the filter.

[0013] Optionally, an anti-slip strip is fixed to the bottom end of the filter screen, one end of the anti-slip strip is located at the place where the water hole passes through the outer tube, and the other end is located at the place where the water hole passes through the inner tube. The anti-slip strip is provided with a breaking groove for facilitating separation of the filter screen and the anti-slip strip, and the breaking groove is located on the side of the anti-slip strip away from the bottom end of the sleeve.

[0014] By adopting the above technical solution, in the process of inserting the casing into the foundation, in order to prevent the filter from being moved upward relative to the casing due to friction with the soil, an anti-slip strip is provided to limit the position of the filter. When the recovery device is started, the recovery device drives the filter to move upward, and the anti-slip strip is broken at the breaking groove, thereby not affecting the recovery device from rolling up the filter.

[0015] Optionally, a long hole is opened on the positioning plate in the vertical direction, a slider is slidably arranged in the long hole, the slider slides in the vertical direction, a positioning pin and a first spring are arranged on the slider, a positioning hole is opened on the positioning plate, the positioning pin is slidably arranged on the slider and the sliding direction is in the direction close to or away from the positioning hole, the first spring is used to push the positioning pin to move toward the positioning hole; when the end of the positioning pin is inserted into the positioning hole, the gear and the rack are disengaged; the motor is fixed on the slider.

[0016] By adopting the above technical solution, the slider provides a position for fixing the motor, and the setting of the positioning pin and the first spring limits the length of the rack, thereby reducing the floor space occupied by the rack. When the vertical height driven by the motor to lift the positioning rod is sufficient to accommodate the rolled filter screen, the motor does not need to continue to rise. At this time, since the rack has a limited length, the rack and the gear are disengaged. In order to avoid the phenomenon of tooth jumping due to repeated engagement with the rack after the gear falls, the first spring pushes the positioning pin to be inserted into the positioning hole, which limits the slider and avoids the phenomenon of tooth jumping.

[0017] Optionally, a second spring is provided on the positioning plate, and the second spring is vertically located in the elongated hole, the bottom end of the second spring is fixedly connected to the inner wall of the bottom end of the elongated hole, and the top end of the second spring is fixedly connected to the slider.

[0018] By adopting the above technical solution, the second spring provides power for the upward movement of the slider. After the limit pin is inserted into the positioning hole, the limit pin provides support for the slider and the motor on the slider, and the second spring also provides a part of the supporting force.

[0019] Optionally, a positioning box, a worm wheel and a worm are arranged between the motor and the positioning rod. The worm wheel and the worm are meshed with each other and are both located in the positioning box. The worm is rotatably arranged in the positioning box and rotates relative to the positioning box. The end tube of the output shaft of the motor passes through the interior of the positioning box and is fixedly connected to the end of the worm. The positioning rod passes through the positioning box and the center of the worm wheel. The positioning rod rotates synchronously with the worm wheel relative to the positioning box, and the positioning rod is slidably arranged relative to the positioning box and the worm wheel.

[0020] By adopting the above technical solution, the worm wheel and the worm are coordinated for positioning and realize the steering drive when the motor drives the positioning rod, which saves floor space and makes the equipment more streamlined. The positioning and protection of the worm and the worm wheel make it safer for operators to remove the rolled filter from the positioning rod.

[0021] Optionally, a telescopic rod is provided on the positioning box, one end of the telescopic rod is fixedly connected to the outer wall of the positioning box, and the other end is rotatably connected to a ball, the ball rolls against the positioning plate, and the positioning plate is provided with a circular hole for the telescopic rod to pass through, and the diameter of the circular hole is larger than the diameter of the ball.

[0022] By adopting the above technical solution, when the filter is rolled up onto the positioning rod, the slider bears the weight of the motor, the positioning rod and the filter on the positioning rod. At this time, the ball of the telescopic rod passes through the round hole, and the telescopic rod provides support for the positioning box, sharing the force of the slider.

[0023] Optionally, the positioning plate is ball-hinged with a sub-plate, a sub-rod is slidably provided on the sub-plate, the sub-rod slides in a vertical direction, the end of the sub-rod is inserted into a cross hole, and the sub-rod and the positioning rod are distributed at both ends of the same positioning strip.

[0024] By adopting the above technical solution, the existence of the auxiliary plate balances the force on the positioning rod, so that the rolled filter screen can be rolled up on the positioning rod and the auxiliary rod more stably at the same time.

[0025] In the second aspect, the present application provides a soft soil foundation solidification treatment method, which adopts the following technical solution:

[0026] A soft soil foundation solidification treatment method comprises the following steps:

[0027] S1. Along the edge of the demarcated range of the foundation of the building to be constructed, multiple casings are sequentially driven into the soft soil foundation at intervals, with adjacent casings spaced apart and the permeable holes all facing the direction of the adjacent casings, and a cushion layer is laid on the top surface of the soft soil foundation;

[0028] S2. Pump out the accumulated water in the casing by a water pump, and drive another casing into the foundation outside the edge of the demarcated range of the foundation of the building to be constructed. Only one casing is required to be set in one direction this time.

[0029] S3, draining the accumulated water inside the casing arranged along the edge of the foundation demarcation range of the building to be constructed, cleaning the inside of the casing, recycling the filter screen through a recycling device after the cleaning, and pouring concrete into the casing;

[0030] S4, high pressure concrete is sprayed through the permeable holes toward the direction close to the adjacent casing;

[0031] S5. The concrete pile is poured until it coincides with the cushion layer.

[0032] By adopting the above technical solution, the casing replaces the construction of the seepage well, and the casing is directly inserted into the foundation to save time. The filter screen filters the sediment and reduces the amount of sediment entering the casing. After the inside of the casing is cleaned, the quality of the concrete pile is guaranteed. After the recovery device recovers the filter screen, the concrete is sprayed toward the adjacent casing through the permeable holes, so that the adjacent casings are connected into pieces, thereby forming a "retaining wall" to reduce the infiltration of pore water in the foundation. At the same time, there is a casing as a spare seepage well in each direction outside the edge of the foundation delineation range. At this time, the pore water will flow to this spare seepage well, further ensuring the foundation solidification effect within the foundation delineation range.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. The casing acts as a seepage well. The pore water enters the casing through the casing. The accumulated pore water in the casing is pumped out by a water pump, thereby completing the drainage and consolidation of the foundation. The setting of the inner tube and the outer tube provides space for the placement of the filter. The filter protects the water-permeable holes and prevents the clogging of the water-permeable holes. At the same time, it filters the pore water that penetrates into the casing, reduces the accumulation of sediment in the casing, and ensures the quality of the concrete piles cast in the subsequent casing.

[0035] 2. The recovery device can realize the recycling of the filter screen and reduce the waste of resources. At the same time, removing the filter screen reduces the obstruction of the water permeable holes at this time, making it easier to pour concrete into the casing. Part of the concrete penetrates into the surrounding soil through the water permeable holes, further strengthening the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the casing;

[0037] Figure 2 It is a structural diagram of the filter;

[0038] Figure 3 It is a schematic diagram of the structure of the recovery device;

[0039] Figure 4 It is a partial structural cross-sectional view for showing the internal structure of the positioning box;

[0040] Figure 5 This is a partial structural cross-sectional view showing the location of the baffle.

[0041] Explanation of the accompanying drawings: 1. sleeve; 11. inner tube; 12. outer tube; 13. reinforcement strip; 14. water permeable hole; 2. filter screen; 21. positioning strip; 22. anti-drop strip; 23. fracture groove; 3. recovery device; 31. positioning plate; 311. long hole; 312. second spring; 313. round hole; 32. motor; 33. gear; 34. rack; 35. positioning rod; 351. baffle; 4. slider; 41. first spring; 42. positioning pin; 5. positioning box; 51. worm gear; 52. worm; 53. telescopic rod; 54. ball; 6. sub-plate; 61. sub-rod. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0043] The embodiment of the present application discloses a soft soil foundation solidification treatment device.

[0044] refer to Figure 1 and Figure 2 A soft soil foundation solidification treatment device includes a casing 1, which includes an inner tube 11 and an outer tube 12. The inner tube 11 is inserted into the outer tube 12. The bottom of the outer tube 12 is a pointed cone. The bottom end of the inner tube 11 is fixedly connected to the inner wall of the bottom of the outer tube 12, so that the bottom of the cavity between the inner tube 11 and the outer tube 12 forms a sealed state. A reinforcement strip 13 is fixed between the outer tube 12 and the inner tube 11. A plurality of reinforcement strips 13 are provided. The reinforcement strips 13 are arranged along the length direction of the casing 1. The bottom end of the reinforcement strip 13 is fixedly connected to the inner wall of the bottom of the outer tube 12. Adjacent reinforcement strips 13 are arranged at intervals along the circumference of the inner tube 11, so that the cavity between the inner tube 11 and the outer tube 12 is divided into a plurality of intervals. A water-permeable hole 14 is opened on the casing 1, and the water-permeable hole 14 passes through the inner tube 11 and the outer tube 12. A filter screen 2 is inserted between the inner tube 11 and the outer tube 12.

[0045] refer to Figure 1 The water-permeable holes 14 are arranged in two rows, and the water-permeable holes 14 in a single row are arranged at intervals along the length direction of the casing 1 , and the water-permeable holes 14 are all arranged in the direction of the adjacent casing 1 .

[0046] refer to Figure 1 and Figure 2, the filter screen 2 only exists in the cavity penetrated by the water-permeable hole 14. A positioning strip 21 is fixed on the top of the filter screen 2, and an anti-slipping strip 22 is fixed on the bottom of the filter screen 2. A cross hole is provided on the end surface of the positioning strip 21, and the cross hole is provided along the length direction of the positioning strip 21. A breaking groove 23 is provided on the anti-slipping strip 22, and the breaking groove 23 is shaped like a gap. The breaking groove 23 is located near the fixing place of the filter screen 2 and the anti-slipping strip 22, so as to facilitate the separation of the filter screen 2 and the anti-slipping strip 22. The separation mentioned here is that the anti-slipping strip 22 is broken into multiple sections. After the fixing at the bottom of the filter screen 2 is broken, the remaining anti-slipping strip 22 is not enough to form a limit with the water-permeable hole 14, so as to achieve the effect of not hindering the filter screen 2 from being drawn out and rolled up. The breaking groove 23 is located on the side of the anti-slipping strip 22 away from the bottom end of the sleeve 1. Before the anti-slipping strip 22 breaks, one end of the anti-slipping strip 22 is located at the place where the water-permeable hole 14 penetrates the outer cylinder 12, and the other end is located at the place where the water-permeable hole 14 penetrates the inner tube 11.

[0047] refer to Figure 3 and Figure 4 , a soft soil foundation solidification treatment device also includes a recovery device 3. The recovery device 3 recovers the filter 2. The recovery device 3 includes a positioning plate 31, a motor 32, a gear 33, a rack 34 and a positioning rod 35. The positioning plate 31 is L-shaped, and the positioning plate 31 is vertically arranged. A pointed cone is fixed on the bottom end face of the positioning plate 31, and the pointed cone facilitates the positioning plate 31 to be inserted and fixed on the foundation. The positioning plate 31 is provided with a long hole 311 and a positioning hole. The long hole 311 is opened in the vertical direction, and the positioning hole is opened in the horizontal direction. A slider 4 is provided on the positioning plate 31, and the slider 4 slides in the long hole 311 in the vertical direction. The motor 32 is fixed on the slider 4, and the output shaft of the motor 32 is arranged through the long hole 311.

[0048] refer to Figure 3 The slider 4 is provided with a first spring 41 and a positioning pin 42. The positioning pin 42 is slidably provided on the slider 4. One end of the first spring 41 is fixedly connected to the positioning pin 42, and the other end is fixedly connected to the slider 4. The positioning pin 42 slides in a direction close to or away from the positioning hole. The first spring 41 pushes the positioning pin 42 to slide in a direction close to the positioning hole. The positioning plate 31 is provided with a second spring 312. The second spring 312 is vertically placed in the long hole 311. The bottom end of the second spring 312 is fixedly connected to the inner wall of the bottom end of the long hole 311, and the top end of the second spring 312 is fixedly connected to the bottom surface of the slider 4.

[0049] refer to Figure 3 and Figure 4 The rack 34 is fixed on the positioning plate 31, and the rack 34 is arranged in the vertical direction. The gear 33 is fixed on the output shaft of the motor 32 in an annular sleeve, and the gear 33 is meshed with the rack 34. When the gear 33 is disengaged from the rack 34 at the top of the rack 34, the first spring 41 pushes the positioning pin 42 to be inserted into the positioning hole.

[0050] refer to Figure 4 and Figure 5 A positioning box 5 is provided between the motor 32 and the positioning plate 31. A worm wheel 51, a worm 52, a telescopic rod 53 and a ball 54 are provided on the positioning box 5. The worm wheel 51 and the worm 52 are both located in the positioning box 5 and are both rotatably arranged in the positioning box 5. The worm wheel 51 and the worm 52 rotate relative to the positioning box 5. The worm wheel 51 and the worm 52 are meshed. The output shaft end of the motor 32 passes through the interior of the positioning box 5 and is fixedly connected to one end of the worm 52. One end of the telescopic rod 53 is fixedly connected to the outer wall of the positioning box 5, and the other end is rotatably connected to the ball 54, that is, the ball 54 rotates relative to the telescopic rod 53. The telescopic rod 53 is located on the vertical side wall of the positioning box 5 facing the positioning plate 31. A circular hole 313 is provided on the positioning plate 31, and the diameter of the circular hole 313 is larger than the diameter of the ball 54. When the gear 33 disengages from the rack 34 at the top of the rack 34, the telescopic rod 53 pushes the ball 54 through the circular hole 313 by means of its own length. Before that, the ball 54 rolls and abuts against the outer wall of the positioning plate 31.

[0051] refer to Figure 4 and Figure 5 A stopper 351 is fixed at one end of the positioning rod 35, and the other end passes through the positioning box 5 and the center of the worm gear 51 at the same time. The cross section of one end of the positioning rod 35 inserted in the positioning bar 21 is cross-shaped. In the use state: the positioning rod 35 moves in the direction of approaching or moving away from the positioning bar 21, and the positioning rod 35 is inserted in the cross hole. The stopper 351 is magnetic, and the positioning box 5 is made of a magnetically absorbable material. The stopper 351 is magnetically absorbed by the outer wall of the positioning box 5.

[0052] refer to Figure 4 The positioning plate 31 is ball-hinged with a sub-plate 6, and a sub-rod 61 is slidably provided on the sub-plate 6. The sub-rod 61 slides in the vertical direction, that is, a slide rail is provided on the sub-plate 6 in the vertical direction, and the end of the sub-rod 61 slides on the slide rail, and a bolt is provided. The bolt is threadedly connected with the sub-rod 61, and the sub-rod 61 is locked on the slide rail by the bolt. The cross section of the sub-rod 61 is also cross-shaped, and the end of the sub-rod 61 is inserted into the cross hole. The sub-rod 61 and the positioning rod 35 are distributed at both ends of the same positioning strip 21. A pointed cone is also provided at the bottom end of the sub-plate 6 to facilitate the insertion of the sub-plate 6 on the foundation.

[0053] The implementation principle of a soft soil foundation solidification treatment device in the embodiment of the present application is as follows: the casing 1 acts as a seepage well, the pore water enters the casing 1 through the casing 1, and the pore water accumulated in the casing 1 is pumped out by a water pump, thereby completing the drainage and consolidation of the foundation. The arrangement of the inner tube 11 and the outer cylinder 12 provides space for the placement of the filter screen 2. The filter screen 2 protects the water permeable holes 14 and prevents the clogging of the water permeable holes 14. At the same time, it filters the pore water that penetrates into the casing 1, reduces the accumulation of sediment in the casing 1, and ensures the subsequent In order to improve the pile quality of the concrete pile cast in the continuous casing 1, the positioning plate 31 and the auxiliary plate 6 are embedded in the foundation, the ends of the auxiliary rod 61 and the ends of the positioning rod 35 are embedded in the same two sides of the positioning strip 21, and the motor 32 is started. The filter screen 2 can be recycled through the recovery device 3 to reduce resource waste. At the same time, removing the filter screen 2 reduces the obstruction of the water permeable hole 14 at this time, which makes it easier to pour concrete into the casing 1. Part of the concrete penetrates into the surrounding soil through the water permeable hole 14, further reinforcing the soil.

[0054] The embodiment of the present application also discloses a method for solidifying a soft soil foundation.

[0055] The following steps are involved:

[0056] S1. Along the edge of the demarcated range of the foundation of the building to be constructed, multiple casings 1 are sequentially driven into the soft soil foundation at intervals, with adjacent casings 1 arranged at intervals and the permeable holes 14 all arranged toward the adjacent casings 1, and a cushion layer is laid on the top surface of the soft soil foundation;

[0057] S2, pump out the accumulated water in the casing 1 by a water pump, and drive the casing 1 again on the foundation outside the edge of the foundation demarcation range of the building to be constructed, and only one casing 1 is set in one direction this time;

[0058] S3, draining the accumulated water inside the casing 1 arranged along the edge of the foundation demarcation range of the building to be constructed, cleaning the inside of the casing 1, recycling the filter screen 2 through the recycling device 3 after the cleaning, and pouring concrete into the casing 1;

[0059] S4, high pressure concrete is sprayed through the water permeable hole 14 toward the direction close to the adjacent casing 1;

[0060] S5. The concrete pile is poured until it coincides with the cushion layer.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soft soil foundation solidification treatment device, characterized in that: The sleeve (1) comprises an inner tube (11) and an outer tube (12); the inner tube (11) is located inside the outer tube (12) and a plurality of reinforcement strips (13) are fixed between the inner tube (11) and the outer tube (12); the reinforcement strips (13) are arranged along the length direction of the sleeve (1); adjacent reinforcement strips (13) are arranged at intervals along the circumferential outer wall of the inner tube (11); the bottom of the inner tube (11) is fixedly connected to the inner wall of the bottom of the outer tube (12); a filter screen (2) is placed between the inner tube and the outer tube (12); a water permeable hole (14) is provided on the sleeve (1) and passes through the inner tube (11) and the outer tube (12); and a filter screen (2) is provided for collecting the filter screen (2). The recycling device (3) includes a positioning plate (31), a motor (32), a gear (33), a rack (34) and a positioning rod (35), wherein the positioning plate (31) is inserted and fixed on a foundation beside the sleeve (1), the motor (32) is slidably arranged on the positioning plate (31), and the sliding direction slides in the vertical direction, the rack (34) is fixed on the positioning plate (31) in the vertical direction, the gear (33) is fixed on the output shaft of the motor (32) in an annular sleeve, the gear (33) and the rack (34) are meshed, the motor (32) is used to drive the positioning rod (35) to rotate, and the positioning rod (35) is used to rotate. 5) is slidably arranged on the positioning plate (31), the positioning rod (35) slides in a direction approaching or moving away from the filter screen (2), and the positioning rod (35) is used to form a connection with the top edge of the filter screen (2); a positioning strip (21) is fixed to the top of the filter screen (2), a cross hole is opened at the end surface of the positioning strip (21), and the cross hole is opened along the length direction of the positioning strip (21); the cross-shaped cross section of the end surface where the positioning rod (35) and the positioning strip (21) are inserted is a cross, and the positioning rod (35) is inserted in the cross hole; the positioning strip (21) is mounted on the top of the reinforcement strip (13); the positioning plate (31) is opened in the vertical direction A long hole (311) is provided, a slider (4) is slidably provided in the long hole (311), the slider (4) slides in a vertical direction, a positioning pin (42) and a first spring (41) are provided on the slider (4), a positioning hole is provided on the positioning plate (31), the positioning pin (42) is slidably provided on the slider (4) and the sliding direction is in a direction close to or away from the positioning hole, the first spring (41) is used to push the positioning pin (42) to move in a direction close to the positioning hole; when the end of the positioning pin (42) is inserted into the positioning hole, the gear (33) is disengaged from the rack (34); the motor (32) is fixed on the slider (4);A positioning box (5), a worm wheel (51) and a worm (52) are arranged between the motor (32) and the positioning rod (35); the worm wheel (51) and the worm (52) are meshed with each other and are both located in the positioning box (5); the worm (52) is rotatably arranged in the positioning box (5) and rotates relative to the positioning box (5); an end tube of the output shaft of the motor (32) penetrates into the interior of the positioning box (5) and is fixedly connected to the end of the worm (52); the positioning rod (35) penetrates the center of the positioning box (5) and the worm wheel (51); the positioning rod (35) follows the worm wheel (51) and synchronously rotates relative to the positioning box (5); and the positioning rod (35) is slidably arranged relative to the positioning box (5) and the worm wheel (51). ; 2. The soft soil foundation solidification treatment device according to claim 1, characterized in that: An anti-slip strip (22) is fixed to the bottom end of the filter screen (2); one end of the anti-slip strip (22) is located at a position where the water permeable hole (14) penetrates the outer tube (12); and the other end is located at a position where the water permeable hole (14) penetrates the inner tube (11); a breaking groove (23) is provided on the anti-slip strip (22) for facilitating separation of the filter screen (2) and the anti-slip strip (22); the breaking groove (23) is located on the side of the anti-slip strip (22) away from the bottom end of the sleeve (1).

3. The soft soil foundation solidification treatment device according to claim 1, characterized in that: The positioning plate (31) is provided with a second spring (312), the second spring (312) being vertically located in the elongated hole (311), the bottom end of the second spring (312) being fixedly connected to the inner wall of the bottom end of the elongated hole (311), and the top end of the second spring (312) being fixedly connected to the slider (4).

4. The soft soil foundation solidification treatment device according to claim 1, characterized in that: The positioning box (5) is provided with a telescopic rod (53), one end of the telescopic rod (53) is fixedly connected to the outer wall of the positioning box (5), and the other end is rotatably connected to a ball (54), the ball (54) is in rolling contact with the positioning plate (31), and the positioning plate (31) is provided with a circular hole (313) for the telescopic rod (53) to pass through, and the diameter of the circular hole (313) is larger than the diameter of the ball (54).

5. The soft soil foundation solidification treatment device according to claim 1, characterized in that: The positioning plate (31) is ball-hinged with a sub-plate (6), the sub-plate (6) is slidably provided with a sub-rod (61), the sub-rod (61) slides in a vertical direction, the end of the sub-rod (61) is inserted into a cross hole, and the sub-rod (61) and the positioning rod (35) are distributed at both ends of the same positioning strip (21).

6. A soft soil foundation solidification treatment method using a soft soil foundation solidification treatment device as claimed in claim 1, characterized in that: The following steps are involved: S1. Along the edge of the demarcated range of the foundation of the building to be constructed, a plurality of casings (1) are sequentially driven into the soft soil foundation at intervals, with adjacent casings (1) arranged at intervals and the water-permeable holes (14) all arranged in the direction of adjacent casings (1), and a cushion layer is laid on the top surface of the soft soil foundation; S2, pumping out the accumulated water in the casing (1) by means of a water pump, and driving another casing (1) into the foundation outside the edge of the demarcated range of the foundation of the building to be constructed, wherein only one casing (1) is required to be driven in one direction; S3, draining the accumulated water inside the casing (1) arranged along the edge of the foundation demarcation range of the building to be constructed, and then cleaning the inside of the casing (1); after the cleaning is completed, the filter screen (2) is recovered by the recovery device (3), and concrete is poured into the inside of the casing (1); S4, high-pressure concrete is sprayed through the water-permeable holes (14) toward the direction close to the adjacent casing (1); S5. The concrete pile is poured until it coincides with the cushion layer.

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