Preloading soft foundation reinforcing device
By designing the guide pipe and positioning components, the problem of positional deviation of the drainage plastic board during insertion and extraction was solved, enabling accurate positioning of the drainage plastic board in soft soil foundation and improving the accuracy and efficiency of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWER CHINA KUNMING ENG CORP LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-26
AI Technical Summary
In existing surcharge preloading soft soil reinforcement devices, the drainage plastic board is prone to moving upward with the duct and deviating from its original design position during the insertion process, resulting in failure to meet design requirements.
The design employs a propulsion guide and positioning assembly. The propulsion guide has an internal propulsion cavity, and the fixing component is connected to the drainage plastic plate. The positioning assembly fixes the position of the drainage plastic plate through guide wing plates and snap-fit components, ensuring that the drainage plastic plate does not deviate from the designed position during insertion and removal.
Effectively fixing the position of the drainage plastic board ensures that it remains in the predetermined design position in the soft soil foundation, preventing the drainage plastic board from moving up and deviating, thus improving the accuracy and efficiency of construction.
Smart Images
Figure CN224281220U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soft soil reinforcement technology, specifically to a surcharge preloading soft soil reinforcement device. Background Technology
[0002] Silt is characterized by low strength and bearing capacity, high sensitivity, compressibility and water content, high fluidity, and serious pollution. It is widely distributed in the southern coastal areas of my country.
[0003] The deformation process of silt foundations is very complex. When the embankment on a silt foundation is filled to a certain height and subjected to pressure, it will cause the internal stress of the temporarily consolidated soil to redistribute, resulting in uneven settlement. During the construction of the support pile foundation platform in this section of the river channel, conventional backfilling of the construction platform would cause a large amount of silt from the lake in the operating area to overflow, affecting the normal operation of the shallow lake in the scenic area and environmental protection. At the same time, a large amount of silt needs to be transported away during the excavation of the Hai Shang Tian Garden River, increasing construction costs. Vacuum preloading or vacuum combined surcharge preloading is a common method for soft soil foundation reinforcement. Vacuum combined surcharge preloading is a commonly used method. This method loads preload on the site, causing pore water in the soil to be discharged along the drainage board, gradually consolidating the soil, causing the foundation to settle, and gradually increasing its strength.
[0004] Utility model patent CN217536915U discloses a vacuum combined surcharge preloading soft soil reinforcement structure for road soft soil treatment, including a drainage plastic board, a propulsion block, and a cofferdam. Both the drainage plastic board and the cofferdam are embedded inside the soft soil. The drainage plastic board has a filter screen on its exterior and at least one reinforcing pipe inside. The propulsion block has a connecting seat at its top, and the bottom of the drainage plastic board extends into the connecting seat. At least one check plate is rotatably mounted on both sides of the propulsion block, and a counterweight is mounted on one side of each check plate. Positioning strips are provided on the top of both sides of the material plate. The cofferdam is set on the soft soil surface. The cofferdam is equipped with a pumping mechanism to drain water from the soft soil through the drainage plastic plate and reinforcing pipe. In use, the soft soil surface is leveled, and the drainage plastic plate 1 is inserted into the soft soil using a plate inserter and a sleeve. The drainage plastic plate 1 is cut to the required length. After cutting, a ring of drainage holes is opened on the outer side near the bottom. A filter screen 11 is wrapped around the outside of the drainage holes. The bottom of the drainage plastic plate 1 is inserted into the connecting seat 21 and fixed with glue. One end of the reinforcing pipe 12 is cut at an angle and inserted into the drainage plastic plate 1. The sleeve is fitted over the outside of the drainage plastic plate 1, and the bottom of the sleeve is fitted with the guide seat 22, so that the push block 2 and the sleeve are aligned. The sleeve and the push block 2 are inserted into the soft base by the inserter. After the push block 2 is in place, the sleeve removal operation can begin. Pulling out the sleeve will cause the push block 2 and the drainage plastic plate 1 to rise. When the push block 2 sinks, the check plate 24 is tightly contained inside the connecting groove 23 by the soft base. When the push block 2 rises, the counterweight 25 continuously applies gravity to the check plate 24, causing the check plate 24 to slowly rotate and contact the soft base. This ensures that as the push block 2 rises, the check plate 24 will rotate and hook onto the soft base. The soft foundation prevents the pusher block 2 and the drainage plastic plate 1 from rising, and only the sleeve is pulled out. After the drainage plastic plate 1 is positioned by the positioning belt 3, the drainage plastic plate 1 and the reinforcing pipe 12 are connected to the main pumping pipe 51. A sealing membrane is then laid on the soft foundation, and vacuum pre-pressing and pumping operations can be performed. In this patent, when the pipe is pulled out, the check plate flips and hooks the soft foundation, so that the pusher block and the conduit are separated. During the upward pulling process, only the conduit is pulled out. However, in the initial stage of the pipe pulling, the pusher block and the drainage plastic plate will move upward together with the conduit, causing the position of the drainage plastic plate to move upward and deviate from the original predetermined position, resulting in the depth of the drainage plastic plate not reaching the design requirements. Utility Model Content
[0005] The main purpose of this utility model is to provide a surcharge preloading soft foundation reinforcement device to solve the problem that in the process of inserting the drainage plastic board in the existing surcharge preloading soft foundation reinforcement device, the drainage plastic board is easy to move upward with the guide pipe and deviate from the original design position.
[0006] To achieve the above objectives, this utility model provides a surcharge preloading soft soil foundation reinforcement device, including a drainage plastic board, and further comprising:
[0007] The propulsion assembly includes a propulsion conduit and a fixing member disposed on the propulsion conduit; the propulsion conduit has a propulsion cavity inside; the drainage plastic plate is inserted into the propulsion cavity; the end of the fixing member extends beyond the end of the propulsion conduit, and the fixing member moves toward the axis of the propulsion conduit under the action of external force to connect with the drainage plastic plate, thereby fixing the position of the drainage plastic plate relative to the propulsion conduit;
[0008] The positioning assembly includes a positioning element detachably connected to the propulsion conduit and a snap-fit element disposed on the positioning element; the positioning element has guide vanes at both ends; the guide vanes are inclined to the positioning element, and there is a gap between the end of the guide vane away from the positioning element and the outer wall of the propulsion conduit; the snap-fit element snaps into the end of the drainage plastic plate that extends beyond the propulsion conduit.
[0009] As a further improvement of this utility model, the fixing component includes a fixing sleeve fixedly disposed on the propulsion guide tube and a fixing rod movably disposed within the fixing sleeve; the fixing rod and the fixing sleeve are connected by threads, and the fixing rod moves toward the axis of the propulsion guide tube under the action of external force and abuts against the drainage plastic plate.
[0010] As a further improvement of this utility model, a guide block is provided on the inner wall of the propulsion conduit; a guide groove is provided at the center of the guide block; and the drainage plastic plate is located in the guide groove.
[0011] As a further improvement of this utility model, the positioning component includes a positioning plate, a positioning sleeve on the positioning plate, and a positioning rod at the end of the push guide tube away from the guide block, the positioning rod being movably connected to the positioning sleeve.
[0012] As a further improvement of this utility model, a guide plate is provided at the bottom end of the positioning plate; the external dimensions of the guide plate decrease from the end adjacent to the positioning plate to the end away from the positioning plate.
[0013] As a further improvement of this utility model, the guide plate extends to the guide wing plate; the guide wing plate is fixedly connected to the positioning plate.
[0014] As a further improvement of this utility model, the snap-fit component includes a snap-fit hook; the snap-fit hook penetrates the drainage plastic plate.
[0015] The beneficial effects of this utility model are reflected in:
[0016] By setting up a propulsion guide to provide support and guidance for the insertion of the drainage plastic board into the soft soil foundation, and by using a snap-fit device to connect the positioning device to the drainage plastic board, after the propulsion guide drives the drainage plastic board into the soft soil foundation and reaches the predetermined design position, the soil covers the positioning device and the guide wing plate, fixing the position of the positioning device in the soft soil foundation. During the process of pulling out the propulsion guide, the positioning device will not move with the propulsion guide, thereby preventing the drainage plastic board from moving upward and ensuring that the position of the drainage plastic board after insertion is in the predetermined design position. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a surcharge preloading soft soil reinforcement device according to this utility model;
[0018] Figure 2 This is a schematic diagram of the propulsion guide structure of a surcharge preloading soft soil reinforcement device according to the present invention;
[0019] Figure 3 This is a schematic diagram of the positioning component structure of a surcharge preloading soft soil reinforcement device according to the present invention;
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Drainage plastic board; 2. Propulsion guide tube; 3. Fixing component; 301. Fixing sleeve; 302. Fixing rod; 4. Propulsion cavity; 5. Positioning component; 501. Positioning plate; 6. Snap-fit component; 601. Snap-fit hook; 602. Vertical rod; 7. Guide wing plate; 8. Guide block; 9. Guide groove; 10. Positioning sleeve; 11. Positioning rod; 12. Guide plate. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] In one embodiment, see Figure 1 The present invention provides a surcharge preloading soft foundation reinforcement device, comprising a drainage plastic board 1, a propulsion component, and a positioning component.
[0024] The propulsion assembly includes a propulsion conduit 2 and a fixing member 3 disposed on the propulsion conduit 2. The propulsion conduit 2 has a propulsion cavity 4 inside, and the drainage plastic plate 1 is inserted into the propulsion cavity 4. The end of the fixing member 3 extends beyond the end of the propulsion conduit 2. Under the action of external force, the fixing member 3 moves toward the axis of the propulsion conduit 2 and connects with the drainage plastic plate 1, thereby fixing the position of the drainage plastic plate 1 relative to the propulsion conduit 2. The positioning assembly includes a positioning member 5 detachably connected to the propulsion conduit 2 and a snap-fit member 6 disposed on the positioning member 5. The two ends of the positioning member 5 are provided with guide vanes 7. The guide vanes 7 are inclined to the positioning member 5. There is a gap between the end of the guide vane 7 away from the positioning member 5 and the outer wall of the propulsion conduit. The snap-fit member 6 snaps into the end of the drainage plastic plate 1 that extends beyond the propulsion conduit.
[0025] During the process of inserting the drainage plastic board 1 into the soft soil foundation (such as silt), the drainage plastic board 1 is usually rolled into a cylindrical shape. Due to the poor overall support of the drainage plastic board 1, it is difficult to insert it directly into the soft soil foundation. Usually, the drainage plastic board 1 is inserted into the push guide tube 2, which provides support for the drainage plastic board 1. After the push guide tube 2 is inserted into the soft soil foundation, the drainage plastic board 1 is also inserted into the soft soil foundation. Finally, the guide tube is pulled out, leaving a certain length of drainage plastic board 1. Then, the work station is moved to the next work station to perform the drainage plastic board 1 insertion operation. During the tube pulling process, in order to prevent the drainage plastic board 1 from moving upward and deviating from the predetermined position along with the push guide tube, the position of the positioning component 5 is fixed by the soil covering and connecting with the soil in the soft soil foundation, thereby fixing the position of the drainage plastic board 1 in the soft soil foundation and preventing the drainage plastic board 1 from moving with the push guide tube.
[0026] Further, see Figure 2 The fixing component 3 includes a fixing sleeve 301 fixedly mounted on the propulsion guide tube 2 and a fixing rod 302 movably mounted inside the fixing sleeve 301. The fixing rod 302 is connected to the fixing sleeve 301 by a thread. Under the action of external force, the fixing rod 302 moves toward the axis of the propulsion guide tube 2 and abuts against the drainage plastic plate 1.
[0027] Preferably, two sets of fixing sleeves 301 and fixing rods 302 are provided respectively. The fixing sleeves 301 are fixedly connected to the propulsion guide tube 2, and the axes of the two sets of fixing sleeves 301 are on the same straight line and pass through the axis of the propulsion guide tube 2.
[0028] Preferably, the fixing sleeve 301 has an internal thread, and the fixing rod 302 has an external thread.
[0029] Further, see Figure 2 The inner wall of the propulsion conduit 2 is provided with a guide block 8, and the center of the guide block 8 is provided with a guide groove 9, and the drainage plastic plate 1 is located in the guide groove 9.
[0030] Preferably, two sets of guide blocks 8 are symmetrically arranged, and the guide grooves 9 are parallel to the axis of the propulsion guide tube 2. When the drainage plastic plate 1 is inserted into the propulsion cavity 4, the two sides of the drainage plastic plate 1 are located in the guide grooves 9, thereby restricting the position of the drainage plastic plate 1 in the propulsion cavity 4.
[0031] In the above setup, after the drainage plastic plate 1 is inserted into the propulsion guide 2 and connected to the snap-fit 6, the drainage plastic plate 1 is straightened so that the positioning piece 5 abuts against the bottom end of the propulsion guide 2. The two sets of fixing rods 302 are rotated and moved towards each other to abut against both sides of the drainage plastic plate 1, thereby fixing the position of the drainage plastic plate 1 relative to the propulsion guide 2. When the propulsion guide 2 is pushed into the soft soil foundation by the inserting machine, the propulsion guide 2 drives the positioning plate 501 and the drainage plastic plate to be inserted together.
[0032] Further, see Figure 3 The positioning component 5 includes a positioning plate 501, on which a positioning sleeve 10 is provided. A positioning rod 11 is provided at the end of the push guide tube 2 away from the guide block 8, and the positioning rod 11 is movably connected to the positioning sleeve 10.
[0033] Preferably, the positioning sleeve 10 is a hollow cylinder with one end open. Two sets of positioning sleeves 10 are arranged at intervals. The distance between the two sets of positioning sleeves 10 is greater than the inner diameter of the pushing cavity. The positioning rod 11 is fixedly installed on the pushing guide tube 2, and the positioning rod 11 and the positioning sleeve 10 are fitted with a clearance.
[0034] Further, see Figure 3 The bottom end of the positioning plate 501 is provided with a guide plate 12, and the external dimensions of the guide plate 12 decrease from the end adjacent to the positioning plate 501 to the end away from the positioning plate 501.
[0035] Preferably, the guide plate 12 has a triangular pyramidal structure, and the bottom end of the guide plate 12 is fixedly connected to the positioning plate 501.
[0036] Further, see Figure 3 The guide plate 12 extends onto the guide wing plate 7, and the guide wing plate 7 is fixedly connected to the positioning plate 501.
[0037] Preferably, a "U"-shaped structure is formed between the guide vane 7 and the positioning plate 501.
[0038] In the above setup, when the inserter drives the propulsion guide 2 into the soft soil foundation, the guide plate 12 breaks through the soft soil foundation to facilitate the insertion of the propulsion guide 2. As the propulsion guide 2, guide plate 12, and positioning plate 501 continuously enter the soft soil foundation, the "U"-shaped structure of the guide wing plate 7 reduces resistance. When the drainage plastic plate 1 reaches the predetermined position, the pusher stops and the propulsion guide moves downward. At this time, the soil in the soft soil foundation covers the area between the guide wing plate 7 and the propulsion guide 2 and is located on the positioning plate 501. Under the soil, the positioning plate 501 and guide wing plate 7... The position is fixed. Since the push pipe 2 and the positioning plate 501 are connected by the positioning rod 11 and the positioning sleeve 10, the space above the positioning plate 501 is increased, which makes it easier for the soil to move and press on the positioning plate 501. In addition, the contact area between the positioning rod 11 and the positioning sleeve 10 is small. During the process of pulling up the push pipe 2, the friction between the positioning rod 11 and the positioning sleeve 10 is small. Under the action of the soil, the positioning plate 501 will not move up during the process of pulling up the push pipe 2, thus ensuring that the drainage plastic plate 1 is located in the predetermined design position.
[0039] Further, see Figure 3 The snap-fit component 6 includes a snap-fit hook 601, which penetrates the drainage plastic plate 1.
[0040] Preferably, the snap-fit hook 601 has a semi-circular arc structure, and one end of the snap-fit hook 601 is provided with a vertical rod 602. The vertical rod 602 is fixedly connected to the positioning plate 501, and the end of the snap-fit hook 601 away from the vertical rod 602 faces the positioning plate 501.
[0041] In the above setup, the positioning plate 501 is connected to the drainage plastic plate 1 by hooking the hook 601. During the process of straightening the drainage plastic plate 1, the positioning plate 501 is moved toward the push guide tube 2, and the positioning rod 11 is inserted into the positioning sleeve 10. At this time, the guide wing plate 7 is located on both sides of the push guide tube 2, and the drainage plastic plate 1 is flat in the push cavity 4 and in the guide groove 9. After the drainage plastic plate 1 is straightened, the fixing rod 302 is rotated to abut against the drainage plastic plate 1 to fix the position of the drainage plastic plate 1. The operation is convenient and quick by hooking the hook 601 to the drainage plastic plate 1.
[0042] In this embodiment, the drainage plastic plate 1, which extends out of the propulsion chamber 4, is connected to the snap-fit hook 601. During the process of straightening the drainage plastic plate 1, the positioning plate 501 moves toward the propulsion guide tube, causing the positioning rod 11 to be inserted into the positioning sleeve 10. The guide wing plate 7 is located on both sides of the propulsion guide tube 2. After the drainage plastic plate 1 is straightened, the rotating fixing rod 302 abuts against the drainage plastic plate 1, thereby fixing the position of the drainage plastic plate 1. The propulsion guide tube 2, along with the drainage plastic plate 1, is inserted into the soft soil foundation through the insert plate mechanism. The guide plate 12 breaks through the soil, and the positioning plate 501 reaches the pre-set position. After determining the design position, rotate the fixing rod 302 to separate it from the drainage plastic plate 1. At this time, the soil in the soft soil foundation covers the positioning plate 501, so that the position of the positioning plate 501 is fixed. When the push guide 2 is moved upward, the positioning rod 11 separates from the positioning sleeve 10. Under the action of the positioning plate 501, the drainage plastic plate 1 will not move upward with the push guide 2, thus ensuring that the position of the drainage plastic plate 1 is in the predetermined design position. After the push guide 2 is pulled out, it is cut off after reserving the length of the drainage plastic plate 1 according to the design requirements, and the next work station's drainage plastic plate 1 insertion operation can be carried out.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A preloading soft ground reinforcement device, comprising a drainage plastic sheet (1), characterized in that, Also includes: The propulsion assembly includes a propulsion conduit (2) and a fixing member (3) disposed on the propulsion conduit (2); the propulsion conduit (2) has a propulsion cavity (4) inside; the drainage plastic plate (1) is inserted into the propulsion cavity (4); the end of the fixing member (3) extends beyond the end of the propulsion conduit (2), and the fixing member (3) moves toward the axis of the propulsion conduit (2) under the action of external force to connect with the drainage plastic plate (1), thereby fixing the position of the drainage plastic plate (1) relative to the propulsion conduit (2); The positioning assembly includes a positioning element (5) detachably connected to the propulsion conduit (2) and a snap-fit element (6) disposed on the positioning element (5); the positioning element (5) has guide vanes (7) at both ends; the guide vanes (7) are inclined to the positioning element (5), and there is a gap between the end of the guide vanes (7) away from the positioning element (5) and the outer wall of the propulsion conduit; the snap-fit element (6) snaps into the end of the drainage plastic plate (1) that extends beyond the propulsion conduit.
2. The preloading device according to claim 1, wherein: The fixing component (3) includes a fixing sleeve (301) fixedly mounted on the propulsion guide tube (2) and a fixing rod (302) movably mounted inside the fixing sleeve (301); the fixing rod (302) is connected to the fixing sleeve (301) by a thread, and the fixing rod (302) moves toward the axis of the propulsion guide tube (2) and abuts against the drainage plastic plate (1) under the action of external force.
3. The preloading device according to claim 2, wherein: The inner wall of the propulsion conduit (2) is provided with a guide block (8); the center of the guide block (8) is provided with a guide groove (9); the drainage plastic plate (1) is located in the guide groove (9).
4. The preloading device according to claim 3, wherein: The positioning component (5) includes a positioning plate (501), a positioning sleeve (10) is provided on the positioning plate (501), and a positioning rod (11) is provided at the end of the push guide (2) away from the guide block (8), and the positioning rod (11) is movably connected to the positioning sleeve (10).
5. The surcharge preloading soft soil reinforcement device according to claim 4, characterized in that: The bottom end of the positioning plate (501) is provided with a guide plate (12); the external dimensions of the guide plate (12) decrease from one end near the positioning plate (501) to the end away from the positioning plate (501).
6. The surcharge preloading soft soil reinforcement device according to claim 5, characterized in that: The guide plate (12) extends onto the guide wing plate (7); the guide wing plate (7) is fixedly connected to the positioning plate (501).
7. The surcharge preloading soft soil reinforcement device according to claim 6, characterized in that: The snap-fit component (6) includes a snap-fit hook (601); the snap-fit hook (601) penetrates the drainage plastic board (1).