Reinforcing structure of soft soil foundation

Abstract

The utility model relates to the technical field of foundation reinforcement, and discloses a soft soil foundation reinforcement structure which comprises a vertical drainage channel and a transverse drainage channel, a drainage pipe is installed in the vertical drainage channel, partition rings are arranged on the drainage pipe at intervals in the length direction, and the drainage pipe is wrapped with geotechnical cloth. And the space ring is wrapped in the geotechnical cloth. The drainage pipe can be more conveniently pulled away, and the construction difficulty is reduced.

Description

Technical Field

[0001] This application relates to the technical field of foundation reinforcement, and in particular to a reinforcement structure for soft soil foundations. Background Technology

[0002] In the field of civil engineering, the treatment of soft soil foundations is an important and challenging task. Soft soil foundations are characterized by low bearing capacity, high compressibility, and low permeability. These characteristics make them prone to excessive and uneven settlement under load, severely impacting the safety and stability of the superstructure. Therefore, how to effectively reinforce soft soil foundations and improve their bearing capacity and stability has always been a research hotspot in the field of civil engineering.

[0003] Vacuum well drainage systems are a commonly used method in existing soft soil foundation reinforcement technologies. This technology accelerates the drainage of pore water from the soil by setting up vertical drainage channels, such as plastic drainage boards or bagged sand wells, in the soft soil foundation, combined with vacuum negative pressure, thereby achieving foundation consolidation. However, after reinforcement, it is necessary to disrupt the vertical drainage channels to prevent further drainage and consolidation, which could adversely affect the superstructure. Currently, to better disrupt the vertical drainage channels, vacuum drainage pipes are inserted, surrounded by geotextile and filled with filter material. However, when the vacuum drainage pipes are removed after the foundation has consolidated, the lateral pressure generated by the soil consolidation creates a "clamping effect," requiring the removal process to overcome significant friction and passive earth pressure. This not only increases construction difficulty but may also pose a potential threat to foundation stability.

[0004] Given the shortcomings of existing technologies, how to design a new type of soft soil foundation reinforcement structure that can effectively reinforce the foundation, smoothly extract the vacuum drainage pipe after reinforcement, and reduce disturbance and damage to the foundation has become an urgent technical problem to be solved. Utility Model Content

[0005] In order to improve the above-mentioned technical problems, this application provides a reinforcement structure for soft soil foundation.

[0006] This application provides a reinforcement structure for soft soil foundations, employing the following technical solution:

[0007] A reinforcement structure for soft soil foundation includes a vertical drainage channel and a horizontal drainage channel. A drainage pipe is installed in the vertical drainage channel. The drainage pipe is provided with spacer rings at intervals along its length. The drainage pipe is covered with geotextile, and the spacer rings are wrapped inside the geotextile.

[0008] By adopting the above technical solution, the separator ring forms a local gap between the geotextile and the drainage pipe, reducing the contact area between the two and directly weakening the lateral friction force on the drainage pipe after soil consolidation. The gap design does not affect the vertical state of the drainage pipe or the continuity of the drainage path. The vacuum negative pressure transmission efficiency is comparable to that of traditional solutions. The non-fully bonded geotextile allows the lateral pressure of the soil to be dispersed to the surrounding filter material through the separator ring, avoiding stress concentration that could exacerbate the "clamping effect". Due to the reduction in lateral pressure, the friction and passive earth pressure that need to be overcome during pipe extraction are reduced, making it easier to extract the drainage pipe, reducing construction difficulty and the possibility of posing a potential threat to the stability of the foundation.

[0009] Optionally, the two ends of the separator ring are connected end to end, and the drain pipe is provided with a driving component for driving the two ends of the separator ring to separate.

[0010] By adopting the above technical solution, when it is necessary to pull out the drainage pipe, the driving component separates the two ends of the separator ring. The tendency of the two ends of the separator ring to move away from each other will stretch the geotextile, causing the geotextile and the drainage pipe to separate. In this way, during the pipe pulling process, the binding effect of the geotextile on the drainage pipe is reduced, and the friction between the soil and the drainage pipe is further reduced, which greatly facilitates the upward pulling of the drainage pipe and improves construction efficiency.

[0011] Optionally, the dividing rings are distributed in a spiral shape.

[0012] By adopting the above technical solution, in soft soil foundations, soil pressure comes from all directions. The spiral distribution allows the separator to function in different directions, achieving uniform stress. When subjected to lateral pressure from different directions of the soil, the stress in each direction is more balanced. From the perspective of drainage principles, a more reasonable structural distribution is conducive to water flow. The spiral distribution meets this requirement and can improve drainage performance.

[0013] Optionally, the two ends of the separator ring are respectively connected to connecting blocks, and the driving component includes a plug rod and a pull rope. The plug rod is inserted into the two connecting blocks, and the pull rope is connected to the plug rod.

[0014] By adopting the above technical solution, this mechanical connection and drive method facilitates accurate control by operators, meeting the actual needs during construction. The insertion rod is connected to the connecting blocks at both ends of the separator ring, and the rod is pulled by a rope, achieving precise control over the separation of the separator ring's beginning and end. When pipe extraction is required, operators can gradually separate the separator ring's beginning and end by controlling the pull of the rope, thereby driving the localized separation of the geotextile and drainage pipe. This makes the pipe extraction process more controllable. The drive mechanism has a simple structure, consisting of an insertion rod and a rope, making it easy to manufacture and install, thus reducing costs.

[0015] Optionally, the insertion rod contacts the outer wall of the drain pipe.

[0016] By adopting the above technical solution, when the pull rope is used to pull the plug rod, if there is no support from the outer wall of the drain pipe, the plug rod may shake due to uneven force, affecting its normal operation. After contact, it can provide stable support. The stable position of the plug rod is conducive to improving the accuracy of the operator pulling the pull rope, so that the plug rod can move in the expected way, and thus more accurately control the degree of separation of the two ends of the separator ring.

[0017] Optionally, the pull rope is connected to a sliding member, which contacts the outer wall of the drain pipe.

[0018] By adopting the above technical solution, the sliding component, along with the movement of the pull rope, can also drive the geotextile and drainage pipe to peel off.

[0019] Optionally, the slider has a spherical structure.

[0020] By adopting the above technical solution, based on the principle of friction, the contact method between the spherical structure and the contact surface results in relatively small friction, making it easy to move.

[0021] Optionally, the geotextile and the separator ring are fixedly connected, and the geotextile between two adjacent separator rings is in a taut state.

[0022] By adopting the above technical solution, the geotextile between two adjacent dividing rings is taut, leaving a gap between the geotextile and the outer wall of the drainage pipe, ensuring unobstructed drainage channels. This facilitates the smooth discharge of pore water from the soil through the drainage channels, improving the speed and quality of foundation consolidation. During pipe extraction, the gap between the taut geotextile and the outer wall of the drainage pipe reduces the direct contact area between the soil and the drainage pipe, thereby reducing the lateral pressure and friction of the soil on the drainage pipe.

[0023] In summary, this application includes at least one of the following beneficial effects:

[0024] 1. The separator ring is wrapped with geotextile and is located between the geotextile and the drainage pipe, so that the geotextile is not completely attached to the drainage pipe, reducing the contact area between the two and directly weakening the lateral friction force on the drainage pipe after the soil is consolidated.

[0025] 2. When it is necessary to pull out the drainage pipe, the driving component is used to separate the two ends of the separator ring. The separator ring expands the geotextile, causing the geotextile and drainage pipe to separate, which further reduces the friction between the soil and the drainage pipe. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2This is a schematic diagram of the partition ring distribution structure of the drain pipe according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram illustrating the overall structure of the drive component and the connecting block in an embodiment of this application;

[0029] Figure 4 yes Figure 1 Enlarged diagram of point A.

[0030] Explanation of reference numerals in the attached drawings: 10, vertical drainage channel; 20, horizontal drainage channel; 30, drainage pipe; 40, partition ring; 41, connecting block; 50, geotextile; 60, driving component; 61, insertion rod; 62, pull rope; 70, sliding component. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0032] In soft soil foundation reinforcement projects, the soft soil foundation reinforcement structure provided in this application can efficiently achieve foundation consolidation, while greatly simplifying the drainage pipe removal operation after reinforcement and reducing potential impacts on foundation stability. The specific implementation method of this reinforcement structure will be described in detail below.

[0033] Reference Figure 1 The soft soil foundation reinforcement structure comprises a vertical drainage channel 10 and a horizontal drainage channel 20. The vertical drainage channel 10 serves as the core drainage path, while the horizontal drainage channel 20 works in conjunction with it to ensure that pore water in the soil can be smoothly discharged from the foundation. Within the vertical drainage channel 10, a drainage pipe 30 is precisely installed. The drainage pipe 30, as a key component for water drainage, has its material and specifications selected according to the actual needs of the project to ensure sufficient strength and drainage capacity.

[0034] Reference Figure 2 The drainage pipe 30 is provided with spacer rings 40 at intervals along its length. These spacer rings 40 are detachably installed on the outer wall of the drainage pipe 30 by means of a drive member 60. The spacer rings 40 are made of materials with a certain degree of rigidity and flexibility, such as high-strength plastic or lightweight metal, which can withstand a certain degree of pressure from the soil and deform when the two ends of the spacer ring 40 are separated under the action of the drive member 60.

[0035] Reference Figure 3The separator rings 40 are evenly distributed in a spiral pattern on the surface of the drainage pipe 30. This spiral distribution ensures that the separator rings 40 are evenly stressed in all directions, guaranteeing balanced stress distribution when subjected to lateral pressure from the soil in different directions and preventing localized stress concentration from damaging the drainage pipe 30. Simultaneously, the spiral distribution provides a more continuous and unobstructed drainage path, facilitating the rapid discharge of pore water from the soil and improving the consolidation efficiency of the foundation.

[0036] Reference Figure 4 The drainage pipe 30 is covered with a geotextile 50, which is made of a material with good permeability, filtration properties, and tensile strength, such as polyester filament geotextile 50. The geotextile 50 is tightly wrapped around the drainage pipe 30 and the separator ring 40, and is fixedly connected to the separator ring 40 by heat fusion, adhesive bonding, or sewing. The geotextile 50 between adjacent separator rings 40 is taut, creating a stable gap between the geotextile 50 and the outer wall of the drainage pipe 30. The gap width is determined according to engineering requirements and soil characteristics, generally controlled between 3-8 mm. This gap not only ensures unobstructed drainage, allowing pore water in the soil to drain more smoothly and accelerating foundation consolidation, but also effectively reduces the direct contact area between the soil and the drainage pipe 30 during pipe removal, lowering the lateral pressure and friction of the soil on the drainage pipe 30.

[0037] Reference Figure 3 The two ends of the partition ring 40 are connected to form a closed ring structure. The driving component 60 specifically includes a rod 61 and a pull rope 62. Connecting blocks 41 are connected to both ends of the partition ring 40. The connecting blocks 41 are made of the same or compatible material as the partition ring 40 and are tightly fixed to the partition ring 40 by welding, bolting, or other methods. The rod 61 is a rod-shaped component with a certain length and strength. Its diameter matches the insertion hole on the connecting block 41, allowing the rod 61 to be precisely inserted into the two connecting blocks 41, achieving a temporary connection between the two ends of the partition ring 40. When inserted, the rod 61 and the outer wall of the partition ring are in close contact with the outer wall of the drain pipe 30. One end of the pull rope 62 is fixedly connected to the rod 61, and the other end extends to the foundation surface for easy pulling by the operator. The pull rope 62 is made of high-strength, wear-resistant fiber material, such as nylon rope or steel wire rope, to withstand the pulling force during the pulling process.

[0038] Reference Figure 3 and Figure 4A sliding member 70 is fixedly connected to the pull rope 62. The sliding member 70 has a spherical structure, and the pull rope 62 passes through the center of the spherical structure. It is made of smooth plastic or metal. During the pulling of the pull rope 62, the sliding member 70 can stably follow the movement of the pull rope 62. The sliding member 70 is in close contact with the outer wall of the drain pipe 30. When the pull rope 62 is pulled, the sliding member 70 can slide smoothly along the outer wall of the drain pipe 30, providing a stable guide for the pull rope 62, reducing the swaying and deviation of the pull rope 62 during the pulling process, ensuring that the insertion rod 61 can be pulled accurately, and thus ensuring that the two ends of the separator ring 40 can be separated smoothly.

[0039] During the soft soil foundation reinforcement construction, vertical drainage channels 10 and horizontal drainage channels 20 are first drilled in the soft soil foundation according to the design requirements. Drainage pipes 30, equipped with separator rings 40, geotextile fabric 50, and drive components 60, are then precisely inserted into the vertical drainage channels 10, ensuring that the drainage pipes 30 are in close contact with the surrounding soil. Simultaneously, the horizontal drainage channels 20 are connected to the vertical drainage channels 10, forming a complete drainage system. During the reinforcement process, a vacuum negative pressure device is used to filter pore water in the soil through the geotextile fabric 50, which is then discharged from the foundation through the drainage pipes 30 and horizontal drainage channels 20, thus achieving foundation consolidation.

[0040] The implementation principle of a soft soil foundation reinforcement structure according to an embodiment of this application is as follows:

[0041] When the reinforcement work is completed and the drainage pipe 30 needs to be removed, the operator pulls the rope 62 on the foundation surface. The movement of the rope 62 causes multiple insertion rods 61 to be pulled out from the connecting block 41 simultaneously. As the insertion rods 61 are pulled out, the two ends of the separator ring 40 lose connection. Under the pressure of the soil and its own elasticity, the two ends of the separator ring 40 tend to move away from each other. This tendency causes the separator ring 40 to exert a spreading effect on the geotextile 50, driving the geotextile 50 to separate from the drainage pipe 30. At the same time, the movement of the rope 62 causes the sliding element 70 to slide along the outer wall of the drainage pipe 30. During the sliding process, the sliding element 70 further drives the geotextile 50 to partially separate from the drainage pipe 30, reducing the binding of the geotextile 50 on the drainage pipe 30. As the degree of separation between the geotextile 50 and the drainage pipe 30 increases, the friction between the soil and the drainage pipe 30 is greatly reduced, and the operator can easily pull the drainage pipe 30 upward from the vertical drainage channel 10, completing the entire pipe removal process.

[0042] 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 reinforcement structure for soft soil foundations, characterized in that: It includes a vertical drainage channel (10) and a horizontal drainage channel (20). A drainage pipe (30) is installed in the vertical drainage channel (10). The drainage pipe (30) is provided with partition rings (40) at intervals along its length. The drainage pipe (30) is covered with geotextile (50). The partition rings (40) are wrapped inside the geotextile (50).

2. The soft soil foundation reinforcement structure according to claim 1, characterized in that: The two ends of the separator ring (40) are connected end to end, and the drain pipe (30) is provided with a driving member (60) for driving the two ends of the separator ring (40) to separate.

3. The soft soil foundation reinforcement structure according to claim 2, characterized in that: The dividing rings (40) are distributed in a spiral shape.

4. The soft soil foundation reinforcement structure according to claim 2, characterized in that: The two ends of the separator ring (40) are respectively connected to the connecting blocks (41). The driving component (60) includes a plug rod (61) and a pull rope (62). The plug rod (61) is inserted into the two connecting blocks (41), and the pull rope (62) is connected to the plug rod (61).

5. The soft soil foundation reinforcement structure according to claim 4, characterized in that: The insertion rod (61) is in contact with the outer wall of the drain pipe (30).

6. The soft soil foundation reinforcement structure according to claim 4, characterized in that: The pull rope (62) is connected to a slider (70), which is in contact with the outer wall of the drain pipe (30).

7. A soft soil foundation reinforcement structure according to claim 6, characterized in that: The slider (70) has a spherical structure.

8. The soft soil foundation reinforcement structure according to claim 1, characterized in that: The geotextile (50) and the separator ring (40) are fixedly connected, and the geotextile (50) between two adjacent separator rings (40) is in a taut state.

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