A soft ground reinforcement pipe

Abstract

The utility model discloses a kind of soft soil foundation reinforcement buried pipes, it is related to soft soil foundation treatment technical field, to solve the problem of poor liquid injection uniformity of existing buried pipe, low and pipe soil combination is not firm of positioning accuracy.The buried pipe includes pipe body, top seat, drainage hole, water-permeable membrane, positioning through-hole, anchorage body and jacking piece;Top seat is located at the top of pipe body and diameter is greater than pipe body, pipe body ring surface is evenly distributed drainage hole and inner wall is provided with water-permeable membrane, pipe body is provided with multiple groups of through-hole array along axial direction, and inside corresponding anchorage body array is provided, anchorage body is hollow cylinder and outer end sharp cone, circumferential with grouting hole;Jacking piece can eject anchorage body and pierce into soil body, top seat is provided with sealing cover with air nozzle, pipe body bottom is provided with rigid cone head with sink groove.The utility model realizes multidirectional uniform liquid injection, improves positioning accuracy and pipe soil combination force, enhances soft soil foundation reinforcement effect and overall bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of soft soil foundation treatment technology, and more specifically, to a buried pipe for reinforcing soft soil foundations. Background Technology

[0002] Soft soil foundation refers to a foundation composed of silt, silty soil, fill, miscellaneous fill, or other highly compressible soil layers. This type of foundation is characterized by low strength, large deformation and long duration, high water content and poor permeability. These characteristics of soft soil foundation make it possible for buildings to be constructed directly on it to cause problems such as horizontal displacement and uneven settlement, and may even cause cracks in the building, or even collapse accidents in severe cases.

[0003] Soft soil is characterized by high water content, large porosity, and low bearing capacity, requiring reinforcement in engineering construction. Underground pipe injection of curing agents is a common method. However, existing technologies have the following problems: 1. Poor uniformity of liquid injection: Traditional buried pipes mostly have a single set of liquid outlet holes, and the curing agent is prone to accumulate in the shallow soil, resulting in insufficient liquid injection in the deep soil and uneven distribution of the strength of the reinforced body. 2. Low positioning accuracy: Soft soil has low shear strength, and buried pipes are easily deflected by the lateral pressure of the soil when they are driven in, resulting in large verticality deviations and affecting the reinforcement range. 3. Poor bonding between pipe and soil: The buried pipe is only bonded to the solidified soil through the contact surface. When subjected to load, the interface is prone to slippage, which reduces the overall bearing capacity. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a buried pipe for reinforcing soft soil foundations, thereby solving the problems of poor fluid injection uniformity, low driving positioning accuracy, and poor pipe-soil bonding in the existing technology, and improving the uniformity of reinforcement and overall bearing capacity.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A buried pipe for reinforcing soft soil foundations includes a pipe body, a top seat, drainage holes, a permeable membrane, positioning through holes, and anchor bodies. The top seat is provided on the top of the pipe body, and the diameter of the top seat is larger than the diameter of the pipe body, while its inner diameter is the same as the inner diameter of the pipe body. Multiple sets of drainage holes are evenly distributed on the circumferential surface of the pipe body, and a permeable membrane is provided on the inner wall of the pipe body. Several sets of through hole arrays are opened on the pipe body, and several sets of anchor body arrays are provided inside the pipe body, with the anchor body arrays corresponding to the through hole arrays.

[0006] Furthermore, the through-hole array is composed of several sets of positioning through holes arranged circumferentially along the pipe body, and the positions of the positioning through holes are staggered from the positions of the drainage holes; the anchor array is composed of several anchors arranged circumferentially along the pipe body, the number of anchors is the same as the number of positioning through holes, and the outer end of the anchor is located in the positioning through hole.

[0007] Furthermore, the anchor body is a hollow cylindrical structure with a pointed conical outer end; several grouting holes are provided on the circumferential surface of the anchor body.

[0008] Furthermore, a sealing ring is provided on the inner wall of the positioning through hole to seal the gap between the anchor body and the positioning through hole.

[0009] Furthermore, the top seat is provided with a sealing cover, which is detachably and securely connected to the top seat via threads; the seal is provided with an air nozzle for connecting an external negative pressure air pump.

[0010] Furthermore, it also includes a jacking component for inserting into the inside of the pipe to push the outer part of the anchor body into the soil, including a jacking rod and a jacking block; the bottom of the jacking rod is fixed with a jacking block, the diameter of the jacking rod is smaller than the diameter of the jacking block, the lower end of the jacking block is a conical structure, and the upper end diameter is smaller than the diameter of the pipe body; the overall length of the jacking component is greater than the overall length of the pipe body.

[0011] Furthermore, a rigid cone head with a conical structure is fixed at the bottom of the tube body, and a groove adapted to the lower end of the top block is opened inside the cone head.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model uses multiple sets of anchor bodies arranged axially at intervals in the pipe body, combined with grouting holes in the circumferential direction of the anchor bodies, to achieve uniform penetration of the curing agent in soft soil in multiple directions and at multiple levels, avoiding the problems of shallow accumulation and insufficient deep penetration.

[0013] 2. The rigid cone at the bottom of the tube in this utility model reduces driving resistance, and the top seat balances the lateral pressure of the soil. Under the dual action, the offset of the tube during driving is greatly reduced, ensuring that the verticality and reinforcement range meet the design requirements.

[0014] 3. After the anchor body penetrates the soil, it forms an integrated structure of pipe body-anchor body-solidified soil with the curing agent. Compared with traditional contact surface bonding, it greatly improves the anti-sliding ability of the pipe-soil interface and enhances the overall bearing capacity of the foundation.

[0015] 4. The permeable membrane and drainage holes, combined with a negative pressure air pump, can accelerate the drainage of soil moisture, reduce the water content of soft soil, provide better conditions for the subsequent action of the curing agent, and further improve the reinforcement effect.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the tube body in this utility model.

[0020] Figure 3 This is a schematic diagram of the pusher component in this utility model.

[0021] Figure 4 This is a cross-sectional view of the tube body in this utility model.

[0022] Figure 5 This is a top sectional view of the tube body of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the anchor body in this utility model.

[0024] In the diagram: 1. Sealing cap; 2. Top seat; 3. Pipe body; 31. Cone head; 32. Settling groove; 4. Pushing component; 41. Push rod; 42. Top block; 5. Air nozzle; 6. Drainage hole; 7. Positioning through hole; 8. Water-permeable membrane; 9. Anchor body; 91. Grouting hole; 10. Sealing ring. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] Example 1: like Figures 1 to 6 As shown, this embodiment provides a buried pipe for reinforcing soft soil foundations, including a pipe body 3, a top seat 2, a drainage hole 6, a permeable membrane 8, a positioning through hole 7, and an anchor body 9.

[0027] The tube body 3 is a hollow cylindrical structure with a top seat 2 fixedly installed at the top. The diameter of the top seat 2 is larger than that of the tube body 3, which can enhance the stability during driving. The inner diameter of the top seat 2 is the same as that of the tube body 3, ensuring that the internal channel of the tube body 3 is unobstructed.

[0028] Multiple sets of drainage holes 6 are evenly distributed along the axial and circumferential directions on the annular surface of the pipe body 3. A permeable membrane 8 is attached to the inner wall of the pipe body 3, which allows water in the soil to enter the pipe body 3 and be discharged, while preventing soil particles from entering the pipe body 3 and causing blockage, thus facilitating the collection and discharge of water in the soil.

[0029] The tube body 3 is provided with several sets of through hole arrays at intervals along the axial direction. Each set of through hole arrays is composed of several positioning through holes 7 evenly arrayed along the circumference of the tube body 3. Inside the tube body 3, several sets of anchor bodies 9 arrays are set corresponding to the through hole arrays. Each set of anchor bodies 9 arrays is composed of the same number of anchor bodies 9 as the positioning through holes 7, and the outer end of the anchor body 9 is embedded in the positioning through hole 7.

[0030] The anchor body 9 is a hollow cylindrical structure with a pointed cone shape at the outer end for easy penetration into the soil. Several grouting holes 91 are evenly distributed on the circumference for the curing agent to penetrate into the soil. The inner wall of the positioning through hole 7 is provided with a sealing ring 10 to seal the gap between the anchor body 9 and the positioning through hole 7 and prevent the curing agent from leaking out of the gap.

[0031] A sealing cover 1 is detachably connected to the top seat 2. The sealing cover 1 and the top seat 2 are sealed together by threads. The sealing cover 1 is equipped with an air nozzle 5, which can be connected to an external negative pressure air pump. It can accelerate the infiltration of water in the soil into the pipe body 3 through negative pressure, improve water collection efficiency, and assist in the consolidation of soft soil.

[0032] It is also equipped with a jacking component 4, which is used to push the anchor body 9 out of the positioning through hole 7 and into the soil. The jacking component 4 includes a jacking rod 41 and a jacking block 42. The bottom of the jacking rod 41 is fixedly connected to the jacking block 42. The diameter of the jacking rod 41 is smaller than the diameter of the jacking block 42. The lower end of the jacking block 42 has a conical structure, which is adapted to the sinker 32 at the bottom of the pipe body 3 to ensure stable force during jacking. The upper diameter of the jacking block 42 is smaller than the inner diameter of the pipe body 3, which facilitates movement inside the pipe body 3. The overall length of the jacking component 4 is greater than the length of the pipe body 3 to ensure that all anchor bodies 9 can be completely pushed out.

[0033] A rigid cone head 31 with a conical structure is fixedly installed at the bottom of the tube body 3 to reduce driving resistance and improve verticality. The rigid cone head 31 has a groove 32 inside that is adapted to the lower end of the top block 42, which can provide a space for the top block 42 to reach the bottom, thereby pushing out the bottom anchor body 9.

[0034] Example 2: This embodiment provides the working principle of a buried pipe for soft soil foundation reinforcement: In actual use, the seal is removed, and the assembled buried pipe is driven vertically into the soft soil foundation to the preset depth using a pile driver. The rigid cone 31 reduces the driving resistance, and the top seat 2 balances the lateral pressure of the soil. After the pipe body 3 is driven into the soil, the sealing cap 1 is reinstalled on the top seat 2. The external negative pressure air pump is connected through the air nozzle 5 and the negative pressure is turned on. Water in the soil enters the pipe body 3 through the drainage hole 6 and the permeable membrane 8. After a certain period of time, the sealing cap 1 is removed and the water collected in the pipe body 3 is discharged through the external water pump. The drainage continues for 24-48 hours until the drainage volume stabilizes and decreases. Insert the jacking component 4 into the top opening of the pipe body 3, so that the lower end of the jacking block 42 is inserted into the area between the array of anchor bodies 9. Push the jacking rod 41 through the external press, so that the jacking rod moves downward. Use the diameter change of the jacking rod to push the anchor body 9 out of the positioning through hole 7 and into the surrounding soil, so as to further anchor the pipe body 3. Remove the sealing cap 1 and insert the grouting pipe from the top opening of the pipe body 3. Adjust the injection parameters according to the characteristics of the soft soil. The curing agent seeps into the soil through the grouting hole 91 of the anchor body 9. After the injection is completed, keep the buried pipe stationary for 7-14 days until the curing agent is completely solidified, forming an integrated structure of pipe body 3-anchor body 9-solidified soil, thus completing the soft soil foundation reinforcement.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A buried pipe for reinforcing soft soil foundations, characterized in that, It includes a pipe body (3), a top seat (2), a drainage hole (6), a permeable membrane (8), a positioning through hole (7), and an anchor body (9); the top of the pipe body (3) is provided with a top seat (2), the diameter of the top seat (2) is larger than the diameter of the pipe body (3), and its inner diameter is the same as the inner diameter of the pipe body (3); multiple sets of drainage holes (6) are evenly distributed on the annular surface of the pipe body (3), and a permeable membrane (8) is provided on the inner wall of the pipe body (3); several sets of through hole arrays are opened on the pipe body (3), and several sets of anchor body (9) arrays are provided inside the pipe body (3), and the anchor body (9) arrays correspond to the through hole arrays.

2. The buried pipe for soft soil foundation reinforcement according to claim 1, characterized in that: The through-hole array is composed of several sets of positioning through holes (7) arranged circumferentially along the pipe body (3), and the positions of the positioning through holes (7) are staggered from the positions of the drainage holes (6); the anchor body (9) array is composed of several anchor bodies (9) arranged circumferentially along the pipe body (3), the number of anchor bodies (9) is the same as the number of positioning through holes (7), and the outer end of the anchor body (9) is located in the positioning through hole (7).

3. The buried pipe for soft soil foundation reinforcement according to claim 2, characterized in that: The anchor body (9) is a hollow cylindrical structure with a pointed cone shape at its outer end; several grouting holes (91) are provided on the circumferential surface of the anchor body (9).

4. The buried pipe for soft soil foundation reinforcement according to claim 2, characterized in that: A sealing ring (10) is provided on the inner wall of the positioning through hole (7) to seal the gap between the anchor body (9) and the positioning through hole (7).

5. The buried pipe for soft soil foundation reinforcement according to claim 1, characterized in that: The top seat (2) is provided with a sealing cover (1), which is detachably connected to the top seat (2) by a thread; the seal is provided with an air nozzle (5) for connecting an external negative pressure air pump.

6. The buried pipe for soft soil foundation reinforcement according to claim 1, characterized in that: It also includes a jacking component (4), which is used to insert into the inside of the pipe body (3) to push the outside of the anchor body (9) into the soil. It includes a jacking rod (41) and a jacking block (42). The bottom of the jacking rod (41) is fixed with a jacking block (42). The diameter of the jacking rod (41) is smaller than the diameter of the jacking block (42). The lower end of the jacking block (42) is a conical structure, and the upper end diameter is smaller than the diameter of the pipe body (3). The overall length of the jacking component (4) is greater than the overall length of the pipe body (3).

7. The buried pipe for soft soil foundation reinforcement according to claim 6, characterized in that: The bottom of the tube (3) is fixed with a rigid cone head (31) with a cone-shaped structure, and the cone head (31) has a groove (32) inside that is adapted to the lower end of the top block (42).

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