Socket type inverted filter drainage structure for backfill soil at back of retaining wall

Abstract

The utility model relates to the technical field of retaining wall drainage, in particular to a retaining wall back backfill soil socket type inverted filter drainage structure which comprises an inverted filter drainage structure body, wall back backfill soil and a concrete retaining wall. The anti-filtration drainage structure body is installed between wall back backfill soil and a concrete retaining wall, a drainage flow guide pipe is arranged on the anti-filtration drainage structure body, a flexible corrugated pipe is integrally arranged at the end of the drainage flow guide pipe, a pipeline connector is further arranged at the end of the flexible corrugated pipe, and the pipeline connector is sleeved with a flange plate. According to the retaining wall back backfill soil socket type inverted filter drainage structure, the W-shaped drainage pad is laid on the concrete retaining wall to form an inverted filter layer, use of a hardware protection shell is reduced, meanwhile, the connecting piece composed of the flexible drainage pipe and the flange plate is additionally arranged between the W-shaped drainage pad and the embedded drainage pipe, flexible adjustment can be achieved according to the angle between the wall face and the drainage pipe, and the drainage effect is good. And construction is easier.

Description

Technical Field

[0001] This utility model relates to the field of retaining wall drainage technology, specifically to a retaining wall backfill soil socket-type reverse filter drainage structure. Background Technology

[0002] Retaining walls are structures primarily used to support soil and prevent landslides or erosion. They are widely used in road construction, land development, and landscape design to ensure slope stability and protect the surrounding environment. After the retaining wall is constructed, appropriate materials and techniques are used for backfilling, which requires good drainage to prevent water accumulation and increased pressure, thus ensuring the stability and service life of the retaining wall.

[0003] The existing publication number CN216551887U discloses a W-type PVC drainage pipe that avoids the influence of backfill soil. By replacing geotextile with a W-type Mac drainage pad, the cost is reduced. The outer side of the W-type Mac drainage pad is equipped with a hardware protective shell to prevent backfill soil from affecting the W-type Mac drainage pad and the drainage pipe. This helps to reduce costs, protect the drainage pipe, and is suitable for large-scale promotion. However, the hardware protective shell may still be affected by the pressure of the backfill soil. At the same time, the use of interlocking grooves and fixing blocks to connect with the drainage pipe does not allow for flexible adjustment of the angle between the W-type drainage pad and the drainage pipe according to the slope of the wall. Utility Model Content

[0004] The purpose of this utility model is to provide a socket-type reverse filter drainage structure for backfill soil behind retaining walls, in order to solve the problems mentioned in the background art. Currently, the drainage structure for backfill soil behind retaining walls on the market, which uses a hardware protective shell, may still be affected by the backfill soil. At the same time, the use of locking grooves and fixing blocks to connect with the drainage pipe cannot flexibly adjust the angle of the W-shaped drainage pad and the drainage pipe according to the slope of the wall.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a retaining wall backfill soil-insertion type reverse filter drainage structure, comprising a reverse filter drainage structure body, backfill soil, and a concrete retaining wall. The backfill soil is located on the back of the concrete retaining wall, and the reverse filter drainage structure body is installed between the backfill soil and the concrete retaining wall. The reverse filter drainage structure body is provided with a drainage guide pipe, and the end of the drainage guide pipe is integrally provided with a flexible corrugated pipe. The end of the flexible corrugated pipe is also provided with a pipe interface. A flange is fitted outside the pipe interface, and protruding nails are integrally provided on both sides of the flange. A pre-embedded drainage pipe is embedded in the concrete retaining wall, and the drainage guide pipe is inserted into the pre-embedded drainage pipe. The reverse filter drainage structure body is also provided with a W-shaped drainage pad, and the W-shaped drainage pad is laid on the concrete retaining wall and connected to the flange.

[0006] Preferably, the wall thickness of the drainage guide pipe is 2mm, and the drainage guide pipe is tightly inserted into the pre-embedded drainage pipe, and the flexible corrugated pipe is also located inside the pre-embedded drainage pipe.

[0007] Preferably, the side length of the W-shaped drainage pad is 300mm-500mm, and the W-shaped drainage pad is provided with a first W-shaped drainage core material and a second W-shaped drainage core material, and the first W-shaped drainage core material and the second W-shaped drainage core material are covered with polyester non-woven geotextile.

[0008] Preferably, the outer diameter of the pre-embedded drainage pipe is 50mm-100mm, and the wall thickness of the pre-embedded drainage pipe is 2mm.

[0009] Preferably, the flange is located between the first W-shaped drainage core material and the second W-shaped drainage core material, and the flange thickness is 1.5mm.

[0010] Preferably, the protruding studs are evenly distributed on the circumference of the flange, and the protruding studs extend into the first W-shaped drainage core material and the second W-shaped drainage core material, and the flange and the W-shaped drainage pad are fixed by the protruding studs.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This retaining wall backfill soil-insertion-type reverse filter drainage structure forms a reverse filter layer by laying a W-shaped drainage pad on the concrete retaining wall, reducing the use of hardware protective shells. Simultaneously, a connector consisting of a flexible drainage pipe and a flange is added between the W-shaped drainage pad and the pre-embedded drainage pipe, which can be flexibly adjusted according to the angle between the wall surface and the drainage pipe, making construction easier. This retaining wall backfill soil-insertion-type reverse filter drainage structure places the flange between the first and second W-shaped drainage core materials, ensuring that the drainage guide pipe port is securely placed within the W-shaped drainage pad, thereby smoothly guiding water into the pre-embedded drainage pipe. The W-shaped drainage pad can effectively filter the soil layer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the drainage guide pipe structure of the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0013] Figure 2 This is a side view of the retaining wall backfill soil socket-type reverse filter drainage structure of this utility model;

[0014] Figure 3 This utility model relates to a retaining wall backfill soil socket-type reverse filter drainage structure. Figure 2 Enlarged structural diagram at point A in the middle;

[0015] Figure 4 This is a schematic diagram of the connection structure between the drainage guide pipe and the pre-embedded drainage pipe in the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the back structure of the W-shaped drainage pad of the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0017] Figure 6 This is a schematic diagram of the front structure of the W-shaped drainage pad of the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0018] Figure 7 This is a schematic diagram of the flange structure of the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0019] Figure 8 This is a schematic diagram of the connection structure between the flange and the drainage guide pipe of the retaining wall backfill soil socket reverse filter drainage structure of this utility model.

[0020] In the diagram: 1. Main body of the reverse filter drainage structure; 2. Drainage guide pipe; 201. Flexible corrugated pipe; 202. Pipe interface; 3. Backfill soil behind the wall; 4. W-type drainage pad; 401. First W-type drainage core material; 402. Second W-type drainage core material; 5. Concrete retaining wall; 501. Embedded drainage pipe; 6. Flange; 601. Protruding nail. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-8This utility model provides a technical solution: a retaining wall backfill soil socket-type reverse filter drainage structure, including a reverse filter drainage structure body 1, backfill soil 3, and a concrete retaining wall 5. The backfill soil 3 is located on the back of the concrete retaining wall 5, and the reverse filter drainage structure body 1 is installed between the backfill soil 3 and the concrete retaining wall 5. The reverse filter drainage structure body 1 is provided with a drainage guide pipe 2, and the end of the drainage guide pipe 2 is integrally provided with a flexible corrugated pipe 201. The flexible corrugated pipe 201 makes the angle between the straight section of the drainage guide pipe 2 and the flange 6 adjustable, which can be flexibly adjusted according to the angle between the concrete retaining wall 5 and the pre-embedded drainage pipe 501, ensuring that the W-shaped drainage pad 4 is relatively stable through the drainage guide pipe 2 and the pre-embedded drainage pipe 501. The thickness is 2mm, and the drainage guide pipe 2 is tightly inserted into the pre-embedded drainage pipe 501. The flexible corrugated pipe 201 is also located inside the pre-embedded drainage pipe 501. This structure can connect the W-shaped drainage pad 4 and the pre-embedded drainage pipe 501 through the drainage guide pipe 2, so that the drainage from the backfill soil 3 behind the wall can be filtered by the W-shaped drainage pad 4 and enter the pre-embedded drainage pipe 501 to achieve drainage treatment. The end of the flexible corrugated pipe 201 is also provided with a pipe interface 202. The pipe interface 202 is fitted with a flange 6, and the flange 6 is integrally provided with protruding nails 601 on both sides. The pre-embedded drainage pipe 501 is pre-embedded in the concrete retaining wall 5, and the drainage guide pipe 2 is inserted into the pre-embedded drainage pipe 501. The outer diameter of the pre-embedded drainage pipe 501 can be 50 / 75 / 1. The pre-embedded drainage pipe 501 has a wall thickness of 2mm. This structure, by pre-embedding the pre-embedded drainage pipe 501 within the concrete retaining wall 5, allows for smooth drainage hole walls, reducing drainage resistance. The diameter of the drainage guide pipe 2 changes with the pre-embedded drainage pipe 501, ensuring a secure connection between the drainage guide pipe 2 and the pre-embedded drainage pipe 501. The size of the W-shaped drainage pad 4 also increases with the increase of the pre-embedded drainage pipe 501, ensuring a reverse filtration effect. The main body 1 of the reverse filtration drainage structure is also equipped with a W-shaped drainage pad 4. The size of the W-shaped drainage pad 4 can be 300mm*300mm or 500mm*500mm, and the W-shaped drainage pad 4 contains a first W-shaped drainage core material 401 and a second W-shaped drainage core material 402. The core material 401 and the second W-shaped drainage core material 402 are covered with polyester non-woven geotextile. This structure allows the W-shaped drainage pad to seal the pre-buried drainage pipe 501, ensuring that the water flowing out of the pre-buried drainage pipe 501 is filtered. The W-shaped design of the first W-shaped drainage core material 401 and the second W-shaped drainage core material 402 not only increases the surface area and improves drainage efficiency, but also provides better support and stability. The polyester non-woven geotextile allows water to pass through and protects the core material. The W-shaped drainage pad 4 is laid on the concrete retaining wall 5 and is connected to the flange 6, which is located between the first W-shaped drainage core material 401 and the second W-shaped drainage core material 402.Furthermore, the flange 6 is 1.5mm thick. This structure allows for a stable connection between the flange 6 and the W-type drainage pad 4. The W-type drainage pad 4 is directly laid on top of the flange 6 to form a filter layer, reducing the need for a hardware protective shell. Drainage remains unaffected. Spikes 601 are evenly distributed around the circumference of the flange 6, extending into the first W-type drainage core material 401 and the second W-type drainage core material 402. The flange 6 and the W-type drainage pad 4 are fixed together by the spikes 601. This structure ensures a secure connection between the flange 6 and the first W-type drainage core material 401 and the second W-type drainage core material 402, guaranteeing the stability of the positioning between the flange 6 and the W-type drainage pad 4. Simultaneously, water that has passed through the filter and entered between the first W-type drainage core material 401 and the second W-type drainage core material 402 can be quickly discharged through the drainage guide pipe 2.

[0023] Working principle: When using the retaining wall backfill soil socket-type reverse filter drainage structure, firstly, during the construction of the concrete retaining wall 5, the pre-embedded drainage pipe 501 is embedded in the concrete retaining wall 5 to form a drainage channel. When backfilling the backfill soil 3, the main body 1 of the reverse filter drainage structure is installed on the concrete retaining wall 5. A drainage guide pipe 2 and a W-type drainage pad 4 that match the size of the pre-embedded drainage pipe 501 are selected. First, the flange 6 is put on the pipe interface 202 of the drainage guide pipe 2. Then, the flange 6 is inserted into the first W-type drainage core material 401 and the second W-type drainage core material 402 through the protruding nail 601 inside the W-type drainage pad 4 for fixation. Then, the drainage guide pipe 2 is inserted into the pre-embedded drainage pipe 501. The flexible corrugated pipe 201 allows the angle between the drainage guide pipe 2 and the flange 6 to be flexibly adjusted, which can adapt to various angles of the pre-embedded drainage pipe 501, facilitating construction and thus completing a series of tasks.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A retaining wall backfill soil-insertion type reverse filter drainage structure, comprising a reverse filter drainage structure body (1), backfill soil (3) and a concrete retaining wall (5), wherein the backfill soil (3) is located on the back of the concrete retaining wall (5), and the reverse filter drainage structure body (1) is installed between the backfill soil (3) and the concrete retaining wall (5), characterized in that: The main body (1) of the reverse filter drainage structure is provided with a drainage guide pipe (2), and the end of the drainage guide pipe (2) is integrally provided with a flexible corrugated pipe (201), and the end of the flexible corrugated pipe (201) is also provided with a pipe interface (202). The pipe interface (202) is fitted with a flange (6), and the flange (6) is integrally provided with protruding nails (601) on both sides. The concrete retaining wall (5) is pre-embedded with a pre-embedded drainage pipe (501), and the drainage guide pipe (2) is inserted into the pre-embedded drainage pipe (501). The main body (1) of the reverse filter drainage structure is also provided with a W-shaped drainage pad (4), and the W-shaped drainage pad (4) is laid on the concrete retaining wall (5), and the W-shaped drainage pad (4) is connected to the flange (6).

2. The retaining wall backfill soil socket-type reverse filter drainage structure according to claim 1, characterized in that: The wall thickness of the drainage guide pipe (2) is 2mm, and the drainage guide pipe (2) is tightly inserted into the pre-embedded drainage pipe (501), and the flexible corrugated pipe (201) is also located inside the pre-embedded drainage pipe (501).

3. The retaining wall backfill soil socket-type reverse filter drainage structure according to claim 1, characterized in that: The side length of the W-type drainage pad (4) is 300mm-500mm, and the W-type drainage pad (4) is provided with a first W-type drainage core material (401) and a second W-type drainage core material (402), and the first W-type drainage core material (401) and the second W-type drainage core material (402) are covered with polyester non-woven geotextile.

4. The retaining wall backfill soil socket-type reverse filter drainage structure according to claim 1, characterized in that: The outer diameter of the pre-embedded drainage pipe (501) is 50mm-100mm, and the wall thickness of the pre-embedded drainage pipe (501) is 2mm.

5. The retaining wall backfill soil socket-type reverse filter drainage structure according to claim 1, characterized in that: The flange (6) is located between the first W-type drainage core material (401) and the second W-type drainage core material (402), and the flange (6) has a thickness of 1.5 mm.

6. The retaining wall backfill soil socket-type reverse filter drainage structure according to claim 1, characterized in that: The protruding nails (601) are evenly distributed on the circumference of the flange (6), and the protruding nails (601) extend into the first W-shaped drainage core material (401) and the second W-shaped drainage core material (402), and the flange (6) and the W-shaped drainage pad (4) are fixed by the protruding nails (601).

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