Drainage type three-dimensional geogrid

Abstract

The utility model discloses a drainage type three-dimensional geogrid, which belongs to the technical field of reinforced soil and comprises longitudinal rib belts and transverse rib belts, the transverse rib belts are arranged at the tops of the longitudinal rib belts, a plurality of longitudinal rib belts and a plurality of transverse rib belts are perpendicular to each other to form a grid shape, and each longitudinal rib belt comprises a plurality of drainage hoses and tensile fiber bundles. The drainage hose and the tensile fiber bundle are arranged side by side, the surfaces of the drainage hose and the tensile fiber bundle are coated with PVC protective layers, the transverse rib belt comprises a bottom plate and a vertical plate, the bottom of the bottom plate is fixedly connected with the top of the longitudinal rib belt, the vertical plate is located in the middle of the top of the bottom plate, and the bottom plate is perpendicular to the vertical plate; the transverse rib belts are large in height and high in deformation resistance, the interaction depth of the rib belts and the soil body can be increased, the section strength between the rib materials and the soil body is effectively improved, and therefore the friction resistance is improved, the rib material consumption in the project is reduced, the project manufacturing cost is reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reinforced soil, in particular to a drainage type three-dimensional geogrid. Background Art

[0002] Reinforced soil technology refers to laying reinforcement materials in layers within the soil. Through the interaction between the soil and the reinforcement materials, the strength and integrity of the geotechnical structure can be effectively improved. It is often used to construct reinforced earth embankments, reinforced earth retaining walls, and reinforced soil foundations.

[0003] The reinforcement materials in the existing reinforced soil technology mainly include three types: strip geotextiles, mesh geogrids and flat geotextiles. The thickness of the reinforcement materials is relatively small and they are solid structures. When the geotextiles and geotextiles are buried in the soil, they mainly rely on the friction between the surface of the geotextiles and geotextiles and the soil to play the role of reinforcement and anti-pullout. When the geogrid is buried in the soil, in addition to the friction between the surface of the geogrid and the soil, the transverse ribs of the geogrid will also have friction with the soil. However, due to the small thickness of the transverse ribs, The friction effect that can be mobilized is also small; as a result, when the existing geobelts, geotextiles, and geogrids are used for reinforcement, the amount of reinforcement materials used is large and the cost is high; more importantly, reinforced earth structures are open-air projects and will be affected by rainwater intrusion. When rainwater enters the reinforced body, if it cannot be discharged in time, the weight of the soil will increase and the strength will soften, causing the stability of the structure to decrease. The existing geobelts, geotextiles, and geogrids only have a reinforcement function and do not have a drainage function, and cannot use reinforcement materials to drain water.

[0004] Therefore, a drainage three-dimensional geogrid is proposed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a drainage type three-dimensional geogrid, which increases the friction resistance of the geogrid, reduces the amount of reinforcement material, thereby reducing costs, and can drain soil water to ensure the strength of the construction location, which is conducive to improving the practicability of the device.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a drainage type three-dimensional geogrid, including longitudinal ribs and transverse ribs, the transverse ribs are fixedly installed on the top of the longitudinal ribs, and multiple parallel longitudinal ribs and multiple parallel transverse ribs are perpendicular to each other to form a grid shape, the longitudinal ribs include a number of drainage hoses and tensile fiber bundles, the drainage hoses and tensile fiber bundles are arranged side by side, and the surfaces of the drainage hoses and tensile fiber bundles are covered with a PVC protective layer, the transverse ribs include an integrally formed bottom plate and a vertical plate, the bottom of the bottom plate is fixedly connected to the top of the longitudinal ribs, the vertical plate is located in the middle of the top of the bottom plate, and the bottom plate and the vertical plate are perpendicular to each other.

[0007] Preferably, a plurality of equally spaced seepage holes are provided at the top of the longitudinal rib band above the drainage hose, and the seepage holes are connected to the interior of the drainage hose.

[0008] Preferably, a plurality of equidistantly distributed supporting ribs are fixedly installed on both sides of the top of the bottom plate along the length direction, and the supporting ribs are fixedly connected to the vertical plates.

[0009] Preferably, the drainage hose is a plastic hose, and its inner diameter is 2-10 mm.

[0010] Preferably, the diameter of the water seepage holes is less than 1 mm, and the distance between adjacent water seepage holes is less than 5 mm.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] 1. The height of the transverse reinforcement belts and nodes of the geogrid is large and has strong deformation resistance, which can increase the interaction depth between the reinforcement belts and the soil, effectively improve the interface strength between the reinforcement and the soil, thereby increasing the interface friction resistance, reducing the amount of reinforcement in the project, and reducing the project cost.

[0013] 2. The geogrid is connected to the drainage hose through the seepage holes, so that the free water in the soil can be discharged to the outside of the reinforced soil project, reducing the moisture content of the soil, improving the stability of the project, and helping to improve the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a drainage type three-dimensional geogrid in an embodiment;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of a longitudinal rib belt of a drainage type three-dimensional geogrid in an embodiment;

[0016] Figure 3 It is a schematic diagram of the structure of a transverse rib belt of a drainage type three-dimensional geogrid in an embodiment;

[0017] Among them: 1. longitudinal ribs; 11. drainage hose; 12. tensile fiber bundle; 13. PVC protective layer; 14. seepage holes; 2. transverse ribs; 21. bottom plate; 22. vertical plate; 23. supporting ribs. DETAILED DESCRIPTION

[0018] The following is attached to the instruction manual Figure 1-3 , the technical solution of the utility model is explained through specific embodiments.

[0019] Embodiment:

[0020] like Figure 1As shown, the utility model provides a drainage type three-dimensional geogrid, including a longitudinal rib 1 and a transverse rib 2. The transverse rib 2 is fixedly installed on the top of the longitudinal rib 1. Multiple parallel longitudinal ribs 1 and multiple parallel transverse ribs 2 are perpendicular to each other to form a grid shape.

[0021] like Figure 2 As shown, the longitudinal rib belt 1 includes a plurality of drainage hoses 11 and tensile fiber bundles 12, which are arranged side by side. The surfaces of the drainage hoses 11 and the tensile fiber bundles 12 are covered with a PVC protective layer 13. A plurality of equally spaced seepage holes 14 are provided at the top of the longitudinal rib belt 1 above the drainage hose 11, and the seepage holes 14 are connected to the inside of the drainage hose 11.

[0022] like Figure 3 As shown, the transverse rib 2 includes an integrally formed bottom plate 21 and a vertical plate 22. The bottom of the bottom plate 21 is fixedly connected to the top of the longitudinal rib 1. The vertical plate 22 is located in the middle of the top of the bottom plate 21. The bottom plate 21 and the vertical plate 22 are perpendicular to each other. A number of equidistantly distributed supporting ribs 23 are fixedly installed on both sides of the top of the bottom plate 21 along the length direction. The supporting ribs 23 are fixedly connected to the vertical plates 22.

[0023] Combination Figure 1-3 The drainage hose 11 is a plastic hose with an inner diameter of 2-10 mm, the diameter of the water seepage holes 14 is less than 1 mm, and the distance between adjacent water seepage holes 14 is less than 5 mm.

[0024] Working steps: Taking the reinforced embankment as an example, first, level and compact the foundation, determine the embankment realization position, and then lay the assembled geogrid on the slope side of the embankment, so that the longitudinal reinforcement belt 1 of the geogrid is perpendicular to the axis of the reinforced embankment, and one end of the geogrid is flush with the embankment slope line. Straighten the geogrid to make it close to the foundation, backfill and compact the fill on the geogrid, and repeat the above steps to complete the construction of the reinforced embankment.

[0025] Working principle: When the embankment slope is deformed, a relative displacement will occur between the embankment fill and the geogrid. The geogrid is pressed into the embankment, and frictional resistance is generated between the two, which limits the displacement of the soil and ensures the stability of the slope. The structure of the bottom plate 21 and the vertical plate 22 makes the transverse reinforcement belt 2 a three-dimensional structure, which can have a better interaction with the soil in the height direction of the geogrid and can generate greater frictional resistance. When water infiltrates into the embankment due to continuous rainfall, mountain seepage, etc., the water enters the drainage hose 11 through the seepage holes 14 on the longitudinal reinforcement belt 1, and seeps out from the slope along the channel formed by the drainage hose 11, thereby reducing the moisture content of the soil inside the embankment, avoiding the increase in soil weight and softening of strength, and ensuring the stability of the slope.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage three-dimensional geogrid, characterized in that: The invention comprises a longitudinal ribbed belt (1) and a transverse ribbed belt (2), wherein the transverse ribbed belt (2) is fixedly mounted on the top of the longitudinal ribbed belt (1), and a plurality of parallel longitudinal ribbed belts (1) and a plurality of parallel transverse ribbed belts (2) are perpendicular to each other to form a grid shape, the longitudinal ribbed belt (1) comprises a plurality of drainage hoses (11) and tensile fiber bundles (12), the drainage hoses (11) and tensile fiber bundles (12) are arranged side by side, and the surfaces of the drainage hoses (11) and the tensile fiber bundles (12) are coated with a PVC protective layer (13), the transverse ribbed belt (2) comprises an integrally formed bottom plate (21) and a vertical plate (22), the bottom of the bottom plate (21) is fixedly connected to the top of the longitudinal ribbed belt (1), the vertical plate (22) is located in the middle of the top of the bottom plate (21), and the bottom plate (21) and the vertical plate (22) are perpendicular to each other.

2. A drainage three-dimensional geogrid according to claim 1, characterized in that: A plurality of equally spaced seepage holes (14) are provided at the top of the longitudinal rib band (1) located above the drainage hose (11), and the seepage holes (14) are connected to the interior of the drainage hose (11).

3. The drainage three-dimensional geogrid according to claim 1, characterized in that: A plurality of equidistantly distributed supporting ribs (23) are fixedly mounted on both sides of the top of the bottom plate (21) along the length direction, and the supporting ribs (23) are fixedly connected to the vertical plate (22).

4. The drainage three-dimensional geogrid according to claim 1, characterized in that: The drainage hose (11) is a plastic hose, and its inner diameter is 2-10 mm.

5. The drainage three-dimensional geogrid according to claim 2, characterized in that: The diameter of the water seepage holes (14) is less than 1 mm, and the distance between adjacent water seepage holes (14) is less than 5 mm.

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