Geocell and geogrid combined slope protection structure

Abstract

The utility model relates to the field of slope protection, in particular to a geocell and geogrid combined slope protection structure which comprises a geogrid buried under a slope. The geocell is laid on the geogrid, and the geocell is connected with the geogrid through a connecting piece. According to the roadbed slope protection structure, the geocell is connected with the roadbed geogrid through the connecting piece, the slope protection and the reinforced layer of the roadbed form an integral structure, stress points of the geocell are increased, and the integral stability of the roadbed slope protection structure is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, and more specifically, to a slope protection structure that combines geocells and geogrids. Background Technology

[0002] With the development of the national economy and the demand for railway transportation, railway construction has extended to the Gobi Desert region. Due to the limitations of geographical and topographical conditions, the slope protection of railway subgrades in the Gobi Desert region generally adopts arched, grid, and other skeleton slope protection or frame beam slope protection. It mainly relies on the overall gravity of the skeleton slope protection and frame beam and the backfill material to form a stable structure on the surface of the subgrade slope. However, the construction period of skeleton slope protection and frame beam slope protection is long, and it consumes a lot of labor and materials, resulting in high construction costs. Utility Model Content

[0003] The purpose of this invention is to provide a slope protection structure combining geocells and geogrids to improve the aforementioned problems. To achieve this objective, the technical solution adopted by this invention is as follows:

[0004] This application provides a slope protection structure combining geocells and geogrids, comprising:

[0005] Geogrid, wherein the geogrid is embedded below the slope surface;

[0006] A geocell is laid on top of a geogrid and connected to the geogrid via connectors.

[0007] Optionally, the geocell includes a sand barrier layer and a sand-fixing layer, wherein the sand barrier layer is located above the ground surface and the sand-fixing layer is located below the ground surface.

[0008] Optionally, ventilation holes are provided on the sand barrier layer.

[0009] Optionally, the number of ventilation holes on the sand barrier layer gradually decreases along the direction from the ground surface to above the ground surface.

[0010] Optionally, the sand-fixing layer is provided with water-filtering holes.

[0011] Optionally, the slope protection structure includes a connector, which is disposed at the connection node of the geocell and inserted into the ground to restrict the movement of the geocell in the downhill direction.

[0012] Optionally, the connector is a U-shaped connector, which includes two pins, which are respectively inserted on both sides of the connection node.

[0013] Optionally, a first connecting hole is provided on the sand-fixing layer of the geocell, and the connector passes through the first connecting hole to connect the geogrid to the geocell.

[0014] Optionally, one end of the connector is connected to the plug-in member, and the other end is connected to the geogrid.

[0015] Optionally, the connector is a geotextile rope or a metal wire.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model uses geocells to replace skeleton slope protection and frame beam slope protection, which reduces construction costs. At the same time, the geocells are connected to the roadbed geogrid through connectors, forming an integral structure of slope protection and roadbed reinforcement layer, which increases the stress points of the geocells and effectively improves the overall stability of the roadbed slope protection structure.

[0018] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the slope protection structure combining geocells and geogrids in Embodiment 1 of this application;

[0021] Figure 2 This is a schematic diagram of the geocell structure in Embodiment 1 of this application;

[0022] Figure 3 This is a schematic diagram of the slope protection structure combining geocells and geogrids in Embodiment 2 of this application.

[0023] The markings in the diagram are: 1. Geocell; 2. Sand barrier layer; 2.1. Ventilation hole; 3. Sand fixation layer; 3.1. Water filter hole; 4. Insertion piece; 5. Connector; 6. Geogrid; 7. First connecting hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Skeleton slope protection and frame beam slope protection rely on the overall weight of the frame beams and auxiliary filler backfill to form a stable structure on the surface of the roadbed slope, with good overall stability, but high construction cost. Geocells have low construction cost, but due to their light weight, their stability is not as good as skeleton slope protection and frame beam slope protection. In order to reduce construction costs while ensuring slope stability, this application adopts geocells to be laid on the slope and connected to the geogrid in the roadbed to improve the stability of the geocells.

[0027] like Figure 1 As shown, this application provides a slope protection structure combining geocells and geogrids, comprising:

[0028] Geogrid 6, wherein the geogrid 6 is embedded below the slope surface;

[0029] Geocell 1 is laid on top of geogrid 6 and is connected to geogrid 6 by connector 5.

[0030] Geocell 1 and the underlying geogrid 6 are parallel to each other, and the connection points between them can be evenly distributed. For example, a connection point can be set every 3m along the length and width of geocell 1, that is, each connector 5 is spaced 3m apart. The geogrid 6 is buried in the roadbed and mainly serves to stabilize the foundation. It is covered with multiple layers of sand and is repeatedly compacted, so the geogrid 6 is very stable. However, the geocell 1 is laid near the ground surface and is at risk of loosening and sliding after long-term use. Therefore, this application connects the geocell 1 to the underlying geogrid 6 so that when the geocell 1 has a tendency to slide, it can be subjected to the tensile force of the geogrid 6, thereby improving the overall stability of the roadbed slope protection structure.

[0031] See Figure 2 The geocell 1 is a semi-buried type, which includes a sand-fixing layer 3 and a sand barrier layer 2. The sand-fixing layer 3 is buried below the surface 1, and the sand barrier layer 2 is located above the surface.

[0032] Multiple ventilation holes 2.1 can be made on the sand barrier layer 2 to improve its wind-breaking capacity. The diameter of the ventilation holes 2.1 can be 8mm-15mm, with 10mm-12mm being more preferred. If the diameter is too small, the wind will not easily pass through, reducing the ventilation rate and failing to disperse and protect against wind and sand, leading to the failure of the entire protection system. If the diameter is too large, it will reduce the sand-fixing effect and will not effectively trap sand in the geocell 1 to reduce wind and sand.

[0033] Preferably, the distribution of ventilation holes 2.1 on the sand barrier layer 2 gradually decreases from the surface upwards. Because the sand content decreases as the wind carries sand upwards, while the wind speed increases, the ventilation holes 2.1 are designed to be more densely packed closer to the surface. This effectively controls the amount of sand passing through, ensuring that the sand is evenly contained within each cell, preventing it from accumulating at the edges of the geocell 1. This effectively improves the overall sand-blocking and sand-fixing capacity of the entire geocell 1, allowing the entire geocell 1 area to store more sand, thus extending the overall service life of the geocell 1 and preventing large amounts of sand from being blown onto the road surface.

[0034] In addition, multiple filter holes 3.1 can be opened on the sand-fixing layer 3. The filter holes 3.1 are multi-layer linear micropores with a pore size of 1mm-6mm. They can quickly filter water under immersion conditions. The multi-layer linear micropores can prevent the fine-particle filler in desert areas from being washed away, thus playing the role of filtering water and fixing sand.

[0035] The geocell 1 can be fixed to the slope by means of a connector 4. The connector 4 is set at the connection node of the geocell 1 and inserted into the ground to restrict the movement of the geocell 1 downhill. The connector 4 is, for example, U-shaped, and the U-shaped connector 4 includes two connector legs, which are respectively inserted on both sides of the connection node of the geocell 1.

[0036] Geocell 1 can be made of high molecular composite polymers, such as polypropylene, polyethylene and other composite high molecular polymers, which have the advantages of good flexibility, high tensile strength and corrosion resistance.

[0037] Specifically, to connect the geocell 1 and the geogrid 6, a first connecting hole 7 can be made in the sand-fixing layer 3 of the geocell 1, and a connector 5 passes through the first connecting hole 7 to connect the geogrid 6 to the geocell 1. Figure 1 As shown, the connector 5 can be passed through the first connecting hole 7 and the geogrid 6 in a "Z" shape, thereby connecting the geogrid 6 to the geocell 1. The connector 5 can be made of georope, metal wire, or various clips.

[0038] During construction, the geogrid 6 can be laid first, and one end of the connector 5 can be tied and fixed to the geogrid 6. Backfill the geogrid 6 with the current area's fill material, such as gravel or sand, ensuring that the connector 5 protrudes above the ground surface during backfilling. Then, compact the geogrid 6 to stabilize it on the foundation. Next, lay the geocell 1 on the ground. After laying, connect the upper end of the exposed connector 5 to the geocell 1 to achieve connection and fixation between the geogrid 6 and the geocell 1. Finally, fill the sand-fixing layer 3 of the geocell 1 with fill material, such as gravel or sand.

[0039] In this application, the geocell 1 and the geogrid 6 are connected by the connector 5 to form a stable whole. The surface geocell 1 is bound by the geogrid 6 and will not slide, which greatly improves the stability of the foundation. At the same time, the geogrid 6 is protected by the geocell 1 under the cover of the geocell 1, which improves its service life.

[0040] Example 2

[0041] This embodiment focuses on its differences from Embodiment 1, while the similarities will not be repeated.

[0042] In Example 1, a method of setting a first connecting hole 7 on the geocell 1 was adopted. On the one hand, this method requires drilling the geocell 1, which increases the processing and production complexity of the geocell 1; on the other hand, after the connector 5 passes through the first connecting hole 7, the first connecting hole 7 will be subjected to a large tensile force. After a period of use, the first connecting hole 7 will be damaged, making it impossible for the geocell 1 and the geogrid 6 to be stably connected.

[0043] See Figure 3 To address the aforementioned issues, in this embodiment, one end of the connector 5 is connected to the plug-in 4, and the other end is connected to the geogrid 6. That is, the connector 5 is not connected to the body of the geocell 1, and the tensile force will not damage the geocell 1.

[0044] Specifically, a second connecting hole or barb can be provided on the connector 4. Taking the second connecting hole as an example, the connector 5 passes through the second connecting hole, connecting the connector 4 on the geocell 1 to the geogrid 6. The connector 4 is generally made of metal. This method eliminates the need for additional drilling of the geocell 1, and the U-shaped metal connector 4 itself can withstand significant tensile force. By connecting the geocell 1 to the connector 4 using the connector 5, the connector 4 will not break, ensuring a long-term stable connection between the geocell 1 and the geogrid 6.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A slope protection structure combining a geocell with a geogrid, characterized in that, include: Geogrid (6), said geogrid (6) is buried under the slope; Geocell (1) is laid on top of geogrid (6) and connected to geogrid (6) by connector (5).

2. The geocell and geogrid integrated slope protection structure according to claim 1, wherein, The geocell (1) includes a sand barrier layer (2) and a sand-fixing layer (3), wherein the sand barrier layer (2) is located above the ground surface and the sand-fixing layer (3) is located below the ground surface.

3. The geocell and geogrid integrated slope protection structure according to claim 2, wherein, Ventilation holes (2.1) are provided on the sand barrier layer (2).

4. The slope protection structure combining geocells and geogrids according to claim 3, characterized in that, Along the direction from the ground surface to above the ground surface, the number of ventilation holes on the sand barrier layer (2) gradually decreases.

5. The geocell and geogrid integrated slope protection structure according to claim 2, wherein, The sand-fixing layer (3) has filter holes (3.1).

6. The geocell and geogrid integrated slope protection structure according to claim 1, wherein, The slope protection structure includes a connector (4), which is located at the connection node of the geocell (1) and inserted into the ground to restrict the movement of the geocell (1) downhill.

7. The geocell and geogrid integrated slope protection structure according to claim 6, wherein, The connector (4) is a U-shaped connector, which includes two pins, which are respectively inserted on both sides of the connection node.

8. The geocell and geogrid integrated slope protection structure according to claim 2, wherein, A first connecting hole (7) is provided on the sand-fixing layer (3) of the geocell (1). The connector (5) passes through the first connecting hole (7) to connect the geogrid (6) to the geocell (1).

9. The geocell and geogrid integrated slope protection structure according to any one of claims 6 or 7, wherein, One end of the connector (5) is connected to the plug (4), and the other end is connected to the geogrid (6).

10. The geocell and geogrid integrated slope protection structure according to claim 1, wherein, The connector (5) is a georope or a metal wire.

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