Improved wicking geotextile low roadbed structure

Abstract

The utility model discloses an improved wicking geotextile low roadbed structure, and particularly relates to the technical field of fabric low roadbed, the roadbed structure comprises a roadbed bottom layer, an anti-seepage soil engineering layer, a reinforcing layer and a pavement surface layer, the anti-seepage soil engineering layer is laid on the top of the roadbed bottom layer, the reinforcing layer is laid between the anti-seepage soil engineering layer and the top of the roadbed bottom layer, and the pavement surface layer is laid between the anti-seepage soil engineering layer and the top of the roadbed bottom layer. The pavement surface layer is laid on the top of the anti-seepage geotechnical layer, the anti-seepage geotechnical layer comprises multiple layers of anti-seepage geotechnical cloth, and the multiple layers of anti-seepage geotechnical cloth are fixedly sewn together through connecting lines. By improving the wicking capacity of the geotextile and combining the multiple design of the reinforcing layer and the inverted filter layer, the wicking efficiency and the drainage efficiency can be improved, so that the aim of rapidly draining water in the roadbed is achieved, the influence of water retention on the roadbed is reduced, the structural stability of the roadbed can be greatly improved, and the construction cost is reduced. Therefore, the requirement for the roadbed height is lowered, the filling amount is reduced, and the effects of saving cost and enhancing environment friendliness are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fabric low subgrade, more specifically to an improved wicking geotextile low subgrade structure. BACKGROUND

[0002] Most of the existing subgrade drainage systems use traditional water seepage pipes or gravel layer structures. Although these drainage methods can to some extent lead out the moisture in the subgrade, their effectiveness is often limited by the complexity of installation, material durability, and maintenance difficulty. In addition, traditional drainage structures often show poor drainage or blockage when encountering complex terrain or high humidity environments, resulting in long-term wet and soft subgrade, which seriously affects the service life of roads or railways.

[0003] With the wide application of geotextile materials, wicking geotextile has gradually been applied in the field of subgrade drainage due to its excellent water seepage, drainage, and anti-seepage performance. For example, the prior art with publication number CN218203938U discloses a subgrade drainage and dredging structure. The utility model has the advantages that the anti-seepage geotextile layer can buffer the water flow, effectively reducing the impact of the water flow on the ground surface, and preventing landslides of the subgrade.

[0004] However, the existing geotextile still has limited wicking effect and needs to improve drainage efficiency, especially in rainy areas or complex terrain environments, where its drainage function is relatively limited. Therefore, it is necessary to develop an improved wicking geotextile subgrade structure to further improve its drainage effect and enhance the overall stability of the subgrade. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an improved wicking geotextile low subgrade structure to solve the problem of limited wicking effect and low drainage efficiency of traditional geotextile in the subgrade.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an improved wicking geotextile low subgrade structure, comprising a subgrade bottom layer, an anti-seepage geotextile layer, a reinforcing layer, and a road surface layer. The anti-seepage geotextile layer is laid on the top of the subgrade bottom layer. The reinforcing layer is laid between the anti-seepage geotextile layer and the top of the subgrade bottom layer. The road surface layer is laid on the top of the anti-seepage geotextile layer. The anti-seepage geotextile layer comprises multiple layers of anti-seepage geotextile cloth, which are fixed and stitched together by connecting lines. Each layer of anti-seepage geotextile cloth is woven by multiple nylon fibers through a warp knitting machine. Channels for drainage are formed on each nylon fiber by chemical corrosion. The road surface layer is provided with a filter layer on both sides of the outer wall.

[0007] In a preferred embodiment, the two filter layers each comprise a filter geotextile laid on top of the impermeable geotextile for filtering impurities of the pavement surface layer, which can ensure the smooth passage of water and into the drainage ditch.

[0008] In a preferred embodiment, the reinforcing layer comprises a geogrid laid on the bottom of the impermeable geotextile for improving the tensile and shear strength of the roadbed structure.

[0009] In a preferred embodiment, the bottom end of the impermeable geotextile, the bottom end of the geogrid and the top end of the filter geotextile are connected with a plurality of positioning rods, which are inserted into the roadbed bottom layer and the pavement surface layer for reinforcing the impermeable geotextile, the geogrid and the filter geotextile.

[0010] In a preferred embodiment, the top end of the two filter geotextiles is provided with a plurality of perforations one, the top end of the impermeable geotextile is provided with a plurality of perforations two on both sides, the bottom end of the positioning rod is sequentially inserted through the perforations one and the perforations two and is connected with the roadbed bottom layer for improving the use stability of the filter geotextile.

[0011] In a preferred embodiment, the bottom of the roadbed bottom layer is provided with a drainage ditch on both sides, the two ends of the impermeable geotextile and the two ends of the filter geotextile are located in the drainage ditch, after the water is quickly discharged through the impermeable geotextile, it is filtered through the filter layer and enters the drainage ditch, and finally is discharged from the roadbed, the whole drainage process is efficient and smooth, which can significantly reduce the problem of water accumulation in the roadbed and prevent the structure damage caused by long-term immersion.

[0012] The technical effects and advantages of the utility model are as follows: through improving the wicking capacity of the geotextile, combining the multiple design of the reinforcing layer and the filter layer, the wicking efficiency and the drainage efficiency can be improved, the water in the roadbed can be discharged more quickly, the influence of water retention on the roadbed is reduced, the structural stability of the roadbed is improved, the requirement for the height of the roadbed is reduced, the amount of filling soil is reduced, the cost is saved, and the environmental friendliness is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0014] Figure 1 It is the whole structure schematic view of the utility model;

[0015] Figure 2 It is the whole structure sectional view of the utility model;

[0016] Figure 3 It is the whole structure sectional view of the utility model;

[0017] Figure 4 It is the anti-seepage geotextile structure sectional view of the utility model;

[0018] Figure 5 It is the nylon fiber structure diagram of the utility model.

[0019] Fig. 1, subgrade bottom layer;2, anti-seepage geotextile layer;21, anti-seepage geotextile;22, connecting line;23, nylon fiber;24, channel;

[0020] 3, reinforcing layer;31, geogrid;4, pavement surface layer;5, filter layer;51, filter geotextile;6, positioning rod;7, perforation one;8, perforation two;9, drainage ditch. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] With reference to the drawings in the description Figures 1-5 The utility model provides a kind of improved wicking geotextile low subgrade structure, including subgrade bottom layer 1, anti-seepage geotextile layer 2, reinforcing layer 3 and pavement surface layer 4, the anti-seepage geotextile layer 2 is laid on subgrade bottom layer 1 top, the reinforcing layer 3 is laid between anti-seepage geotextile layer 2 and subgrade bottom layer 1 top, the pavement surface layer 4 is laid on anti-seepage geotextile layer 2 top, the anti-seepage geotextile layer 2 includes multiple anti-seepage geotextile 21, multiple anti-seepage geotextile 21 is fixed together by connecting line 22 sewing, each anti-seepage geotextile 21 is woven by multiple nylon fibers 23 by warp knitting machine, channel 24 for drainage is formed on each nylon fiber 23 by chemical corrosion, the pavement surface layer 4 both sides outer wall is laid with filter layer 5.

[0023] In this embodiment, the two filter layers 5 each include a filter geotextile 51 laid on top of the impermeable geotextile 21 for filtering impurities such as silt, particles, etc. on the roadbed, thereby reducing the roadbed structure drainage maintenance problems caused by clogging or contamination.

[0024] In this embodiment, the reinforcing layer 3 includes a geogrid 31 laid on the bottom of the impermeable geotextile 21. The use of high-strength geogrid 31 can effectively improve the tensile and compressive strength of the roadbed structure, so that the roadbed structure can maintain good structural stability when subjected to long-term heavy loads or extreme weather, avoiding road damage caused by roadbed settlement or sliding.

[0025] As shown in Figures 1-3 In order to prevent water accumulation on both sides of the roadbed, a drainage ditch 9 is also formed on both sides of the bottom of the roadbed bottom layer 1. The two ends of the impermeable geotextile 21 and the two ends of the filter geotextile 51 are located inside the drainage ditch 9. The use of the impermeable geotextile 21 and the filter geotextile 51 can guide rainwater to flow quickly into the drainage ditch 9, thereby improving the drainage performance of the roadbed structure.

[0026] In actual construction, the impermeable geotextile 21 is first laid on the top of the predetermined roadbed bottom layer 1, and a high-strength geogrid 31 is laid on the bottom of the impermeable geotextile 21. The geogrid 31 and the impermeable geotextile 21 form a more solid composite structure, which not only enhances the anti-deformation ability of the roadbed structure, but also ensures that the roadbed structure can maintain high tensile and shear strength when subjected to heavy loads over a long period of time. In addition, filter geotextile 51 is laid on both sides of the road surface layer 4. The use of filter geotextile 51 can filter out impurities such as silt and particles in the roadbed structure, while ensuring that water flows smoothly and enters the drainage channel 24. Moreover, the filter geotextile 51 has good durability and can withstand long-term water erosion without being easily damaged, thereby ensuring smooth and efficient drainage and reducing the risk of clogging of the roadbed structure drainage ditch 9, thereby prolonging the service life of the drainage ditch 9.

[0027] The above structure of the present embodiment can exhibit excellent drainage performance and stability in complex terrain and high-moisture environments. The multi-layer structure design ensures the improvement of the strength, durability and drainage efficiency of the roadbed, thereby improving the service life of the roadbed. It is particularly suitable for roadbed construction in humid and rainy areas or areas with high groundwater levels. Moreover, due to its excellent drainage performance, it can significantly reduce the height of the roadbed, reduce the occupied area, save costs and be very friendly to the environment.

[0028] The above structure of the present embodiment can exhibit excellent drainage performance and stability in complex terrain and high-moisture environments. The multi-layer structure design ensures the improvement of the strength, durability and drainage efficiency of the roadbed, thereby improving the service life of the roadbed. It is particularly suitable for roadbed construction in humid and rainy areas or areas with high groundwater levels. Moreover, due to its excellent drainage performance, it can significantly reduce the height of the roadbed, reduce the occupied area, save costs and be very friendly to the environment. Figure 3A plurality of positioning rods 6 are connected to the bottom end of the impermeable geotextile 21, the bottom end of the geogrid 31 and the top end of the filter geotextile 51, and are inserted into the roadbed bottom layer 1 and the road surface layer 4, for reinforcing the impermeable geotextile 21, the geogrid 31 and the filter geotextile 51.

[0029] In order to improve the connection firmness between the filter geotextile 51 and the impermeable geotextile 21, a plurality of perforations one 7 are formed at the top end of the filter geotextile 51, and a plurality of perforations two 8 are formed at both sides of the top end of the impermeable geotextile 21, and the bottom end of the positioning rod 6 penetrates the perforations one 7 and the perforations two 8 and is inserted into the roadbed bottom layer 1.

[0030] By arranging the plurality of positioning rods 6 at the bottom end of the impermeable geotextile 21, the bottom end of the geogrid 31 and the filter geotextile 51, the impermeable geotextile 21 and the geogrid 31 can be firmly fixed with the roadbed bottom layer 1 by the positioning rods 6 during the paving process, so that the impermeable geotextile 21 and the geogrid 31 are not offset and wrinkled by the concrete during the paving of the road surface, and the filter geotextile 51 is fixed with the road surface layer 4 by the positioning rods 6, so that the filter geotextile 51 is prevented from being separated from the impermeable geotextile 21 by rainwater.

[0031] Each of the embodiments in the specification is described in a related manner, and the same and similar parts between the embodiments can be referred to each other, and each of the embodiments mainly describes the difference from other embodiments.

[0032] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. An improved wicking geotextile low subgrade structure characterized by: The roadbed structure comprises a roadbed bottom layer (1), an anti-seepage geotextile layer (2), a reinforcing layer (3) and a road surface layer (4), the anti-seepage geotextile layer (2) is laid on the top of the roadbed bottom layer (1), the reinforcing layer (3) is laid between the anti-seepage geotextile layer (2) and the top of the roadbed bottom layer (1), and the road surface layer (4) is laid on the top of the anti-seepage geotextile layer (2); The anti-seepage geotextile layer (2) comprises a plurality of anti-seepage geotextile layers (21), the plurality of anti-seepage geotextile layers (21) are fixed and sewn together through connecting lines (22), each anti-seepage geotextile layer (21) is knitted by a plurality of nylon fibers (23) through a warp knitting machine, a drainage channel (24) is arranged on each nylon fiber (23), and outer walls on both sides of the road surface layer (4) are provided with anti-filtration layers (5).

2. A modified wicking geotextile low sub-grade structure according to claim 1, wherein: The two anti-filtration layers (5) each comprise a filter geotextile (51), and the filter geotextile (51) is laid on the top of the anti-seepage geotextile (21).

3. A modified wicking geotextile low sub-grade structure according to claim 2, wherein: The reinforcing layer (3) comprises a geogrid (31), and the geogrid (31) is laid on the bottom of the anti-seepage geotextile (21).

4. A modified wicking geotextile low sub-grade structure according to claim 3, wherein: The bottom end of the anti-seepage geotextile (21), the bottom end of the geogrid (31) and the top end of the filter geotextile (51) are connected with a plurality of positioning rods (6), and the plurality of positioning rods (6) are inserted into the roadbed bottom layer (1) and the road surface layer (4).

5. A modified wicking geotextile low sub-grade structure according to claim 4, wherein: The top end of each filter geotextile (51) is provided with a plurality of perforations (7), the top end of the anti-seepage geotextile (21) is provided with a plurality of perforations (8) on both sides, the number of the perforations (8) is same as that of the perforations (7), the bottom end of the positioning rod (6) penetrates the perforations (7) and the perforations (8) in sequence and is inserted into the roadbed bottom layer (1).

6. A modified wicking geotextile low sub-grade structure according to claim 2, wherein: Drainage ditches (9) are formed on both sides of the bottom of the roadbed bottom layer (1), and the anti-seepage geotextile (21) and the filter geotextile (51) are located in the drainage ditches (9).

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