Permeable pavement structure

Abstract

The utility model discloses a permeable pavement structure, relates to the technical field of roads, and aims to solve the problem that a permeable pavement is slow in water drainage. According to the technical scheme, the drainage structure is characterized by comprising a base layer, a gravel layer and an asphalt layer, a supporting layer and a drainage layer are sequentially arranged between the gravel layer and the asphalt layer from bottom to top, a plurality of grooves are formed in the drainage layer, the side edge of the drainage layer is connected with a drainage channel, and the grooves are communicated with the drainage channel. During rainfall, rainwater can infiltrate into the grooves of the drainage layer along the gaps of the asphalt layer, underground runoff is generated and flows into the drainage channel along the grooves to be collected and treated in a centralized manner, and the rainwater can flow on the surface of the asphalt layer and is guided into the drainage channel through the guide plate when infiltrating in time. The permeable pavement drains rain through surface runoff and underground runoff at the same time, so that rainwater can be drained in time, waterlogging of urban roads is relieved, and pollution caused by sewage back-flowing in the urban roads is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roads, and more specifically, to a water-permeable pavement structure. Background Art

[0002] In previous road designs, simple permeable asphalt pavement or permeable concrete pavement was generally used to allow rainwater to penetrate the pavement and enter the ground.

[0003] This type of road surface can retain moisture underground, but when encountering continuous rainfall or heavy rain, the road surface is prone to large amounts of water accumulation. The underground water is difficult to drain out quickly, causing rainwater to accumulate on the road surface, affecting the normal driving function of the road and causing road paralysis.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a permeable pavement structure, which has the advantage of quickly draining rainwater from the road surface.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a permeable pavement structure, including a base layer, a crushed stone layer and an asphalt layer, a support layer and a drainage layer are arranged between the crushed stone layer and the asphalt layer from bottom to top, a plurality of grooves are opened on the drainage layer, the side of the drainage layer is connected to the drainage channel, the grooves are connected to the drainage channel, guide plates are fixedly connected to both sides of the asphalt layer, and the side of the guide plate away from the asphalt layer is fixedly connected to the top surface of the drainage channel.

[0007] The utility model is further configured as follows: a plurality of water-permeable openings are provided on both sides of the asphalt layer, and the water-permeable openings are connected to the grooves.

[0008] The utility model is further configured as follows: a green space is fixedly connected to a side of the drainage channel, a top surface of the drainage channel and the green space are connected via a slope protection, and a height of the slope protection decreases toward a side close to the green space.

[0009] The utility model is further configured as follows: a concrete slab is fixedly connected to the outer side of the crushed stone layer, the concrete slab is inserted into the base layer, and the support layer is fixedly connected to the top of the concrete slab.

[0010] The utility model is further configured as follows: a plurality of through holes penetrating the support layer are provided on the drainage layer.

[0011] The utility model is further configured as follows: a geotextile is fixedly connected between the base layer and the gravel layer.

[0012] The utility model is further configured as follows: the asphalt layer includes a surface layer and an inner layer, the maximum particle size of the surface layer is 4mm-8mm, the maximum particle size of the inner layer is 11mm-16mm, the surface layer is fixedly connected to the top surface of the inner layer, the water permeable port penetrates the inner layer and the surface layer, and the inner layer abuts against the top surface of the drainage layer.

[0013] The utility model is further configured as follows: the thickness of the surface layer gradually decreases toward the two sides close to the drainage channel.

[0014] In summary, the utility model has the following beneficial effects:

[0015] During rain, rainwater can infiltrate into the grooves of the drainage layer through the gaps in the asphalt layer, generating underground runoff, and flow into the drainage channel along the grooves for centralized collection and treatment. When there is no time for rainwater to infiltrate, rainwater can flow on the surface of the asphalt layer, and be diverted into the drainage channel through the guide plate. The permeable pavement drains rainwater through both surface runoff and underground runoff, so that rainwater can be discharged in time, ensuring the normal use of the permeable pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] In the figure: 1. Base layer; 2. Gravel layer; 3. Asphalt layer; 4. Support layer; 5. Drainage layer; 6. Grooves; 7. Drainage channels; 8. Guide plates; 9. Water inlets; 10. Green space; 11. Slope protection; 12. Concrete slab; 13. Through holes; 14. Geotextile; 15. Surface layer; 16. Inner layer. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] A permeable pavement structure, such as Figure 1-Figure 2 As shown, it includes a base layer 1, a crushed stone layer 2 and an asphalt layer 3. A support layer 4 and a drainage layer 5 are arranged between the crushed stone layer 2 and the asphalt layer 3 from bottom to top. A plurality of grooves 6 are opened on the drainage layer 5. The sides of the drainage layer 5 are connected to the drainage channel 7. The grooves 6 are connected to the drainage channel 7. The two sides of the asphalt layer 3 are fixedly connected with guide plates 8. The side of the guide plate 8 away from the asphalt layer 3 is fixedly connected to the top surface of the drainage channel 7. The asphalt layer 3 is permeable asphalt. When it rains, rainwater can infiltrate into the grooves 6 of the drainage layer 5 along the gaps in the asphalt layer 3 to generate underground runoff, and flow into the drainage channel 7 along the grooves 6 for centralized collection and treatment. When it is too late to infiltrate, rainwater can flow on the surface of the asphalt layer 3, and the rainwater on the surface of the asphalt layer 3 is guided to the drainage channel 7 by the guide plates 8. The permeable pavement drains rainwater through surface runoff and underground runoff at the same time, so that rainwater can be discharged in time, thereby alleviating waterlogging in urban roads and reducing pollution caused by sewage backflow in urban roads.

[0023] A number of water permeable openings 9 are provided on both sides of the asphalt layer 3, and the water permeable openings 9 are connected to the grooves 6. When rainwater cannot penetrate in time, the water permeable openings 9 have a larger aperture, which can increase the speed of rainwater penetration. Because the water permeable openings 9 are arranged on the sides of the asphalt layer 3, the possibility of being crushed by vehicle tires is small, so the structural strength of the asphalt layer 3 is less affected, which increases the drainage speed while ensuring the structural strength of the asphalt layer 3.

[0024] The side of the drainage channel 7 is fixedly connected to the green space 10, and the top surface of the drainage channel 7 is connected to the green space 10 through a slope protection 11. The height of the slope protection 11 decreases toward the side close to the green space 10. The horizontal height of the green space 10 is smaller than the drainage channel 7 and the asphalt layer 3. When heavy rainfall occurs, if the drainage channel 7 cannot discharge the water in time, the rainwater can flow along the slope protection 11 to the surface of the green space 10, playing the role of temporary water storage and preventing the rainwater from overflowing to the surface of the asphalt layer 3.

[0025] A concrete slab 12 is fixedly connected to the outside of the gravel layer 2, the concrete slab 12 is inserted into the base layer 1, and the supporting layer 4 is fixedly connected to the top of the concrete slab 12. The concrete slab 12 surrounds the gravel layer 2, reducing the possibility of loosening of the gravel layer 2 and supporting the gravel layer 2. The concrete slab 12 is respectively connected to the base layer 1 and the supporting layer 4, thereby increasing the structural strength of the permeable pavement and extending its service life.

[0026] The drainage layer 5 is provided with a plurality of through holes 13 penetrating the support layer 4. Rainwater flowing on the drainage layer 5 can flow into the gravel layer 2 along the through holes 13, moistening the soil around the gravel layer 2, playing a role in conserving water resources and replenishing groundwater.

[0027] A geotextile 14 is fixedly connected between the base layer 1 and the gravel layer 2. The geotextile 14 can separate the base layer 1 and the gravel layer 2, so that rainwater cannot directly penetrate into the base layer 1, thereby ensuring the stability of the base layer 1. At the same time, it also prevents the moisture in the base layer 1 from eroding the gravel layer 2, thereby improving the structural strength and service life of the permeable pavement.

[0028] The asphalt layer 3 includes a surface layer 15 and an inner layer 16. The maximum particle size of the surface layer 15 is 4mm-8mm, and the maximum particle size of the inner layer 16 is 11mm-16mm. The surface layer 15 is fixedly connected to the top surface of the inner layer 16. The water permeable port 9 penetrates the inner layer 16 and the surface layer 15. The inner layer 16 abuts against the top surface of the drainage layer 5, dividing the asphalt layer 3 into the surface layer 15 and the inner layer 16. The particle size of the surface layer 15 is smaller than that of the inner layer 16, so that the blockage of the internal pores of the inner layer 16 can be reduced, so that the drainage can be smooth.

[0029] The thickness of the surface layer 15 gradually decreases toward the two sides close to the drainage channel 7 , so that rainwater on the surface of the surface layer 15 can flow more quickly toward the drainage channels 7 on both sides, reducing the time that rainwater stays in the surface layer 15 .

[0030] Working process:

[0031] When the rainfall is small, rainwater can penetrate the surface layer 15 and the inner layer 16 to the surface of the drainage layer 5, and then flow into the drainage channel 7 for collection and treatment. When heavy rainfall occurs, rainwater can be drained by infiltration, and when it is too late to infiltrate, it can flow on the surface of the asphalt layer 3, and the rainwater on the surface of the asphalt layer 3 is diverted to the drainage channel 7 through the guide plate 8. If the drainage channel 7 cannot drain the water in time, the rainwater can flow along the slope protection 11 to the surface of the green space 10, playing the role of temporary water storage, preventing rainwater from overflowing to the surface of the asphalt layer 3, so that the rainwater can be discharged in time, thereby ensuring the normal use of the permeable pavement.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A permeable pavement structure, comprising a base layer (1), a crushed stone layer (2) and an asphalt layer (3), characterized in that: A support layer (4) and a drainage layer (5) are arranged in sequence from bottom to top between the crushed stone layer (2) and the asphalt layer (3); a plurality of grooves (6) are provided on the drainage layer (5); a drainage channel (7) is connected to the side of the drainage layer (5); the grooves (6) are connected to the drainage channel (7); guide plates (8) are fixedly connected to both sides of the asphalt layer (3); a side of the guide plate (8) away from the asphalt layer (3) is fixedly connected to the top surface of the drainage channel (7).

2. A permeable pavement structure according to claim 1, characterized in that: A plurality of water-permeable openings (9) are provided on both sides of the asphalt layer (3), and the water-permeable openings (9) are in communication with the groove (6).

3. A permeable pavement structure according to claim 1, characterized in that: The side of the drainage channel (7) is fixedly connected to a green space (10), and the top surface of the drainage channel (7) and the green space (10) are connected via a slope protection (11), and the height of the slope protection (11) decreases towards the side close to the green space (10).

4. A permeable pavement structure according to claim 1, characterized in that: A concrete slab (12) is fixedly connected to the outside of the crushed stone layer (2), the concrete slab (12) is inserted into the base layer (1), and the support layer (4) is fixedly connected to the top of the concrete slab (12).

5. The permeable pavement structure according to claim 1, characterized in that: The drainage layer (5) is provided with a plurality of through holes (13) penetrating the support layer (4).

6. A permeable pavement structure according to claim 1, characterized in that: A geotextile (14) is fixedly connected between the base layer (1) and the gravel layer (2).

7. A permeable pavement structure according to claim 2, characterized in that: The asphalt layer (3) comprises a surface layer (15) and an inner layer (16); the maximum particle size of the surface layer (15) is 4 mm to 8 mm, and the maximum particle size of the inner layer (16) is 11 mm to 16 mm; the surface layer (15) is fixedly connected to the top surface of the inner layer (16); the water permeable opening (9) penetrates the inner layer (16) and the surface layer (15); and the inner layer (16) abuts against the top surface of the drainage layer (5).

8. A permeable pavement structure according to claim 7, characterized in that: The thickness of the surface layer (15) gradually decreases towards the two sides close to the drainage channel (7).

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