Hard permeable pavement

Abstract

The utility model relates to the technical field of road construction, in particular to a hard permeable pavement which comprises a cushion layer, a waterproof rigid base layer and a permeable surface layer which are sequentially laid on a soil layer from bottom to top. The water guide pipe vertically penetrates through the waterproof rigid base layer, and the two ends of the water guide pipe communicate with the permeable surface layer and the cushion layer correspondingly. The water guide pipe is pre-buried in the waterproof rigid base layer, and rainwater can permeate into the soil layer from the water guide pipe and the cushion layer after permeating into the permeable surface layer, so that the rainwater permeation requirement of a hard pavement in sponge city construction is met, meanwhile, the bearing capacity and the bearing durability of the pavement cannot be reduced, the manufacturing cost can be reduced, and the service life of the pavement is prolonged. The wide popularization significance is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to road construction technical field especially relates to a hard water-permeable pavement. BACKGROUND

[0002] Sponge city is a new generation of urban rainwater management concept, which refers to the city's ability to adapt to environmental changes and cope with natural disasters caused by rainwater, etc. It has good flexibility, absorbs, stores, permeates and purifies water when it rains, and releases and utilizes the stored water when needed, realizing the free migration of rainwater in the city.

[0003] At present, the road surface with rainwater permeability is divided into two kinds of water-permeable asphalt pavement and water-permeable concrete pavement, the water-permeable asphalt pavement is covered with water-permeable asphalt surface layer on the water-permeable concrete base layer, and the water-permeable concrete pavement is not covered with water-permeable asphalt surface layer, and the rigid layer of the two is water-permeable concrete. The water-permeable concrete is a kind of porous lightweight concrete mixed by aggregate, cement, water and additive, which has water permeability and can infiltrate surface rainwater to the lower soil layer, meeting the design requirements of sponge city. However, although the water-permeable concrete has water permeability, its texture is looser than ordinary concrete, and when it is used as the rigid stress layer of pavement and hard square, its bearing capacity and bearing durability are lower than those of ordinary concrete, so the construction unit often resists the construction of water-permeable pavement, resulting in the application of water-permeable pavement being hindered. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of hard water-permeable pavement to solve the problem that existing water-permeable pavement cannot have water permeability and better bearing capacity and bearing durability.

[0005] In order to achieve the above purpose, the utility model provides a kind of hard water-permeable pavement, which comprises a cushion layer, a water-impermeable rigid base layer and a water-permeable surface layer sequentially laid on the soil layer from bottom to top, a plurality of water guide pipes are embedded in the water-impermeable rigid base layer, and the water guide pipes penetrate the water-impermeable rigid base layer along the vertical direction and communicate with the water-permeable surface layer and the cushion layer at both ends.

[0006] Optionally, the water guide pipes are filled with water-permeable material.

[0007] Optionally, the water guide pipes are filled with sand or water-permeable concrete.

[0008] Optionally, the water guide pipes are PVC round pipes.

[0009] Optionally, the water-impermeable rigid base layer is made of ordinary concrete.

[0010] Optionally, steel bars are embedded in the water-impermeable rigid base layer.

[0011] Optionally, the water guide pipes are embedded in the water-impermeable rigid base layer in a rectangular array arrangement.

[0012] Optionally, the water-impermeable rigid base layer has a downward slope towards the water guide pipes.

[0013] Optionally, the cushion layer is made of gravel or pebble.

[0014] Optionally, the water-permeable surface layer is made of asphalt and has a flat upper surface.

[0015] The hard water-permeable pavement provided by the utility model has at least one of the following beneficial effects:

[0016] 1) By embedding the water guide pipes in the water-impermeable rigid base layer, rainwater that has penetrated into the water-permeable surface layer can penetrate into the soil layer through the water guide pipes and the cushion layer, thereby meeting the rainwater penetration requirement of the hard pavement in the construction of a sponge city, without reducing the load bearing capacity and load bearing durability of the pavement, and reducing the cost, and having a wide range of application;

[0017] 2) The water-impermeable rigid base layer is made of ordinary concrete, and has higher load bearing capacity and load bearing durability than the water-permeable cement concrete rigid base layer of the water-permeable pavement, and the water-impermeable rigid base layer is embedded with steel bars to further improve the load bearing capacity of the pavement, maintain the overall load bearing capacity of the water-impermeable rigid base layer, and avoid road collapse and deformation;

[0018] 3) The water guide pipes are PVC round pipes, have good corrosion resistance, strong anti-aging performance, small fluid resistance, good drainage performance, and are economical and environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Those skilled in the art should understand that the provided drawings are used to better understand the utility model, and do not constitute any limitation on the scope of the utility model. Among them:

[0020] Figure 1 The cross-sectional view of the hard water-permeable pavement provided by an embodiment of the utility model is provided.

[0021] Figure 2 The distribution view of the water guide pipes provided by an embodiment of the utility model is provided.

[0022] Among them:

[0023] 100- soil layer; 200- cushion layer; 300- water-impermeable rigid base layer; 400- water-permeable surface layer; 500- water guide pipe. DETAILED DESCRIPTION

[0024] For the purpose, advantages and characteristics of the present application to be more clear, the following will make further detailed description of the present application in combination with the drawings and specific embodiments. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating, clearly assisting the description of the present application. In order to make the purpose, characteristics and advantages of the present application more obvious and easy to understand, please refer to the drawings. It is known that the structure, proportion, size, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions of the present application. Any modification of structure, change of proportion relationship or adjustment of size, as long as it is the same or similar to the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0025] As used in the present application, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. As used in the present application, the term "or" is generally used in the sense of "and / or" unless the content clearly dictates otherwise. As used in the present application, the term "several" is generally used in the sense of "at least one" unless the content clearly dictates otherwise. As used in the present application, the term "at least two" is generally used in the sense of "two or more" unless the content clearly dictates otherwise. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can be explicitly or implicitly included one or at least two features.

[0026] In the description of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Please refer to Figure 1The embodiment provides a hard water-permeable pavement, which comprises a cushion layer 200, a water-impermeable rigid base layer 300 and a water-permeable surface layer 400 which are sequentially laid on a soil layer 100 from bottom to top, a plurality of water guide pipes 500 are pre-embedded in the water-impermeable rigid base layer 300, the water guide pipes 500 vertically penetrate the water-impermeable rigid base layer 300 and are respectively communicated with the water-permeable surface layer 400 and the cushion layer 200 at two ends.

[0028] By pre-embedding the water guide pipes 500 in the water-impermeable rigid base layer 300, rainwater permeating into the water-permeable surface layer 400 can permeate into the soil layer 100 from the water guide pipes 500 and the cushion layer 200, as shown by an arrow direction in the figure, so that the rainwater permeation requirement of the hard pavement in the construction of a sponge city is met, meanwhile, the bearing capacity and bearing durability of the pavement are not reduced, the cost can be reduced, and the hard water-permeable pavement has wide popularization significance. Figure 1

[0029] As the name implies, the water-impermeable rigid base layer 300 is a rigid base layer made of water-impermeable material and has high bearing capacity and bearing durability. In the embodiment, the water-impermeable rigid base layer 300 is made of ordinary concrete pouring, and compared with the water-permeable pavement in which water-impermeable cement concrete is used as the rigid base layer, the water-impermeable rigid base layer 300 has higher bearing capacity and bearing durability.

[0030] Preferably, steel bars are pre-embedded in the water-impermeable rigid base layer 300, so as to further improve the bearing capacity of the pavement, maintain the overall bearing capacity of the water-impermeable rigid base layer 300 and avoid road collapse and deformation. The number and distribution mode of the steel bars are not limited in the utility model.

[0031] Preferably, as shown in the figure, the water guide pipes 500 are pre-embedded in the water-impermeable rigid base layer 300 in a rectangular array distribution mode. In the embodiment, the water guide pipes 500 can be pre-embedded in the water-impermeable rigid base layer 300 in a rectangular array distribution mode before concrete pouring, so as to ensure that the pavement has good water permeability everywhere, and the length is equal to the thickness of the water-impermeable rigid base layer 300. Of course, in addition to the rectangular array distribution mode, the shape of the pavement can be reasonably designed, for example, the water guide pipes 500 are pre-embedded in a circular ring distribution mode with a certain point as the center, and the utility model is not limited in this respect. Figure 2 It should be noted that when the water guide pipes 500 are positioned, the spacing and diameter of the water guide pipes 500 are adjusted, so as to avoid the steel bars in the water-impermeable rigid base layer 300 as much as possible, and then the continuity of the steel bars in the concrete is avoided, so that the integrity of the concrete pouring is improved.

[0032]

[0033] ​​Preferably, the water-impermeable rigid base layer 300 has a downward slope towards the direction of the water guide pipe 500. That is, the height of the water-impermeable rigid base layer 300 gradually decreases towards the direction of the water guide pipe 500, so that the rainwater seeping from the water-permeable surface layer 400 can flow along the slope to the water guide pipe. The size of the slope can be set according to the construction requirements, and the present application does not limit this.

[0034] Preferably, the water guide pipe 500 is filled with water-permeable material, which can play a certain filtering role by filling the water-permeable material.

[0035] In this embodiment, the water guide pipe 500 is filled with sand or water-permeable concrete.

[0036] In this embodiment, the water guide pipe 500 is a PVC (polyvinyl chloride) round pipe. PVC has good corrosion resistance, strong anti-aging performance, small fluid resistance, good drainage performance, and is economical and environmentally friendly, which is a better choice. Of course, in addition to PVC materials, other alternatives well known in the art can also be used, and the present application does not limit this. In addition to round pipes, square pipes and other shapes can also be used, and the present application does not limit this.

[0037] In this embodiment, PVC round pipes with a diameter of 80 mm are pre-buried in the water-impermeable rigid base layer 300 in a matrix pattern every 1.5 meters.

[0038] In this embodiment, the water-impermeable rigid base layer 300 and the soil layer 100 are provided with the cushion layer 200, which can be gravel or gravel. The gravel or gravel has gaps between them, so the rainwater flowing through the water guide pipe 500 can infiltrate into the lower soil layer 100 through the gaps of the cushion layer 200. The cushion layer 200 is located between the water-impermeable rigid base layer 300 and the soil layer 100, and directly contacts the soil layer 100. Its main function is to improve the humidity and temperature conditions of the soil, and to ensure that the strength, stiffness and stability of the surface layer and the base layer are not affected by the soil foundation. At the same time, the cushion layer 200 can further diffuse the load stress transmitted by the water-impermeable rigid base layer 300, thereby reducing the effect of the vertical deformation and the surface pressure stress of the soil layer 100.

[0039] In this embodiment, the water-permeable surface layer 400 uses asphalt and has a flat upper surface. The water-permeable surface layer 400 is the uppermost layer of the road surface, and the main function of this layer is to allow water to pass through and prevent water from accumulating on the road surface. In addition to using asphalt, water-permeable bricks or other water-permeable materials can also be used. The design of the water-permeable surface layer 400 can be adjusted according to different requirements to meet different road surface requirements.

[0040] The utility model discloses a kind of hard water-permeable pavement, by embedding the water pipe 500 in the impervious rigid base layer 300, rainwater can be infiltrated into soil layer 100 from the water pipe 500 and the cushion layer 200 after infiltrating the water-permeable surface course 400, whereby both meet the rainwater infiltration requirement of hard pavement in sponge city construction, while also will not reduce the bearing capacity and bearing durability of pavement, and can reduce cost, with extensive popularization significance.

[0041] In addition, it should also be realized that, although the utility model has been disclosed as above with preferred embodiments, the above embodiments are not used to limit the utility model. For any skilled person in the art, without departing from the technical scheme range of the utility model, many possible changes and modifications can be made to the technical scheme of the utility model by using the disclosed technical content, or modified as equivalent embodiments of equivalent change. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, without departing from the content of the technical scheme of the utility model, still belongs to the protection range of the technical scheme of the utility model.

Claims

1. A hard, permeable pavement, characterized in that, It includes a subbase layer, an impermeable rigid base layer, and a permeable surface layer laid sequentially on the soil layer from bottom to top. Several water pipes are pre-embedded in the impermeable rigid base layer. The water pipes penetrate the impermeable rigid base layer vertically and are connected at both ends to the permeable surface layer and the subbase layer, respectively.

2. The hard permeable pavement according to claim 1, characterized in that, The water pipe is filled with a water-permeable material.

3. The hard permeable pavement according to claim 2, characterized in that, The water pipe is filled with sand or permeable concrete.

4. The hard permeable pavement according to claim 1, characterized in that, The water pipe is a PVC round pipe.

5. The hard permeable pavement according to claim 1, characterized in that, The impermeable rigid base layer is made of ordinary concrete.

6. The hard permeable pavement according to claim 5, characterized in that, The impermeable rigid base layer is pre-embedded with steel bars.

7. The hard permeable pavement according to claim 1 or 5, characterized in that, The water pipes are pre-embedded in the impermeable rigid base layer in a rectangular array arrangement.

8. The hard permeable pavement according to claim 1, characterized in that, The impermeable rigid base layer has a downward slope in the direction of the water pipe.

9. The hard permeable pavement according to claim 1, characterized in that, The subbase is made of crushed stone or gravel.

10. The hard permeable pavement according to claim 1, characterized in that, The permeable surface layer is made of asphalt and has a smooth upper surface.

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