Pervious concrete structure facilitating rainwater collection

Abstract

The utility model relates to the technical field of roadbed engineering, and discloses a pervious concrete structure convenient for rainwater collection, which comprises a wear-resistant layer, a pervious layer, a water diversion layer and a cushion layer which are sequentially arranged from top to bottom, the aggregate particle size of the wear-resistant layer is smaller than that of the permeable layer; the water diversion layer is uniformly provided with a plurality of transversely and longitudinally staggered water diversion ditches, a plurality of rectangular block structures are formed on the top surface of the water diversion layer, the water diversion ditches extend to the edge of the water diversion layer, and a plurality of water permeable holes are vertically and uniformly distributed in the rectangular block structures and penetrate through the water diversion layer; the plane of the whole wear-resistant layer can realize water permeation, rainwater can enter the water-permeable layer through aggregate gaps on the wear-resistant layer, and a water-permeable hole structure does not need to be additionally arranged; rainwater cannot be accumulated on the surface of the wear-resistant layer while attractiveness is guaranteed by the wear-resistant layer; the water diversion ditches and the water permeable holes are located in the same layer, rainwater from the water permeable layer can be collected or drained through the water diversion ditches or the water permeable holes in the whole water diversion layer plane, and the water permeable effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of roadbed engineering, in particular to a permeable concrete structure which is convenient for collecting rainwater. Background Art

[0002] As the climate and environment suffer varying degrees of damage, water resources are polluted. To address these issues, the "sponge city" concept has been proposed, hoping that cities will improve their ability to adapt to environmental changes and natural disasters. It aims to absorb, store, infiltrate, and store water when it rains, and to process and utilize the collected rainwater. Currently, permeable concrete and related products are used to filter and infiltrate rainwater into the underground layer, but this method has poor water permeability and can easily cause urban waterlogging during heavy rain or rainstorms. A utility model patent (authorization announcement number CN210104468U) discloses a permeable prefabricated bottled concrete road. The solution includes, from top to bottom, prefabricated concrete blocks, a permeable layer, and a concrete roadbed. The prefabricated concrete blocks are provided with multiple rows of permeable holes for water permeation, and the concrete roadbed is provided with multiple rows of drainage ditches. Collection pipes with drainage holes are provided in the drainage ditches to divert rainwater.

[0003] The problems with the above solution are: the top layer is a prefabricated concrete block with water permeable holes, and water can only be achieved through the water permeable holes. The water permeability is directly related to the number of water permeable holes. The water permeability is poor during heavy rain, and the water permeable holes are exposed on the surface, which is not beautiful. In addition, although the water collection pipe and the prefabricated concrete block with water permeable holes are arranged correspondingly, the two are located in different layers, separated by a water permeable layer. When heavy rain occurs, the water permeable holes of the rainwater well enter the water permeable layer downward, and the movement path in the water permeable layer is irregular, which cannot ensure that the rainwater is quickly discharged through the water collection pipe. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide a permeable concrete structure that is convenient for rainwater collection. When the rainwater is small, it seeps into the ground through the permeable structure. When the rainwater is large and rapid, part of it seeps into the ground through the permeable structure, and the other part is promptly drained to the water collection area through the diversion ditch to realize rainwater collection.

[0005] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] A permeable concrete structure for collecting rainwater comprises a wear-resistant layer, a permeable layer, a water diversion layer and a cushion layer arranged in sequence from top to bottom; the aggregate particle size of the wear-resistant layer is smaller than that of the permeable layer; a plurality of water diversion ditches staggered horizontally and vertically are evenly arranged on the water diversion layer, and a plurality of rectangular block structures are formed on the top surface of the water diversion layer, the water diversion ditches extend to the edge of the water diversion layer, and a plurality of permeable holes are evenly distributed vertically on the rectangular block structures, and the permeable holes penetrate the water diversion layer.

[0007] As a further implementation, a steel mesh is provided between the water-permeable layer and the water-drawing layer.

[0008] As a further implementation, the wear-resistant layer has a thickness of 3-5 mm.

[0009] As a further implementation, the thickness of the water-permeable layer is 20-30 mm.

[0010] As a further implementation method, the aggregate of the permeable layer is lightweight ceramsite with a particle size of 5-10 mm.

[0011] As a further implementation, the water diversion layer has a thickness of 5-8 mm, the water diversion ditch has a width of 10-15 mm, and a depth of 5-10 mm.

[0012] As a further implementation, the cushion layer is compacted soil.

[0013] As a further implementation, the material of the water diversion layer is concrete.

[0014] As a further implementation, the bottom surface of the water diversion ditch is a plane.

[0015] As a further implementation method, the water diversion ditches are spaced at the same intervals in the horizontal and vertical directions of the water diversion layer, and the formed block structure is square.

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

[0017] 1. The entire plane of the wear-resistant layer of the utility model can be water-permeable, and rainwater can enter the water-permeable layer through the gaps between the aggregates on the wear-resistant layer, without the need for an additional water-permeable hole structure; and the aggregate particle size of the wear-resistant layer is smaller than that of the water-permeable layer. While ensuring the appearance of the wear-resistant layer, rainwater will not accumulate on the surface of the wear-resistant layer; in addition, the water diversion layer arranges the water diversion ditch and the water permeable hole on the entire plane of the water diversion layer, and the water diversion ditch and the water permeable hole are located on the same layer. The entire plane of the water diversion layer can collect or drain rainwater from the water permeable layer through the water diversion ditch or the water permeable hole, and the water permeability effect is good.

[0018] 2. The water permeability of the wear-resistant layer, permeable layer and water diversion layer of the utility model is gradually enhanced, which can ensure that there is no water accumulation on the road surface; when the rain is light, the rainwater can penetrate into the ground through the corresponding permeable structures such as the permeable holes. When the rain is heavy and rapid, the diversion ditch and the permeable holes jointly participate in water permeation and drainage. Part of it penetrates into the ground through the permeable structure, and the other part is promptly drained to the water collection area through the diversion ditch to realize rainwater collection.

[0019] 3. A wire mesh is provided between the water-permeable layer and the water-diversion layer of the utility model. After the water-diversion layer is constructed, a layer of wire mesh is covered on the water-diversion layer to prevent the construction of the water-permeable layer from clogging the water diversion ditch and the water-permeable hole, thereby ensuring the water-permeable effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of a permeable concrete structure that is convenient for rainwater collection in an embodiment of the present utility model;

[0022] Figure 2 It is a structural schematic diagram of a water diversion layer in a permeable concrete structure that is convenient for collecting rainwater in an embodiment of the utility model.

[0023] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0024] Among them: 1. Wear-resistant layer; 2. Permeable layer; 3. Wire mesh; 4. Water diversion layer; 5. Cushion layer; 6. Water diversion ditch; 7. Permeable hole. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] Example 1

[0027] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 2 As shown, a permeable concrete structure for rainwater collection comprises, from top to bottom, a wear-resistant layer 1, a permeable layer 2, a water diversion layer 4, and a cushion layer 5. The water diversion layer 4 is provided with permeable holes 7 and a diversion ditch 6. This structure integrates both permeability and water collection. During light rain, water seeps into the ground through the permeable holes and other permeable structures. During heavy and rapid rain, some water seeps into the ground through the permeable structures, while the remaining water is promptly diverted to the collection area through the diversion ditch, achieving rainwater collection.

[0028] The thickness of the wear-resistant layer 1 in this embodiment is 3-5 mm, and preferably the thickness h1 of the wear-resistant layer 1 is 5 mm.

[0029] The aggregate particle size of the wear-resistant layer 1 is smaller than that of the water-permeable layer 2. The water-permeable layer 2 is located below the wear-resistant layer 1. The thickness of the water-permeable layer 2 is 20-30 mm, and preferably the thickness h2 of the water-permeable layer 2 is 30 mm.

[0030] The aggregate of the permeable layer 2 is high-strength lightweight ceramsite, the water diversion layer 4 is located below the permeable layer 2, the thickness of the water diversion layer 4 is 5-8 mm, preferably the thickness h3 of the water diversion layer 4 is 8 mm. The material of the water diversion layer 4 is concrete.

[0031] In order to improve the water permeability while ensuring the compressive strength of the structure, the high-strength lightweight ceramsite of the water-permeable layer 2 is 5-10 mm, and the preferred particle size is 10 mm.

[0032] The cushion layer 5 is located below the water diversion layer 4 and is compacted soil.

[0033] like Figure 2 As shown, in order to achieve water permeability and water collection of the structure, a number of horizontal and vertical staggered water diversion ditches are evenly opened on the water diversion layer 4 of this embodiment and a number of rectangular block structures are formed on the top surface of the water diversion layer 4. The water diversion ditch 6 extends to the edge of the water diversion layer 4 to form an opening, so as to facilitate the water in the water diversion ditch 6 to be led to the water collection area. A number of water permeable holes 7 are evenly distributed vertically on the formed rectangular block structure, and the water permeable holes 7 penetrate the water diversion layer 4 to facilitate the timely penetration of the water above to the cushion layer 5.

[0034] like Figure 2 As shown, the diversion ditches 6 are spaced uniformly in the horizontal and vertical directions of the diversion layer 4. The bottom surface of the diversion ditches 6 is a rectangular plane. The arrangement of the diversion ditches 6 divides the top of the diversion layer 4 into a plurality of square block structures. The permeable holes 7 are evenly arranged on the square block structures.

[0035] In this embodiment, the width of the diversion ditch 6 is 10-15 mm, preferably the width B is 15 mm, and the depth is 5-10 mm, preferably the depth h4 is 10 mm, which ensures the water diversion efficiency. The diameter d of the water permeable hole 7 is 3 mm, which improves the water permeability efficiency.

[0036] Taking into account that the water diversion ditch 6 and the water permeable hole 7 are prone to blockage when the water diversion layer is constructed after the permeable layer is constructed, a wire mesh cloth 3 is provided between the permeable layer 2 and the water diversion layer 4. After the water diversion layer is constructed, a layer of wire mesh cloth 3 is covered on the water diversion layer to prevent the construction of the permeable layer 2 from clogging the water diversion ditch and the water permeable hole.

[0037] The wear-resistant layer 1 of this embodiment is located at the top layer of the structure, and no water-permeable layer is set. The material of the wear-resistant layer 1 is made of natural colored granite, marble and modified epoxy resin glued together. Rainwater falling on the wear-resistant layer 1 can enter the water-permeable layer through the gaps between the aggregates on the wear-resistant layer. Therefore, the entire plane of the wear-resistant layer 1 can be permeable. Compared with the concrete prefabricated blocks in the prior art that are permeable through a water-permeable hole structure, the wear-resistant layer 1 of this embodiment has a better water-permeable effect and does not require a water-permeable hole structure, ensuring beauty while having a good water-permeable effect.

[0038] The aggregate particle size of the wear-resistant layer 1 of this embodiment is smaller than the aggregate particle size of the water-permeable layer 2, so the water permeability of the water-permeable layer 2 is greater than the water permeability of the wear-resistant layer 1, so that rainwater will not accumulate on the surface of the wear-resistant layer 1, and the rainwater flow rate from the water-permeable layer is greater than the rainwater flow rate from the wear-resistant layer 1 to the water-permeable layer.

[0039] The water diversion layer 4 of this embodiment is provided with a water diversion ditch and a water permeable hole, and the water diversion ditch and the water permeable hole are located on the same layer. Therefore, the entire plane of the water diversion layer 4 can collect or drain rainwater from the permeable layer through the water diversion ditch 6 or the water permeable hole 7. Therefore, the water permeability and water diversion effect of the water diversion layer 4 is obvious. Due to the permeable layer 2, the water permeability effect of the wear-resistant layer 1, the permeable layer 2, and the water diversion layer 4 of this embodiment is gradually enhanced, which can ensure that there is no water accumulation on the road surface.

[0040] The arrangement of the water diversion layer 4 allows rainwater to seep into the ground through the corresponding permeable structures such as the water permeable holes 7 during light rainfall. During heavy and rapid rainfall, the water diversion ditch 6 and the water permeable holes 7 work together to penetrate and drain the water. A portion of the water seeps into the ground through the permeable structures, while the remaining portion is promptly drained to the water collection area through the water diversion ditch 6, thus achieving rainwater collection. While maintaining aesthetic appeal, this embodiment is suitable for use in all seasons, whether it is light rain, heavy rain, or rainstorms, and can achieve both water collection and water permeation through this structure.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A permeable concrete structure for collecting rainwater, characterized in that: It includes a wear-resistant layer, a permeable layer, a water diversion layer and a cushion layer arranged in sequence from top to bottom; the aggregate particle size of the wear-resistant layer is smaller than that of the permeable layer; a number of water diversion ditches staggered horizontally and vertically are evenly arranged on the water diversion layer, and a number of rectangular block structures are formed on the top surface of the water diversion layer, the water diversion ditches extend to the edge of the water diversion layer, and a number of permeable holes are evenly distributed vertically on the rectangular block structure, and the permeable holes penetrate the water diversion layer.

2. A permeable concrete structure for rainwater collection according to claim 1, characterized in that: A steel wire mesh is arranged between the water-permeable layer and the water-drawing layer.

3. A permeable concrete structure for rainwater collection according to claim 1, characterized in that: The thickness of the wear-resistant layer is 3-5 mm.

4. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The thickness of the water-permeable layer is 20-30 mm.

5. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The aggregate of the permeable layer is lightweight ceramsite with a particle size of 5-10 mm.

6. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The thickness of the water diversion layer is 5-8 mm, the width of the water diversion ditch is 10-15 mm, and the depth is 5-10 mm.

7. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The cushion layer is compacted plain soil.

8. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The material of the water diversion layer is concrete.

9. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The bottom surface of the water diversion ditch is a plane.

10. The permeable concrete structure for rainwater collection according to claim 1, characterized in that: The intervals between the water diversion ditches in the horizontal and vertical directions of the water diversion layer are the same, and the formed block structure is square.

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