Sponge road drainage system
By adopting prefabricated drainage curbs and drainage systems made of permeable materials in sponge cities, the problem of drainage of surface water on permeable roads is solved, the protection and aesthetics of the road structure are achieved, and an efficient drainage effect of accumulated water is provided.
Patent Information
- Application Number
- CN202420494606.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-03-14
AI Technical Summary
Traditional road water inlets and curbs cannot effectively drain water from permeable asphalt pavements and permeable sidewalks in sponge cities, causing damage to the pavement structure and making it difficult to ensure construction quality and aesthetics.
The use of prefabricated drainage curbs, permeable paved sidewalks and permeable asphalt concrete pavements, combined with drainage pipes, forms a complete drainage system. The drainage channels and permeable materials of the prefabricated drainage curbs are utilized to achieve effective drainage of accumulated water.
It can effectively drain the accumulated water in the permeable asphalt pavement and permeable sidewalk, prevent the damage of the pavement structure, ensure the construction quality and aesthetics, and at the same time it has a simple structure and strong practicality.
Smart Images
Figure CN223398007U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a municipal drainage system, and in particular relates to a sponge road drainage system for an asphalt pavement with a drainage function in a sponge city. Background Art
[0002] Existing road drainage technology generally relies on rainwater flowing down the road's slope to the curb, where it flows into a nearby stormwater inlet and then into the municipal drainage system. Because traditional road inlets and connecting pipes are located within the road structure, they require backfilling and excavation. This construction quality is difficult to control and can easily lead to cracking in the road surface, creating a weak point in the road structure and affecting the road's integrity and aesthetics.
[0003] Traditional road drainage inlets can address general surface water accumulation. However, in sponge cities, asphalt pavements, which have drainage functions, seep into the asphalt and become trapped. Traditional curbs, on the other hand, are relatively simple, serving only as a barrier to collisions and water, lacking permeability or drainage capabilities. Consequently, they are unable to drain water from the asphalt layer. This water seeps through the cracks in the curbs into the pavement base layer, causing water damage to the pavement structure. In northern cities, water accumulation in the asphalt layer during winter can lead to repeated freeze-thaw cycles, eroding and damaging the asphalt surface and base layers, significantly reducing the pavement's service life.
[0004] Therefore, a new type of prefabricated curb drainage system is needed, which can effectively drain the water accumulated in the permeable asphalt pavement in the sponge city while ensuring the quality and aesthetics of the pavement construction, and prevent the accumulated water from eroding and damaging the pavement structure. Summary of the Invention
[0005] The purpose of the present utility model is to overcome the shortcomings of the above-mentioned prior art and provide a sponge road drainage system, which includes a new type of assembled drainage curb stone, which can replace the road water inlet to form a complete road drainage system, remove the accumulated water in the permeable asphalt pavement and permeable sidewalk, and ensure the overall construction quality and appearance of the road surface.
[0006] The purpose of this utility model is achieved through the following technical solutions:
[0007] A sponge road drainage system includes an assembled drainage curb, a drainage pipe, a permeable paved sidewalk, and a permeable asphalt concrete pavement. One side of the assembled drainage curb is located at the edge of the permeable paved sidewalk, and the other side is located at the edge of the permeable asphalt concrete pavement base. The permeable paved sidewalk and the permeable asphalt concrete pavement are both inclined toward the assembled drainage curb.
[0008] The assembled drainage curbstone includes a curbstone cover and a curbstone body. Multiple drainage outlets are provided on the side walls of the curbstone body opposite to each other, and the side walls of the curbstone body face the permeable paved sidewalk and the permeable asphalt concrete pavement respectively. Furthermore, the space formed inside the curbstone cover and the curbstone body when they are fastened together serves as a drainage channel.
[0009] When in use, multiple assembled drainage curbs are arranged side by side, and adjacent assembled drainage curbs are sealed, so that a through drainage channel is formed inside the multiple assembled drainage curbs;
[0010] The drainage pipe is laid parallel to the lower layer of the permeable paved sidewalk, one end of which extends into the drainage channel of one of the assembled drainage curbs, and the other end is connected to the municipal drainage system.
[0011] Furthermore, the slope of the permeable paved sidewalk toward the assembled drainage curb is 1%, and the slope of the permeable asphalt concrete pavement toward the assembled drainage curb is 1.5%, thereby facilitating drainage.
[0012] Furthermore, the uppermost layer of the permeable paved sidewalk is a permeable brick, and the uppermost layer of the permeable asphalt concrete pavement is a drainage asphalt top layer, and the void ratio of the drainage asphalt top layer is 18%-22%.
[0013] Furthermore, the longitudinal section of the curb stone body is U-shaped, and the curb stone body includes an integrally connected body bottom wall and two body side walls, and a plurality of drainage outlets corresponding to positions are respectively opened on the two opposite body side walls, and the drainage outlets are located at the upper part of the body side walls; the longitudinal section of the curb stone top cover is T-shaped, including a top cover body and an outwardly protruding flange.
[0014] Compared with the prior art, the beneficial effects brought about by the technical solution of the utility model are:
[0015] The sponge road drainage system described in the utility model adopts a new type of assembled drainage curb, which can effectively drain water accumulated inside the asphalt and water accumulated in the permeable concrete of the sidewalk in the existing sponge city drainage asphalt road, preventing the accumulated water from eroding and damaging the road surface structure. It can replace the traditional road water inlet, ensure the quality and beauty of road construction, and has a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic cross-sectional view of a sponge road of the sponge road drainage system of the present invention;
[0017] Figure 2 This is a top view structural diagram of the sponge road drainage system;
[0018] Figure 3is a longitudinal cross-sectional view of the assembled drainage curb in the sponge road drainage system;
[0019] Figure 4 yes Figure 3 The front view of the fabricated drainage curb stone shown;
[0020] Figure 5 yes Figure 3 Top view of the fabricated drainage curb shown.
[0021] In the picture:
[0022] 1: Curb cap; 2: Drain outlet; 3: Curb body; 4: Prefabricated drainage curb; 5: Permeable brick; 6: Dry hard mortar; 7: Permeable geotextile; 8: Permeable concrete; 9: Impermeable geotextile; 10: Back-bumping concrete; 11: Sealant; 12: U-PVC drainage pipe; 13: Drainage asphalt upper layer; 14: Waterproof bonding layer; 15: Impermeable asphalt middle and lower layers.
[0023] 16: Bottom wall of the main body; 17: Side wall of the main body; 18: Top cover body; 19: Flange; 20: Drainage channel; 21: Permeable paved sidewalk; 22: Permeable asphalt concrete pavement. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions, beneficial effects and significant progress of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in combination with the drawings provided in the examples of the present invention. Obviously, all the described embodiments are only partial embodiments of the present invention, rather than all embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0025] In the description of this application, unless otherwise expressly specified or limited, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more; unless otherwise specified or explained, the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; "connected" can mean a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0026] like Figure 1 and Figure 2As shown, a sponge road drainage system includes a prefabricated drainage curb 4, a U-PVC drainage pipe 12, a permeable pavement 21, and a permeable asphalt concrete pavement 22. The prefabricated drainage curb 4 is located at the edge of the permeable pavement on one side and at the edge of the asphalt concrete pavement on the other side. The permeable pavement has a downward slope of 1% toward the prefabricated drainage curb 4, and the permeable asphalt concrete pavement has a downward slope of 1.5% toward the prefabricated drainage curb 4.
[0027] The permeable pavement sidewalk includes, from top to bottom, permeable bricks 5, dry hard mortar 6, permeable geotextile 7, permeable concrete 8, and impermeable geotextile 9. The permeable asphalt concrete pavement includes, from top to bottom, a drainage asphalt upper layer 13, a waterproof bonding layer 14, and an impermeable asphalt lower layer 15. The permeability coefficient of the permeable bricks 5 is not less than 0.1 mm / s; the dry hard mortar 6 is a 1:6 (mass ratio) dry hard mortar; the permeability coefficient of the permeable geotextile 7 is not less than 0.05 cm / s, the porosity of the permeable concrete 8 is not less than 11%-17%, and the permeability coefficient of the impermeable geotextile 9 is 10 -10 ~10 -12 cm / s. The drainage asphalt top layer 13 (i.e., the permeable asphalt pavement) has a porosity of approximately 20% after compaction, forming an asphalt concrete surface layer capable of forming drainage channels within the mixture. The crushed stone particle size within the mixture is 10-20 mm. The waterproof bonding layer 14 is used to bond the drainage asphalt top layer 13 to the impermeable asphalt middle and lower layer 15. The impermeable asphalt middle and lower layer 15 uses a dense grade of AC20 and a water permeability coefficient of no more than 40 ml / min.
[0028] Specifically, the curb stone body 3 is 1000 mm long and 350 mm high; the top edge of the drain outlet 2 is 50 mm away from the top surface of the curb stone body 3; the curb stone top cover 1 is 1000 mm long and 100 mm high.
[0029] like Figure 3-5 As shown, the assembled drainage curb 4 includes a curb cover 1 and a curb body 3. Figure 3 As shown in the side view of the assembled drainage curb 4, the curb body 3 has a U-shaped longitudinal section. The curb body 3 includes an integrally connected bottom wall 16 and two side walls 17. A plurality of corresponding drainage openings 2 are respectively provided on the two opposite side walls 17. The drainage openings are located at the upper part of the side walls 17, that is, near the curb top cover 1. Figure 3As shown, the longitudinal section of the curb stone cover 1 is T-shaped, including a cover body 18 and an outwardly protruding flange 19. The width of the cover body 18 of the curb stone cover 1 is adapted to the spacing between the two main body side walls 17 of the curb stone body 3, and the flange 19 of the curb stone cover 1 can just cover the top walls of the two main body side walls.
[0030] Furthermore, the space formed inside the curb cap 1 and the curb body 3 after being fastened together serves as a drainage channel 20. When in use, multiple prefabricated drainage curbs 4 are arranged side by side, adjacent prefabricated drainage curbs 4 are sealed with sealant, and the outer sides of the prefabricated drainage curbs 4 are fixed with backfill concrete 10, thereby forming a through drainage channel 20.
[0031] The drainage pipe 12 is laid parallel to the anti-seepage geotextile 9 of the permeable paved sidewalk, with a spacing of 5 meters; the drainage pipe 12 is made of U-PVC material, one end of which extends into the drainage channel 20 of one of the assembled drainage curbs 4, and the other end is connected to the municipal drainage system.
[0032] During on-site installation, first install the curb body 3 and U-PVC drainage pipe 12 of the assembled drainage curb 4; the adjacent curb bodies are sealed with sealant. After the permeable bricks 5 and the drainage asphalt upper layer 13 of the permeable paved sidewalk and permeable asphalt concrete pavement are paved, install the curb cover 1. The outer side of the curb cover 1 is grouted with mica glue of the same color as the drainage curb 4 to ensure beauty while fixing the cover to a certain extent.
[0033] During use, rainwater passes through the drainage asphalt top layer of the permeable asphalt concrete pavement and the permeable bricks 5 of the permeable paved sidewalk, and then gathers into the drainage channel 20 inside the assembled drainage curb 4 through the drainage outlet 2, and then is discharged into the nearby municipal drainage system through the drainage pipe 12.
[0034] The drainage system described in the utility model can effectively drain the accumulated water in the permeable asphalt pavement and permeable sidewalk in the sponge city, and replace the pavement water inlet to ensure the overall construction quality and appearance of the pavement. It also has the characteristics of simple structure and strong practicality.
[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A sponge road drainage system, characterized in that: It comprises an assembled drainage curb (4), a drainage pipe (12), a permeable paved sidewalk and a permeable asphalt concrete pavement, wherein one side of the assembled drainage curb (4) is located at the edge of the permeable paved sidewalk base, and the other side is located at the edge of the permeable asphalt concrete pavement base; and the permeable paved sidewalk and the permeable asphalt concrete pavement are both inclined toward the assembled drainage curb (4); The assembled drainage curb (4) comprises a curb cover (1) and a curb body (3); a plurality of drainage openings (2) corresponding to positions are respectively provided on the main body side walls (17) opposite to the curb body (3); and the main body side walls (17) face the permeable paved sidewalk and the permeable asphalt concrete pavement respectively; and a space formed inside the curb cover (1) and the curb body (3) when they are buckled together serves as a drainage channel (20); When in use, a plurality of assembled drainage curb stones (4) are arranged side by side, and adjacent assembled drainage curb stones (4) are sealed, so that a through drainage channel (20) is formed inside the plurality of assembled drainage curb stones (4); The drainage pipe (12) is laid parallel to the lower layer of the permeable paved sidewalk, one end of which extends into the drainage channel (20) of one of the assembled drainage curbs (4), and the other end is connected to the municipal drainage system.
2. The sponge road drainage system according to claim 1, characterized in that: The slope of the permeable paved sidewalk toward the assembled drainage curb (4) is 1%, and the slope of the permeable asphalt concrete pavement toward the assembled drainage curb (4) is 1.5%.
3. The sponge road drainage system according to claim 1, characterized in that: The uppermost layer of the permeable pavement sidewalk is a permeable brick (5), and the uppermost layer of the permeable asphalt concrete pavement is a drainage asphalt upper layer (13). The void ratio of the drainage asphalt upper layer (13) is 18%-22%.
4. The sponge road drainage system according to claim 1, characterized in that: The longitudinal section of the curb stone body (3) is U-shaped, and the curb stone body (3) comprises an integrally connected body bottom wall (16) and two body side walls (17), and a plurality of corresponding drainage openings (2) are respectively provided on the two opposite body side walls (17), and the drainage openings are located at the upper part of the body side walls (17); the longitudinal section of the curb stone top cover (1) is T-shaped, and comprises a top cover body (18) and an outwardly protruding flange (19).