Sponge city construction water permeable concrete surface layer
The permeable concrete surface layer with a multi-layered structure design solves the problems of reduced permeability and insufficient structural durability, achieving efficient water permeability and stable rainwater infiltration, thus improving the ecological construction effect of sponge cities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI INVESTMENT REAL ESTATE DEV CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
Smart Images
Figure CN224494786U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sponge city construction technology, and in particular to a permeable concrete surface layer for sponge city construction. Background Technology
[0002] A sponge city is a city that can absorb water like a sponge. Such cities can retain rainwater to the greatest extent possible. Specifically, it involves placing several plots of land within urban communities, constructed with absorbent materials, to act as sponges. These plots serve as recreational parks for citizens during normal times and as water storage areas during heavy rains. Whether it's muddy ground, grassland, forest, or lakes, they can absorb large amounts of rainwater.
[0003] However, existing permeable facilities for sponge cities gradually lose their permeability and structural durability due to factors such as silt blockage and external pressure during long-term use, making it difficult to adapt to varying rainfall intensities and sponge city usage scenarios. Therefore, we have introduced a permeable concrete surface layer for sponge city construction. Utility Model Content
[0004] The main purpose of this utility model is to provide a permeable concrete surface layer for sponge city construction, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A permeable concrete surface layer for sponge city construction includes: a soil base layer, a subbase layer, a base layer, and a surface layer;
[0007] The subgrade includes a compacted plain soil layer, a geogrid layer, and a modified soil layer;
[0008] The cushion layer comprises a graded crushed stone cushion layer, a coarse sand transition layer, and a geotextile isolation layer;
[0009] The base layer includes a plain-colored permeable concrete base layer, a reinforcing mesh layer, and permeable pipe arrangement holes;
[0010] The surface layer comprises a colored permeable concrete layer, anti-slip ridges, and a protective coating.
[0011] Preferably, the geogrid layer is laid on top of the compacted subsoil layer, and the improved soil layer is laid on top of the geogrid layer.
[0012] The graded crushed stone cushion layer is laid on top of the improved soil layer, the coarse sand transition layer is laid on top of the graded crushed stone cushion layer, and the geotextile isolation layer is laid on top of the coarse sand transition layer.
[0013] The plain-colored permeable concrete base layer is poured on top of the geotextile isolation layer, the reinforcing mesh layer is laid on top of the plain-colored permeable concrete base layer, and the permeable pipe is arranged inside the plain-colored permeable concrete base layer.
[0014] The colored permeable concrete layer is poured on top of the plain permeable concrete base layer. Several anti-slip protrusions are provided, and all of the anti-slip protrusions are located on the top of the colored permeable concrete layer. The protective coating is sprayed onto the surface of the colored permeable concrete layer.
[0015] By adopting the above technical solution: the porous structure of the colored permeable concrete layer and the anti-slip ridge design, both water permeability and anti-slip properties are taken into account. After rainwater infiltrates quickly, it is guided by the plain-colored permeable concrete base layer and permeable pipes to achieve rapid rainwater infiltration, effectively reducing surface runoff and alleviating urban flooding problems.
[0016] The reinforcing mesh layer provides support for the base layer, while the compacted soil layer, geogrid layer, and improved soil layer work together to enhance soil stability. The graded crushed stone cushion layer and coarse sand transition layer improve the overall bearing capacity, making the permeable concrete surface structure stable, resistant to external force damage during long-term use, and highly durable.
[0017] The graded crushed stone cushion layer and the coarse sand transition layer intercept impurities, and the geotextile isolation layer prevents material mixing. The infiltrated rainwater is filtered and purified in multiple stages to reduce pollutants entering the groundwater and improve the quality of the urban water environment.
[0018] Rainwater seeps into the soil layer in an orderly manner, replenishing groundwater resources, improving soil properties, promoting vegetation growth, and fostering a virtuous cycle in the urban ecosystem, thus providing strong support for the construction of sponge cities.
[0019] Preferably, the compacted soil layer is compacted in layers, with adjacent compacted surfaces overlapping each other.
[0020] By adopting the above technical solution, the density of the compacted soil layer increases layer by layer through layer-by-layer compaction, eliminating soil voids. The overlapping of adjacent compacted surfaces forms an interlocking structure, improving the overall density and providing a solid and stable foundation for the upper structure, effectively dispersing the road load.
[0021] Preferably, the geogrid layer is a biaxially oriented plastic geogrid, and the edge of the geogrid layer is fixed to the compacted soil layer by anchors.
[0022] By adopting the above technical solution, the biaxially oriented plastic geogrid has high tensile strength in both the longitudinal and transverse directions, and it is tightly interlocked with the compacted soil layer. After being fixed by anchors, it effectively restricts soil displacement, prevents landslides and collapses, improves soil stability, and ensures the stability of the permeable concrete surface foundation.
[0023] Preferably, the reinforcing mesh layer is composed of crisscrossing steel bars, and the intersections of the steel bars are fixed by welding.
[0024] By adopting the above technical solution, the crisscrossing steel bars form a three-dimensional frame, which is closely integrated with the plain-colored permeable concrete base layer to form a high-strength load-bearing structure. The overall support strength is improved, effectively resisting vehicle rolling and heavy object impact, and ensuring that the permeable concrete surface layer maintains its structural integrity for a long time.
[0025] Preferably, the permeable pipe holes are arranged in a crisscross pattern of horizontal and vertical.
[0026] By adopting the above technical solution, a three-dimensional rainwater collection network is constructed by arranging permeable pipes horizontally and vertically, which expands the water collection area, can quickly collect rainwater from all directions and infiltrate downwards, improve drainage efficiency, and effectively reduce the risk of surface water accumulation during heavy rain, thus alleviating urban flooding.
[0027] Preferably, the anti-slip ridges are distributed in pairs at equal distances.
[0028] By adopting the above technical solution, the anti-slip ridges are distributed at equal intervals in pairs, forming a uniform friction distribution area on the permeable concrete surface. When pedestrians step on it, the force on the soles of their feet is balanced, the anti-slip effect is improved, and the risk of slipping is effectively reduced. Especially in rainy or wet environments, it provides reliable walking safety for pedestrians.
[0029] Compared with the prior art, the present invention has the following beneficial effects:
[0030] In this invention, rainwater is first received by the colored permeable concrete layer, whose porous structure ensures rapid infiltration. The anti-slip ridges on the surface ensure pedestrian safety without affecting permeability. Rainwater passing through the protective coating enters the plain-colored permeable concrete base layer. The reinforcing mesh layer, composed of longitudinally and transversely welded steel bars, provides stable support for the base layer and ensures structural strength. The permeable pipes, arranged horizontally and vertically within the perforated holes, quickly collect and guide rainwater. Rainwater continues to infiltrate into the subbase layer, where a graded crushed stone subbase layer and a coarse sand transition layer facilitate rainwater infiltration. The process involves filtering and intercepting impurities, using geotextile as an isolation layer to prevent mixing of materials from different layers, allowing a small amount of water to seep into the subgrade, compacting the subgrade soil layer in alternating layers, and fixing the geogrid layer with anchors to enhance soil stability. This improves soil properties, enabling rainwater to infiltrate in an orderly manner, replenishing groundwater, and alleviating urban flooding. This progressive and coordinated structure not only ensures the high permeability of the permeable concrete surface layer but also enhances its structural durability, reduces maintenance costs, and provides reliable technical support for sponge city construction. Attached Figure Description
[0031] Figure 1This is a schematic diagram of the overall structure of a permeable concrete surface layer for sponge city construction according to this utility model;
[0032] Figure 2 This is an exploded view of the structure of a permeable concrete surface layer for sponge city construction according to this utility model;
[0033] Figure 3 This is a schematic diagram of the soil base layer for a permeable concrete surface layer used in sponge city construction according to this utility model;
[0034] Figure 4 This is a schematic diagram of the structure of the subbase layer of a permeable concrete surface layer for sponge city construction according to this utility model;
[0035] Figure 5 This is a schematic diagram of the structure of the subbase layer of a permeable concrete surface layer for sponge city construction according to this utility model;
[0036] Figure 6 This is a schematic diagram of the surface layer of a permeable concrete surface layer for sponge city construction according to this utility model.
[0037] In the diagram: 1. Subgrade; 2. Subbase; 3. Base course; 4. Surface course; 11. Compacted subgrade; 12. Geogrid layer; 13. Improved soil layer; 21. Graded crushed stone subbase; 22. Coarse sand transition layer; 23. Geotextile isolation layer; 31. Plain permeable concrete base course; 32. Reinforcing mesh layer; 33. Permeable pipe layout holes; 41. Colored permeable concrete layer; 42. Anti-slip ridges; 43. Protective coating. Detailed Implementation
[0038] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0041] Please see Figure 1-6 This utility model provides a technical solution:
[0042] A permeable concrete surface layer for sponge city construction includes a soil base layer 1, a subbase layer 2, a base layer 3, and a surface layer 4;
[0043] The subgrade 1 includes a compacted plain soil layer 11, a geogrid layer 12, and a modified soil layer 13;
[0044] Subbase 2 includes a graded crushed stone subbase 21, a coarse sand transition layer 22, and a geotextile isolation layer 23;
[0045] The base layer 3 includes a plain-colored permeable concrete base layer 31, a reinforcing mesh layer 32, and permeable pipe arrangement holes 33;
[0046] The surface layer 4 includes a colored permeable concrete layer 41, anti-slip ridges 42, and a protective coating 43.
[0047] In this embodiment, the geogrid layer 12 is laid on top of the compacted subsoil layer 11, and the improved soil layer 13 is laid on top of the geogrid layer 12; the graded crushed stone cushion layer 21 is laid on top of the improved soil layer 13, the coarse sand transition layer 22 is laid on top of the graded crushed stone cushion layer 21, and the geotextile isolation layer 23 is laid on top of the coarse sand transition layer 22; the plain-colored permeable concrete base layer 31 is poured on top of the geotextile isolation layer 23, the reinforcing mesh layer 32 is laid on top of the plain-colored permeable concrete base layer 31, and the permeable pipes are arranged inside the plain-colored permeable concrete base layer 31; the colored permeable concrete layer 41 is poured on top of the plain-colored permeable concrete base layer 31, and the anti-slip protrusions... Several anti-slip protrusions 42 are provided, and all of them are located above the colored permeable concrete layer 41. A protective coating 43 is sprayed onto the surface of the colored permeable concrete layer 41. The subgrade compacted layer 11 is compacted in layers, with adjacent compacted surfaces overlapping each other. The geogrid layer 12 is a biaxial tensile plastic geogrid, and the edge of the geogrid layer 12 is fixed to the subgrade compacted layer 11 by anchor nails. The reinforcing mesh layer 32 is composed of crisscrossing steel bars, and the intersections of the steel bars are fixed by welding. The permeable pipe holes 33 are arranged in a horizontal and vertical cross pattern. Several anti-slip protrusions 42 are distributed in pairs at equal intervals.
[0048] It should be noted that this utility model is a permeable concrete surface layer for sponge city construction. During use, rainwater first permeates through the colored permeable concrete layer 41. The anti-slip ridges 42 do not affect permeability and increase walking safety. After passing through the protective coating 43, the rainwater enters the plain permeable concrete base layer 31 of the base layer 3. The reinforcing mesh layer 32 ensures the strength of the base layer. The permeable pipes laid in the permeable pipe arrangement holes 33 guide the water out. Then, the rainwater permeates to the cushion layer 2, and is further filtered by the graded crushed stone cushion layer 21 and the coarse sand transition layer 22. The geotextile isolation layer 23 prevents the mixing of different layer materials. Finally, a small amount of water seeps into the soil base layer 1. The compacted soil layer 11 provides stable support, the geogrid layer 12 enhances the soil stability, and the improved soil layer 13 improves the soil properties, realizing the effective infiltration and discharge of rainwater.
[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A permeable concrete surface layer for sponge city construction, characterized in that, include: Subbase (1), cushion layer (2), base course (3) and surface course (4); The soil base (1) includes a compacted soil layer (11), a geogrid layer (12), and a modified soil layer (13). The cushion layer (2) comprises a graded crushed stone cushion layer (21), a coarse sand transition layer (22), and a geotextile isolation layer (23). The base layer (3) includes a plain-colored permeable concrete base layer (31), a reinforcing mesh layer (32), and permeable pipe arrangement holes (33). The surface layer (4) comprises a colored permeable concrete layer (41), anti-slip ridges (42), and a protective coating (43).
2. The permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, The geogrid layer (12) is laid on top of the compacted soil layer (11), and the improved soil layer (13) is laid on top of the geogrid layer (12). The graded crushed stone cushion layer (21) is laid on top of the improved soil layer (13), the coarse sand transition layer (22) is laid on top of the graded crushed stone cushion layer (21), and the geotextile isolation layer (23) is laid on top of the coarse sand transition layer (22). The plain-colored permeable concrete base layer (31) is poured on top of the geotextile isolation layer (23), the reinforcing mesh layer (32) is laid on top of the plain-colored permeable concrete base layer (31), and the permeable pipe is arranged inside the plain-colored permeable concrete base layer (31). The colored permeable concrete layer (41) is poured on the plain permeable concrete base layer (31). Several anti-slip ridges (42) are provided, and all of the anti-slip ridges (42) are provided on the colored permeable concrete layer (41). The protective coating (43) is sprayed on the surface of the colored permeable concrete layer (41).
3. The permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, The compacted soil layer (11) is compacted in layers, with the compacted surfaces of adjacent layers overlapping each other.
4. The permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, The geogrid layer (12) is a biaxial tensile plastic geogrid, and the edge of the geogrid layer (12) is fixed to the compacted soil layer (11) by anchor nails.
5. The permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, The reinforcing mesh layer (32) is composed of crisscrossing steel bars, and the intersections of the steel bars are fixed by welding.
6. The permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, The permeable pipe arrangement holes (33) are arranged in a cross pattern of horizontal and vertical directions.
7. A permeable concrete surface layer for sponge city construction according to claim 1, characterized in that, Several of the anti-slip ridges (42) are distributed in pairs at equal distances.