Permeable road with rapid infiltration efficiency
By combining a permeable surface layer, base layer, subbase layer, and permeable filter element, the problem of the disconnect between the design and application effect of permeable road infiltration function is solved, achieving rapid rainwater infiltration and improving the strength and durability of the road structure.
Patent Information
- Application Number
- CN202322744800.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-12
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2033-10-12
AI Technical Summary
The permeable pavement suffers from a disconnect between its permeability design and application, resulting in slow rainwater infiltration and consequently poor strength and durability.
The system adopts a combined structure of permeable surface layer, permeable base layer, permeable cushion layer and permeable filter element. Geotextile is installed under the permeable filter element. The permeable filter element is composed of permeable concrete filter element, crushed stone, cement and steel fiber, arranged in a grid pattern and filled with fine crushed stone. The permeable surface layer and base layer are composed of permeable concrete and permeable cement stabilized crushed stone.
This technology enables rapid rainwater infiltration into permeable roads, enhances structural strength and durability, eliminates the need for additional drainage pipes, and improves permeability and overall road performance.
Smart Images
Figure CN223805365U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to city municipal facilities and road construction technical field, especially a kind of water-permeable road with rapid infiltration efficiency. BACKGROUND
[0002] As an important measure in the construction of sponge city, water-permeable road plays a key role in alleviating urban waterlogging problems. However, there are contradictions between the related researches on the influencing factors of water-permeable road, and the correlation research between various performances is insufficient. The research on water-permeable pavement materials alone has certain limitations.
[0003] Currently, water-permeable road mainly faces two problems in popularization and application. First, the permeation function design of water-permeable road is disconnected with the application effect, and most of them can only discharge and collect rainwater through urban pipelines. Second, the rainwater in water-permeable road cannot be further infiltrated quickly at the structural level, resulting in poor strength and durability performance of water-permeable road. In the construction of sponge city, only the base layer, cushion layer, soil foundation and other structures are laid in sequence to form a whole, can form good channels for infiltration, detention, storage and drainage. SUMMARY
[0004] To solve the above problems, the utility model aims to provide a water-permeable road with rapid infiltration efficiency to solve the problems of disconnection between permeation function design and application effect of water-permeable road and slow infiltration of rainwater in water-permeable road.
[0005] To achieve the above purpose, the utility model adopts the technical scheme of a water-permeable road with rapid infiltration efficiency, which comprises a water-permeable surface layer, a water-permeable base layer, a water-permeable cushion layer and a water-permeable filter core. The water-permeable surface layer, water-permeable base layer, water-permeable cushion layer and water-permeable filter core are distributed in sequence from top to bottom.
[0006] The water-permeable surface layer is a water-permeable concrete surface layer.
[0007] The water-permeable base layer is a water-permeable cement stabilized gravel base.
[0008] The water-permeable cushion layer is a coarse sand cushion layer, and geotextile is arranged between the lower surface of the water-permeable cushion layer and the upper surface of the water-permeable filter core.
[0009] The water-permeable filter core is a water-permeable concrete filter core, the outer surface of which is wrapped with geotextile, and the bottom and periphery are filled with fine gravel (5).
[0010] The utility model has the advantages of:
[0011] Permeable pavement structures do not require additional drainage pipes, ensuring that the permeability design matches the application effect. Geotextile is installed on the lower surface of the permeable cushion layer and the outer surface of the permeable filter element, preventing silt from entering the permeable pavement and clogging the pores of the filter element, thus affecting infiltration efficiency and durability, without affecting rainwater infiltration. By installing a permeable filter element under the permeable cushion layer, rainwater in the permeable pavement is diverted to deeper soil layers, allowing rainwater to infiltrate more quickly and further enhancing the permeability performance of the permeable pavement, and improving the structural strength and durability of the permeable pavement. Attached Figure Description
[0012] Fig. 1 This is a longitudinal cross-sectional view of a permeable road with rapid infiltration efficiency according to the present invention.
[0013] Fig. 2 This is a schematic diagram of the arrangement of permeable filter elements in a permeable road with rapid infiltration efficiency according to the present invention.
[0014] In the picture:
[0015] 1. Permeable surface layer; 2. Permeable base layer; 3. Permeable subbase layer
[0016] 4. Permeable filter element; 5. Fine gravel; 6. Geotextile. Detailed Implementation
[0017] The following is a detailed description of a permeable road with rapid infiltration efficiency according to the present invention, with reference to the accompanying drawings.
[0018] like Figs. 1-2 As shown, a permeable road with rapid infiltration efficiency includes a permeable surface layer 1, a permeable base layer 2, a permeable cushion layer 3, a permeable filter element 4, fine gravel 5, and geotextile 6. The permeable surface layer 1, permeable base layer 2, permeable cushion layer 3, geotextile 6, and permeable filter element 4 are distributed sequentially from top to bottom.
[0019] The permeable filter element 4 is a permeable concrete filter element, mainly composed of crushed stone, cement, and steel fiber, with a lime-to-stone ratio of 0.15, a water-to-stone ratio of 0.06–0.08, and a steel fiber content of 1–3%. The permeable filter element 4 has a diameter of 10 cm and a length of 350 cm, arranged in a grid pattern with a spacing of 1–2 m. Wells are drilled under the permeable cushion layer 3 using a drilling machine. The diameter of the wells is slightly larger than that of the permeable filter element 4, and fine crushed stone 5 is laid at the bottom of the wells. After the wells are constructed, the permeable filter element 4, with its outer surface wrapped in geotextile 6, is placed in the well, and the permeable filter element 4 is surrounded by fine crushed stone 5. After the permeable filter element 4 is constructed, geotextile 6 is placed on top, and then the permeable road surface is constructed sequentially.
[0020] The water-permeable surface layer 1 is a water-permeable concrete surface layer, with a thickness of 10 cm, and materials including coarse aggregate, cement, water, and reinforcing agent, with mass fractions of 65%, 25%, 8%, and 2% respectively; the water-permeable base layer 2 is a water-permeable cement stabilized macadam base layer, with a thickness of 40 cm, and materials including coarse aggregate, cement, water, and reinforcing agent, with mass fractions of 85%, 10%, 4%, and 1% respectively; and the water-permeable cushion layer 3 is a coarse sand cushion layer, with a thickness of 15 cm, and using coarse sand with a particle size of 0.5-1 mm.
[0021] In use, rainwater is preferentially infiltrated into the water-permeable surface layer 1, the water-permeable base layer 2, and the water-permeable cushion layer 3 of the water-permeable road, and the high porosity and permeability of the water-permeable concrete enable the rainwater to quickly infiltrate and reduce the amount of water on the road surface. By arranging the water-permeable filter core 4 under the water-permeable cushion layer 3 of the water-permeable road, the rainwater in the water-permeable road is directed to the deep soil, so that the rainwater in the water-permeable road further quickly infiltrates, the permeability of the water-permeable road is enhanced, and the structural strength and durability of the water-permeable road are improved.
Claims
1. A water-permeable road with rapid infiltration efficiency, comprising a water-permeable surface layer (1), a water-permeable base layer (2), a water-permeable cushion layer (3), a water-permeable filter core (4), fine gravel (5), and geotextile (6); characterized in that: The water permeable surface layer (1), the water permeable base layer (2), the water permeable cushion layer (3), the geotextile (6) and the water permeable filter core (4) are sequentially arranged from top to bottom.
2. A permeable pavement with rapid infiltration efficiency according to claim 1, characterized in that: [The pavement is permeable...] The water permeable surface layer (1) has a thickness of 10 cm, the water permeable base layer (2) has a thickness of 40 cm, and the water permeable cushion layer (3) has a thickness of 15 cm.
3. The water-permeable road with rapid infiltration efficiency according to claim 1, characterized in that: The water permeable filter core (4) has a length of more than 350 cm and a diameter of 10±2 cm, the outer surface of the water permeable filter core (4) is wrapped with the geotextile (6), the bottom and the periphery of the water permeable filter core (4) are filled with fine gravel (5), and the water permeable filter core (4) is arranged in a cross-shaped manner with a spacing of 1-2 m.