A sponge type road pavement structure and a construction method thereof
By designing drainage layer components, including pipes, gravel frames, and diversion elements, in sponge-type roads, the problem of rainwater accumulation during continuous rainy weather is solved, achieving efficient drainage and improved permeability of sponge-type roads.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WENZHOU ZHENHUA CONSTR CO LTD
- Filing Date
- 2024-07-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing sponge-type roads are prone to rainwater accumulation during continuous rainy weather, leading to reduced permeability.
A sponge-type road pavement structure was designed, including a permeable surface layer, a permeable subbase layer, a leveling layer, a coarse sand layer, and a base layer. By setting up drainage layer components and utilizing components such as pipes, gravel frames, diversion plates, and diversion parts, multiple drainage pathways are achieved, thereby improving rainwater drainage efficiency.
It effectively improves the permeability of sponge-type roads, avoids rainwater accumulation, enhances drainage efficiency, and ensures that roads maintain good permeability under continuous rainy weather.
Smart Images
Figure CN118653336B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sponge road technology, and more specifically, to a sponge road paving structure and its construction method. Background Technology
[0002] Sponge-type roads are a new type of road with good water permeability. They can quickly absorb surface water like a sponge, achieving natural storage, natural infiltration, and natural purification, thereby effectively controlling rainwater runoff. Compared with traditional roads, sponge-type roads mainly change in road surface materials, greening forms, and drainage methods.
[0003] Sponge roads are traditional impermeable pavements that are replaced with permeable pavements, such as permeable asphalt, permeable concrete, and permeable bricks. These materials have good permeability, allowing rainwater to quickly infiltrate into the ground. The construction of sponge roads is of great significance. It can reduce the pressure of urban flood control and drainage, solve the problem of road water accumulation, prevent rainwater resources from being wasted, reduce urban surface runoff pollution, promote the effective use of rainwater resources, and improve the city's stormwater management capabilities.
[0004] Its construction requires comprehensive consideration of multiple aspects such as road planning and design, material selection, and facility layout. At the same time, it is necessary to combine local climate conditions, topography, drainage system and other actual conditions to carry out site-specific design and construction. At present, many cities are actively promoting the construction and transformation of sponge roads.
[0005] Existing sponge-type roads typically utilize permeable materials such as permeable asphalt, permeable concrete, and permeable bricks to achieve permeability, facilitating rainwater absorption and keeping the road surface dry. The absorbed rainwater is then drained into groundwater or piped to roadside flowerbeds for reuse. However, during periods of continuous rainfall, a large amount of rainwater accumulates inside the sponge-type road during the continuous drainage process. Relying solely on groundwater drainage or piped drainage is slow, easily leading to water accumulation inside the sponge-type road and a decrease in permeability. Therefore, we propose a sponge-type road pavement structure and its construction method. Summary of the Invention
[0006] The purpose of this invention is to provide a sponge-type road pavement structure and its construction method to solve the technical problem that during continuous rainy weather, a large amount of rainwater tends to accumulate inside the sponge-type road, resulting in poor permeability.
[0007] To solve the above technical problems, the present invention provides the following technical solution: a sponge-type road pavement structure, including a permeable surface layer, a permeable cushion layer below the permeable surface layer, a leveling layer below the permeable cushion layer, a coarse sand layer below the leveling layer, a base layer (6) below the coarse sand layer, and a drainage layer component between the coarse sand layer (4) and the base layer;
[0008] The drainage layer assembly includes multiple pipes disposed above the base layer. The sidewalls of the pipes are provided with a layer of broken bricks and a frame of broken stones. A diversion plate is disposed above the pipes. A drainage channel is formed between the top of the pipes and the bottom of the diversion plate. A barrier net is disposed in the drainage channel.
[0009] The top surface of the crushed stone frame is provided with multiple crushed stone bin channels, and the crushed stone bin channels are provided with crushed stone layers and diversion components;
[0010] The drainage component includes multiple drainage columns disposed inside the crushed stone chamber channel. A fixed column is connected to the circumferential side wall of each drainage column. The other end of the fixed column is connected to the circumferential side wall of another drainage column. An expansion column is connected to the circumferential side wall of the fixed column. The other end of the expansion column is connected to the circumferential side wall of the fixed column of another drainage column.
[0011] Preferably, the permeable surface layer is formed by laying permeable asphalt material, the permeable cushion layer is formed by laying graded crushed stone material, and the leveling layer is formed by laying permeable cement mortar material.
[0012] Preferably, the top surface of the base layer is provided with a semi-circular arc-shaped groove that matches the bottom structure of the pipe, and a plurality of support frames are provided in the groove, with the pipe being provided on the top surface of the support frames.
[0013] Preferably, the top surface of the crushed stone frame is configured as a raised arc structure, and the top surface of the crushed stone layer is configured as a raised arc structure that matches the top surface structure of the crushed stone frame.
[0014] Preferably, the top surface of the diversion plate is an arc-shaped structure, the inner sidewall of the diversion plate is connected to the blocking mesh, and the other side of the blocking mesh is connected to the circumferential sidewall of the pipe.
[0015] Preferably, the pipe has a semi-circular arc pipe structure, and the upper side of the pipe forms a water inlet channel through the barrier net.
[0016] Preferably, the diversion column has multiple diversion grooves and circular grooves from top to bottom.
[0017] Preferably, the fixing column and the expansion column are semi-circular ring structures, and the circumferential sidewall of the fixing column is tightly welded to the end of the expansion column.
[0018] Preferably, there are three drainage channels, which are distributed in a circular array on the circumferential sidewall of the drainage column. The inlet of the drainage channel is located on the circumferential sidewall of the drainage column, and the inlet of the drainage channel extends into the internal space from small to large.
[0019] Preferably, the construction method of the sponge-type road pavement structure includes the following steps:
[0020] S1. Pipe laying: flatten and compact the top surface of the base layer, install the pipe on the top surface of the base layer, and connect the pipe output end to the external drainage pipe.
[0021] S2. Sand frame laying: Install the crushed stone frame on the side wall of the pipe, place the diversion device inside the crushed stone chamber channel, connect the bottom of the diversion device to the top surface of the base layer, and then fill the crushed stone chamber channel with crushed stone to form a crushed stone layer.
[0022] S3. Laying the crushed brick layer: Lay crushed brick material on the top surface of the crushed stone layer of the crushed stone frame to form a crushed brick layer. Install a diversion plate on the top surface of the crushed brick layer so that the blocking net presses on the crushed brick layer to block the crushed brick material and prevent it from entering the pipe. Finally, continue to fill the side wall of the diversion plate with crushed brick material until it is flush with the top side wall of the diversion plate to complete the laying of the crushed brick layer.
[0023] S4. Coarse sand laying: Coarse sand is laid on top of the crushed brick layer. The coarse sand covers the diversion plate and the crushed stone frame. The top surface of the coarse sand is leveled and compacted to form a coarse sand layer.
[0024] S5. Upper paving: Permeable cement mortar is laid on top of the coarse sand layer to level it and form a leveling layer. Graded crushed stone is then laid on top of the leveling layer to form a permeable cushion layer with good permeability and load-bearing capacity. Finally, permeable asphalt is laid on top of the permeable cushion layer to form a permeable surface layer, completing the paving of the sponge road.
[0025] Compared with the prior art, the beneficial effects of the present invention are:
[0026] 1. This invention, through the design of a drainage layer component, can guide a large amount of rainwater into the pipe for discharge. When the sponge-type road encounters continuous rain, the rainwater flows through the permeable surface layer into the permeable cushion layer below, and further into the leveling layer and coarse sand layer. The rainwater is then guided into the drainage channel by the diversion plate below the coarse sand layer until it flows into the pipe and is discharged. Another part of the rainwater flows into the base layer through the crushed stone layer in the crushed stone bin channel and into the groundwater. Through multiple drainage methods, the rainwater absorbed by the sponge-type road can be effectively discharged, improving the permeability of the sponge-type road and solving the problem that a large amount of rainwater tends to accumulate inside the sponge-type road during continuous rainy weather, leading to a decrease in its permeability.
[0027] 2. This invention also designs the top surface of the crushed stone frame and the top surface of the crushed stone layer as a raised arc structure, and the top surface of the diversion plate as an arc-shaped surface structure. Through their cooperation, rainwater flowing down from the coarse sand layer can be quickly guided into the crushed brick layer and discharged into the pipe through the water inlet channel. This greatly improves the drainage efficiency of the sponge road and avoids water accumulation inside the sponge road, which affects its permeability. It further solves the problem that during continuous rainy weather, a large amount of rainwater tends to accumulate inside the sponge road, leading to poor permeability.
[0028] 3. This invention also expands the spatial extensibility of the drainage components by connecting multiple drainage columns with fixed and expanding columns, increasing the gaps between the gravel in the gravel layer inside the gravel bin channel, thereby increasing the speed of rainwater drainage. Furthermore, three drainage channels and circular grooves are designed on the drainage columns, allowing rainwater to flow into the base layer and drain into the groundwater, further improving the drainage efficiency of the gravel bin channel. This ensures that the interior of the sponge road is not prone to water accumulation, improves the permeability of the sponge road, and further solves the problem that during continuous rainy weather, a large amount of rainwater tends to accumulate inside the sponge road, leading to a decrease in its permeability. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0030] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;
[0031] Figure 3 This is a schematic diagram showing the overall structure of the present invention broken down;
[0032] Figure 4 This is a schematic diagram of the drainage layer assembly structure of the present invention;
[0033] Figure 5 This is an enlarged schematic diagram of the barrier mesh structure of the present invention;
[0034] Figure 6 This is a schematic diagram of the crushed stone frame structure of the present invention;
[0035] Figure 7 This is a schematic diagram showing the internal structure of the crushed stone frame of the present invention.
[0036] Figure 8 This is an enlarged schematic diagram of the drainage component structure of the present invention.
[0037] Explanation of the labels in the diagram:
[0038] 1. Permeable surface layer; 2. Permeable subbase layer; 3. Leveling layer; 4. Coarse sand layer; 5. Drainage layer components; 6. Base layer;
[0039] 501. Pipeline; 502. Crushed brick layer; 503. Crushed stone frame; 504. Diversion plate; 505. Crushed stone bin channel; 506. Crushed stone layer; 507. Diversion component; 5071. Diversion column; 5072. Fixing column; 5073. Expansion column; 5074. Diversion trough; 5075. Circular trough; 508. Barrier net; 509. Support frame. Detailed Implementation
[0040] like Figures 1 to 8 As shown, the present invention provides a sponge-type road pavement structure, including a permeable surface layer 1, a permeable cushion layer 2, a leveling layer 3, a coarse sand layer 4, a drainage layer assembly 5, and a base layer 6;
[0041] In an embodiment of the present invention, a permeable cushion layer 2 is disposed below the permeable surface layer 1, a leveling layer 3 is disposed below the permeable cushion layer 2, a coarse sand layer 4 is disposed below the leveling layer 3, a base layer 6 is disposed below the coarse sand layer 4, and a drainage layer assembly 5 is disposed between the coarse sand layer 4 and the base layer 6. The drainage layer assembly 5 includes a plurality of pipes 501 disposed above the base layer 6. A broken brick layer 502 and a crushed stone frame 503 are disposed on the sidewalls of the pipes 501. A diversion plate 504 is disposed above the pipes 501, and a drainage channel is formed between the top of the pipes 501 and the bottom of the diversion plate 504. A blocking net 508 is disposed in the drainage channel. The blocking net 508 is a stainless steel mesh structure used to prevent broken bricks from the broken brick layer 502 from entering the pipes 501. The top surface of the crushed stone frame 503 is provided with... Multiple crushed stone storage channels 505 are provided, and crushed stone layers 506 and diversion components 507 are set inside the crushed stone storage channels 505. The present invention, through the design of the drainage layer component 5, can guide a large amount of rainwater into the pipe 501 for discharge. When the sponge road encounters continuous rain, the rainwater flows through the permeable surface layer 1 into the permeable cushion layer 2 below, and further into the leveling layer 3 and coarse sand layer 4. The rainwater is guided into the drainage channel by the diversion plate 504 below the coarse sand layer 4 until it flows into the pipe 501 and is discharged. Another part of the rainwater flows into the base layer 6 through the crushed stone layer 506 in the crushed stone storage channel 505 and flows into the groundwater. Through multiple drainage methods, the rainwater absorbed by the sponge road can be effectively discharged, improving the permeability of the sponge road.
[0042] In an embodiment of the present invention, the permeable surface layer 1 is formed by laying permeable asphalt material, which allows rainwater to quickly infiltrate and reduce road surface water accumulation. The permeable subbase layer 2 is formed by laying graded crushed stone material, which is composed of aggregates of various sizes and has good permeability and load-bearing capacity. The leveling layer 3 is formed by laying permeable cement mortar material, which is a type of cement mortar with good permeability. The top surface of the base layer 6 is provided with a semi-circular arc-shaped groove that matches the bottom structure of the pipe 501. Multiple support frames 509 are provided in the groove, and the pipe 501 is provided on the top surface of the support frame 509.
[0043] In an embodiment of the present invention, the top surface of the crushed stone frame 503 is configured as a raised arc structure, the top surface of the crushed stone layer 506 is configured as a raised arc structure to match the top surface of the crushed stone frame 503, the top surface of the diversion plate 504 is an arc-shaped surface structure, the inner side wall of the diversion plate 504 is connected to a blocking net 508, the other side of the blocking net 508 is connected to the circumferential side wall of the pipe 501, the pipe 501 is a semi-circular arc pipe structure, and a water inlet channel is formed on the upper side of the pipe 501 through the blocking net 508; the present invention, by designing the top surfaces of the crushed stone frame 503 and the crushed stone layer 506 as raised arc structures, and the top surface of the diversion plate 504 as an arc-shaped surface structure, can quickly guide the rainwater flowing down from the coarse sand layer 4 into the crushed brick layer 502, and then flow into the pipe 501 through the water inlet channel for discharge, greatly improving the drainage efficiency of the sponge road and avoiding water accumulation inside the sponge road that would affect its permeability.
[0044] In another embodiment of the present invention, the drainage component 507 includes a plurality of drainage columns 5071 disposed inside the crushed stone chamber channel 505. A fixed column 5072 is connected to the circumferential sidewall of each drainage column 5071. The other end of the fixed column 5072 is connected to the circumferential sidewall of another drainage column 5071. An expansion column 5073 is connected to the circumferential sidewall of the fixed column 5072, and the other end of the expansion column 5073 is connected to the circumferential sidewall of the fixed column 5072 on the sidewall of another drainage column 5071. The drainage column 5071 has a plurality of drainage grooves 5074 and circular grooves 5075 formed from top to bottom. The fixed column 5072 and the expansion column 5073 have a semi-circular ring structure. The circumferential sidewall of the fixed column 5072 is tightly welded to the end of the expansion column 5073. There are three drainage grooves 5074, distributed in a circular array on the circumferential sidewall of the drainage column 5071. The inlet 74 is located on the circumferential sidewall of the diversion column 5071. The inlet of the diversion channel 5074 extends from small to large into the internal space, which can prevent gravel from entering and clogging the interior of the diversion channel 5074. This invention expands the spatial extensibility of the diversion component 507 by connecting multiple diversion columns 5071 with fixed columns 5072 and expansion columns 5073. This increases the gaps between the gravel in the gravel layer 506 inside the gravel bin channel 505, thereby increasing the speed of rainwater drainage. Furthermore, three diversion channels 5074 and circular channels 5075 are designed on the diversion column 5071. Rainwater can flow into the base layer 6 through the diversion channels 5074 and circular channels 5075 and be discharged into the groundwater, further improving the drainage efficiency of the gravel bin channel 505, ensuring that the interior of the sponge road is not prone to water accumulation, and improving the permeability of the sponge road.
[0045] This invention provides a construction method for a sponge-type road pavement structure, comprising the following steps:
[0046] S1. Pipe laying: flatten and compact the top surface of the base layer 6, install pipe 501 on the top surface of the base layer 6, and connect the output end of pipe 501 to the external drainage pipe.
[0047] S2. Sand frame laying: Install the crushed stone frame 503 on the side wall of the pipe 501, place the diversion component 507 inside the crushed stone chamber channel 505, connect the bottom of the diversion component 507 to the top surface of the base layer 6, and then fill the crushed stone chamber channel 505 with crushed stone to form a crushed stone layer 506.
[0048] S3. Laying the crushed brick layer: Crushed brick material is laid on the top surface of the crushed stone layer 506 of the crushed stone frame 503 to form a crushed brick layer 502. A diversion plate 504 is installed on the top surface of the crushed brick layer 502 so that the blocking net 508 presses on the crushed brick layer 502 to block the crushed brick material and prevent it from entering the pipe 501. Finally, crushed brick material is filled into the side wall of the diversion plate 504 until it is flush with the top side wall of the diversion plate 504, thus completing the laying of the crushed brick layer 502.
[0049] S4. Coarse sand laying: Coarse sand is laid on the top surface of the crushed brick layer 502. The coarse sand covers the diversion plate 504 and the crushed stone frame 503. The top surface of the coarse sand is leveled and compacted to form coarse sand layer 4.
[0050] S5. Upper paving: Permeable cement mortar is laid on the top surface of coarse sand layer 4 to level it and form leveling layer 3. Graded crushed stone is then laid on the top surface of leveling layer 3 to form permeable cushion layer 2 with good permeability and load-bearing capacity. Finally, permeable asphalt is laid on the top surface of permeable cushion layer 2 to form permeable surface layer 1, completing the paving of the sponge road.
[0051] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.
Claims
1. A sponge-type road pavement structure, characterized in that, It includes a permeable surface layer (1), a permeable cushion layer (2) is provided below the permeable surface layer (1), a leveling layer (3) is provided below the permeable cushion layer (2), a coarse sand layer (4) is provided below the leveling layer (3), a base layer (6) is provided below the coarse sand layer (4), and a drainage layer component (5) is provided between the coarse sand layer (4) and the base layer (6). The drainage layer assembly (5) includes a plurality of pipes (501) disposed above the base layer (6). The sidewalls of the pipes (501) are provided with a layer of broken bricks (502) and a frame of crushed stone (503). A diversion plate (504) is disposed above the pipes (501). A drainage channel is formed between the top of the pipes (501) and the bottom of the diversion plate (504). A barrier net (508) is disposed in the drainage channel. The top surface of the crushed stone frame (503) is provided with multiple crushed stone bin channels (505). The crushed stone bin channels (505) are provided with crushed stone layers (506) and drainage components (507) inside. Rainwater can flow into the base layer (6) through the crushed stone layers (506) in the crushed stone bin channels (505). The drainage component (507) includes a plurality of drainage columns (5071) disposed inside the crushed stone chamber channel (505). A fixed column (5072) is connected to the circumferential side wall of the drainage column (5071). The other end of the fixed column (5072) is connected to the circumferential side wall of another drainage column (5071). An expansion column (5073) is connected to the circumferential side wall of the fixed column (5072) of another drainage column (5071). The other end of the expansion column (5073) is connected to the circumferential side wall of the fixed column (5072) of another drainage column (5071).
2. The sponge-type road pavement structure according to claim 1, characterized in that, The permeable surface layer (1) is formed by laying permeable asphalt material, the permeable cushion layer (2) is formed by laying graded crushed stone material, and the leveling layer (3) is formed by laying permeable cement mortar material.
3. The sponge-type road pavement structure according to claim 2, characterized in that, The top surface of the base layer (6) is provided with a semi-circular arc-shaped groove that matches the bottom structure of the pipe (501). Multiple support frames (509) are provided in the groove, and the pipe (501) is provided on the top surface of the support frame (509).
4. The sponge-type road pavement structure according to claim 3, characterized in that, The top surface of the crushed stone frame (503) is configured as a raised arc structure, and the top surface of the crushed stone layer (506) is configured as a raised arc structure that matches the top surface structure of the crushed stone frame (503).
5. The sponge-type road pavement structure according to claim 4, characterized in that, The top surface of the diversion plate (504) is an arc-shaped structure. The inner side wall of the diversion plate (504) is connected to the blocking net (508), and the other side of the blocking net (508) is connected to the circumferential side wall of the pipe (501).
6. The sponge-type road pavement structure according to claim 5, characterized in that, The pipe (501) has a semi-circular arc pipe structure, and a water inlet channel is formed on the upper side of the pipe (501) through the barrier net (508).
7. The sponge-type road pavement structure according to claim 6, characterized in that, The diversion column (5071) has multiple diversion grooves (5074) and circular grooves (5075) from top to bottom.
8. The sponge-type road pavement structure according to claim 7, characterized in that, The fixed column (5072) and the expansion column (5073) are semi-circular ring structures, and the circumferential sidewall of the fixed column (5072) is tightly welded to the end of the expansion column (5073).
9. The sponge-type road pavement structure according to claim 8, characterized in that, There are three drainage channels (5074), which are distributed in a circular array on the circumferential sidewall of the drainage column (5071). The inlet of the drainage channel (5074) is located on the circumferential sidewall of the drainage column (5071), and the inlet of the drainage channel (5074) extends into the internal space from small to large.
10. The construction method of the sponge-type road pavement structure according to claim 9, characterized in that, Includes the following steps: S1. Pipe laying: flatten and compact the top surface of the base layer (6), install the pipe (501) on the top surface of the base layer (6), and connect the output end of the pipe (501) to the external drainage pipe. S2. Sand frame laying: Install the crushed stone frame (503) on the side wall of the pipe (501), place the diversion part (507) inside the crushed stone bin channel (505), connect the bottom of the diversion part (507) to the top surface of the base layer (6), and then fill the crushed stone bin channel (505) with crushed stone to form a crushed stone layer (506). S3. Laying the crushed brick layer: Crushed brick material is laid on the top surface of the crushed stone layer (506) of the crushed stone frame (503) to form a crushed brick layer (502). A diversion plate (504) is installed on the top surface of the crushed brick layer (502) so that the blocking net (508) is pressed on the crushed brick layer (502) to block the crushed brick material and prevent it from entering the pipe (501). Finally, crushed brick material is filled on the side wall of the diversion plate (504) until it is flush with the top side wall of the diversion plate (504) to complete the laying of the crushed brick layer (502). S4. Coarse sand laying: Coarse sand is laid on the top surface of the broken brick layer (502). The coarse sand covers the diversion plate (504) and the crushed stone frame (503). The top surface of the coarse sand is flattened and compacted to form a coarse sand layer (4). S5. Upper paving: Permeable cement mortar is laid on the top surface of the coarse sand layer (4) to level it and form a leveling layer (3). Graded crushed stone is then laid on the top surface of the leveling layer (3) to form a permeable cushion layer (2) with good permeability and load-bearing capacity. Finally, permeable asphalt is laid on the top surface of the permeable cushion layer (2) to form a permeable surface layer (1), thus completing the paving of the sponge road.