Water storage and anti-slip pedestrian pavement

Abstract

The present invention relates to a water-storing and anti-slip pedestrian road surface, which includes a waterproof and water-isolating layer arranged on a roadbed. A water-storing layer is arranged above the waterproof and water-isolating layer, and a permeable road surface is laid above the water-storing layer. A number of anti-slip devices are sequentially arranged along the extending direction of the permeable road surface, and each anti-slip device extends into the water-storing layer. After the anti-slip device encounters water, its top protrudes above the permeable road surface to play an anti-slip role, and the anti-slip device can reset after losing water. The anti-slip device of the present invention has the function of rainwater protrusion and water-loss reset, so as to achieve the purpose of anti-slip on rainy days. The water-storing layer of the present invention can store rainwater, reduce the impact of rainwater on the roadbed, and the stored rainwater can be used for the urban greening system, promoting the utilization of rainwater resources.

Description

Technical Field

[0001] The present invention belongs to the technical field of road water storage and anti-slip structures, and particularly relates to a water storage and anti-slip sidewalk surface. Background Art

[0002] Sponge City is a new generation of urban rainwater management concept. Instead of draining some rainwater away, it retains it, which can maximize the accumulation, infiltration, and purification of rainwater in urban areas, promote the utilization of rainwater resources and ecological environmental protection, and also reduce the risk of waterlogging. The basic concept of "Sponge City" is to retain more rainwater and drain less.

[0003] Most current sidewalks have a structure of laying sidewalk floor tiles on sand, and this structure does not have the ability to store water. During rain, surface water accumulation easily occurs, resulting in slipperiness and posing a hidden danger to the safe travel of pedestrians. Summary of the Invention

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide a water storage and anti-slip sidewalk surface. Through the setting of a water storage layer, the purpose of storing rainwater can be achieved, and through the setting of an anti-slip device, the purpose of anti-slip can be achieved, reducing the problem of pedestrians falling due to the slippery road surface.

[0005] According to one aspect of the present invention, there is provided a water storage and anti-slip sidewalk surface, including a waterproof and water isolation layer provided on a roadbed. Above the waterproof and water isolation layer, there is a water storage layer, and above the water storage layer, there is a permeable road surface; along the extension direction of the permeable road surface, a number of anti-slip devices are sequentially arranged. Each anti-slip device extends into the water storage layer. After the anti-slip device encounters water, its top can protrude above the permeable road surface to play an anti-slip role, and after the anti-slip device loses water, it can reset.

[0006] Further, the water storage layer includes a first water storage layer laid on the waterproof and water isolation layer. On one side of the first water storage layer, there is a water storage pool. On the side wall of the water storage pool, there is a sand interception structure, and at the bottom of the water storage pool, there is a water outlet hole.

[0007] Further, the sand interception structure includes a permeable structure provided on one side of the first water storage layer. On the side of the permeable structure away from the first water storage layer, there is a sieve plate, and a number of sieve holes are provided on the sieve plate.

[0008] Further, the waterproof and water isolation layer includes a waterproof layer, a water isolation layer, and a slurry seal layer laid on the roadbed in sequence from bottom to top. And on the upper surface of the slurry seal layer, there is a slope that slopes from the side away from the water storage pool to the water storage pool and slopes downward in the direction from the side away from the water storage pool to the water storage pool.

[0009] Further, a second water storage layer is provided above the first water storage layer. A first sandy soil layer is provided between the second water storage layer and the first water storage layer, and the first sandy soil layer extends above the water storage tank. A second sandy soil layer is provided between the second water storage layer and the permeable road surface, and the anti-slip device extends into the second water storage layer.

[0010] Further, each anti-slip device includes an installation groove extending from the permeable road surface into the second water storage layer. An expansion structure that expands when encountering water is provided at the bottom of each installation groove. A connecting rod is provided above each expansion structure. An anti-slip block is connected to the upper part of each connecting rod. Each connecting rod is connected to a reset structure, and the reset structure is used to drive the connecting rod to reset after the expansion structure loses water.

[0011] Further, each anti-slip device includes an installation groove extending from the permeable road surface into the water storage layer. An expansion structure that expands when encountering water is provided at the bottom of each installation groove. A connecting rod is provided above each expansion structure. An anti-slip block is connected to the upper part of each connecting rod. Each connecting rod is connected to a reset structure, and the reset structure is used to drive the connecting rod to reset after the expansion structure loses water.

[0012] Further, each expansion structure includes a plurality of layers of swelling soil layers laid in the installation groove. Medium sand layers are provided between adjacent two layers of swelling soil layers, below the lowermost swelling soil layer, and above the uppermost swelling soil layer. An anti-seepage layer is provided above the uppermost medium sand layer. Water permeable holes are provided around the medium sand layer and the swelling soil layer. A water permeable layer is provided around each installation groove corresponding to the expansion structure.

[0013] Further, each reset structure includes a movable plate fixedly connected to the connecting rod. A fixed plate is provided above each movable plate, and each fixed plate is fixed in the corresponding installation groove. Rubber columns are provided between each movable plate and the corresponding fixed plate. Through holes for the connecting rod to pass through are provided on each fixed plate.

[0014] Further, a first movable block is connected to the lower end of each connecting rod, and a second movable block is connected to the upper end of each connecting rod. The anti-slip block is arranged on the second movable block. Rubber structures are wrapped around the outer sides of the first movable block and the second movable block, and the rubber structures are slidably connected to the installation groove.

[0015] Further, at least two of the anti-slip blocks are provided on each of the second movable blocks. The structure further includes a top plate disposed on the installation groove. The top plate is provided with anti-slip block matching holes that cooperate with the anti-slip blocks, and the top plate is flush with the permeable pavement. A first curb structure is disposed on the left side along the extending direction of the permeable pavement, and a second curb structure is disposed on the right side along the extending direction of the permeable pavement. The lower ends of the first curb structure and the second curb structure both extend to contact the roadbed.

[0016] As can be seen from the above technical solutions, a water storage and anti-slip pedestrian road surface provided by the present invention has the following

[0017] Beneficial effects:

[0018] The anti-slip device of the present invention has the function of rain protrusion losing water and resetting, so as to achieve the purpose of anti-slip on rainy days;

[0019] The water storage layer of the present invention can realize the storage of rainwater, reduce the impact of rainwater on the roadbed, and the stored rainwater can be used for the urban greening system, promoting the utilization of rainwater resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front sectional view of a water storage and anti-slip pedestrian road according to an embodiment of the present invention;

[0021] Figure 2 It is a side sectional view of a water storage and anti-slip pedestrian road surface according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic structural view of the anti-slip device;

[0023] Figure 4 It is a schematic structural view of the reset structure;

[0024] Figure 5 It is a schematic view of the top plate part;

[0025] In the figure, the reference numerals are: permeable pavement 1, second sand layer 2, second water storage layer 3, anti-slip device 4, first sand layer 5, first water storage layer 6, slurry seal layer 7, water isolation layer 8, waterproof layer 9, roadbed 10, sieve plate 11, permeable structure 12, water storage tank 13, water outlet hole 14, first curb structure 15, second curb structure 16;

[0026] medium sand layer 42, swelling soil layer 43, permeable layer 44, anti-seepage layer 45, first movable block 46, rubber structure 47, reset structure 48, movable plate 481, rubber column 482, fixed plate 483, second movable block 49, connecting rod 410, anti-slip block 411, top plate 412. DETAILED DESCRIPTION OF THE INVENTION

[0027] To better understand the purpose, structure and function of the present invention, the following further describes in detail a water storage and anti-slip pedestrian road surface of the present invention with reference to the accompanying drawings.

[0028] As Figure 1-2 shown, it shows a water storage and anti-slip pedestrian road surface according to an embodiment of the present invention, including a waterproof and water isolation layer, a water storage layer and a permeable road surface 1. Among them, the waterproof and water isolation layer is laid above the roadbed 10, and the waterproof and water isolation layer is used to prevent rainwater from seeping into the roadbed 10. The seepage of rainwater into the roadbed 10 may cause uneven settlement of the roadbed 10, which will affect the water storage and anti-slip device 4 on the one hand, and may also cause the problem of uneven road surface on the other hand; a water storage layer is arranged above the waterproof and water isolation layer, and a permeable road surface 1 is laid above the water storage layer. The permeable road surface 1 can allow rainwater to pass through. For example, permeable bricks are used, and the rainwater passing through the permeable road surface 1 is accumulated through the water storage layer. The accumulated rainwater can be used for the urban greening system; a number of anti-slip devices 4 are arranged in sequence along the extension direction of the permeable road surface 1, and each anti-slip device 4 extends into the water storage layer. When the rainwater accumulated in the water storage layer enters the anti-slip device 4, the top of the anti-slip device 4 can protrude above the permeable road surface 1, so as to achieve the purpose of anti-slip on rainy days. In addition, when the anti-slip device 4 loses water, it can be reset, for example, reset to the top of the anti-slip device 4 being flush with the permeable road surface 1, so as to facilitate walking.

[0029] In a specific embodiment, the water storage layer includes a first water storage layer 6 laid on the waterproof and water isolation layer. A water storage tank 13 is arranged on one side of the first water storage layer 6. A sand interception structure is arranged on the side wall of the water storage tank 13, and a water outlet hole 14 is arranged at the bottom of the water storage tank 13. In this embodiment, the first water storage layer 6 is used to accumulate rainwater, and in addition, part of the rainwater enters the water storage tank 13 for storage. The setting of the sand interception structure is used to intercept the sand contained in the rainwater entering the water storage tank 13, so as to avoid the sand of the first water storage layer 6 from entering the water storage tank 13. The water outlet hole 14 at the bottom of the water storage tank 13 extends to be connected with the greening pool, so that the rainwater in the water storage tank 13 can flow into the greening pool conveniently; specifically, on rainy days, the rainwater is accumulated in the first water storage layer 6 and the water storage tank 13. When the weather is clear, the water in the water storage tank 13 flows into the greening pool to supplement the greening water. After the water volume in the water storage tank 13 decreases, the rainwater in the first water storage layer 6 enters the water storage tank 13 through the sand interception structure; in specific implementation, the first water storage layer 6 can be set as a pebble layer.

[0030] In a specific embodiment, the sand interception structure includes a permeable structure 12 disposed on one side of the first water storage layer 6. A sieve plate 11 is provided on the side of the permeable structure 12 away from the first water storage layer 6, and a plurality of sieve holes are provided on the sieve plate 11. Specifically, the permeable structure 12 can allow rainwater to pass through, but can intercept sand and soil, thereby preventing sand and soil from accumulating in the storage pool 13. The sieve plate 11 with sieve holes also serves the purpose of allowing rainwater to pass through. In specific implementation, the permeable structure 12 can be set as a permeable geotextile, and the sieve plate 11 can also support the permeable geotextile.

[0031] In a specific embodiment, the waterproof and water isolation layer includes a waterproof layer 9, a water isolation layer 8, and a slurry seal layer 7 sequentially laid on the roadbed 10 from bottom to top. The upper surface of the slurry seal layer 7 is provided with a slope that slopes from the side away from the storage pool 13 towards the storage pool 13 and slopes downward in the direction from the side away from the storage pool 13 towards the storage pool 13. In this embodiment, the waterproof and water isolation layer is provided to block rainwater entering the roadbed 10. Specifically, the waterproof and water isolation layer includes a waterproof layer 9, a water isolation layer 8, and a slurry seal layer 7. Among them, the waterproof layer 9 is a rubber waterproof layer, the water isolation layer 8 is a corrugated water isolation layer, and the slurry seal layer 7 is a modified emulsified asphalt slurry seal layer. In addition, the slope on the upper surface of the slurry seal layer 7 is provided to allow rainwater to flow along the slope into the storage pool 13. Specifically, when setting, the slope of the slope can be 1%.

[0032] In a specific embodiment, a second water storage layer 3 is provided above the first water storage layer 6. A first sand layer 5 is provided between the second water storage layer 3 and the first water storage layer 6, and the first sand layer 5 extends above the storage pool 13. A second sand layer 2 is provided between the second water storage layer 3 and the permeable road surface 1, and the anti-slip device 4 extends into the second water storage layer 3. In this embodiment, the second water storage layer 3 has the function of storing water, and the accumulated rainwater seeps into the anti-slip device 4. The second water storage layer 3 can be designed as a pebble layer in specific design.

[0033] In a specific embodiment, such as Figure 3As shown, each of the anti-slip devices 4 includes a mounting groove extending from the permeable pavement 1 into the second water storage layer 3. An expansion structure that swells upon contact with water is provided at the bottom of each mounting groove. A connecting rod 410 is provided above each expansion structure. An anti-slip block 411 is connected to the upper part of each connecting rod 410. Each connecting rod 410 is connected to a reset structure 48, and the reset structure 48 is used to drive the connecting rod 410 to reset after the expansion structure loses water. In this embodiment, the expansion structure has the characteristic of swelling upon contact with water. Since the four sides of the mounting groove are all the second water storage layer 3, the expansion structure can only expand upward along the height direction of the mounting groove. The upward expansion of the expansion structure drives the connecting rod 410 to move upward, and the upward movement of the connecting rod 410 drives the anti-slip block 411 to move upward so that the anti-slip block 411 protrudes above the permeable pavement 1, thereby achieving the purpose of anti-slip through the anti-slip block 411. In addition, the connecting rod 410 is connected to a reset structure 48. Specifically, two or more reset structures 48 can be provided in each mounting groove. The reset structure 48 can drive the connecting rod 410 to reset after the expansion structure loses water, and the connecting rod 410 resets and the anti-slip block 411 resets. Specifically, when the rainwater stored in the second water storage layer 3 decreases, the rainwater in the expansion structure will flow into the second water storage layer 3, and at the same time, the reset structure 48 gradually resets and squeezes out the rainwater in the expansion structure. When the reset structure 48 resets, the anti-slip block 411 is flush with the permeable pavement 1, thus facilitating the passage of pedestrians.

[0034] In a specific embodiment, as Figure 3 shown, each of the expansion structures includes several layers of swelling soil layers 43 laid in the mounting groove. Medium sand layers 42 are provided between adjacent two layers of swelling soil layers 43, below the lowermost swelling soil layer 43, and above the uppermost swelling soil layer 43. An anti-seepage layer 45 is provided above the uppermost medium sand layer 42. Permeable holes are provided around the medium sand layer 42 and the swelling soil layer 43. A permeable layer 44 is provided around each mounting groove corresponding to the expansion structure. The swelling soil of the swelling soil layer 43 in this embodiment can absorb water and swell. The anti-seepage layer 45 is an anti-seepage geotextile, and the permeable layer 44 is a permeable geotextile. The permeable holes are provided to allow the swelling soil to lose water. Additionally, during implementation, for example, the swelling soil layer 43 is set to 4 layers and the medium sand layer 42 is set to 5 layers.

[0035] In a specific embodiment, as Figure 3-4As shown, each of the reset structures 48 includes a movable plate 481 fixedly connected to the connecting rod 410. Above each movable plate 481, there is a fixed plate 483, and each fixed plate 483 is fixed in the corresponding installation groove. Between each movable plate 481 and the corresponding fixed plate 483, there is a rubber column 482. Each fixed plate 483 is provided with a through hole for the connecting rod 410 to pass through. Specifically, the connecting rod 410 passes through the through hole on the fixed plate and extends upward to be able to push the anti-slip block 411 upward. When the expansive soil in the expansive soil layer 43 expands, the expansive soil pushes the connecting rod 410 upward. The upward movement of the connecting rod 410 causes the movable plate 481 connected to the connecting rod 410 to move upward. The upward movement of the movable plate 481 shortens the distance between the movable plate 481 and the fixed plate 483, and the rubber column 482 is compressed. When the rainwater stored in the second water storage layer 3 decreases, the rainwater in the expansive soil layer 43 will flow into the second water storage layer 3. At the same time, the rubber column 482 gradually resets to squeeze out the rainwater in the expansive soil layer 43. Finally, the rainwater in the expansive soil layer 43 is completely squeezed out, and the rubber column 482 resets.

[0036] In a specific embodiment, as Figure 3 shown, a first movable block 46 is connected to the lower end of each connecting rod 410, and a second movable block 49 is connected to the upper end of each connecting rod 410. The anti-slip block 411 is arranged on the second movable block 49. The outer sides of the first movable block 46 and the second movable block 49 are wrapped with a rubber structure 47, and the rubber structure 47 is slidably connected to the installation groove. In this embodiment, the rubber structure 47 wrapped around the outer sides of the first movable block 46 and the second movable block 49 is slidably connected to the installation groove. Therefore, the side wall of the installation groove can limit the first movable block 46 and the second movable block 49, so as to avoid the inclination of the connecting rod 410, so that the first movable block 46, the connecting rod 410, and the second movable block 49 can only move along the height direction of the installation groove. In addition, multiple connecting rods 410 between the first movable block 46 and the second movable block 49 in each installation groove can be provided, for example, set to 3.

[0037] In a specific embodiment, as Figure 3 、 Figure 5As shown, at least two anti-slip blocks 411 are provided on each of the second movable blocks 49. It further includes a top plate 412 provided on the installation groove. The top plate 412 is provided with anti-slip block mating holes that cooperate with the anti-slip blocks 411, and the top plate 412 is flush with the permeable pavement 1; a first curb structure 15 is provided on the left side along the extending direction of the permeable pavement 1, and a second curb structure 16 is provided on the right side along the extending direction of the permeable pavement 1. The lower ends of the first curb structure 15 and the second curb structure 16 both extend to contact the roadbed 10. In this embodiment, the number of anti-slip blocks 411 of each anti-slip device 4 can be set to two or more according to the size of the installation groove. Additionally, in order to keep the road surface at the installation groove flat, a top plate 412 is provided, and the top plate 412 is flush with the permeable pavement 1; specifically, for example, there are two anti-slip blocks 411, and two anti-slip block mounting holes that cooperate with the anti-slip blocks 411 are provided on the top plate 412.

[0038] To facilitate understanding of the above content of the present invention, the following describes its working principle in detail.

[0039] When it rains, rainwater seeps into the permeable pavement 1 and the second sand layer 2 and enters the second water storage layer 3. The rainwater in the second water storage layer 3 enters the medium sand layer 42 and the expansive soil layer 43 through the permeable holes of the anti-slip device 4. The water permeability of the medium sand layer 42 is better than that of the expansive soil layer 43, and the entered water can quickly seep into the expansive soil layer 43. The expansive soil in the expansive soil layer 43 swells when encountering water, jacks up the first movable block 46 wrapped by the rubber structure 47, and through the connecting rod 410, jacks up the second movable block 49 wrapped by the rubber structure 47, thereby raising the anti-slip blocks 411 to achieve anti-slip performance; the rainwater in the second water storage layer 3 then seeps down to the first sand layer 5 and the first water storage layer 6. The rainwater in the first water storage layer 6 flows along the slope through the permeable structure 12 and the sieve plate 11 into the storage pool 13. The permeable structure 12 has the function of intercepting fine sand. The rainwater in the storage pool 13 finally flows into the bottom of the green tree pool through the water outlet hole 14 and seeps into the ground, thereby realizing the utilization of rainwater resources and ecological environmental protection; the waterproof and water isolation layer can prevent the roadbed 10 from deforming and uneven settlement due to the intrusion of rainwater. This design not only ensures the stability of each layer structure but also improves the service performance of the sidewalk pavement.

[0040] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0041] In addition, terms such as "one", "two", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, "a plurality" means more than two unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A water storage and anti-slip pavement for pedestrians, characterized in that, It includes a waterproof and water - isolating layer arranged on the roadbed. A water storage layer is arranged above the waterproof and water - isolating layer, and a permeable road surface is laid above the water storage layer; A number of anti - slip devices are arranged in sequence along the extending direction of the permeable road surface. Each anti - slip device extends into the water storage layer. After the anti - slip device encounters water, its top can protrude above the permeable road surface to play an anti - slip role, and the anti - slip device can reset after losing water; The water storage layer includes a first water storage layer laid on the waterproof and water - isolating layer. A second water storage layer is arranged above the first water storage layer. Each anti - slip device includes an installation groove extending from the permeable road surface into the second water storage layer. An expansion structure that expands when encountering water is arranged at the bottom of each installation groove. A connecting rod is arranged above each expansion structure. An anti - slip block is connected to the upper part of each connecting rod. Each connecting rod is connected with a reset structure, and the reset structure is used to drive the connecting rod to reset after the expansion structure loses water.

2. The water storage and anti-slip pedestrian road surface according to claim 1, wherein A water storage pool is arranged on one side of the first water storage layer. A sand interception structure is arranged on the side wall of the water storage pool, and a water outlet hole is arranged at the bottom of the water storage pool.

3. The anti-slip pedestrian pavement with water storage according to claim 2, wherein, The sand interception structure includes a permeable structure arranged on one side of the first water storage layer. A sieve plate is arranged on the side of the permeable structure away from the first water storage layer, and a number of sieve holes are arranged on the sieve plate.

4. The water storage and anti-slip pedestrian road surface according to claim 2, wherein, The waterproof and water - isolating layer includes a waterproof layer, a water - isolating layer and a slurry seal layer laid on the roadbed in sequence from bottom to top. And the upper surface of the slurry seal layer is provided with a slope that inclines from the side far away from the water storage pool to the water storage pool and slopes downward in the direction from the side far away from the water storage pool to the water storage pool.

5. The water storage and anti-slip pedestrian road surface according to claim 2, wherein, A first sand layer is arranged between the second water storage layer and the first water storage layer, and the first sand layer extends above the water storage pool; A second sand layer is arranged between the second water storage layer and the permeable road surface, and the anti - slip device extends into the second water storage layer.

6. The water storage and anti-slip pedestrian road surface according to claim 1, characterized in that, Each expansion structure includes a number of layers of swelling soil layers laid in the installation groove. Medium sand layers are arranged between adjacent two layers of swelling soil layers, below the lowermost swelling soil layer and above the uppermost swelling soil layer. An anti - seepage layer is arranged above the uppermost medium sand layer; Permeable holes are arranged around the medium sand layer and the swelling soil layer; A permeable layer is arranged around each installation groove corresponding to the expansion structure.

7. The water storage and anti-slip pedestrian road surface according to claim 1, wherein, Each reset structure includes a movable plate fixedly connected with the connecting rod. A fixed plate is arranged above each movable plate, and each fixed plate is fixed in the corresponding installation groove. Rubber columns are arranged between each movable plate and the corresponding fixed plate. Through holes for the connecting rod to pass through are arranged on each fixed plate.

8. The anti-slip and water-storing pedestrian road surface according to claim 1, characterized in that, A first movable block is connected to the lower end of each connecting rod, and a second movable block is connected to the upper end of each connecting rod. The anti - slip block is arranged on the second movable block. Rubber structures are wrapped around the outer sides of the first movable block and the second movable block, and the rubber structures are slidably connected with the installation groove.

9. The water storage and anti-slip pedestrian road surface according to claim 8, wherein At least two of the anti-slip blocks are provided on each of the second movable blocks. It further includes a top plate arranged on the installation groove. The top plate is provided with anti-slip block matching holes that cooperate with the anti-slip blocks, and the top plate is flush with the permeable road surface. A first curb structure is arranged on the left side along the extending direction of the permeable road surface, and a second curb structure is arranged on the right side along the extending direction of the permeable road surface. The lower ends of the first curb structure and the second curb structure both extend to contact the roadbed.

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