Pavement structure of sponge city

Abstract

The utility model relates to the field of pavement structures, and discloses a pavement structure of a sponge city, which comprises a base layer, a middle drainage layer is arranged on the top surface of the base layer, a pavement permeable layer is arranged on the top surface of the middle drainage layer, and drainage ditches are respectively arranged on the left side and the right side of the middle drainage layer on the top surface of the base layer. Rainwater in the middle drainage shell 5 is drained into the drainage ditch 4 through the L-shaped drainage pipe 7, when the rainwater in the drainage ditch is little, the circular sealing plate is located below the L-shaped drainage pipe, so that the rainwater in the middle drainage shell is conveniently and smoothly drained through the L-shaped drainage pipe, and on the contrary, when heavy rain or rainstorm occurs, the rainwater in the drainage ditch rises rapidly, and the rainwater in the drainage ditch is drained. At the moment, the circular sealing plate moves upwards under the action of the floating plate so as to be in contact with the bottom of the fixing ring, sealing of the drainage end at the bottom of the L-shaped drainage pipe is achieved, rainwater in the drainage ditch can be effectively prevented from entering the middle drainage shell, and the influence of the rainwater on the sponge city pavement structure is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of pavement structures, and specifically relates to a pavement structure for a sponge city. Background Art

[0002] Sponge City is an urban planning concept that aims to improve urban water circulation, increase water resource utilization efficiency, and reduce urban waterlogging and water pollution through a combination of natural and artificial means. Its core concept is to mimic the functions of natural ecosystems and use permeable materials to enhance the city's water storage, infiltration, and purification capabilities, thereby achieving the functions of "water absorption, storage, and drainage."

[0003] Sponge cities advocate sustainable development and ecological governance, taking into account the city's drainage needs and ecological environmental protection, improving the urban climate and the quality of life of residents, while providing more flexible solutions for responding to climate change.

[0004] For example, the utility model patent with announcement number CN219195535U discloses a pavement structure for a sponge city, which belongs to the field of pavement structure technology. It includes a porous asphalt concrete layer, an anti-seismic layer is arranged at the bottom of the porous asphalt concrete layer, the anti-seismic layer includes a bottom plate, a plurality of groups of strong springs are fixedly arranged on the bottom plate, the top ends of the plurality of groups of strong springs are fixedly connected to the porous asphalt concrete layer, a plurality of dampers for contacting the porous asphalt concrete layer are fixedly arranged on the bottom plate, a gravel layer is arranged at the bottom of the anti-seismic layer, a drainage layer is arranged at the bottom of the gravel layer, a base layer is arranged at the bottom of the drainage layer, and water storage tanks connected to the drainage layer are arranged on both sides of the base layer. The vibration received by the porous asphalt concrete layer is transmitted to the anti-seismic layer, and the vibration is cushioned by squeezing the plurality of strong springs. When the plurality of strong springs are compressed to a certain extent, the porous asphalt concrete layer contacts the plurality of dampers, and the vibration is absorbed by the plurality of dampers, thereby improving the anti-seismic performance of the pavement structure.

[0005] However, during actual use, it was discovered that the device drains the water inside the drainage layer into the water storage tank through the drainage pipe to improve the drainage effect of the sponge city pavement;

[0006] However, since the water tank of this device is used to store rainwater and collect water on the road surface, when there is heavy rain or rainstorm, a large amount of rainwater will quickly gather in the water tank. If the rainwater level rises rapidly, it will flow back into the drainage layer through the drainage pipe, causing water to penetrate into the gravel layer and the base layer, which will pose a potential threat to the stability of the road surface and shorten the service life of the road surface. For this purpose, a sponge city pavement structure is provided. Utility Model Content

[0007] The purpose of this application is to provide a pavement structure for a sponge city in order to solve the above-mentioned problems.

[0008] The technical solution adopted in this application is as follows: A sponge city pavement structure includes a base layer, a central drainage layer is provided on the top surface of the base layer, a pavement permeable layer is provided on the top surface of the central drainage layer, and drainage ditches are provided on the left and right sides of the central drainage layer on the top surface of the base layer;

[0009] The central drainage layer includes a central drainage shell, a water-permeable hole, an L-shaped drainage pipe, a fixing ring, a limiting rod, a circular sealing plate and a top plate. The top surface of the base layer is provided with a central drainage shell, and a plurality of water-permeable holes are opened on the top surface of the central drainage shell. L-shaped drainage pipes are fixedly installed on the left and right sides of the central drainage shell respectively. The L-shaped drainage pipe extends to the interior of the drainage ditch at one end away from the central drainage shell. A fixing ring is fixedly installed on the inner wall surface of the L-shaped drainage pipe. Four limiting rods are movably penetrated on the top surface of the fixing ring, and circular sealing plates are fixedly installed on the bottom ends of the four limiting rods. The top end of the limiting rod is fixedly installed with a top plate.

[0010] In a preferred embodiment, a bonding layer 1 is fixedly installed on the top surface of the central drainage shell, a buffer layer is fixedly installed on the top surface of the bonding layer 1, and the top surface of the buffer layer is fixed to the bottom surface of the pavement permeable layer.

[0011] In a preferred embodiment, a second bonding layer is fixedly installed on the bottom surface of the middle drainage shell, a waterproof layer is fixedly installed on the bottom surface of the second bonding layer, and a sand and gravel layer is provided on the bottom surface of the waterproof layer.

[0012] In a preferred embodiment, a cover plate is provided on the top surface of the drainage ditch, and a plurality of drainage holes are opened on the top surface of the cover plate.

[0013] In a preferred embodiment, a floating plate is fixedly mounted on the bottom surface of the circular sealing plate.

[0014] In a preferred embodiment, a plurality of reinforcement protrusions are installed in an evenly spaced array inside the central drainage housing.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0016] 1. In the present application, due to the adoption of the above-mentioned scheme, when there is less rainwater in the drainage ditch, the circular sealing plate is located below the L-shaped drain pipe, which facilitates the smooth discharge of rainwater inside the middle drainage shell through the L-shaped drain pipe. On the contrary, when encountering heavy rain or rainstorms, the rainwater inside the drainage ditch rises rapidly. At this time, the circular sealing plate will move upward under the action of the floating plate, thereby contacting the bottom of the fixed ring to achieve sealing of the drainage end at the bottom of the L-shaped drain pipe, which can effectively prevent rainwater inside the drainage ditch from entering the middle drainage shell, reducing the impact of rainwater on the sponge city pavement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 For this application Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 This is a schematic diagram of the structure in which the central drainage shell of this application is not installed;

[0020] Figure 4 This is a partial structural explosion diagram of this application.

[0021] Markings in the figure: 1. Foundation layer; 2. Middle drainage layer; 3. Pavement permeable layer; 4. Drainage ditch; 5. Middle drainage shell; 6. Permeable hole; 7. L-shaped drainage pipe; 8. Fixing ring; 9. Limiting rod; 10. Circular sealing plate; 11. Top plate; 12. Adhesive layer 1; 13. Buffer layer; 14. Adhesive layer 2; 15. Waterproof layer; 16. Sand and gravel layer; 17. Cover plate; 18. Drainage hole; 19. Floating plate; 20. Reinforcement bump. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] refer to Figure 1 、 Figure 2 and Figure 3 A pavement structure of a sponge city includes a base layer 1, a central drainage layer 2 is provided on the top surface of the base layer 1, a pavement permeable layer 3 is provided on the top surface of the central drainage layer 2, and drainage ditches 4 are provided on the left and right sides of the top surface of the base layer 1. Through the provided central drainage layer 2, rainwater that seeps down from the pavement permeable layer 3 is easily discharged into the inside of the drainage ditch 4. The drainage ditch 4 can be connected to a reservoir or a river, which is convenient for the discharge of rainwater. The pavement permeable layer 3 can be made of permeable concrete or permeable asphalt, which is convenient for the discharge of rainwater from the pavement.

[0024] refer to Figure 1The top surface of the drainage ditch 4 is provided with a cover plate 17, and the top surface of the cover plate 17 is provided with a plurality of drainage holes 18; the set cover plate 17 can prevent larger debris from entering the interior of the drainage ditch 4, and the set multiple drainage holes 18 facilitate rainwater to enter the interior of the drainage ditch 4 and then be discharged into the river or the interior of the reservoir.

[0025] refer to Figure 2 、 Figure 3 and Figure 4 The central drainage layer 2 includes a central drainage shell 5, a water permeable hole 6, an L-shaped drainage pipe 7, a fixing ring 8, a limiting rod 9, a circular sealing plate 10 and a top plate 11. The top surface of the base layer 1 is provided with a central drainage shell 5. A plurality of reinforcement protrusions 20 are installed in an evenly spaced array inside the central drainage shell 5. The top surface of the central drainage shell 5 is provided with a plurality of water permeable holes 6; the central drainage shell 5 can be made of high-density polyethylene (HDPE) or glass fiber reinforced plastic (FRP) material. Both high-density polyethylene (HDPE) and glass fiber reinforced plastic (FRP) materials have corrosion resistance and mechanical strength, can withstand large loads, and are not easily corroded by water and chemicals. Through the provision of multiple water permeable holes 6, rainwater that penetrates through the road surface water permeable layer 3 can enter the interior of the central drainage shell 5, thereby facilitating the subsequent discharge of rainwater.

[0026] refer to Figure 1 、 Figure 3 and Figure 4 An L-shaped drain pipe 7 is fixedly installed on the left and right sides of the central drainage shell 5, and one end of the L-shaped drain pipe 7 away from the central drainage shell 5 extends to the inside of the drainage ditch 4; through the arrangement of the L-shaped drain pipe 7, rainwater inside the central drainage shell 5 is easily discharged into the inside of the drainage ditch 4, and the L-shaped drain pipe 7 and the central drainage shell 5 can be made of the same material.

[0027] refer to Figure 1 、 Figure 3 and Figure 4The inner wall surface of the L-shaped drain pipe 7 is fixedly installed with a fixing ring 8, and the top surface of the fixing ring 8 is movably penetrated with four limiting rods 9, and the bottom ends of the four limiting rods 9 are fixedly installed with a circular sealing plate 10, and the bottom surface of the circular sealing plate 10 is fixedly installed with a floating plate 19, and the top end of the limiting rod 9 is fixedly installed with a top plate 11; when there is less rain in the gutter 4, the circular sealing plate 10 is located below the L-shaped drain pipe 7, so that the rainwater inside the middle drainage shell 5 is discharged through the L-shaped drain pipe 7. When heavy rain or rainstorm weather occurs, the rainwater inside the gutter 4 rises rapidly. At this time, the circular sealing plate 10 moves upward under the drive of the floating plate 19, so that the circular sealing plate 10 contacts the bottom of the fixing ring 8, thereby sealing the drainage end at the bottom of the L-shaped drain pipe 7, so that the rainwater inside the gutter 4 will not enter the interior of the middle drainage shell 5, thereby reducing the impact of rainwater on the sponge city pavement structure.

[0028] refer to Figure 1 、 Figure 2 The top surface of the central drainage shell 5 is fixedly installed with a bonding layer 12, and the top surface of the bonding layer 12 is fixedly installed with a buffer layer 13. The top surface of the buffer layer 13 is fixed to the bottom surface of the pavement permeable layer 3; through the setting of the bonding layer 12, the buffer layer 13 can be conveniently bonded and fixed, thereby simplifying the installation process of the buffer layer 13. The setting of the buffer layer 13 can not only effectively relieve the bearing pressure of the pavement and improve the service life of the pavement, but also improve driving comfort. The bonding layer 12 usually adopts high-performance materials such as polyurethane or epoxy resin. These materials have good adhesion and durability, and the buffer layer 13 can be made of special rubber materials. These materials provide excellent buffering effect and compressive strength to ensure the long-term stability and safety of the pavement.

[0029] refer to Figure 1 、 Figure 2 The bottom surface of the middle drainage shell 5 is fixedly installed with a bonding layer 14, the bottom surface of the bonding layer 14 is fixedly installed with a waterproof layer 15, and the bottom surface of the waterproof layer 15 is provided with a gravel layer 16; through the provision of the waterproof layer 15, rainwater can effectively penetrate upward or downward, thereby improving the service life of the pavement structure. The gravel layer 16 is composed of fine sand and coarse sand and is pressed, which can improve the overall strength of the pavement.

[0030] The implementation principle of the pavement structure embodiment of the present application is as follows: rainwater on the pavement permeable layer 3 penetrates into the interior of the central drainage shell 5 through the permeable holes 6. Since the bottom of the central drainage shell 5 is designed as an arc structure, the rainwater inside can flow to both sides and smoothly discharge into the drainage ditch 4 through the L-shaped drainage pipe 7. When there is less rainwater in the drainage ditch 4, the circular sealing plate 10 is located below the L-shaped drainage pipe 7, which facilitates the smooth discharge of rainwater inside the central drainage shell 5 through the L-shaped drainage pipe 7. On the contrary, when heavy rain or rainstorms occur, the rainwater inside the drainage ditch 4 rises rapidly. At this time, the circular sealing plate 10 will move upward under the action of the floating plate 19, thereby contacting the bottom of the fixing ring 8 to achieve sealing of the bottom drainage end of the L-shaped drainage pipe 7. This design effectively prevents rainwater inside the drainage ditch 4 from entering the central drainage shell 5, reducing the impact of rainwater on the sponge city pavement structure.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sponge city pavement structure, comprising a base layer (1), characterized in that: The top surface of the base layer (1) is provided with a middle drainage layer (2), the top surface of the middle drainage layer (2) is provided with a road surface permeable layer (3), and the top surface of the base layer (1) is provided with drainage ditches (4) on the left and right sides of the middle drainage layer (2); The middle drainage layer (2) comprises a middle drainage shell (5), a water-permeable hole (6), an L-shaped drainage pipe (7), a fixing ring (8), a limiting rod (9), a circular sealing plate (10) and a top plate (11); the top surface of the base layer (1) is provided with a middle drainage shell (5); the top surface of the middle drainage shell (5) is provided with a plurality of water-permeable holes (6); the left and right sides of the middle drainage shell (5) are respectively fixedly installed with L-shaped drainage pipes (7); one end of the L-shaped drainage pipe (7) away from the middle drainage shell (5) extends to the inside of the drainage ditch (4); the inner wall surface of the L-shaped drainage pipe (7) is fixedly installed with a fixing ring (8); four limiting rods (9) are movably penetrated on the top surface of the fixing ring (8); and the bottom ends of the four limiting rods (9) are fixedly installed with circular sealing plates (10); and the top ends of the limiting rods (9) are fixedly installed with the top plate (11).

2. The sponge city pavement structure according to claim 1, characterized in that: A bonding layer (12) is fixedly installed on the top surface of the middle drainage shell (5), a buffer layer (13) is fixedly installed on the top surface of the bonding layer (12), and the top surface of the buffer layer (13) is fixed to the bottom surface of the road surface permeable layer (3).

3. The pavement structure of a sponge city according to claim 1, characterized in that: A second cementing layer (14) is fixedly installed on the bottom surface of the middle drainage shell (5), a waterproof layer (15) is fixedly installed on the bottom surface of the second cementing layer (14), and a sand and gravel layer (16) is provided on the bottom surface of the waterproof layer (15).

4. The sponge city pavement structure according to claim 1, characterized in that: The top surface of the drainage ditch (4) is provided with a cover plate (17), and the top surface of the cover plate (17) is provided with a plurality of drainage holes (18).

5. The sponge city pavement structure according to claim 1, characterized in that: A floating plate (19) is fixedly mounted on the bottom surface of the circular sealing plate (10).

6. The sponge city pavement structure according to claim 1, characterized in that: A plurality of reinforcement protrusions (20) are installed in an evenly spaced array inside the middle drainage housing (5).

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