Sponge type permeable asphalt pavement structure with high durability

Abstract

The utility model discloses a sponge type permeable asphalt pavement structure with high durability, and relates to the technical field of asphalt pavements, the sponge type permeable asphalt pavement structure comprises a roadbed, a wear-resistant layer and road shoulder grooves, a cushion layer is paved on the top surface of the roadbed, the left side and the right side of the roadbed are provided with the road shoulder grooves, the drainage end of a water collecting hopper is connected with a vertical drainage pipe, and the vertical drainage pipe is connected with a water outlet of the water collecting hopper. And vertical drainage ditches and transverse drainage ditches are longitudinally and transversely formed in the permeable bottom base layer, the cushion layer and the roadbed respectively. The multi-layer drainage system is designed and comprises the vertical drainage pipes, the transverse drainage pipes, the vertical drainage grooves and the transverse drainage grooves, a three-dimensional and efficient drainage network is formed, and the vertical drainage pipes and the transverse drainage pipes are communicated with the road shoulder grooves. The vertical drainage grooves and the transverse drainage grooves are also communicated with the road shoulder grooves, it is ensured that rainwater can be rapidly drained from the interior of the pavement structure or drained into the road shoulder grooves, and pavement water accumulation is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of asphalt pavement technology, specifically to a high-durability sponge-type permeable asphalt pavement structure. Background Technology

[0002] Asphalt pavement is a road structure made of asphalt mixture, widely used in highways, urban roads, airport runways, etc. Sponge-type asphalt pavement is a new type of pavement structure with water permeability. It imitates the water absorption, storage and drainage functions of a sponge, and can quickly infiltrate rainwater into the pavement structure during rainfall and drain the rainwater out of the pavement area through drainage channels.

[0003] Existing asphalt pavements cannot quickly infiltrate during rainfall, easily accumulating on the road surface and causing urban flooding, traffic congestion, and other problems. Furthermore, this accumulated water can damage pavement materials, reducing the pavement's durability and safety. For example, an asphalt pavement disclosed in patent CN205501757U has a surface layer composed of fine-grained asphalt concrete, medium-grained asphalt concrete, and coarse-grained asphalt concrete layers. A modified emulsified asphalt curing layer and an emulsified asphalt curing layer are sprayed on top of the surface layer. The main function of these curing layers is to protect the surface layer from external environmental erosion; therefore, their presence may also affect the pavement's drainage performance, preventing rainwater from quickly infiltrating and causing it to accumulate on the road surface.

[0004] Therefore, it is necessary to invent a high-durability sponge-type permeable asphalt pavement structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-durability sponge-type permeable asphalt pavement structure to solve the problem of poor permeability, which prevents rainwater from draining in time and reduces pavement durability and safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-durability sponge-type permeable asphalt pavement structure, comprising a roadbed, a wear-resistant layer, and shoulder grooves. A subbase is laid on the top surface of the roadbed, a permeable subbase is laid on the top surface of the subbase, a load-bearing base is laid on the top surface of the permeable subbase, a permeable asphalt surface layer is provided above the load-bearing base, shoulder grooves are provided on the left and right sides of the roadbed, a water collection hopper is provided inside the wear-resistant layer, and a vertical drainage pipe is connected to the drainage end of the water collection hopper. The vertical drainage pipe passes through the anti-skid layer, the permeable asphalt surface layer, and the waterproof adhesive layer and extends into the load-bearing base. A transverse drainage pipe is horizontally embedded inside the load-bearing base. Vertical drainage grooves and transverse drainage grooves are respectively formed longitudinally and transversely inside the permeable subbase, subbase, and roadbed.

[0007] Preferably, a waterproof bonding layer is provided on the top surface of the load-bearing base layer and the bottom surface of the permeable asphalt surface layer. The waterproof bonding layer is an emulsified asphalt waterproof coating with a thickness of 1 mm, which can form a strong bonding layer and tightly connect the two together.

[0008] Preferably, the top surface of the permeable asphalt surface layer is provided with an anti-slip layer, and the top surface of the anti-slip layer is provided with a wear-resistant layer. The anti-slip layer is made of transparent polyurethane anti-slip material, and the wear-resistant layer is made of water-based acrylic coating. The anti-slip layer provides good anti-slip performance for the road surface to ensure driving safety, and the wear-resistant layer enhances the wear resistance of the road surface to resist wear caused by vehicle traffic and the natural environment.

[0009] Preferably, the opening height on one side of the shoulder ditch reaches the top surface of the wear-resistant layer, and the slope of the shoulder ditch gradually decreases in the direction away from the wear-resistant layer, forming a certain slope, which helps rainwater on the wear-resistant layer pavement to drain quickly into the shoulder ditch and prevent water accumulation on the road surface.

[0010] Preferably, the top slope of the shoulder ditch is provided with a drainage outlet, and multiple drainage outlets are provided to further accelerate the discharge of rainwater and improve the drainage efficiency of the road surface.

[0011] Preferably, multiple water collection hoppers are provided, and the multiple water collection hoppers are distributed in a rectangular uniform array. The interior of the multiple water collection hoppers is provided with a filter screen, which can filter out impurities and garbage in the rainwater and prevent them from entering the drainage system and causing blockage.

[0012] Preferably, both ends of the transverse drainage pipe extend into the shoulder ditch, and the transverse drainage pipe is connected to the vertical drainage pipe to form a complete drainage network, ensuring that rainwater can be quickly and smoothly discharged from the road surface structure.

[0013] Preferably, multiple vertical and horizontal drainage ditches are provided. The inlet end of the multiple vertical drainage ditches is located on the bottom surface of the load-bearing base layer, and the drainage end of the vertical drainage ditches is located on the bottom surface of the roadbed. The drainage ends of the multiple horizontal drainage ditches extend into the shoulder ditch. The vertical drainage ditches and horizontal drainage ditches are connected. The vertical drainage ditches, horizontal drainage ditches and shoulder ditch together constitute the drainage channel of the road surface.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model designs a multi-layered drainage system, including vertical drainage pipes, horizontal drainage pipes, vertical drainage ditches, and horizontal drainage ditches, forming a three-dimensional and efficient drainage network. The vertical and horizontal drainage pipes are interconnected with the shoulder ditches, and the vertical and horizontal drainage ditches are also interconnected with the shoulder ditches, ensuring that rainwater can be quickly discharged from the inside of the road structure or discharged into the shoulder ditches, effectively preventing water accumulation on the road surface.

[0016] 2. This utility model also designs a sloping shoulder ditch, which allows rainwater to drain quickly from the wear-resistant pavement into the shoulder ditch, avoiding water accumulation on the pavement. This design effectively prevents rainwater from remaining on the pavement for a long time, thereby reducing the penetration and erosion of pavement materials by water. In addition, multiple drainage outlets on the top slope of the shoulder ditch further accelerate the discharge of rainwater, improve drainage efficiency, and ensure that the pavement can quickly return to a dry state, which is conducive to maintaining the service life and durability of the pavement. Attached Figure Description

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

[0018] Figure 2 This is a top view of the overall structure of this utility model.

[0019] Figure 3 This utility model Figure 1 Enlarged 3D structural diagram at point A in the middle;

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the vertical and horizontal drainage ditches of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Subgrade; 2. Subbase; 3. Permeable subbase; 4. Load-bearing base; 5. Waterproof bonding layer; 6. Permeable asphalt surface layer; 7. Anti-skid layer; 8. Wear-resistant layer; 9. Shoulder ditch; 10. Drain outlet; 11. Water collection hopper; 12. Filter screen; 13. Vertical drainage pipe; 14. Horizontal drainage pipe; 15. Vertical drainage ditch; 16. Horizontal drainage ditch. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-4The diagram shows a high-durability sponge-type permeable asphalt pavement structure, comprising a roadbed 1, a wear-resistant layer 8, and shoulder grooves 9. A subbase 2 is laid on the top surface of the roadbed 1, a permeable subbase 3 is laid on the top surface of the subbase 2, a load-bearing base 4 is laid on the top surface of the permeable subbase 3, a permeable asphalt surface layer 6 is provided above the load-bearing base 4, and shoulder grooves 9 are provided on the left and right sides of the roadbed 1. A water collection hopper 11 is provided inside the wear-resistant layer 8, and a vertical drainage pipe 13 is connected to the drainage end of the water collection hopper 11. The vertical drainage pipe 13 passes through the anti-skid layer 7, the permeable asphalt surface layer 6, and the waterproof bonding layer 5 and extends into the interior of the load-bearing base 4. A transverse drainage pipe 14 is buried inside the load-bearing base 4. Vertical drainage grooves 15 and transverse drainage grooves 16 are respectively opened longitudinally and transversely inside the permeable subbase 3, the subbase 2, and the roadbed 1.

[0025] A waterproof bonding layer 5 is provided on the top surface of the load-bearing base layer 4 and the bottom surface of the permeable asphalt surface layer 6. The waterproof bonding layer 5 is an emulsified asphalt waterproof coating with a thickness of 1mm. An anti-slip layer 7 is provided on the top surface of the permeable asphalt surface layer 6, and a wear-resistant layer 8 is provided on the top surface of the anti-slip layer 7. The anti-slip layer 7 is made of polyurethane transparent anti-slip material, and the wear-resistant layer 8 is made of water-based acrylic coating.

[0026] In this embodiment, the waterproof bonding layer 5 effectively improves the strong bond between the load-bearing base layer 4 and the permeable asphalt surface layer 6. The waterproof bonding layer 5 of the emulsified asphalt waterproof coating is 1mm thin, and the emulsified asphalt itself has a certain porosity, which still allows some water vapor to pass through and will not completely block the permeability of the road surface. The anti-slip layer 7 provides a good anti-slip effect, and the wear-resistant layer 8 enhances the wear resistance of the road surface, resists the wear of the road surface caused by vehicle traffic and the natural environment, and further improves the durability of the road surface.

[0027] The opening height on one side of the shoulder ditch 9 reaches the top surface of the wear-resistant layer 8. The slope of the shoulder ditch 9 gradually decreases in the direction away from the wear-resistant layer 8, forming a certain slope. A drain outlet 10 is opened on the top slope of the shoulder ditch 9. Multiple drain outlets 10 are provided. Multiple water collection buckets 11 are provided. The multiple water collection buckets 11 are distributed in a rectangular uniform array. A filter screen 12 is provided inside the multiple water collection buckets 11. The drainage ends of both ends of the transverse drainage pipe 14 penetrate into the interior of the shoulder ditch 9. The transverse drainage pipe 14 is connected to the vertical drainage pipe 13. Multiple vertical drainage ditches 15 and transverse drainage ditches 16 are provided. The water inlet end of the multiple vertical drainage ditches 15 is located at the bottom surface of the load-bearing base layer 4. The drainage end of the vertical drainage ditches 15 is located at the bottom surface of the roadbed 1. The drainage ends of the multiple transverse drainage ditches 16 penetrate into the interior of the shoulder ditch 9. The vertical drainage ditches 15 are connected to the transverse drainage ditches 16.

[0028] In this embodiment, the slope design of the shoulder ditch 9 and the setting of the drain outlet 10 enable rainwater to be quickly drained from the wear-resistant layer 8 into the shoulder ditch 9, avoiding water accumulation on the road surface. The water collection hopper 11 can also collect rainwater simultaneously. The filter screen 12 effectively collects rainwater and filters impurities, preventing blockage of the drainage system. Furthermore, the connection between the horizontal drainage pipe 14 and the vertical drainage pipe 13, as well as the setting of the vertical drainage ditch 15 and the horizontal drainage ditch 16, form a three-dimensional drainage network, ensuring that rainwater can be quickly and smoothly discharged from the road surface structure, thus improving the permeability and drainage performance of the road surface.

[0029] Working principle of this utility model:

[0030] Refer to the instruction manual appendix Figure 1-2 When using this utility model, when rainwater falls on the road surface, some of the rainwater can be quickly discharged from the wear-resistant layer 8 into the shoulder ditch 9 and discharged through its bottom. The drainage outlet 10 on the slope of the shoulder ditch 9 can further accelerate the discharge of rainwater and improve the drainage efficiency of the road surface. In this process, another part of the rainwater will be collected by the water collection bucket 11 set inside the wear-resistant layer 8. The filter screen 12 set inside the water collection bucket 11 will filter out impurities and garbage in the rainwater. The rainwater collected inside the water collection bucket 11 will be sent to the horizontal drainage pipe 14 through the vertical drainage pipe 13 and discharged. In this way, the rainwater can be quickly discharged into the shoulder ditch 9 through the horizontal drainage pipe 14.

[0031] Refer to the instruction manual appendix Figure 3-4 When using this utility model, a small portion of the rainwater that has infiltrated above the load-bearing base layer 4 will continue to infiltrate downwards through the pores inside the load-bearing base layer 4, eventually entering the vertical drainage ditch 15. The rainwater inside the vertical drainage ditch 15 continues to flow to the horizontal drainage ditch 16, and then flows through the drainage end of the horizontal drainage ditch 16 to the inside of the shoulder ditch 9. It then continues to flow along the shoulder ditch 9 and is eventually discharged from the road surface structure, or discharged from the road surface structure through the vertical drainage ditch 15 and enters the soil or drainage system below the roadbed 1. This forms a three-dimensional and efficient drainage network, ensuring that rainwater can be discharged from the road surface structure quickly and smoothly, improving the permeability, drainage performance, and durability of the road surface.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-durability sponge-type permeable asphalt pavement structure, comprising a roadbed (1), a wear-resistant layer (8), and shoulder grooves (9), characterized in that: The top surface of the roadbed (1) is covered with a cushion layer (2), the top surface of the cushion layer (2) is covered with a permeable subbase layer (3), the top surface of the permeable subbase layer (3) is covered with a load-bearing base layer (4), a permeable asphalt surface layer (6) is provided above the load-bearing base layer (4), shoulder grooves (9) are provided on the left and right sides of the roadbed (1), a water collection hopper (11) is provided inside the wear-resistant layer (8), the drainage end of the water collection hopper (11) is connected to a vertical drainage pipe (13), the vertical drainage pipe (13) passes through the anti-skid layer (7), the permeable asphalt surface layer (6), the waterproof bonding layer (5) and extends into the load-bearing base layer (4), a transverse drainage pipe (14) is buried inside the load-bearing base layer (4), and vertical drainage grooves (15) and transverse drainage grooves (16) are respectively opened longitudinally and transversely inside the permeable subbase layer (3), cushion layer (2) and roadbed (1).

2. The high-durability sponge-type permeable asphalt pavement structure according to claim 1, characterized in that: A waterproof bonding layer (5) is provided on the top surface of the load-bearing base layer (4) and the bottom surface of the permeable asphalt surface layer (6). The waterproof bonding layer (5) is an emulsified asphalt waterproof coating and the thickness of the waterproof bonding layer (5) is 1 mm.

3. The high-durability sponge-type permeable asphalt pavement structure according to claim 2, characterized in that: The top surface of the permeable asphalt surface layer (6) is provided with an anti-slip layer (7), and the top surface of the anti-slip layer (7) is provided with a wear-resistant layer (8). The anti-slip layer (7) is made of polyurethane transparent anti-slip material, and the wear-resistant layer (8) is made of water-based acrylic coating.

4. The high-durability sponge-type permeable asphalt pavement structure according to claim 1, characterized in that: The opening height on one side of the shoulder ditch (9) reaches the top surface of the wear-resistant layer (8), and the slope of the shoulder ditch (9) gradually decreases in the direction away from the wear-resistant layer (8), forming a certain slope.

5. The high-durability sponge-type permeable asphalt pavement structure according to claim 4, characterized in that: The top slope of the shoulder ditch (9) is provided with a drain outlet (10), and there are multiple drain outlets (10).

6. The high-durability sponge-type permeable asphalt pavement structure according to claim 1, characterized in that: Multiple water collection hoppers (11) are provided, and the multiple water collection hoppers (11) are distributed in a rectangular uniform array. A filter screen (12) is provided inside the multiple water collection hoppers (11).

7. The high-durability sponge-type permeable asphalt pavement structure according to claim 1, characterized in that: Both ends of the horizontal drainage pipe (14) extend into the shoulder ditch (9), and the horizontal drainage pipe (14) is connected to the vertical drainage pipe (13).

8. The high-durability sponge-type permeable asphalt pavement structure according to claim 1, characterized in that: Multiple vertical drainage ditches (15) and horizontal drainage ditches (16) are provided. The water inlet end of the multiple vertical drainage ditches (15) is located on the bottom surface of the load-bearing base (4), and the drainage end of the vertical drainage ditches (15) is located on the bottom surface of the roadbed (1). The drainage ends of the multiple horizontal drainage ditches (16) extend into the interior of the shoulder ditch (9). The vertical drainage ditches (15) and the horizontal drainage ditches (16) are connected.

Images