A rutting-resistant asphalt pavement structure
By employing a rutting-resistant structure made of high-performance asphalt concrete and epoxy asphalt binder in asphalt pavement, combined with a liftable drainage ditch cover design, the problems of poor rutting resistance and drainage ditch blockage under heavy traffic are solved, achieving efficient cleaning and long-life pavement performance.
Patent Information
- Application Number
- CN202620115642.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-28
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2036-01-28
AI Technical Summary
Existing asphalt pavements have poor rutting resistance under heavy traffic and extreme high temperature conditions, and drainage ditch components are easily clogged, resulting in low cleaning efficiency.
The rutting-resistant asphalt pavement structure uses a combination of high-performance asphalt concrete and epoxy asphalt binder, combined with a design of liftable drainage ditch covers, and uses a top rod to clear blockages.
It significantly improves the rutting resistance of asphalt pavements and the cleaning efficiency of drainage ditch components, extends the service life of pavements, and ensures smooth drainage.
Smart Images
Figure CN224942965U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of asphalt pavement technology, specifically relating to an anti-rutting asphalt pavement structure. Background Technology
[0002] With the continuous improvement of my country's high-grade highway network and the sustained growth of freight volume, special road conditions such as heavy-load traffic (e.g., excessive axle load of large freight vehicles and high traffic frequency), extreme high temperature weather, and long downhill slopes place stringent requirements on the rutting resistance of asphalt pavements. Currently, conventional asphalt pavement structures mostly use ordinary modified asphalt concrete (e.g., AC-13 surface layer, AC-20 intermediate layer) combined with emulsified asphalt binder layers. Under the aforementioned stringent conditions, these designs generally suffer from poor rutting resistance and insufficient durability. Simultaneously, drainage ditch components are typically installed on both sides of the asphalt pavement to improve drainage performance. However, existing drainage ditch components have the following shortcomings: after prolonged use, the drainage channels of the drainage ditch covers become clogged with fallen leaves and other foreign objects. Current cleaning methods involve using tools to push the clogged leaves and other foreign objects into the drainage ditch one by one. This not only leads to low cleaning efficiency but also causes excessive leaves to enter the drainage ditch, resulting in leaf accumulation and blockage. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a rutting-resistant asphalt pavement structure to improve the rutting resistance of asphalt pavement and enhance the cleaning effect on fallen leaves clogging the drainage ditch components on both sides of the asphalt pavement.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A rutting-resistant asphalt pavement structure includes, from bottom to top, a subbase, an intermediate layer, a bonding layer, and a top layer. The intermediate layer is made of high-performance asphalt concrete of type EME-16 or EME-20, with a thickness of 40mm-60mm. The bonding layer is made of epoxy asphalt adhesive, with 0.4kg-0.6kg of epoxy asphalt adhesive applied per square meter of the construction surface. The top layer is made of high-performance epoxy asphalt concrete of type ESMA-10 or ESMA-13, with a thickness of 30mm-50mm. The lower support layer has drainage ditch installation areas on both sides. Drainage ditch assemblies are provided in the drainage ditch installation areas. The drainage ditch assemblies include symmetrically arranged drainage ditch side plates. The drainage ditch side plates are fixed in the drainage ditch installation areas. A drainage ditch cover is provided at the upper end of the drainage ditch side plate. The drainage ditch cover is movably connected to the drainage ditch side plate. The drainage ditch cover is provided with several drainage grooves. Several top rods are provided directly below the drainage grooves. The top rods are arranged perpendicular to the drainage grooves, and the lower ends of the top rods are fixed to the drainage ditch side plate.
[0005] Furthermore, the side plate of the drainage ditch is provided with an installation groove, and a number of columns are provided in the installation groove. One end of the column is fixed to the side plate of the drainage ditch, and the other end of the column is slidably connected to the edge of the drainage ditch cover. Each column is fitted with a spring, one end of the spring is fixed to the side plate of the drainage ditch, and the other end of the spring is fixed to the drainage ditch cover.
[0006] Furthermore, the drainage ditch cover has several sliding holes on both sides of its edge, which are slidably fitted onto the column. The drainage ditch cover also has horizontal through grooves on both sides of its edge, through which several sliding holes on one side are passed. A vertical through groove is provided on the outer side of the horizontal through groove facing the center of the drainage ditch cover, penetrating the upper surface of the drainage ditch cover. The horizontal and vertical through grooves are interconnected to form an L-shaped through groove. A baffle is provided within the horizontal through groove, located above the end of the column. A retaining strip is provided within the vertical through groove.
[0007] Furthermore, a pull rope is provided on the contact surface between the baffle and the baffle bar, one end of the pull rope is fixed to the baffle, and the baffle bar is provided with a receiving groove for accommodating the pull rope.
[0008] Furthermore, the lower end of the top rod is provided with a fixing plate, the lower end of the top rod is fixed to the fixing plate, and the two ends of the fixing plate are fixed to the symmetrically arranged drainage ditch side plates.
[0009] Furthermore, the fixing plate is positioned close to the drainage ditch cover.
[0010] Furthermore, the drainage ditch cover is provided with flexible baffles on both sides, one side of which is fixed to the drainage ditch cover and the other side of which is fixed to the edge of the mounting groove.
[0011] The beneficial effects of this utility model are as follows: (1) In this technical solution, the cement-stabilized crushed stone of the underlying layer provides stable rigid support and avoids the transmission of base deformation; the high-performance asphalt concrete of the middle layer directly resists permanent deformation under heavy load with its high complex modulus; the high-performance epoxy asphalt concrete of the upper layer assists in dispersing the load and reducing surface rutting through its dense skeleton structure and high bonding force; the bonding layer ensures that each layer is stressed together and avoids shear rutting caused by interlayer slippage, and the rutting life is extended by more than 1 times compared with conventional modified asphalt pavement. (2) In this technical solution, the drainage ditch cover can be moved downward, so that the bottom rod can enter the drainage ditch, thereby pushing out the fallen leaves and other debris in the drainage ditch, which is convenient for cleaning and can greatly improve the cleaning effect and efficiency.
[0012] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description
[0013] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a plan view of the anti-rutting asphalt pavement structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the drainage ditch component in the anti-rutting asphalt pavement structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the drainage ditch component in the anti-rutting asphalt pavement structure of this utility model without baffles and baffles. Figure 4 This is a schematic cross-sectional view of the drainage ditch component in the anti-rutting asphalt pavement structure of this utility model.
[0014] The following labels are shown in the attached diagram: 1. Substructure; 2. Intermediate layer; 3. Adhesive layer; 4. Top layer; 5. Drainage ditch installation area; 6. Drainage ditch side plate; 7. Mounting groove; 8. Column; 9. Spring; 10. Drainage ditch cover; 11. Sliding hole; 12. Drainage channel; 13. L-shaped through groove; 14. Baffle; 15. Stop bar; 16. Fixing plate; 17. Top rod. Detailed Implementation
[0015] like Figures 1-4 As shown, an anti-rutting asphalt pavement structure includes, from bottom to top, a subbase 1, a middle layer 2, a bonding layer 3, and a top layer 4. The middle layer 2 is made of high-performance asphalt concrete of type EME-16 or EME-20, and the thickness is 40mm-60mm. The bonding layer 3 is made of epoxy asphalt adhesive, and 0.4kg-0.6kg of epoxy asphalt adhesive is applied per square meter of the construction surface. The top layer 4 is made of high-performance epoxy asphalt concrete of type ESMA-10 or ESMA-13, and the thickness is 30mm-50mm. Subbase 1: Cement-stabilized crushed stone base (thickness 200-250mm), using dense-skeletal cement-stabilized crushed stone, cement grade ≥ PO 42.5, and hard and wear-resistant basalt or diabase aggregate, with a gradation type of dense-skeletal (maximum nominal particle size 31.5mm).
[0016] Intermediate Layer 2: Uses EME-16 or EME-20 high-performance asphalt concrete (thickness 40mm-60mm, preferably 60mm, type preferably EME-20, type and thickness can be set according to actual needs, anti-rutting core load-bearing layer); if high cleanliness and high abrasion value (abrasion value ≤28%) basalt aggregate is selected, the gradation strictly follows the French EME system standard (EME-20 gradation, maximum nominal particle size 20mm, cumulative sieve residue ≤10%).
[0017] Bonding layer 3: Epoxy asphalt adhesive (0.4-0.6 kg / m², key interlayer synergistic layer); if a two-component epoxy asphalt adhesive (epoxy resin + curing agent) is used, the two components need to be precisely mixed in the required ratio (usually 2:1 or 3:1) to achieve high adhesion, high temperature resistance and water damage resistance.
[0018] Top layer 4: High-performance epoxy asphalt concrete of type ESMA-10 or ESMA-13 (thickness 30mm-50mm, preferably 40mm, type preferably ESMA-103, type and thickness can be set according to actual needs, wear-resistant, anti-skid and durable layer); if high polishing value (polishing value PSV≥42), high angularity basalt aggregate is selected (high angularity basalt aggregate is one of the core raw materials of mastic crushed stone mixture, of course there are other raw materials, which are existing technologies and will not be elaborated here), the gradation is ESMA-13 gradation (maximum nominal particle size 13mm, coarse aggregate accounts for 65%-75%, forming a dense skeleton structure).
[0019] Anti-rutting synergistic mechanism: The underlying cement-stabilized crushed stone layer 1 provides stable rigid support, preventing the transmission of base layer deformation; the intermediate layer, EME-20 high-performance asphalt concrete, directly resists permanent deformation under heavy loads due to its high complex modulus; the upper layer 4, using ESMA-13 high-performance epoxy asphalt concrete, assists in dispersing the load and reducing surface rutting through its dense skeleton structure and high bonding strength; the bonding layer 3 ensures that each layer shares the load synergistically, preventing shear rutting caused by interlayer slippage. Durability assurance mechanism: The low porosity of the intermediate and upper layers 4 reduces water intrusion and aging rate; the high water loss resistance and aging resistance of the epoxy asphalt binder and ESMA-13 high-performance epoxy asphalt concrete reduce the risk of water damage and fatigue cracking; strict compaction control and material selection for each layer ensure structural integrity and extend service life to over 15 years.
[0020] The lower support layer 1 has drainage ditch installation areas 5 on both sides. Drainage ditch installation areas 5 are equipped with drainage ditch components (one unit, the whole is composed of several units spliced together). The drainage ditch components include symmetrically arranged drainage ditch side plates 6. The drainage ditch side plates 6 are fixed in the drainage ditch installation areas 5. The upper end of the drainage ditch side plate 6 is equipped with a drainage ditch cover 10. The drainage ditch cover 10 can be lifted and connected to the drainage ditch side plate 6. The drainage ditch cover 10 is equipped with several drainage grooves 12. Several top rods 17 are provided directly below the drainage grooves 12. The top rods 17 are set perpendicular to the drainage grooves 12, and the lower ends of the top rods 17 are fixed to the drainage ditch side plate 6.
[0021] The working principle of the above technical solution is as follows: When it is necessary to clean the drainage channel 12 of the drainage ditch cover 10, it is only necessary to manually apply a downward force to the drainage ditch cover 10 to move the drainage ditch cover 10 downward, thereby allowing the bottom push rod 17 to enter the drainage channel 12, which can push out fallen leaves and other debris in the drainage channel 12, making it easier to clean. At the same time, when pushing out, all the impurities in several drainage channels 12 on the drainage ditch cover 10 are pushed out, which can greatly improve the cleaning effect and efficiency.
[0022] In one feasible embodiment, the side plate 6 of the drainage ditch is provided with an installation groove 7, and a plurality of columns 8 are provided in the installation groove 7. One end of the column 8 is fixed to the side plate 6 of the drainage ditch, and the other end of the column 8 is slidably connected to the edge of the drainage ditch cover 10. Each column 8 is fitted with a spring 9, one end of the spring 9 is fixed to the side plate 6 of the drainage ditch, and the other end of the spring 9 is fixed to the drainage ditch cover 10.
[0023] The sliding connection between the column 8 and the drainage ditch cover 10 allows the drainage ditch cover 10 to move up and down. With the help of the spring 9, the drainage ditch cover 10 is kept at the same height as or slightly lower than the road surface under normal conditions. This ensures that the top rod 17 is always located below the drainage ditch cover 10 under normal conditions, without occupying the drainage space inside the drainage trough 12. When the cleaning personnel apply pressure, the drainage ditch cover 10 compresses the spring 9 and moves down, thereby allowing the top rod 17 to enter the drainage trough 12.
[0024] In one feasible embodiment, the drainage ditch cover 10 has several sliding holes 11 on both sides of its edges. The sliding holes 11 are slidably fitted onto the column 8. The drainage ditch cover 10 has horizontal through grooves on both sides of its edges. The horizontal through grooves pass through several sliding holes 11 on one side. A vertical through groove is provided on the outer side of the horizontal through groove facing the middle of the drainage ditch cover 10. The vertical through groove passes through the upper surface of the drainage ditch cover 10. The horizontal through grooves and the vertical through grooves are interconnected to form an L-shaped through groove 13. A baffle 14 is provided in the horizontal through groove. The baffle 14 is located above the end of the column 8. A stop bar 15 is provided in the vertical through groove.
[0025] Under normal conditions, the baffle 15 is located in the transverse channel and contacts the end of the column 8. At this time, when the drain cover 10 is under pressure, such as when a pedestrian or vehicle is in motion, the drain cover 10 will not move down, ensuring its effectiveness. When cleaning is required, simply remove the baffle 15 and then take out the baffle 14. At this time, when the drain cover 10 is under pressure, the column 8 will move in the sliding hole 11, thereby allowing the drain cover 10 to move down. It is easy to understand that the transverse channel is located inside the drain cover 10, and the function of the baffle 15 is to prevent the baffle 14 from moving and to prevent it from coming out of the transverse channel during use. In actual use, a plug can also be installed in the sliding hole 11 to prevent foreign objects from entering.
[0026] In one feasible embodiment, a pull rope is provided on the contact surface between the baffle 14 and the baffle 15, with one end of the pull rope fixed to the baffle 14. The baffle 15 is provided with a receiving groove for accommodating the pull rope. The pull rope allows the baffle 14 to be pulled out by pulling, thereby improving the ease of operation.
[0027] In one feasible embodiment, the lower end of the push rod 17 is provided with a fixing plate 16, and the lower end of the push rod 17 is fixed to the fixing plate 16. The two ends of the fixing plate 16 are fixed to the symmetrically arranged drainage ditch side plates 6. It is easy to understand that the fixing plate 16 is set close to the drainage ditch cover 10, that is, the fixing plate 16 and the bottom of the drainage ditch should maintain a large height to avoid obstructing leaves or other foreign objects flowing with the water in the drainage ditch; and even if some foreign objects are caught on the fixing plate 16, they can be cleaned by removing the drainage ditch cover 10 (of course, the end of the spring 9 can be set to contact the drainage ditch cover 10, rather than being fixedly connected).
[0028] In one feasible embodiment, flexible baffles are provided on both sides of the drainage ditch cover 10. One side of the flexible baffle is fixed to the drainage ditch cover 10, and the other side of the flexible baffle is fixed to the edge of the mounting groove 7. The flexible baffle or the vertical plate can block the internal space of the mounting groove 7 to prevent foreign objects from entering. If it is set as a vertical plate, then only one side of the vertical plate needs to be fixed to the drainage ditch cover 10.
[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A rutting-resistant asphalt pavement structure, characterized in that: The structure comprises, from bottom to top, a subbase, an intermediate layer, an adhesive layer, and a top layer. The intermediate layer is made of high-performance asphalt concrete of type EME-16 or EME-20, with a thickness of 40mm-60mm. The adhesive layer is made of epoxy asphalt adhesive, with 0.4kg-0.6kg of epoxy asphalt adhesive applied per square meter of the construction surface. The top layer is made of high-performance epoxy asphalt concrete of type ESMA-10 or ESMA-13, with a thickness of 30mm-50mm. The lower support layer has drainage ditch installation areas on both sides. Drainage ditch assemblies are provided in the drainage ditch installation areas. The drainage ditch assemblies include symmetrically arranged drainage ditch side plates. The drainage ditch side plates are fixed in the drainage ditch installation areas. A drainage ditch cover is provided at the upper end of the drainage ditch side plate. The drainage ditch cover is movably connected to the drainage ditch side plate. The drainage ditch cover is provided with several drainage grooves. Several top rods are provided directly below the drainage grooves. The top rods are arranged perpendicular to the drainage grooves, and the lower ends of the top rods are fixed to the drainage ditch side plate.
2. The rutting-resistant asphalt pavement structure according to claim 1, characterized in that: The side plate of the drainage ditch is provided with an installation groove, and a number of columns are provided in the installation groove. One end of the column is fixed to the side plate of the drainage ditch, and the other end of the column is slidably connected to the edge of the drainage ditch cover. Each column is fitted with a spring, one end of the spring is fixed to the side plate of the drainage ditch, and the other end of the spring is fixed to the drainage ditch cover.
3. The rutting-resistant asphalt pavement structure according to claim 2, characterized in that: The drainage ditch cover has several sliding holes on both sides of its edge. The sliding holes are slidably fitted onto the column. The drainage ditch cover has horizontal through grooves on both sides of its edge. The horizontal through grooves pass through several sliding holes on one side. The horizontal through grooves have vertical through grooves on the outer side of the side facing the middle of the drainage ditch cover. The vertical through grooves pass through the upper surface of the drainage ditch cover. The horizontal through grooves and vertical through grooves are interconnected to form an L-shaped through groove. A baffle is provided in the horizontal through groove. The baffle is located above the end of the column. A stop bar is provided in the vertical through groove.
4. The rutting-resistant asphalt pavement structure according to claim 3, characterized in that: A pull rope is provided on the contact surface between the baffle and the baffle bar. One end of the pull rope is fixed to the baffle, and the baffle bar is provided with a receiving groove for accommodating the pull rope.
5. The rutting-resistant asphalt pavement structure according to claim 1, characterized in that: The lower end of the top rod is provided with a fixing plate, the lower end of the top rod is fixed to the fixing plate, and the two ends of the fixing plate are fixed to the side plates of the drainage ditch arranged symmetrically.
6. The rutting-resistant asphalt pavement structure according to claim 5, characterized in that: The fixing plate is positioned close to the drainage ditch cover.
7. The rutting-resistant asphalt pavement structure according to claim 1, characterized in that: The drainage ditch cover is provided with flexible baffles on both sides. One side of the flexible baffle is fixed to the drainage ditch cover, and the other side of the flexible baffle is fixed to the edge of the mounting groove.