Asphalt pavement structure with anti-fatigue and self-drainage functions

Abstract

The utility model relates to the technical field of asphalt pavement structures, and provides an asphalt pavement structure with anti-fatigue and self-drainage functions, which comprises a foundation and a composite asphalt pavement structure, and the composite asphalt pavement structure is integrally arranged in a groove dug on the foundation. The whole composite asphalt pavement structure is sequentially provided with a base layer, a water guide layer, an erection layer, a first geotextile layer, a water storage layer, a second geotextile layer, an anti-fatigue layer and a porous asphalt pavement layer from bottom to top. According to the asphalt pavement structure, through reasonable hierarchical layout and advanced drainage design, the overall drainage efficiency of the pavement is remarkably improved. The combination of multiple measures of the porous asphalt layer, the water guide layer, the water storage layer, the water guide holes and the like not only ensures that rainwater can be rapidly discharged and reduces potential safety hazards caused by accumulated water and accumulated snow on the road surface, but also enhances the anti-fatigue performance and durability of the road surface and prolongs the service life of the road.

Description

TECHNICAL FIELD

[0001] The utility model relates to bituminous pavement structure technical field, concretely relates to a bituminous pavement structure with anti -fatigue and self -draining function. BACKGROUND

[0002] With the continuous advancement of urbanization, the scale and frequency of road traffic are increasing, and bituminous pavement is widely used in various road construction as the main road pavement form due to its good flatness, durability and convenient construction. The traditional bituminous pavement structure is usually composed of multiple layers, including base layer, surface layer and the like, to ensure the bearing capacity and service life of the road. In terms of drainage, in order to prevent rainwater accumulation from damaging the pavement, drainage ditches are usually set on the road shoulder, and rainwater is introduced into the underground drainage system through the sewer pipe, and finally discharged into the urban drainage network or deep drainage system. This drainage method improves the road waterlogging problem to some extent, but still has many shortcomings.

[0003] The existing bituminous pavement drainage system mainly relies on the drainage ditches on both sides and the underground drainage pipe, and its drainage effect is limited by the capacity of the drainage ditch and the layout design of the drainage pipe. In the case of heavy rainfall intensity or long duration, the drainage ditch may not be able to drain the accumulated water in time, resulting in road waterlogging, slippery road surface and affecting traffic safety. In addition, the traditional drainage system is easily blocked by impurities, sludge and the like, reducing the drainage efficiency and increasing the maintenance cost. In extreme weather conditions, the drainage capacity of the drainage system is limited, and water accumulation is prone to occur, which may even cause road damage and traffic accidents.

[0004] In addition, the existing drainage method is mainly concentrated in the road shoulder area, and there is a lack of effective internal pavement drainage measures, which leads to the accumulation of rainwater on the surface layer or base layer of the road, making it difficult to drain quickly and affecting the stability and service life of the road. At the same time, the traditional drainage system is difficult to cope with the increasing rainfall intensity and frequency, and there are problems of delayed drainage and insufficient drainage, which seriously restricts the flood control and drainage capacity of the road and the overall safety level.

[0005] Therefore, the present application provides a bituminous pavement structure with anti-fatigue and self-draining function to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to overcome the defects of the prior art, the purpose of the utility model is to provide a bituminous pavement structure with anti-fatigue and self-draining function.

[0007] To achieve the object, the technical scheme of the utility model is as follows: a kind of asphalt pavement structure with anti-fatigue and self-draining function, including foundation and composite asphalt pavement structure, composite asphalt pavement structure is wholly set in the recess inside being dug in foundation, composite asphalt pavement structure is sequentially set as base layer, water guide layer, erection layer, first geotextile layer, water storage layer, second geotextile layer, anti-fatigue layer and porous asphalt pavement layer from bottom to top, a plurality of water guide holes are formed in anti-fatigue layer, a plurality of water guide holes are evenly formed in erection layer, the top surface of water guide layer is provided with the slope surface inclined to both sides, the slope surface of both sides of the top of water guide layer is provided with the water guide groove for guiding water to both sides, the groove wall of both sides of composite asphalt pavement structure is buried with water guide culvert for being communicated with both sides of water guide layer and being distributed along the length direction of road, and water guide culvert is communicated with main drainage pipeline of deep layer of foundation by a plurality of drainage pipes.

[0008] Preferably, the porosity of the porous asphalt pavement layer is set to be in the range of 18% to 25%.

[0009] Preferably, the water guide layer is composed of a plurality of reinforced concrete plates spliced together.

[0010] Preferably, the erection layer is made of polyethylene material.

[0011] Preferably, the water storage layer is made of a plurality of water permeable bricks.

[0012] Preferably, the anti-fatigue layer is made of reinforced concrete material.

[0013] Preferably, a drainage ditch is arranged at the position of the shoulder of both sides of the composite asphalt pavement structure, and the drainage ditch and the water guide culvert on the same side are communicated by a plurality of downspouts.

[0014] Preferably, the bottom surface of the erection layer is adapted to the slope of the top surface of the water guide layer, and the top surface of the erection layer is flat.

[0015] Preferably, a plurality of water inlet holes are evenly formed on the inner side of the water guide culvert and communicated with the side surface of the water guide layer.

[0016] The utility model has the following beneficial effects:

[0017] Efficient drainage channel design: the water guide layer is composed of a plurality of reinforced concrete plates spliced together, the top slope is reasonably designed, can guide rainwater to flow out to both sides of the water guide groove, forms effective rainwater discharge path. The water guide groove is communicated with the water guide culvert, to ensure that rainwater can be quickly collected and introduced into the underground drainage system.

[0018] Multi-layer filtration and isolation mechanism: The first geotextile layer and the second geotextile layer are arranged at key positions to filter fine particles and prevent impurities from entering the water storage layer, ensuring the smoothness of the drainage system and the normal water storage function of the water storage layer, thereby avoiding blockage and poor drainage.

[0019] Efficient water storage and drainage capacity: The water storage layer is paved with permeable bricks, which have good water storage and permeability. During rainfall, it can temporarily store a large amount of rainwater, relieve drainage pressure, reduce road surface water, and improve driving safety and comfort.

[0020] Optimization of porous asphalt pavement layer: The porosity is set to 18% to 25%, ensuring that the pavement has good permeability, effectively accelerating the penetration speed of rainwater, reducing water film accumulation, reducing the risk of pavement icing and water sliding, and prolonging the service life of the pavement.

[0021] Perfect drainage system connection: The drainage ditches on both sides of the road shoulder form a closed drainage network with the sewer and water diversion culvert, ensuring that rainwater can be quickly drained at different locations, reducing water accumulation, and improving overall drainage efficiency.

[0022] Structural stability and durability: The fatigue-resistant layer adopts a reinforced concrete structure, effectively dispersing vehicle loads and prolonging the service life of the pavement. At the same time, the water guide holes and water inlet holes ensure that rainwater can smoothly enter the drainage system without affecting the drainage effect due to blockage.

[0023] In summary, the asphalt pavement structure significantly improves the overall drainage efficiency of the pavement through reasonable hierarchical layout and advanced drainage design. The combination of the porous asphalt layer with the water guide layer, water storage layer, and water guide holes ensures that rainwater can be quickly drained, reducing the safety hazards caused by road surface water and snow accumulation, and enhancing the fatigue resistance and durability of the pavement, prolonging the service life of the road. This structure not only meets the transportation demand but also effectively adapts to various complex climate conditions, greatly improving the drainage environment of the road and improving driving safety and comfort. It provides solid technical support for the sustainable development of urban roads. At the same time, the design has good construction feasibility and maintenance convenience, and has wide application prospects. BRIEF DESCRIPTION OF DRAWINGS

[0024] In the drawings:

[0025] Figure 1 is a structure schematic view of the section of the utility model;

[0026] Figure 2 is a structure schematic view of the composite asphalt pavement structure of the utility model;

[0027] Figure 3 is a structure schematic view of the water guide layer of the utility model;

[0028] Figure 4 It is the structure schematic view of the erecting layer of the utility model;

[0029] Figure 5 It is the structure schematic view of the anti-fatigue layer of the utility model;

[0030] Figure 6 It is the structure schematic view of the water guide culvert of the utility model;

[0031] Mark explanation:

[0032] 1, foundation; 2, composite asphalt pavement structure; 3, drainage ditch; 4, sewer; 5, water guide culvert; 6, drain pipe; 7, main drainage pipeline;

[0033] 21, base layer; 22, water guide layer; 23, erecting layer; 24, first geotextile layer; 25, water storage layer; 26, second geotextile layer; 27, anti-fatigue layer; 28, porous asphalt pavement layer;

[0034] 221, water guide groove;

[0035] 231, water guide hole;

[0036] 271, sewer hole;

[0037] 51, water inlet hole. Specific implementation

[0038] The utility model will be further explained in detail in combination with the drawings and embodiments, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. In the case of no conflict, the embodiment in the application and the features in the embodiment can be combined with each other. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0039] It should be noted that if the utility model embodiment involves directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, then the directionality indication also changes accordingly.

[0040] In addition, "a plurality of" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that the ordinary skill in the art can be realized, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not in the protection scope required by the utility model.

[0041] Please refer to the drawings in the accompanying drawings Figures 1-6 The utility model provides a kind of asphalt pavement structure with anti-fatigue and self-draining function, the asphalt pavement structure includes foundation 1 and composite asphalt pavement structure 2.Composite asphalt pavement structure 2 is wholly arranged in the recess inside excavation of foundation 1, is sequentially arranged as base layer 21, water guide layer 22, erection layer 23, first geotextile layer 24, water storage layer 25, second geotextile layer 26, anti-fatigue layer 27 and porous asphalt pavement layer 28 from bottom to top.

[0042] Wherein, base layer 21 is conventional concrete or graded broken stone base layer, provides stable bearing foundation for entire pavement.Water guide layer 22 is combined by a plurality of reinforced concrete plate splicing, top surface is designed as the slope surface that is inclined to two sides, and water guide groove 221 is equipped in the two sides of slope surface, for guiding rainwater to discharge to two sides.Water guide groove 221 in the two sides of the top of water guide layer 22 is connected with the water guide culvert 5 that is arranged in the groove wall of two sides of foundation 1, and water guide culvert 5 is distributed along the length direction of road, and is connected with the main drainage pipeline 7 that is buried in deep layer of foundation by a plurality of drain pipes 6, to realize the effective discharge of rainwater.

[0043] Erection layer 23 is made of polyethylene material as a whole, and the bottom surface structure is adapted to the slope of the top surface of water guide layer 22, to ensure good adhesion and stability, and the top surface is a plane.A plurality of water guide holes 231 are uniformly provided in erection layer 23 and anti-fatigue layer 27, the water guide holes penetrate erection layer 23 and anti-fatigue layer 27, form a water flow channel with water guide layer 22, and ensure that rainwater can penetrate from porous asphalt pavement layer 28 to water guide layer 22.

[0044] First geotextile layer 24 and second geotextile layer 26 are respectively arranged between erection layer 23 and water storage layer 25, and between water storage layer 25 and anti-fatigue layer 27, to filter and prevent fine particles from entering water storage layer 25.Water storage layer 25 is paved by a plurality of water permeable bricks, has good water storage and water permeability, can temporarily store rainwater, and relieve drainage pressure.

[0045] Anti-fatigue layer 27 is paved with reinforced concrete material, has excellent anti-fatigue performance, can effectively disperse vehicle load, and prolongs the service life of pavement.Porosity of porous asphalt pavement layer 28 is set to be between 18% and 25%, to ensure good water permeability of pavement, to realize rapid penetration and discharge of rainwater.

[0046] Drainage ditch 3 is arranged at the position of shoulder on both sides of composite asphalt pavement structure 2, drainage ditch 3 is connected with water guide culvert 5 on the same side by a plurality of downspouts 4, to form a complete drainage system.

[0047] A plurality of water inlet holes 51 are uniformly provided in the inner side of water guide culvert 5, water inlet holes 51 are connected with water guide layer 22 on both sides, to ensure that water in water guide layer can enter water guide culvert 5 in time, and further discharge from pavement.

[0048] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0049] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0050] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An asphalt pavement structure with anti-fatigue and self-drainage functions, comprising a foundation (1) and a composite asphalt pavement structure (2), characterized in that, The composite asphalt pavement structure (2) is arranged in the groove dug in the foundation (1), and is sequentially arranged from bottom to top as a base layer (21), a water guide layer (22), a supporting layer (23), a first geotextile layer (24), a water storage layer (25), a second geotextile layer (26), an anti-fatigue layer (27) and a porous asphalt pavement layer (28).

2. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The porosity of the porous asphalt pavement layer (28) is 18% to 25%.

3. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The water guide layer (22) is composed of a plurality of steel reinforced concrete plates.

4. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The supporting layer (23) is made of polyethylene.

5. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The water storage layer (25) is made of a plurality of water permeable bricks.

6. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The anti-fatigue layer (27) is made of steel reinforced concrete.

7. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The composite asphalt pavement structure (2) is arranged in the groove dug in the foundation (1), and is sequentially arranged from bottom to top as a base layer (21), a water guide layer (22), a supporting layer (23), a first geotextile layer (24), a water storage layer (25), a second geotextile layer (26), an anti-fatigue layer (27) and a porous asphalt pavement layer (28).

8. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, The bottom surface of the supporting layer (23) is adapted to the slope of the top surface of the water guide layer (22), and the top surface of the supporting layer (23) is a plane.

9. The asphalt pavement structure with anti-fatigue and self-drainage functions according to claim 1, characterized in that, A plurality of water inlet holes (51) are uniformly arranged on the inner side of the water guide culvert (5) and are connected to the side surface of the water guide layer (22).

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