Drainage and noise reduction asphalt pavement structure for traffic and transportation engineering

Abstract

The utility model relates to the related technical field of asphalt pavement structures, in particular to a drainage and noise reduction asphalt pavement structure for traffic and transportation engineering, which comprises a broken stone hardcore arranged at the bottom of a foundation layer, a fine stone hardcore laid at the top end of the broken stone hardcore, and drainage pipes arranged above two sides of the fine stone hardcore. A dense-grade modified asphalt mixture layer is laid at the top end of the fine stone cushion layer, a porous asphalt concrete layer is laid at the top end of the dense-grade modified asphalt mixture layer, grid fixing plates are arranged at the top ends of the two sides of the broken stone cushion layer, the side ends of the grid fixing plates are inserted into the side portion of the foundation layer, and a planting area is arranged above the side portion of the foundation layer. A reinforcing plant layer is planted in the planting area, the part, inserted into the foundation layer, of the grid fixing plate is fixed through the reinforcing plant layer in the planting area, then the fine stone cushion layer is fixed through the grid fixing plate, and the situation that the fine stone cushion layer and the broken stone cushion layer are loosened due to long-term water flow erosion can be avoided; the overall asphalt pavement structure stability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt pavement structure, specifically a drainage and noise reduction asphalt pavement structure for transportation engineering. Background Technology

[0002] Most urban noise originates from vehicles on city roads. Vehicles not only generate noise during operation, but also from the pumping action between the vehicle and the road surface. This noise seriously affects the quality of life of city residents. Asphalt pavement, due to its advantages such as driving comfort, low noise, and convenient maintenance, is currently the main structural form of high-grade pavement in transportation engineering.

[0003] The applicant has discovered at least the following technical problems in the prior art: In order to ensure timely drainage during rainy weather and avoid water drift and water mist, thereby reducing the incidence of traffic accidents, existing noise-reducing asphalt pavements typically have drainage pipes and ditches installed on both sides of the mixture layer in the middle section of the asphalt pavement. However, since the drainage pipes and ditches drain water directly into the base layer of the lower section of the asphalt pavement structure, the bottom of the asphalt pavement structure is prone to loosening due to long-term water erosion, affecting the long-term service performance of the asphalt pavement structure. Therefore, those skilled in the art have proposed a drainage and noise-reducing asphalt pavement structure for transportation engineering to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this utility model is to provide a drainage and noise reduction asphalt pavement structure for transportation engineering, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A drainage and noise reduction asphalt pavement structure for transportation engineering includes a crushed stone subbase, which is placed at the bottom of the subgrade. A fine stone subbase is laid on top of the crushed stone subbase. Drainage pipes are installed above and on both sides of the fine stone subbase. A dense-grade modified asphalt mixture layer is laid on top of the fine stone subbase. A porous asphalt concrete layer is laid on top of the dense-grade modified asphalt mixture layer. Right-angled grooves are provided on the top and sides of the crushed stone subbase. Mesh fixing plates are installed within the right-angled grooves, with the top of the mesh fixing plates fitting against the bottom of the drainage pipes. The outer side of the fine stone subbase... The outer end of the grid fixing plate is attached to the outer end of the grid fixing plate. A curbstone is attached to the inner side wall of the grid fixing plate. The top of the curbstone is flush with the top of the porous asphalt concrete layer. The bottom side of the dense modified asphalt mixture layer is attached to the top of the drainage pipe. The side ends of the dense modified asphalt mixture layer and the side ends of the porous asphalt concrete layer are attached to the upper side ends of the curbstone. The side end of the grid fixing plate is inserted into the side of the subgrade. A planting area is set on the side of the subgrade and above the grid fixing plate. A reinforcing plant layer is planted in the planting area.

[0007] As a further embodiment of this utility model: the grid fixing plate includes a connected fine-hole grid plate and a coarse-hole grid plate, the fine-hole grid plate is in the shape of a right-angle plate, the coarse-hole grid plate is in the shape of a straight plate, the fine-hole grid plate is disposed in a right-angle groove, and the coarse-hole grid plate is inserted into the base layer.

[0008] As a further improvement of this utility model, a waterproof plate is attached to the outer wall of the fine-pore mesh plate.

[0009] As a further improvement of this utility model: a placement block is provided on the inner wall of the top of the drain pipe, and a screen is provided at the top of the drain pipe through the placement block.

[0010] As a further embodiment of this utility model: an adhesive layer is provided between the dense modified asphalt mixture layer and the fine stone cushion layer, and the outer wall of the drainage pipe is connected to the side end of the adhesive layer.

[0011] This utility model has the following advantages: In use, the structure can perform drainage through drainage pipes and a grid fixing plate. The side end of the grid fixing plate is inserted into the subgrade, and the reinforcing plant layer in the planting area fixes the portion of the grid fixing plate inserted into the subgrade. The grid fixing plate then fixes the fine stone cushion layer, preventing it from loosening due to long-term water erosion. A waterproof plate is installed around the grid fixing plate to guide the water flow towards the subgrade. The planting area on the side of the subgrade effectively stabilizes it, preventing water flow from affecting the subgrade and thus improving the overall structural stability of the asphalt pavement. Attached Figure Description

[0012] Figure 1 This is a front view of the overall internal structure of an embodiment of the present utility model.

[0013] Figure 2 This is a structural schematic diagram of the grid fixing plate in an embodiment of this utility model.

[0014] Figure 3 This is a schematic diagram of the drainage pipe in an embodiment of the present invention.

[0015] In the diagram: 1. Subbase; 101. Planting area; 2. Crushed stone subbase; 201. Right-angled groove; 3. Fine stone subbase; 4. Bonding layer; 5. Dense-grade modified asphalt mixture layer; 6. Porous asphalt concrete layer; 7. Drainage pipe; 701. Screen; 702. Placement block; 8. Waterproofing board; 9. Grid fixing board; 901. Fine-pore grid board; 902. Coarse-pore grid board; 10. Reinforced vegetation layer; 11. Curbstone. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0020] Example 1: Please refer to Figures 1 to 3 A drainage and noise reduction asphalt pavement structure for transportation engineering includes a crushed stone subbase 2, which is set at the bottom of a subbase 1. A fine stone subbase 3 is laid on top of the crushed stone subbase 2. Drainage pipes 7 are installed on both sides above the fine stone subbase 3. A dense modified asphalt mixture layer 5 is laid on top of the fine stone subbase 3. A porous asphalt concrete layer 6 is laid on top of the dense modified asphalt mixture layer 5. Right-angle grooves 201 are provided on both sides of the top of the crushed stone subbase 2. A grid fixing plate 9 is installed in the right-angle groove 201. The top of the grid fixing plate 9 is attached to the bottom of the drainage pipe 7. The outer ends of the fine stone subbase 3 are attached to the outer ends of the grid fixing plate 9. The inner wall of the grid fixing plate 9 is fitted with a curbstone 11, the top of the curbstone 11 is flush with the top of the porous asphalt concrete layer 6, the bottom side of the dense modified asphalt mixture layer 5 is fitted with the top of the drainage pipe 7, the side ends of the dense modified asphalt mixture layer 5 and the side ends of the porous asphalt concrete layer 6 are both fitted with the upper side ends of the curbstone 11, the side end of the grid fixing plate 9 is inserted into the side of the base layer 1, and a planting area 101 is set on the side of the base layer 1 and above the grid fixing plate 9. A reinforcing plant layer 10 is planted in the planting area 101, and the reinforcing plant layer 10 is selected from soil-stabilizing plants with well-developed root systems.

[0021] Please see Figure 1 , Figure 2 The grid fixing plate 9 includes a connected fine-pore grid plate 901 and a coarse-pore grid plate 902. The fine-pore grid plate 901 is in the shape of a right-angled plate, and the coarse-pore grid plate 902 is in the shape of a straight plate. The fine-pore grid plate 901 is disposed in the right-angled groove 201, and the coarse-pore grid plate 902 is inserted into the base layer 1. A waterproof plate 8 is attached to the outer wall of the fine-pore grid plate 901. The side ends of the crushed stone cushion layer 2 and the side ends of the fine stone cushion layer 3 are attached to the outer wall of the waterproof plate 8. The coarse-pore grid plate 902 is sandwiched between two fine-pore grid plates 901 for reinforcement, which can effectively prevent the fine stone cushion layer 3 from collapsing. The water discharged from the drain pipe 7 flows through the fine-pore grid plate 901 into the coarse-pore grid plate 902. The waterproof plate 8 can prevent the water in the fine-pore grid plate 901 from seeping into the gravel cushion layer 2. The coarse-pore grid plate 902 has larger pores, which can accommodate the roots of the reinforced plant layer 10 to pass through downwards, and thus fix the coarse-pore grid plate 902 through the roots of the reinforced plant layer 10.

[0022] Example 2: See Figure 1 , Figure 3Based on Embodiment 1, a placement block 702 is provided on the top inner wall of the drainage pipe 7, and a screen 701 is provided on the top of the drainage pipe 7 through the placement block 702. The top of the screen 701 is flush with the bottom of the dense modified asphalt mixture layer 5.

[0023] Please see Figure 1 An adhesive layer 4 is provided between the dense modified asphalt mixture layer 5 and the fine stone cushion layer 3. The outer wall of the drainage pipe 7 is connected to the side end of the adhesive layer 4. The adhesive layer 4 can reinforce the dense modified asphalt mixture layer 5 and the fine stone cushion layer 3, and at the same time, it can reinforce the drainage pipe 7. The adhesive layer 4 is made of waterproof adhesive material, which can prevent water in the dense modified asphalt mixture layer 5 from seeping downward into the fine stone cushion layer 3, but instead flow to the drainage pipes 7 on both sides.

[0024] Working principle: In use, a pre-embedded trench is dug on the base course 1. From bottom to top, the following layers are laid in sequence: crushed stone cushion layer 2, grid fixing plate 9, fine stone cushion layer 3, adhesive layer 4, curbstone slab 11, dense modified asphalt mixture layer 5, and porous asphalt concrete layer 6. The periphery of the curbstone slab 11 is then filled to form a planting area 101. A reinforcing plant layer 10 is planted in the planting area 101. The roots of the reinforcing plant layer 10 fix the grid fixing plate 9. Water from the asphalt pavement flows along the porous asphalt concrete layer 6 into the dense modified asphalt mixture layer 5, and then flows through the drainage pipes 7 on both sides of the dense modified asphalt mixture layer 5 into the grid fixing plate 9. Finally, the water is discharged into the base course 1 on both sides through the grid fixing plate 9, thus preventing the crushed stone cushion layer 2 and the fine stone cushion layer 3 from being directly eroded by water flow.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. 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 can be understood by those skilled in the art.

Claims

1. A drainage and noise reduction asphalt pavement structure for transportation engineering, comprising a crushed stone subbase, characterized in that, The crushed stone cushion layer is placed at the bottom of the subgrade. A fine stone cushion layer is laid on top of the crushed stone cushion layer. Drainage pipes are installed above and on both sides of the fine stone cushion layer. A dense-grade modified asphalt mixture layer is laid on top of the fine stone cushion layer. A porous asphalt concrete layer is laid on top of the dense-grade modified asphalt mixture layer. Right-angle grooves are provided at the top of both sides of the crushed stone cushion layer. A grid fixing plate is installed in the right-angle groove. The top of the grid fixing plate is attached to the bottom of the drainage pipe. The outer ends of the fine stone cushion layer are attached to the outer ends of the grid fixing plate. The inner wall of the grid fixing plate is fitted with a curbstone slab. The top of the curbstone slab is flush with the top of the porous asphalt concrete layer. The bottom side of the dense modified asphalt mixture layer is fitted with the top of the drainage pipe. The side ends of the dense modified asphalt mixture layer and the side ends of the porous asphalt concrete layer are both fitted with the upper side ends of the curbstone slab. The side end of the grid fixing plate is inserted into the side of the subgrade. A planting area is set on the side of the subgrade and above the grid fixing plate. A reinforcing plant layer is planted in the planting area.

2. The drainage and noise reduction asphalt pavement structure for transportation engineering according to claim 1, characterized in that, The grid fixing plate includes a connected fine-hole grid plate and a coarse-hole grid plate. The fine-hole grid plate is in the shape of a right-angle plate, and the coarse-hole grid plate is in the shape of a straight plate. The fine-hole grid plate is set in a right-angle groove, and the coarse-hole grid plate is inserted into the base layer.

3. The drainage and noise reduction asphalt pavement structure for transportation engineering according to claim 2, characterized in that, A waterproof membrane is attached to the outer wall of the fine-mesh plate.

4. The drainage and noise reduction asphalt pavement structure for transportation engineering according to claim 1, characterized in that, A placement block is provided on the inner wall of the top of the drain pipe, and a screen is provided at the top of the drain pipe through the placement block.

5. The drainage and noise reduction asphalt pavement structure for transportation engineering according to claim 1, characterized in that, An adhesive layer is provided between the dense modified asphalt mixture layer and the fine stone cushion layer, and the outer wall of the drainage pipe is connected to the side end of the adhesive layer.

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