Asphalt pavement structure

Abstract

The utility model provides an asphalt pavement structure, which relates to the technical field of road engineering and comprises a roadbed layer, a cushion layer, a subbase layer, a base layer, a waterproof layer, an asphalt surface layer and a permeable piece. According to the asphalt pavement structure, when the asphalt pavement structure is laid, drainage ditches are formed in the two sides, the asphalt pavement is laid in a segmented mode till the whole road is laid, and laying is conducted according to the sequence that a roadbed layer, a cushion layer, a subbase layer, a base layer, a waterproof layer and an asphalt surface layer are sequentially stacked upwards; the drainage ditches are lower than the asphalt surface layer, so that accumulated water on the asphalt surface layer can flow to the drainage ditches on the two sides, part of the accumulated water on the asphalt surface layer permeates downwards, penetrates through the cracks along the cambered surface of the flow guide part and enters the water collecting pipe, and water permeating from the asphalt surface layer enters the water collecting pipe through the opening of the water collecting pipe. Meanwhile, the accumulated water is collected from a plurality of positions on the asphalt surface, so that the drainage speed is greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to an asphalt pavement structure. Background Technique

[0002] The asphalt pavement structure refers to the road surface layer composed of multiple layers, whose main purpose is to provide a good driving surface, disperse vehicle loads, and protect the roadbed and foundation. The drainage speed of the asphalt pavement structure is crucial for the good maintenance and extended service life of the road surface. Although asphalt mixture is water-resistant, long-term immersion in water will soften the binder in the asphalt, leading to the damage and cracking of the road surface, affecting the bearing capacity and flatness of the road surface. The accumulated water will affect the vehicle's grip and driving stability. Especially in places with large traffic flow such as highways, good drainage can reduce the potential safety hazards caused by accumulated water.

[0003] After retrieval, the Chinese patent with the publication number "CN213507883U" provides an "asphalt pavement structure. By providing a noise-proof layer on the asphalt surface layer, the noise generated by vehicle driving is reduced, and the edge of the asphalt surface layer is set in an arc shape. By providing a sewer at the connection between the road shoulder and the double layer, and by changing the structure of the asphalt surface layer, the accumulated water can enter the drainage channel along the opening of the drain pipe and the filter cover, thus accelerating the drainage efficiency". Although this asphalt pavement structure has openings provided on the drain pipe, the accumulated water can penetrate through the asphalt surface and enter the drain pipe through the openings provided on the drain pipe for drainage, accelerating the drainage efficiency. However, this asphalt pavement structure cannot collect the accumulated water from multiple positions on the asphalt surface simultaneously, and the collection speed of the accumulated water penetrating into the asphalt surface is relatively slow. The accumulated water needs to slowly penetrate and flow to the opening of the drain pipe on one side of the asphalt pavement before it can be discharged. Long-term immersion in water will cause the softening of the asphalt pavement, and the water will accelerate the aging and damage of the asphalt, thus affecting the structural stability of the road surface. Content of the Utility Model

[0004] The utility model provides an asphalt pavement structure, which solves the problem that the asphalt pavement structure in the above background technique cannot collect the accumulated water from multiple positions on the asphalt surface simultaneously, and the collection speed of the accumulated water penetrating into the asphalt surface is relatively slow.

[0005] To achieve the above object, the present utility model provides the following technical solutions: An asphalt pavement structure, including a road base layer, a cushion layer, a subbase layer, a base layer, a waterproof layer, an asphalt surface layer and a water permeable member. A cushion layer is provided at the upper end of the road base layer. A subbase layer is provided at the upper end of the cushion layer. A plurality of water collecting pipes are embedded in the subbase layer. A bottom pipe is fixedly connected to the lower end of the water collecting pipe, and the bottom pipe communicates the plurality of water collecting pipes. A base layer is provided at the upper end of the subbase layer. A plurality of channels are horizontally arranged inside the base layer. A water permeable component is provided at the upper opening of the channel. The water permeable component is composed of two groups of water permeable members symmetrically arranged with respect to the channel. A gap is left between the two groups of water permeable members. The positions of the water collecting pipes correspond to those of the channels. A waterproof layer is provided at the upper end of the base layer. An asphalt surface layer is provided at the upper end of the waterproof layer.

[0006] Preferably, the water collecting pipes are horizontally arranged along the extension direction of the subbase layer.

[0007] Preferably, the upper end of the water collecting pipe is open, and the two ends of the water collecting pipe are closed.

[0008] Preferably, a waterproof glue coating is provided on the inner side surface of the channel.

[0009] Preferably, the width dimension of the gap is less than 5 mm.

[0010] Preferably, fixing grooves are vertically opened at both ends of the upper opening of the channel.

[0011] Preferably, the water permeable member includes a fixing part and a guiding part. The fixing part is fixed inside the fixing groove, and a guiding part is fixedly connected to one side of the fixing part.

[0012] Preferably, the side surface of the guiding part is an arc surface.

[0013] Preferably, drain grooves are provided on both sides of the road base layer. A filter cover is provided at the upper opening of the drain groove, and a groove is formed between the drain groove and the filter cover.

[0014] Preferably, both ends of the bottom pipe are communicated with the groove.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. When laying the asphalt pavement structure, drainage ditches are set on both sides. The asphalt pavement is laid in sections until the entire road is paved. It is laid in the order of road base course, cushion layer, sub-base course, base course, waterproof layer, and asphalt surface course, stacked upwards in sequence. After laying the cushion layer, a plurality of water collecting pipes are connected and communicated with the bottom pipe and placed on the cushion layer, so that the bottom pipe is butted and communicated with the grooves of the drainage ditches on both sides. Then the sub-base course is laid and the water collecting pipes and the bottom pipe are buried. After laying the base course, a plurality of grooves are excavated on the base course, and a waterproof glue coating is applied to the inner side surface of the grooves. Fixing grooves are excavated on both sides of each groove, and the fixing parts of the water permeable parts are inserted into the fixing grooves. The water permeable parts in the two fixing grooves on both sides are symmetrically arranged, and there is a gap between the bottom ends of the diversion parts between the two groups of water permeable parts to form a slit. The waterproof layer is covered on the non-grooved surface of the base course, and the asphalt surface course is covered on the base course.

[0017] 2. The height of the drainage ditch is lower than the height of the asphalt surface course, which is beneficial to the accumulated water on the asphalt surface course flowing towards the drainage ditches on both sides. Part of the accumulated water on the asphalt surface course seeps downwards, passes through the slit along the arc surface of the diversion part and enters the water collecting pipe, and the water seeping down from the asphalt surface course enters the water collecting pipe through the opening of the water collecting pipe and flows out from the bottom pipe into the drainage ditch. At the same time, the accumulated water is collected from multiple positions on the asphalt surface, greatly improving the drainage speed. Brief Description of the Drawings

[0018] Figure 1 Schematic diagram of the asphalt pavement structure of the present utility model;

[0019] Figure 2 Cross-sectional schematic diagram of the asphalt pavement structure of the present utility model;

[0020] Figure 3 For Figure 2 Enlarged view of part A;

[0021] Figure 4 Schematic diagram of the installation position structure of the water collecting pipe and the bottom pipe of the present utility model;

[0022] Figure 5 For Figure 4 Enlarged view of part B;

[0023] Figure 6 Schematic diagram of the cooperation structure of the water collecting pipe and the bottom pipe of the present utility model;

[0024] Figure 7 Schematic diagram of the water permeable part structure of the present utility model.

[0025] Numbers in the figure: 1. road base; 2. cushion layer; 3. subbase; 31. water collecting pipe; 32. bottom pipe; 4. base layer; 41. channel; 42. fixing groove; 5. waterproof layer; 6. asphalt surface layer; 7. permeable part; 71. fixing part; 72. guide part; 73. gap; 8. drainage ditch; 81. filter cover; 82. groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides an asphalt pavement structure, such as Figure 1 and Figure 2 As shown, it includes a road base layer 1, a cushion layer 2, a subbase layer 3, a base layer 4, a waterproof layer 5, an asphalt surface layer 6 and a water-permeable member 7. The upper end of the road base layer 1 is provided with a cushion layer 2, and the upper end of the cushion layer 2 is provided with a subbase layer 3. A plurality of water collecting pipes 31 are embedded in the subbase layer 3. Figure 4 and 6 As shown, the lower end of the water collecting pipe 31 is fixedly connected with a bottom pipe 32, and the bottom pipe 32 connects multiple water collecting pipes 31. The water collecting pipe 31 is horizontally placed along the extension direction of the subbase 3, and the upper end of the water collecting pipe 31 is open, and the two ends of the water collecting pipe 31 are closed. When paving the asphalt pavement structure, it is paved in sections until the entire road is paved, and the road base 1, cushion layer 2, subbase 3, base layer 4, waterproof layer 5 and asphalt surface layer 6 are laid in the order of stacking upwards. After the cushion layer 2 is laid, multiple water collecting pipes 31 are connected and connected with the bottom pipe 32, and placed on the cushion layer 2, so that the bottom pipe 32 is connected with the grooves 82 of the drainage ditch 8 on both sides, and then the subbase 3 is laid and the water collecting pipe 31 and the bottom pipe 32 are buried. The water seeping from the asphalt surface layer 6 enters the water collecting pipe 31 through the opening of the water collecting pipe 31, and flows out from the bottom pipe 32 to the drainage ditch 8.

[0028] like Figure 2 and Figure 4 As shown, a base layer 4 is provided at the upper end of the bottom base layer 3, and a plurality of grooves 41 are arranged transversely inside the base layer 4. The water collecting pipe 31 corresponds to the position of the groove 41, and a waterproof adhesive coating is provided on the inner side of the groove 41 to prevent the water in the water collecting pipe 31 from evaporating and adhering to the inner wall of the groove 41 and infiltrating into the base layer 4. Figure 5As shown in the figure, fixed slots 42 are vertically opened at both ends of the upper opening of the channel 41. After laying the base course 4, a plurality of channels 41 are excavated on the base course 4, and fixed slots 42 are excavated on both sides of each channel 41. As Figure 3 shown in the figure, a water permeable component is provided at the upper opening of the channel 41. The water permeable component is composed of two groups of water permeable members 7 symmetrically arranged with respect to the channel 41. A gap 73 is left between the two groups of water permeable members 7, and the width dimension of the gap 73 is less than 5 mm. The diameter of the asphalt particles is greater than 5 mm. When laying the asphalt surface layer 6, the asphalt particles cannot flow out from the gap 73. As Figure 7 shown in the figure, the water permeable member 7 includes a fixing portion 71 and a guiding portion 72. The fixing portion 71 is fixed inside the fixed slot 42. One side of the fixing portion 71 is fixedly connected with the guiding portion 72, and the side surface of the guiding portion 72 is an arc surface. The fixing portion 71 of the water permeable member 7 is inserted into the fixed slot 42. The water permeable members 7 in the two side fixed slots 42 are symmetrically arranged. A gap is left at the bottom end of the guiding portions 72 between the two groups of water permeable members 7 to form the gap 73. Part of the accumulated water on the asphalt surface layer 6 seeps downward, passes through the gap 73 along the arc surface of the guiding portion 72, and enters the collecting pipe 31.

[0029] As Figure 1 and Figure 2 shown in the figure, a waterproof layer 5 is provided at the upper end of the base course 4, and an asphalt surface layer 6 is provided at the upper end of the waterproof layer 5. The asphalt surface layer 6 is covered by a permeable asphalt surface layer. The waterproof layer 5 is covered by polymer modified asphalt concrete laid on the non-grooved surface of the base course 4. The durability and water penetration resistance of the polymer modified asphalt concrete can be improved through the modification of the polymer, preventing water flow from seeping from the asphalt surface layer 6 into the base course 4.

[0030] As Figure 1 and Figure 2 shown in the figure, drainage ditches 8 are provided on both sides of the road base course 1. A filter cover 81 is provided at the upper opening of the drainage ditch 8. A groove 82 is formed between the drainage ditch 8 and the filter cover 81. Both ends of the bottom pipe 32 are communicated with the groove 82. The height of the drainage ditch 8 is lower than the height of the asphalt surface layer 6, which is beneficial to the accumulated water on the asphalt surface layer 6 flowing to the drainage ditches 8 on both sides, improving the drainage speed.

[0031] Adopting the present utility model, as Figure 1 and Figure 2As shown, when laying the asphalt pavement structure, drainage ditches 8 are provided on both sides. The asphalt pavement is laid in sections until the entire road is paved. It is laid in the order of road base course 1, cushion 2, sub-base course 3, base course 4, waterproof layer 5, and asphalt surface course 6, stacked upward in sequence. After laying the cushion 2, a plurality of water collecting pipes 31 are connected and communicated with the bottom pipe 32 and placed on the cushion 2 so that the bottom pipe 32 is butted and communicated with the grooves 82 of the drainage ditches 8 on both sides. Then the sub-base course 3 is laid and the water collecting pipes 31 and the bottom pipe 32 are buried. After laying the base course 4, a plurality of grooves 41 are excavated on the base course 4. A waterproof glue coating is applied to the inner side surfaces of the grooves 41. Fixing grooves 42 are excavated on both sides of each groove 41. The fixing parts 71 of the water permeable members 7 are inserted into the fixing grooves 42. The water permeable members 7 in the fixing grooves 42 on both sides are symmetrically arranged. There is a gap formed as a slit 73 at the bottom end of the diversion part 72 between the two groups of water permeable members 7. The waterproof layer 5 is covered on the un-grooved surface of the base course 4. The asphalt surface course 6 is covered on the base course 4. The height of the drainage ditch 8 is lower than the height of the asphalt surface course 6, which is conducive to the accumulated water on the asphalt surface course 6 flowing to the drainage ditches 8 on both sides. Some of the accumulated water on the asphalt surface course 6 seeps downward, passes through the slit 73 along the arc surface of the diversion part 72 and enters the water collecting pipes 31. The water seeping down from the asphalt surface course 6 enters the water collecting pipes 31 through the openings of the water collecting pipes 31 and flows out from the bottom pipe 32 into the drainage ditches 8. At the same time, the accumulated water is collected from multiple positions on the asphalt surface, greatly improving the drainage speed.

[0032] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. An asphalt pavement structure, characterized in that, It includes a road base course (1), a cushion layer (2), a sub-base course (3), a base course (4), a waterproof layer (5), an asphalt surface course (6) and a permeable member (7). A cushion layer (2) is provided at the upper end of the road base course (1). A sub-base course (3) is provided at the upper end of the cushion layer (2). A plurality of water collecting pipes (31) are embedded in the sub-base course (3). A bottom pipe (32) is fixedly connected to the lower end of the water collecting pipe (31). The bottom pipe (32) communicates the plurality of water collecting pipes (31). A base course (4) is provided at the upper end of the sub-base course (3). A plurality of channel grooves (41) are horizontally arranged inside the base course (4). A permeable component is provided at the upper opening of the channel groove (41). The permeable component is composed of two groups of permeable members (7) symmetrically arranged with respect to the channel groove (41). A gap (73) is left between the two groups of permeable members (7). The position of the water collecting pipe (31) corresponds to that of the channel groove (41). A waterproof layer (5) is provided at the upper end of the base course (4). An asphalt surface course (6) is provided at the upper end of the waterproof layer (5).

2. The asphalt pavement structure according to claim 1, characterized in that, The water collecting pipe (31) is horizontally arranged along the extension direction of the sub-base course (3).

3. The asphalt pavement structure according to claim 2, characterized in that, The upper end of the water collecting pipe (31) is open, and the two ends of the water collecting pipe (31) are closed.

4. A bituminous pavement structure according to claim 1, characterized in that, A waterproof glue coating is provided on the inner side surface of the channel groove (41).

5. A bituminous pavement structure according to claim 1, characterized in that, The width dimension of the gap (73) is less than 5 mm.

6. A bituminous pavement structure according to claim 5, characterized in that, Fixing grooves (42) are vertically opened at both ends of the upper opening of the channel groove (41).

7. An asphalt pavement structure according to claim 6, characterized in that, The permeable member (7) includes a fixing part (71) and a diversion part (72). The fixing part (71) is fixed inside the fixing groove (42). A diversion part (72) is fixedly connected to one side of the fixing part (71).

8. A bituminous pavement structure according to claim 7, characterized in that, The side surface of the diversion part (72) is an arc surface.

9. A bituminous pavement structure according to claim 1, characterized in that, Drainage ditches (8) are provided on both sides of the road base course (1). A filter cover (81) is provided at the upper opening of the drainage ditch (8). A groove (82) is formed between the drainage ditch (8) and the filter cover (81).

10. A bituminous pavement structure according to claim 9, characterized in that, Both ends of the bottom pipe (32) are communicated with the groove (82).

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