CN217438596U - Pavement interlayer drainage structure - Google Patents

Abstract

The utility model discloses a pavement interlayer drainage structure, comprising a road subgrade, a road surface structure layer and a sidewalk pavement layer are arranged on the road subgrade, and a road surface structure layer and a sidewalk pavement layer are arranged between the roadway pavement structure layer and the sidewalk pavement layer. A drainage interlayer, the drainage interlayer is located at the edge of the road surface structure layer of the carriageway, and the drainage interlayer includes a drainage guide ditch and a high-strength water-permeable stone-like material flat stone arranged above the drainage guide ditch. The guide grooves are arranged along the length direction of the road surface structure layer of the carriageway. By setting a drainage interlayer at the edge of the pavement structure layer of the carriageway, the drainage area is increased, and the drainage and water accumulation capacity of the pavement is improved; the water on the pavement first penetrates through the high-strength water-permeable stone-like material flat stone and then enters the drainage guide ditch Drainage solves the problems of poor local drainage, slippery water, and splashing water on the road.

Description

A pavement interlayer drainage structure

technical field

The utility model relates to the technical field of pavement drainage, in particular to a pavement interlayer drainage structure.

Background technique

During road design, in order to achieve drainage, multiple gullies will be set at the lowest point of the road (at the edge of the road), and multiple gullies will be set at intervals along the length of the road; however, due to poor road construction quality and unevenness after operation Subsidence and other problems have resulted in the inability to effectively collect rainwater on the road by the rainwater gullies on the side of the road, resulting in serious water accumulation on the road surface. At the same time, the roadside sidewalk introduces rainwater to the side of the roadway through the sidewalk cross slope, which intensifies the pressure of roadway drainage to a certain extent. Long-term stagnant water on the road has great harm. First, the pavement surface water soaks the pavement material, which reduces the strength of the pavement material, accelerates the aging speed of the pavement material, and shortens the service life of the pavement material. Secondly, if the road surface water cannot be discharged in time, the rainwater will penetrate into the subgrade through the pores and cracks in the pavement, which will reduce the stability of the subgrade, and in severe cases, pits and landslides will be formed. Third, the water on the road surface makes the road slippery, which reduces the driving speed and increases the incidence of traffic accidents. Finally, when driving on a water-filled road, the water often splashes onto the sidewalk, causing inconvenience to pedestrians.

At present, granite or ordinary concrete materials are mostly used for road leveling stones. These materials have poor water permeability and cannot effectively penetrate and discharge road surface water. Defects in the drainage system have become an inherent stubborn disease of the road, and even endanger the normal use of the road structure and the safety of driving.

Utility model content

In view of this, the present utility model proposes a pavement interlayer drainage structure, which can solve the problem that the drainage performance of the existing road is not good enough.

The technical scheme of the present utility model is realized in this way:

A pavement interlayer drainage structure, comprising a road subgrade, a road subgrade is provided with a road surface structure layer and a sidewalk pavement layer, and a drainage interlayer is arranged between the roadway pavement structure layer and the sidewalk pavement layer, The drainage interlayer is located at the edge of the road surface structure layer of the carriageway. The length direction setting of the pavement structure layer of the carriageway.

As a further optional solution of the interlayer drainage structure of the pavement, the drainage interlayer is provided with a plurality of rainwater wells arranged at intervals, and the rainwater wells are provided with grid covers; the drainage guide ditch is connected to the rainwater well. Connected.

As a further optional solution of the pavement interlayer drainage structure, the drainage guide ditch is a drainage side ditch, and the drainage side ditch is made of cast-in-place concrete.

As a further optional solution of the interlayer drainage structure of the road surface, the drainage guide ditch is a drainage underdrain, and the drainage underdrain includes a coarse-grained material layer filled on the road subgrade and arranged in the coarse-grained material layer. The permeable pipe; the permeable pipe communicates with the rainwater well.

As a further optional solution of the pavement interlayer drainage structure, the coarse-grained material layer is crushed stone or gravel.

As a further optional solution of the interlayer drainage structure of the pavement, the road surface structure layer has a slope flowing toward the drainage interlayer, and the slope angle thereof is 0.5-3°.

As a further optional solution of the interlayer drainage structure of the pavement, the pavement pavement layer has a slope flowing toward the drainage interlayer, and the slope angle thereof is 0.5-3°.

As a further optional solution of the interlayer drainage structure of the road surface, the road surface structure layer includes a surface layer, a base layer and a sub-base, and the surface layer is permeable asphalt.

The beneficial effects of the utility model are as follows: by arranging a drainage interlayer at the edge position of the pavement structure layer of the roadway, the drainage area is increased, and the drainage and water accumulation capacity of the pavement is improved; the water on the pavement first penetrates through the high-strength water-permeable stone-like material The flat stone is then drained into the drainage guide ditch, which solves the problems of poor local drainage, slippery water, and splashing water on the road surface; the high-strength permeable stone-like material is used to replace the traditional granite or concrete flat stone, and the high-strength permeable stone-like material is used. It has the advantages of good water permeability, good mechanical properties and beautiful appearance.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a pavement interlayer drainage structure according to Embodiment 1;

2 is a schematic top view of the interlayer drainage structure of the pavement according to Embodiment 1;

FIG. 3 is a schematic structural diagram of the interlayer drainage structure of the pavement according to the second embodiment.

In the picture: 1. High-strength permeable stone-like material flat stone; 2. Side stone; 3. Drainage side ditch; 4. Road surface structure layer; 5. Road subgrade; 6. Sidewalk pavement; 7. Rainwater well; 8. Permeable pipe; 9. Coarse-grained material layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations Or the positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operation, so it cannot be construed as a limitation to the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

1-2, there is shown a pavement interlayer drainage structure, including a road subgrade 5 on which a road surface structure layer 4 and a pavement pavement layer 6 are arranged. Between the road surface structure layer 4 and the sidewalk pavement layer 6, there is a drainage interlayer, the drainage interlayer is located at the edge of the road surface structure layer 4, and the drainage interlayer includes a drainage guide ditch and a The high-strength water-permeable stone-like material flat stone 1 above the drainage guide ditch is arranged along the length direction of the road surface structure layer 4 of the carriageway. Wherein, the drainage guide ditch is a drainage side ditch 3, the drainage side ditch 3 is made of cast-in-place concrete, and the drainage side ditch 3 is partially reinforced with reinforcement to enhance the structural stability of the drainage side ditch 3. In specific use, the following designs can be adopted but are not limited to: the drainage side ditch 3 adopts a rectangular section with a width of 150mm and a depth of 100mm; the high-strength permeable stone-like material flat stone 1 has a thickness of 120mm and a width of 250mm. In addition, conventionally, in order to improve the aesthetics, a side stone 2 is provided on the side of the sidewalk pavement layer 6 close to the road surface structure of the roadway.

In this way, by setting a drainage interlayer at the edge position of the pavement structure layer 4 of the carriageway, the drainage area is increased, and the drainage and water accumulation capacity of the pavement is improved; The above-mentioned drainage guide ditch is used to drain away, which solves the problems of poor local drainage, slippery water, and splashing water on the road surface; the high-strength permeable stone-like material flat stone 1 is used to replace the traditional granite or concrete material flat stone, and the high-strength water-permeable stone-like material is water-permeable. It has the advantages of good mechanical properties, beautiful appearance and so on. Wherein, the high-strength water-permeable imitation stone material flat stone 1 can be the imitation stone ecological permeable brick with publication number CN113501678B.

Specifically, in order to further improve the drainage efficiency, referring to FIG. 2 , the drainage interlayer is provided with a plurality of rainwater wells 7 arranged at intervals, and the rainwater well 7 is provided with a grid cover; The rainwater well 7 is connected. Wherein, the rainwater can directly enter the rainwater well 7 through the grid cover, which ensures rapid drainage in the case of a large amount of precipitation.

Specifically, the road surface structure layer 4 of the traffic lane adopts a conventional three-layer structure, including a surface layer, a base layer and a sub-base; and the unique surface layer is permeable asphalt, and the porosity of the permeable asphalt after compaction is About 20%, the permeable asphalt can enhance the water seepage capacity of the whole pavement. Part of the rainwater penetrates into the permeable asphalt and flows into the drainage guide ditch along the base layer, while part of the rainwater directly flows into the drainage guide ditch on the surface of the permeable asphalt.

Specifically, in order to facilitate the rainwater on the road surface structure layer 4 and the sidewalk pavement layer 6 to flow into the drainage interlayer more smoothly, the road surface structure layer 4 of the roadway has a flow direction to the drainage layer. The slope of the drainage interlayer has a slope angle of 0.5-3°; the sidewalk pavement layer 6 has a slope flowing toward the drainage interlayer, and its slope angle is 0.5-3°.

Embodiment 2

The difference between the second embodiment and the first embodiment is that the drainage guide ditch is a drainage ditch, considering that the construction of the drainage side ditch 3 with cast-in-place concrete and steel bars is complicated and inconvenient, the drainage ditch is used instead; with reference to Figure 3, The drainage ditch includes a coarse-grained material layer 9 filled on the road subgrade 5 , and a water-permeable pipe 8 arranged in the coarse-grained material layer 9 ; the water-permeable pipe 8 communicates with the rainwater well 7 . Wherein, the coarse-grained material layer 9 is crushed stone or gravel. In this way, rainwater penetrates through the high-strength water-permeable stone-like material flat stone 1, and then penetrates through the coarse-grained material layer 9, then enters the water-permeable pipe 8, and the rainwater is drained along the water-permeable pipe 8 or into the rainwater well 7 .

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the within the scope of protection of the present invention.

Claims (8)

1. The utility model provides a pavement intersectional drainage structures, includes the road bed, be equipped with carriageway road surface structural layer and pavement layer of mating formation on the road bed, its characterized in that, be equipped with the drainage interstratified layer between carriageway road surface structural layer and the pavement layer of mating formation, the drainage interstratified layer is located carriageway road surface structural layer's border position, the drainage interstratified layer includes the drainage guide ditch and sets up the stone material flat stone that permeates water that excels in of drainage guide ditch top, the drainage guide ditch is followed the length direction setting of carriageway road surface structural layer.

2. The pavement interlayer drainage structure of claim 1, wherein a plurality of rainwater wells are arranged at intervals on the drainage interlayer, and a grating well cover is arranged on each rainwater well; the drainage guide ditch is communicated with the catch basin.

3. A pavement interlayer drainage structure according to claim 2, wherein the drainage guide trench is a gutter made of cast-in-place concrete.

4. A pavement interlayer drainage structure according to claim 2, wherein said drainage guide trench is a drainage underdrain, said drainage underdrain comprising a coarse material layer filled on said pavement foundation, a water permeable pipe provided in said coarse material layer; the permeable pipe is communicated with the catch basin.

5. A pavement interlayer drainage structure according to claim 4, wherein said coarse material layer is crushed stone or gravel.

6. The structure of claim 1, wherein the roadway surface structure layer has a slope of 0.5-3 ° to the drainage space.

7. The pavement interlayer drainage structure according to claim 1, wherein the pavement interlayer has a slope of 0.5-3 ° to the drainage interlayer.

8. The structure of claim 1 or 6, wherein the roadway surface structure layer comprises a surface layer, a base layer and a subbase layer, and the surface layer is permeable asphalt.

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