CN108411728A - Surface drainage - Google Patents

Abstract

The present invention relates to a pavement drainage system. The pavement drainage system comprises a sand base, a concrete layer and a pavement block layer laminated on the sand base; the pavement block layer includes a plurality of pavement pavements laid on the concrete layer module, a seepage joint is set between two adjacent road surface modules, and the concrete layer is provided with a plate joint connected with the sand base, and the seepage joint is connected with the plate joint; the road surface The drainage system also includes a rainwater pipe located at the edge of the road, the rainwater pipe is at least partially connected to the sand base, the rainwater enters the plate seam through the seepage joint and then enters the sand base, and at least part of the rainwater flows along the sand base. The sand base enters the stormwater pipe and exits the stormwater pipe. The pavement drainage system adopts common building materials, has low cost, is convenient for construction and maintenance, has high strength, can infiltrate, store and purify rainwater, and is widely applicable.

Description

Pavement drainage system

technical field

The invention relates to the technical field of engineering, in particular to a pavement drainage system.

Background technique

The construction of the sponge city has entered the stage of full implementation. During the construction of the sponge city, the material used for the general permeable pavement is a permeable material, which can quickly eliminate the accumulation of water in roads and other places when it rains, and can reduce urban drainage when it rains intensively. The burden of facilities to prevent river flooding and water pollution. At present, the permeable pavement materials used are mainly permeable concrete, permeable asphalt, and permeable bricks. However, these permeable pavement materials have common disadvantages: high environmental requirements, easy to block, difficult maintenance, and expensive.

Therefore, there is a need for a pavement drainage system that is low in cost but can infiltrate, store and purify rainwater instead of using permeable pavement materials.

Contents of the invention

Based on this, it is necessary to provide a pavement drainage system to solve the above problems. The pavement drainage system is made of common materials, which is low in cost, convenient in construction and maintenance, high in strength, capable of infiltrating, storing and purifying rainwater, and widely applicable.

A pavement drainage system, the pavement drainage system comprising a sand base and a concrete layer and a road slab layer laminated on the sand base;

The pavement block layer includes a plurality of pavement modules laid on the concrete layer, seepage joints are provided between two adjacent pavement modules, and the concrete layer is provided with a plate seam that communicates with the sand base , the seepage seam is connected to the plate seam;

The pavement drainage system also includes a rainwater pipe located at the edge of the road, the rainwater pipe is at least partially connected to the sand base, the rainwater enters the plate seam through the seepage joint and then enters the sand base, at least part of the rainwater Enter the rainwater pipe along the sand base, and discharge from the rainwater pipe.

In one of the embodiments, the pavement drainage system further includes at least two curb stones located at the edge of the road, the height of the curb stones is not higher than the height of the pavement block layer, and the distance between two adjacent curb stones is Create drainage channels.

In one embodiment, the pavement drainage system further includes a drainage ditch located between the sand base and the rainwater pipe, and the drainage ditch communicates with both the sand base and the rainwater pipe.

In one embodiment, when the sand base extends to the edge of the road, it is convex downward to form a convex portion, and the bottom of the drainage ditch extends to the convex portion.

In one of the embodiments, the drainage ditch is in communication with the drainage channel.

In one of the embodiments, the four sides of the bottom surface of the pavement module are chamfered surfaces.

In one of the embodiments, the pavement module includes at least one of stone and prefabricated bricks.

In one of the embodiments, the seepage joints are filled with coarse sand, and the particle size of the coarse sand is ≥2 mm.

In one embodiment, the slab seams are filled with graded sand and gravel, and the particle size of the graded sand and gravel is 2 mm to 15 mm.

In one of the embodiments, the particle size of the graded sand at the connection between the plate seam and the sand base is greater than the particle size of the graded sand at the connection between the plate seam and the permeable seam.

The above pavement drainage system has the following advantages:

1. The pavement drainage system is provided with seepage joints and plate joints. The rainwater infiltrates the seepage joints and penetrates into the sand base through the plate joints. After purification, part of the rainwater in the sand base penetrates into the ground, and part of it flows into the drainage ditch through the sand base, and then drains through the rainwater pipe. into the rainwater system. When the amount of rainwater exceeds the infiltration capacity of seepage joints and plate joints, the excess rainwater will flow directly through the drainage channel into the drainage ditch after runoff from the road surface, and then be discharged into the rainwater pipe network system through the drainage ditch. The pavement drainage system has the functions of infiltrating, storing and purifying rainwater.

2. The seepage joints of the pavement drainage system are filled with coarse sand, and the slab joints are filled with graded sand and gravel. The particle size of the graded sand and gravel increases from the seepage joint to the sand base in order to prevent the coarse sand in the seepage joint from Rainwater flows into the voids in the sand base.

3. The four sides of the bottom surface of the pavement module of the pavement drainage system are oblique cut surfaces, which form a permeable joint with a figure-eight cross-section, which can increase the cross-section of the permeable joint and make the permeable joint more permeable.

4. The pavement drainage system adopts common building materials, which is convenient for construction and maintenance and low in cost.

Description of drawings

Fig. 1 is the sectional schematic view of pavement drainage system of the present invention;

Fig. 2 is the paving plane schematic diagram of the pavement drainage system of the present invention;

Fig. 3 is the concrete layer pavement schematic diagram of pavement drainage system of the present invention;

Fig. 4 is a schematic cross-sectional view of a pavement module of the pavement drainage system of the present invention.

In the figure: 1. Sand base; 2. Concrete layer; 3. Pavement block layer; 4. Curb stone; 5. Drainage ditch; 6. Rainwater pipe; 11. Convex part; Seepage joint; 41. Drainage channel.

Detailed ways

The following are specific embodiments of the present invention, and further describe the technical solution of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in Figure 1, the pavement drainage system provided by the present invention has low cost, convenient construction and maintenance, high strength, can infiltrate, store and purify rainwater, is widely applicable, and can be used in the construction of sponge cities.

The pavement drainage system comprises a sand base 1 and a concrete layer 2 and a pavement block layer 3 laminated on the sand base 1 . In actual construction, the sand base 1 is laid on the roadbed. In the pavement drainage system, a concrete layer 2 is laid between the sand base 1 and the pavement block layer 3, so that the strength of the pavement drainage system is higher.

As shown in Figures 1 to 3, the pavement block layer 3 includes a plurality of pavement modules 31 laid on the concrete layer 2, the pavement modules 31 and the concrete layer 2 are bonded by mortar, and two adjacent pavement modules Permeable joints 32 are provided between the pavement modules 31 . The concrete layer 2 is provided with a plate joint 21 connected to the sand base 1 , and the seepage joint 32 is connected to the plate joint 21 . A rainwater pipe 6 is also laid at the road edge of the road surface drainage system, and the rainwater pipe 6 is at least partially connected to the sand base 1 . The rainwater infiltrates into the plate seam 21 through the seepage joint 32, and then infiltrates into the sand base 1 through the plate joint 21. After purification, part of the rainwater in the sand base 1 infiltrates into the ground, and part of it enters through the sand base 1. The rainwater pipe 6 is discharged to the rainwater pipe network system through the rainwater pipe 6 .

Preferably, the pavement drainage system further includes a drainage ditch 5 located between the sand base 1 and the rainwater pipe 6 , and the drainage ditch 5 communicates with both the sand base 1 and the rainwater pipe 6 . Further, the drainage ditch 5 is connected to the sand base 1 through holes, and the holes are arranged at the bottom and sides of the drainage ditch 5 . Rainwater infiltrates into the seepage joint 32 through the plate seam 21 and infiltrates into the sand base 1. After purification, part of the rainwater in the sand base 1 infiltrates into the ground, and part of it flows through the sand base 1 and is discharged into the drain 5 through the hole in the drainage ditch 5, and then drained through the rainwater pipe 6. into the rainwater system.

Preferably, when the sand base 1 extends to the edge of the road, it protrudes downward to form a convex portion 11 , and the bottom of the drainage ditch 5 extends to the convex portion 11 . Ensure that the bottom of the drainage ditch 5 is lower than the contact surface between the sand base 1 and the roadbed, so that the rainwater in the sand base 1 can better infiltrate into the drainage ditch 5, and then be discharged into the rainwater pipe network system through the rainwater pipe 6. Further, since the bottom of the drainage ditch 5 is provided with holes, the rainwater in the drainage ditch 5 can penetrate into the sand base 1 in the convex portion 11 again, and then penetrate into the ground.

The pavement drainage system also includes at least two curbstones 4 located at the edge of the road, the height of the curbstones 4 is not higher than the height of the pavement block layer 3, and a drainage channel is formed between two adjacent curbstones 4 41, the drainage ditch 5 is also connected to the drainage channel 41. When the amount of rainwater exceeds the seepage capacity of the seepage joints 32 and the plate joints 21, the excess rainwater flows directly through the drainage channel 41 into the drainage ditch 5 through the runoff of the road surface, and then is discharged into the rainwater pipe network system through the drainage ditch 5.

The material of the sand base 1 can be gravel sand, graded crushed stone, coarse-grained crushed stone, block stone, etc., and the paving can meet the road design requirements. The infiltration seam 32 is filled with coarse sand, and the grain size of the coarse sand is greater than or equal to 2 mm. Considering the width of the infiltration seam 32 and the smoothness of the road surface, the grain size of the coarse sand is more preferably 2 mm to 4.75 mm. The plate seams 21 are filled with graded sand and gravel, and the particle size of the graded sand and gravel is 2 mm to 15 mm, and the particle size of the graded sand and gravel at the conduction point between the plate joints 21 and the sand base 1 is larger than that of the plate The particle size of the graded sand and gravel at the connection between the seam 21 and the permeable joint 32, that is, the grain size of the graded sand and gravel in the plate joint 21 is coarse at the bottom and fine at the top, so as to prevent the coarse sand in the seepage joint 32 from flowing into the sand base with rainwater 1 in the gap.

As shown in Figure 4, the four sides of the bottom surface of the pavement module 31 are oblique cut surfaces. After paving to form the pavement block layer 3, two adjacent pavement modules 31 form a permeable joint 32 with a figure-eight section, which can increase the permeable joint 32. Cross-section, so that the permeation capacity of the permeable seam 32 is stronger. Preferably, the pavement module includes at least one of stone and prefabricated bricks. Stone and prefabricated bricks are common building materials, which are convenient for construction and maintenance, and the total cost is low.

The construction sequence of the road surface drainage system is: subgrade compaction (including subgrade treatment and reinforcement construction, etc.), then carry out sand base 1 construction on the subgrade, lay sand base 1, then lay rainwater pipe 6 and drainage ditch 5, and then carry out The concrete layer 2 and the plate joints 21 are constructed, and finally the pavement module 31 is laid and the penetration joint 32 is constructed.

The above-mentioned pavement drainage system has the following advantages: first, the pavement drainage system is provided with seepage joints and plate joints, and rainwater infiltrates into the seepage joints and penetrates into the sand base through the plate joints. The base layer flows into the drainage ditch, and then is discharged into the rainwater pipe network system through the rainwater pipe. When the amount of rainwater exceeds the infiltration capacity of seepage joints and plate joints, the excess rainwater will flow directly through the drainage channel into the drainage ditch after runoff from the road surface, and then be discharged into the rainwater pipe network system through the drainage ditch. The pavement drainage system has the functions of infiltrating, storing and purifying rainwater. Second, the seepage joints of the pavement drainage system are filled with coarse sand, and the plate joints are filled with graded sand and gravel. The particle size of the graded sand and gravel increases sequentially from the seepage joints from the sand base to prevent coarse sand in the seepage joints. The rainwater flows into the gaps in the sand base. Third, the four sides of the bottom surface of the pavement module of the pavement drainage system are oblique cut surfaces, which form a permeable joint with a figure-eight cross-section, which can increase the cross-section of the permeable joint and make the permeable joint more permeable. Fourth, the pavement drainage system uses common building materials, which is convenient for construction and maintenance and low in cost.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A pavement drainage system, characterized in that, the pavement drainage system comprises a sand base and a concrete layer and a road slab layer laminated on the sand base; The pavement block layer includes a plurality of pavement modules laid on the concrete layer, seepage joints are provided between two adjacent pavement modules, and the concrete layer is provided with a plate seam that communicates with the sand base , the seepage seam is connected to the plate seam; The pavement drainage system also includes a rainwater pipe located at the edge of the road, the rainwater pipe is at least partially connected to the sand base, the rainwater enters the plate seam through the seepage joint and then enters the sand base, at least part of the rainwater Enter the rainwater pipe along the sand base, and discharge from the rainwater pipe. 2. The pavement drainage system according to claim 1, characterized in that, the pavement drainage system further comprises at least two curbstones located at the edge of the road, the height of the curbstones is not higher than the height of the pavement block layer A drainage channel is formed between two adjacent curbstones. 3. The pavement drainage system according to claim 1, characterized in that, the pavement drainage system also includes a drainage ditch between the sand base and the rainwater pipe, and the drainage ditch is connected to the sand base and the rainwater pipe. The rainwater pipes are all connected. 4. The pavement drainage system according to claim 3, characterized in that, when the sand base extends to the edge of the road, it protrudes downward to form a convex portion, and the bottom of the drainage ditch extends to the convex portion. 5. The pavement drainage system according to claim 3, wherein the drainage ditch is in communication with the drainage channel. 6. The pavement drainage system according to claim 1, characterized in that, the four sides of the bottom surface of the pavement module are oblique cut surfaces. 7. The pavement drainage system according to claim 1, wherein the pavement module comprises at least one of stone and prefabricated bricks. 8 . The pavement drainage system according to claim 1 , wherein the seepage joints are filled with coarse sand, and the particle size of the coarse sand is ≥ 2 mm. 9 . The pavement drainage system according to claim 1 , wherein the cracks of the plates are filled with graded gravel, and the particle size of the graded gravel is 2 mm to 15 mm. 10 . 10. The pavement drainage system according to claim 9, characterized in that, the particle size of the graded gravel at the junction between the plate seam and the sand base is greater than that of the graded sand at the junction between the plate seam and the permeable seam. particle size.