CN113818305B

CN113818305B - Road structure and construction method thereof

Info

Publication number: CN113818305B
Application number: CN202111064809.7A
Authority: CN
Inventors: 张孙胜; 黄琴; 沈德龙; 杨淑芬
Original assignee: Deqing Yisheng Construction Co ltd
Current assignee: Deqing Yisheng Construction Co ltd
Priority date: 2021-09-11
Filing date: 2021-09-11
Publication date: 2022-10-21
Anticipated expiration: 2041-09-11
Also published as: CN113818305A

Abstract

The application discloses road structure and construction method thereof, road structure is including laying the road body between two greenbelts, the road body is including laying the permeable bed on the road bed, laying the buffer layer on the permeable bed, laying the back up coat on the buffer layer and laying the road surface layer on the back up coat, the permeable bed is laid by the rubble and is formed, a plurality of groups of check pieces that prevent the rubble towards the motion of road both sides have been laid along road body length direction in the permeable bed, set up the wash port that makes the groundwater that gets into between the rubble flow along road body width direction on the check piece. This application has the effect that reduces groundwater to the road surface structure corruption.

Description

Road structure and construction method thereof

Technical Field

The invention relates to the field of road construction, in particular to a road structure and a construction method thereof.

Background

Criss-cross roads and developed transportation are important foundations of national economic high-speed development. The road not only requires wide coverage area, but also has strict requirements on road quality and structure. The pavement structure layer is each laid layer which is laid on a roadbed and forms a pavement, and mainly comprises a surface layer, a base layer and a subbase layer according to the position and the action of the pavement structure layer. The latest 'design code for asphalt pavement for roads' indicates that a pavement structure layer consists of three parts: surface course, basic unit and subbase. The previous underlayment can be classified as a functional layer or a subgrade treatment layer.

In the related technology, the road structure is mainly characterized in that firstly, a roadbed is tamped, then a reinforcement cage is built on the tamped roadbed, and concrete is poured on the reinforcement cage to obtain a required road surface; or paving asphalt on the compacted road bed so as to obtain the required road surface.

In the process of implementing the application, the inventor finds that at least the following problems exist in the technology, much underground water is often present in the roadbed, and the underground water rises and acts on concrete or the asphalt to easily cause corrosion and damage to the pavement structure.

Disclosure of Invention

In order to reduce corrosion of underground water to a road structure, the application provides a road structure and a construction method thereof.

In a first aspect, the present application provides a road structure that adopts the following technical solution:

the road structure comprises a road body laid between two green belts, wherein the road body comprises a permeable layer laid on a roadbed, a buffer layer laid on the permeable layer, a reinforcing layer laid on the buffer layer and a pavement layer laid on the reinforcing layer, the permeable layer is formed by paving broken stones, a plurality of groups of grid blocking pieces for preventing the broken stones from moving towards the two sides of a road are laid in the permeable layer along the length direction of the road body, and drain holes for enabling underground water entering between the broken stones to flow along the width direction of the road body are formed in the grid blocking pieces.

By adopting the technical scheme, the underground water permeates into the upper permeable layer from the roadbed, enters the gap between the gravels and diffuses towards the periphery, and is discharged to the two sides of the road through the drainage holes in the process of diffusing around, so that the possibility of damage to the road body caused by upward permeation of the underground water is reduced.

Optionally, the lattice blocking pieces are formed by splicing a plurality of bricks end to end, the drain holes penetrate through the bricks along the width direction of the road body, a plurality of water guide pipes are laid in the water permeable layer along the width direction of the road body, the water guide pipes are connected with the bricks on two adjacent lattice blocking pieces, two ends of each water guide pipe are connected with the corresponding drain holes, and the water guide pipes are opposite to the side wall of the buffer layer and are provided with drain holes which penetrate through the side wall and enable underground water to enter the water guide pipes.

By adopting the technical scheme, the grid blocking piece is formed by splicing a plurality of bricks end to end, so that the installation of the grid blocking piece is convenient, underground water enters the permeable layer, enters the water guide pipe from the underground water hole and flows away towards the two sides of the road surface along the water guide pipe.

Optionally, a water inlet parallel to the drain hole is formed in the side wall of the brick close to the center line of the road body, the water inlet is located above the drain hole, and a communication channel which is vertically arranged and enables the water inlet to be communicated with the drain hole is formed in the brick.

By adopting the technical scheme, the groundwater permeates into the permeable layer, part of the groundwater enters the water guide pipe from the groundwater hole and is discharged from two ends of the water guide pipe, and when the groundwater permeates more, part of the groundwater can enter the drainage hole, enters the water guide pipe along the drainage hole and then flows out from two ends of the water guide pipe.

Optionally, the lower surface of the brick is provided with water seepage holes along the height direction, the brick is internally provided with an auxiliary channel for communicating the water seepage holes with the communication channel, and the auxiliary channel is located between the water inlet hole and the drain hole in the vertical direction.

Through adopting above-mentioned technical scheme, groundwater upwards permeates the in-process can promote the fragment of brick upward movement, and the setting in hole of permeating water for make groundwater enter into the infiltration hole, and the flow passes through auxiliary passage and intercommunication passageway entering aqueduct, and discharges from the aqueduct tip, reduces groundwater and promotes the fragment of brick upward movement and leads to the possibility of road surface damage.

Optionally, lay the ditch that is used for collecting the rainwater in the afforestation way, the ditch extends and sets up the end cover that can open at length direction's both ends along greenbelt length direction, the ditch up end is fixed with a plurality of laps with ditch upper end opening closure, set up a plurality of water-collecting hole that run through terminal surface about the apron on the apron, the afforestation way is close to the lateral wall of road and offers the rainwater flow direction apron on making the road and enters into the hole of stepping down in the ditch.

Through adopting above-mentioned technical scheme, rainy day, the rainwater falls on the road surface to towards both sides flow direction greenbelt, the rainwater flows through the hole of stepping down and the water collection hole, enters into the ditch and collects, so that the concentrated use in later stage.

Optionally, install a plurality of water pumps on the greenbelt, be connected with on the water pump and stretch into in the ditch and be used for the drinking-water pipe that draws water and make water exhaust blow-off pipe, be connected with the drain pipe on the blow-off pipe, the drain pipe sets up and a plurality of drain pipe end to end along greenbelt length direction, be connected with a plurality of cooling shower nozzles that carry out the water spray to the road surface on the drain pipe.

Through adopting above-mentioned technical scheme, the staff can act on the water pump, makes the water pump take out the water in the ditch, and water is followed the cooling shower nozzle blowout, sprinkles to the road surface to reach the purpose of cooling.

Optionally, the green belt is provided with a watering pipe parallel to the drain pipe, the drain pipe is provided with a plurality of communicating pipes connected with the watering pipe, the communicating pipes are provided with valves for controlling the communicating pipes to be opened, and the watering pipe is connected with a plurality of atomizing nozzles for spraying water to the green.

Through adopting above-mentioned technical scheme, the water pump is taken water out from the ditch, and partly water from the cooling shower nozzle blowout, use on the road surface, cool down the processing to the road surface, partly water from the atomizer blowout, act on green planting, water green planting.

Optionally, the anti-freezing pipe that is on a parallel with the canal is laid to the below ground of greenbelt, anti-freezing pipe highly is less than the height of canal bottom in vertical side, be provided with the water pipe of the anti-freezing pipe of a plurality of intercommunications on the canal, install the baffle that is used for controlling the opening and closing of water pipe port in the canal, be connected with on the water pump and stretch into the water supply pipe in the anti-freezing pipe, all be provided with the valve on water supply pipe and the drinking-water pipe, install the install box that is used for storing industry salt on the greenbelt, be provided with the lower salt pipe of intercommunication water pipe on the install box, be connected with on the water supply pipe and make salt enter into the material loading subassembly in the water pipe.

Through adopting above-mentioned technical scheme, in order to prevent the icy road, make the rivers in the ditch to prevent frostbite the pipe to make industry salt add and form the brine in preventing frostbite, close the valve on drinking-water pipe and communicating pipe, and will let the hole block up, under the effect of water pump, make the brine in preventing frostbite the pipe spray on the road surface, reduce the possibility of icy road.

Optionally, the cross section of the lower salt pipe is a rectangular frame, the feeding assembly comprises an upper salt roller which is rotatably connected to the inner wall of the water pipe and rotates under the action of water flow, an arc-shaped surface with the axis of the upper salt roller as an axis is formed in the inner wall of the lower end of the lower salt pipe, the upper salt roller is abutted to the arc-shaped surface and used for sealing the lower end opening of the lower salt pipe, a plurality of upper salt holes used for containing salt are formed in the outer wall of the upper salt roller, and the upper salt roller is partially positioned in the water pipe and pushes the upper salt roller to rotate under the action of water flow.

Through adopting above-mentioned technical scheme, water flows to anti-freezing pipe from the ditch, and at the in-process that flows to anti-freezing pipe, promotes the salt roller and rotates, and the in-process of salt roller pivoted sends into the salt in the water pipe to enter into in the anti-freezing pipe, thereby accomplish the process of adding salt.

In a second aspect, the present application provides a method for constructing a road structure, which adopts the following technical scheme, including the following steps:

s1, compacting a roadbed, paving bricks on the roadbed, enabling the bricks to extend along the length direction of a road body to form a plurality of grid blocking pieces, connecting water guide pipes to the corresponding bricks, and paving broken stones between two adjacent grid blocking pieces to form a permeable layer;

s2, paving a buffer layer, a reinforcing layer and a pavement layer on the permeable layer in sequence;

s3, constructing green belts on two sides of the road body along the length direction, installing the water channel, the anti-freezing pipe and the installation box in the green belts, enabling the water passing pipe to be connected with the water channel and the anti-freezing pipe, and connecting the lower salt pipe to the water passing pipe to enable the upper salt roller to abut against a lower end port of the lower salt pipe;

s4, installing a water pump in the green belt, so that a water pumping pipe is connected into the water channel, and a water delivery pipe is connected with an anti-freezing pipe;

and S5, installing a drain pipe connected with a watering pipe in the green belt, aligning a cooling spray head to the road surface, aligning an atomizing spray head to the green plants, and connecting a drain pipe to a water pump.

By adopting the technical scheme, the underground water permeates into the permeable layer, flows away towards the two sides of the road under the action of the broken stones and the bricks, and reduces the possibility that the underground water corrodes the road body; in rainy days, rainwater enters the canal along the road surface and is stored in the canal so as to be conveniently and intensively utilized in the later period.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the underground water permeates into the permeable layer and diffuses around the gravel, and is discharged to the two sides of the road body through the water guide pipes in the diffusion process, so that the possibility of damage to the road body caused by upward permeation of the underground water is reduced;

2. the water pump can be sprayed the water in the ditch on the road surface, cools down the road surface, can water green planting in the greenbelt simultaneously.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of a block according to an embodiment of the present application.

Fig. 3 is a schematic structural view for showing the connection relationship between the cooling spray head and the atomizing spray head.

Fig. 4 is a schematic view for showing the structure of the feeding assembly.

Description of the reference numerals:

1. a water permeable layer; 2. a buffer layer; 3. a reinforcement layer; 4. a pavement layer; 5. bricks; 6. a drain hole; 7. a water conduit; 8. a drain hole; 9. a water inlet hole; 10. a communication channel; 11. a water seepage hole; 12. an auxiliary channel; 13. a ditch; 14. a cover plate; 15. a water collection hole; 16. a hole of abdication; 17. anti-freezing pipe; 18. a water pipe; 19. a driving cylinder; 20. a baffle plate; 21. installing a box; 22. a salt discharging pipe; 23. a salt feeding roller; 24. an arc-shaped surface; 25. salt feeding holes; 26. a water pump; 27. a water feeding pipe; 28. a water pumping pipe; 29. a water supply pipe; 30. a waterproof pipe; 31. a drain pipe; 32. a cooling spray head; 33. watering pipes; 34. an atomizing spray head; 35. a communicating pipe; 36. a waterproof tube.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a road structure. Referring to fig. 1, including laying the road body between two greenbelts, the road body is including laying permeable bed 1 at the road bed upper surface, has laid the buffer layer 2 that plays the cushioning effect at permeable bed 1 upper surface, lays the back up coat 3 that is used for consolidating the road body at buffer layer 2 upper surface, has laid road surface layer 4 at back up coat 3 upper surface. The buffer layer 2 is made of wear-resistant rubber pads, the reinforcing layer 3 is formed by pouring reinforced concrete, and the pavement layer 4 is formed by paving asphalt.

Referring to fig. 1 and 2, permeable stratum 1 is laid by the rubble and is formed, has laid a plurality of groups check piece along road body length direction in the permeable stratum 1, and check keep off a symmetrical both sides that set up at road body central line, and check keep off the piece and be used for preventing the rubble to lead to the road body to warp towards the motion of road both sides. The grid blocking piece is formed by splicing a plurality of cement bricks 5 end to end, and the upper surface of the grid blocking piece is flush with the upper surface of the water permeable layer 1.

Referring to fig. 1 and 2, the side wall of the brick 5 is provided with a drain hole 6 penetrating through the brick 5 along the width direction of the road body, a plurality of water conduits 7 are laid in the permeable layer 1 along the width direction of the road body, the water conduits 7 are connected with the corresponding bricks 5 on the adjacent two sets of lattice stoppers, and two ends of the water conduits 7 are communicated with the corresponding drain holes 6. The water guide pipe 7 is opposite to the side wall of the buffer layer 2 and is provided with a water drainage hole 8 penetrating through the side wall along the vertical direction. The underground water which permeates into the crushed stones enters the water guide pipe 7 from the water drainage hole 8 and is discharged from two ends of the water guide pipe 7 after flowing through the water drainage holes 6, so that the possibility that the ground water permeates upwards to corrode the road surface is reduced.

Referring to fig. 1 and 2, a water inlet 9 is formed in the side wall, close to the center line of the road body, of the brick 5, the water inlet 9 is parallel to the water drain hole 6, the water inlet 9 is located above the water drain hole 6, a communication channel 10 is formed in the brick 5 in the vertical direction, and the communication channel 10 is communicated with the water drain hole 6 and the water inlet 9. Part of the underground water can enter the brick 5 from the position of the water inlet 9, flows through the communication channel 10, enters the water discharge hole 6 and is discharged from two ends along the water guide pipe 7. The lower surface of the brick 5 is provided with a water seepage hole 11 along the height direction, an auxiliary channel 12 for communicating the water seepage hole 11 with the communication channel 10 is arranged in the brick 5, and the height of the auxiliary channel 12 in the vertical direction is positioned between the water inlet hole 9 and the water drainage hole 6. Part of the underground water enters the auxiliary channel 12 from the water seepage holes 11 and flows through the communication channel 10 to enter the water guide pipe 7 and is discharged from the two ends of the water guide pipe 7, so that the possibility that the underground water pushes the bricks 5 to move upwards due to upward seepage to cause damage to the road body is reduced.

Referring to fig. 1 and 3, a water channel 13 for collecting rainwater is laid in the green road, and the water channel 13 extends along the length direction of the green belt. Openable end covers are arranged at two ends of the water channel 13, and when the water level in the water channel 13 is too high, the openable end covers can be opened to enable water to flow to a river channel, so that the possibility that the water in the water channel 13 flows to a road surface to cause the road surface to be flooded is reduced. A plurality of cover plates 14 are fixed on the upper end face of the water channel 13, the cover plates 14 are spliced end to close the upper end opening of the water channel 13, a plurality of water collecting holes 15 are formed in the cover plates 14, and the water collecting holes 15 penetrate through the upper end face and the lower end face of the cover plates 14 and enable rainwater to flow to the water channel 13 from the water collecting holes 15. The side wall of the green road close to the road body is provided with a yielding hole 16, and the yielding hole 16 penetrates through the side wall to enable rainwater on the road to flow to the cover plate 14 and enter the water channel 13 from the water collecting hole 15.

Referring to fig. 1 and 3, the green belt is provided with an anti-freezing pipe 17, the anti-freezing pipe 17 is parallel to the canal 13 and is positioned on one side of the canal 13 far away from the road body, the highest position of the anti-freezing pipe 17 is lower than the bottom of the canal 13, and the canal 13 is provided with a plurality of water passing pipes 18 communicated with the anti-freezing pipe 17. A baffle plate 20 for controlling the opening or closing of the port of the water passing pipe 18 is slidably arranged in the water channel 13, a driving cylinder 19 is fixed on the inner wall of the water channel 13 through a bolt, the end part of a piston rod of the driving cylinder 19 is fixed on the side wall of the baffle plate 20, and acts on the baffle plate 20 to enable the baffle plate 20 to control the opening or closing of the port of the water passing pipe 18. Install the install bin 21 that is used for storing industry salt on the greenbelt, install bin 21 is located between ditch 13 and the anti-freezing pipe 17, and install bin 21 diapire is connected with the lower salt pipe 22 that is vertical setting, and lower salt pipe 22 cross section is rectangular frame and lower salt pipe 22 lower extreme and water pipe 18 intercommunication down.

Referring to fig. 3 and 4, a feed assembly for feeding salt into the conduit 18 is connected to the conduit 18. The material loading subassembly is including rotating the last salt roller 23 who connects at water pipe 18 inner wall, goes up salt roller 23 and is the horizontal setting, and the water in the ditch 13 is to anti-freezing pipe 17, promotes salt roller 23 and rotates. The inner wall of the lower end of the lower salt pipe 22 is provided with an arc-shaped surface 24 taking the axis of the upper salt roller 23 as an axis, the upper salt roller 23 abuts against the arc-shaped surface 24 and is used for sealing the opening of the lower end of the lower salt pipe 22, the outer wall of the upper salt roller 23 is provided with an upper salt hole 25, salt enters the upper salt hole 25, when water in the water channel 13 flows to the anti-freezing pipe 17, the upper salt roller 23 rotates to throw the salt into the water passing pipe 18, and the salt enters the anti-freezing pipe 17 along the water passing pipe 18. The opening of the upper salt hole 25 is smaller than the width of the arc-shaped surface 24, so that the salt is prevented from entering the water passing pipe 18 from the gap between the upper salt hole 25 and the arc-shaped surface 24 when the water flow stops.

Referring to fig. 3 and 4, a plurality of water pumps 26 are installed on the green belt, the water inlet ends of the water pumps 26 are connected with a water feeding pipe 27, one end of the water feeding pipe 27 is connected to the water pumps 26, the other end of the water feeding pipe 27 is connected with a water pumping pipe 28 extending into the water channel 13 and a water feeding pipe 29 extending into the anti-freezing pipe 17, and valves are arranged on the water feeding pipe 29 and the water pumping pipe 28. The water outlet end of the water pump 26 is connected with a water discharge pipe 36, the water discharge pipe 36 is connected with a water discharge pipe 31 perpendicular to the water discharge pipe 36, the water discharge pipe 31 is arranged along the length direction of the green belt, and the side wall of the water discharge pipe 31 is connected with a cooling spray head 32. The water pumping pipe 28 pumps out the water in the water channel 13 and sprays the water on the road surface to cool the road surface; the water spray pipe extracts the water and the salt water in the anti-freezing pipe 17 and sprays the water and the salt water on the road surface, so that the possibility of icing the road surface is reduced.

Referring to fig. 3 and 4, a watering pipe 33 parallel to the drain pipe 31 is provided on the green belt, and a plurality of atomizing nozzles 34 for spraying water to the green are connected to the watering pipe 33. The water outlet pipe 31 is connected with a plurality of communicating pipes 35, the communicating pipes 35 are communicated with the watering pipe 33 and the water outlet pipe 31, valves for controlling the opening or closing of the communicating pipes 35 are arranged on the communicating pipes 35, when the water pump 26 pumps the salt water in the anti-freezing pipe 17, the valves on the communicating pipes 35 are closed, and the salt water is prevented from acting on green plants to cause green death.

The implementation principle of the road structure and the construction method thereof in the embodiment of the application is as follows: the groundwater permeates into the permeable layer 1 and diffuses around between the crushed stones, and in the diffusion process, the groundwater enters the water guide pipe 7 and is discharged from two ends of the water guide pipe 7.

The embodiment of the application also discloses a construction method of the road structure, which comprises the following steps:

s1, tamping a roadbed, paving bricks 5 on the roadbed, enabling the bricks 5 to extend along the length direction of a road body, enabling drill blocks spliced end to form a plurality of lattice blocking parts, bonding two ends of a water guide pipe 7 to the corresponding bricks 5 in the process of paving the bricks 5, paving broken stones between two adjacent lattice blocking parts, and tamping the broken stones to enable the upper surface of a permeable layer 1 to be flush with the upper surfaces of the bricks 5;

s2, paving a rubber pad on the upper surface of the water permeable layer 1, bonding the rubber pad to the upper surface of the brick 5, building a reinforcing mesh on the rubber pad, pouring concrete into the reinforcing mesh to form a reinforcing layer 3, and pouring asphalt on the upper surface of the reinforcing layer 3 to form a pavement layer 4;

s3, constructing a green belt on two sides of the road body along the length direction, installing the water channel 13 and the anti-freezing pipe 17 into the green belt, connecting the water pipe 18 with the water channel 13 and the anti-freezing pipe 17, installing the installation box 21 into the green belt, connecting the lower salt pipe 22 to the water pipe 18, and enabling the upper salt roller 23 to abut against the lower end port of the lower salt pipe 22;

s4, installing a water pump 26 in a green belt through bolts, connecting an upper water pipe 27 connected with a water pumping pipe 28 and a water delivery pipe 29 to the water pump 26 through a clamp, enabling the lower end of the water pumping pipe 28 to be located in the water channel 13, and enabling the lower end of the water delivery pipe 29 to be located in the anti-freezing pipe 17;

s5, the watering pipe 33 and the water discharge pipe 31 are installed in the green belt, the communicating pipe 35 is communicated with the watering pipe 33 and the water discharge pipe 31, the cooling spray head 32 on the water discharge pipe 31 is aligned to the road surface, the atomizing spray head 34 on the watering pipe 33 is aligned to the green plants, and the water discharge pipe 36 connected with the water discharge pipe 31 is connected to the water pump 26 through a clamp.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A road structure characterized by: the road comprises a road body laid between two green belts, wherein the road body comprises a permeable layer (1) laid on a roadbed, a buffer layer (2) laid on the permeable layer (1), a reinforcing layer (3) laid on the buffer layer (2) and a road surface layer (4) laid on the reinforcing layer (3), the permeable layer (1) is formed by paving broken stones, a plurality of groups of lattice blocking pieces for preventing the broken stones from moving towards the two sides of the road are laid in the permeable layer (1) along the length direction of the road body, and drainage holes (6) for enabling underground water entering between the broken stones to flow along the width direction of the road are formed in the lattice blocking pieces; the lattice blocking pieces are formed by splicing a plurality of bricks (5) end to end, the water drainage holes (6) penetrate through the bricks (5) along the width direction of the road body, a plurality of water guide pipes (7) are laid in the permeable layer (1) along the width direction of the road body, the water guide pipes (7) are connected with the bricks (5) on two adjacent groups of lattice blocking pieces, two ends of each water guide pipe are connected with the corresponding water drainage hole (6), and a sewer hole (8) which penetrates through the side wall and enables underground water to enter the water guide pipes (7) is formed in the side wall of the water guide pipe (7) opposite to the buffer layer (2); a water inlet (9) parallel to the drain hole (6) is formed in the side wall, close to the center line of the road body, of the brick (5), the water inlet (9) is located above the drain hole (6), and a communication channel (10) which is vertically arranged and enables the water inlet (9) to be communicated with the drain hole (6) is formed in the brick (5); the brick (5) lower surface has seted up water seepage hole (11) along the direction of height, set up in brick (5) and made water seepage hole (11) and intercommunication passageway (10) auxiliary channel (12) of intercommunication, auxiliary channel (12) highly are located between inlet opening (9) and wash port (6) in vertical side.

2. A road structure as claimed in claim 1, wherein: lay ditch (13) that are used for collecting the rainwater in the afforestation way, ditch (13) extend and set up the end cover that can open at length direction's both ends along greenbelt length direction, ditch (13) up end is fixed with a plurality of apron (14) with ditch (13) upper end opening closure, set up a plurality of water collecting hole (15) that run through apron (14) upper and lower terminal surface on apron (14), afforestation way is close to the lateral wall of road and offers rainwater flow direction apron (14) on making the road and enter into the hole of stepping down (16) in ditch (13).

3. A road structure as claimed in claim 2, wherein: install a plurality of water pumps (26) on the greenbelt, be connected with on water pump (26) and stretch into in ditch (13) and be used for the drinking-water pipe (28) of drawing water and make water exhaust blow-off pipe (36), be connected with drain pipe (31) on blow-off pipe (36), drain pipe (31) set up and a plurality of drain pipe (31) end to end along greenbelt length direction, be connected with a plurality of cooling shower nozzles (32) that carry out the water spray to the road surface on drain pipe (31).

4. A road structure as claimed in claim 3, wherein: be provided with watering pipe (33) that is on a parallel with drain pipe (31) on the greenbelt, be provided with a plurality of communicating pipes (35) of connecting watering pipe (33) on drain pipe (31), install the valve that control communicating pipe (35) was opened on communicating pipe (35), be connected with a plurality of atomizer (34) that carry out the water spray to the afforestation on watering pipe (33).

5. A road structure as claimed in claim 4, wherein: anti-freezing pipe (17) that are on a parallel with ditch (13) are laid to the below ground of greenbelt, anti-freezing pipe (17) highly is less than the height of ditch (13) bottom in vertical side, be provided with water pipe (18) of a plurality of intercommunication anti-freezing pipes (17) on ditch (13), install baffle (20) that are used for controlling water pipe (18) port switching in ditch (13), be connected with on water pump (26) and stretch into water supply pipe (29) in anti-freezing pipe (17), all be provided with the valve on water supply pipe (29) and drinking-water pipe (28), install on the greenbelt and be used for storing industry salt install the install bin (21), be provided with the lower salt pipe (22) of intercommunication water pipe (18) on install bin (21), be connected with on water pipe (18) and make salt enter into the material loading subassembly in water pipe (18).

6. A road structure as claimed in claim 5, wherein: the cross section of the lower salt pipe (22) is a rectangular frame, the feeding assembly comprises an upper salt roller (23) which is rotatably connected to the inner wall of the water passing pipe (18) and rotates under the action of water flow, an arc-shaped surface (24) with the axis of the upper salt roller (23) as the shaft is arranged on the inner wall of the lower end of the lower salt pipe (22), the upper salt roller (23) is abutted to the arc-shaped surface (24) and used for sealing the lower end opening of the lower salt pipe (22), and a plurality of upper salt holes (25) used for containing salt are formed in the outer wall of the upper salt roller (23).

7. A method of constructing a road structure, as claimed in claim 6, comprising the steps of:

s1, compacting a roadbed, paving bricks (5) on the roadbed, enabling the bricks (5) to extend along the length direction of a road body to form a plurality of grid blocking parts, connecting water guide pipes (7) to the corresponding bricks (5), and paving broken stones between every two adjacent grid blocking parts to form a permeable layer (1);

s2, sequentially laying a buffer layer (2), a reinforcing layer (3) and a pavement layer (4) on the permeable layer (1);

s3, constructing green belts on two sides of the road body along the length direction, installing the water channel (13), the anti-freezing pipe (17) and the installation box (21) in the green belts, enabling the water passing pipe (18) to be connected with the water channel (13) and the anti-freezing pipe (17), connecting the lower salt pipe (22) to the water passing pipe (18), and enabling the upper salt roller (23) to abut against the lower end port of the lower salt pipe (22);

s4, a water pump (26) is installed in the green belt, a water pumping pipe (28) is connected into the water channel (13), and a water delivery pipe (29) is connected with the anti-freezing pipe (17);

s5, a water discharge pipe (31) connected with a watering pipe (33) is installed in the green belt, a cooling spray head (32) is aligned to the road surface, an atomizing spray head (34) faces green plants, and a water discharge pipe (36) is connected to a water pump (26).