CN216404951U

CN216404951U - Ice-condensation-inhibiting asphalt pavement structure for expressway in cold region

Info

Publication number: CN216404951U
Application number: CN202120764244.2U
Authority: CN
Inventors: 柴海峰; 马超; 彭宇; 马阳冉; 崔小娜; 刘晓青; 蔡建辉
Original assignee: Hebei Reach Traffic Engineering Consulting Co ltd
Current assignee: Hebei Reach Traffic Engineering Consulting Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-04-29
Anticipated expiration: 2031-04-14

Abstract

The utility model relates to a cold region highway's ice-condensation inhibiting bituminous pavement structure relates to the field of road structure technique, and it is provided with the drainage blanket including ice-condensation inhibiting layer, ice-condensation inhibiting layer below, and the drainage blanket below is provided with the foundation layer, and the drainage blanket is by the middle part to both sides downward sloping gradually, and ice-condensation inhibiting layer's bottom surface and drainage blanket top surface butt, ice-condensation inhibiting layer top surface are the plane. This application has the anti-freezing effect that improves the road surface.

Description

Ice-condensation-inhibiting asphalt pavement structure for expressway in cold region

Technical Field

The application relates to the field of road structure technology, in particular to a congealing-ice-inhibiting asphalt pavement structure of a highway in a cold region.

Background

In most areas in the north of China, the problem of snow accumulation and icing on the road surface is common. Particularly in early winter and early spring, the accumulated snow on the road surface is easy to form thin ice on the road surface under the action of temperature change and vehicle load, and the traffic safety of the road is influenced.

Along with the progress and development of science and technology, the problem that the road surface is easy to freeze is solved, the traditional salt spreading and snow melting method is gradually abandoned, a new anti-freezing material is developed, an anti-freezing layer is paved on the surface layer of the road surface, the anti-freezing layer inhibits the road surface from frosting or freezing too early in cold winter, especially in rainy and snowy weather, snow is made to melt into water and then seep down, automobile tire skidding caused by snow and freezing of the road surface is prevented, and the driving safety of the drainage asphalt road surface is ensured.

In view of the above-mentioned related technologies, the inventor believes that the accumulated ice may accumulate in the pavement structure and freeze after the snow is melted into water and seeps down through the anti-freezing ice layer, and if the snowfall amount is too large, but the amount of water borne in the pavement structure is limited, the accumulated water may overflow upwards to affect the anti-freezing performance of the anti-freezing ice layer.

SUMMERY OF THE UTILITY MODEL

In order to improve the anti-freezing property on road surface, the application provides a cold region highway's the bituminous pavement structure that congeals of restraining.

The application provides a pair of cold region highway's that suppresses icing bituminous pavement structure adopts following technical scheme:

the utility model provides a cold area highway's icy asphalt pavement structure that suppresses, is provided with the drainage blanket including the layer of congealing that suppresses, the layer of congealing below, and the drainage blanket below is provided with the foundation layer, and the drainage blanket is by the middle part to both sides downward sloping gradually, and the bottom surface and the drainage blanket top surface butt of the layer of congealing that suppresses, and the layer of congealing top surface is the plane.

Through adopting above-mentioned technical scheme, during sleet weather, sleet falls on the ice layer that congeals that restraines, it freezes to restrain the rainwater on the ice layer that congeals, make the rainwater infiltration downwards, the rainwater permeates back on to the drainage blanket, because the incline direction on drainage blanket surface, make the rainwater discharge to both sides along the drainage blanket surface, reduce the rainwater and store up in pavement structure inside, freeze, reduce ponding and store up the too much upwards infiltration to the ice layer that congeals that restraines that influences on the ice layer that congeals, be favorable to improving the anti-freezing nature on road surface.

Optionally, be provided with the permeable bed between the ice layer of congealing of inhibiting and the drainage blanket, the permeable bed bottom surface extends along the drainage blanket top surface, and the permeable bed top surface is the plane, and ice layer fixed connection in permeable bed top surface of congealing of inhibiting.

Through adopting above-mentioned technical scheme, because reasons such as cost, the thin that the ice formation generally set up of inhibiting for drainage layer surface ponding is too much, ponding can upwards permeate to the ice formation surface of inhibiting, influences the performance of the ice formation of inhibiting, and after setting up the permeable bed, the permeable bed is equivalent to and plays the isolation between drainage layer and the ice formation of inhibiting, prevents the ponding on drainage layer surface and the direct contact of the ice formation of inhibiting, reduces the influence of ponding to the ice formation of inhibiting.

Optionally, the minimum thickness of the water permeable layer is 2-3 cm.

By adopting the technical scheme, the drainage layer is in a shape with a sharp middle part, so that the position, corresponding to the tip of the drainage layer, of the permeable layer matched with the drainage layer is thinner, the minimum thickness of the permeable layer is 2-3cm, and the probability that water flows seep out of the surface of the drainage layer and penetrates through the permeable layer when the surface of the drainage layer is excessively accumulated water can be reduced; in addition, the sharp portion of drainage blanket point is great relatively to the pressure on permeable bed, causes the permeable bed to damage easily, guarantees the thickness of the thinnest department of permeable bed, can strengthen the intensity on permeable bed, increase of service life.

Optionally, it includes the ice structure layer of congealing, the coating of congealing to restrain the ice layer to congeal to restrain, and the drainage blanket one side is kept away from in the ice structure layer of congealing to congeal ice coating fixed connection that congeals of restraining.

By adopting the technical scheme, the condensation inhibiting coating and the condensation inhibiting structural layer jointly act to inhibit the freezing of rain and snow, and the condensation inhibiting effect of the road surface is improved; with the lapse of time, the effect of inhibiting the ice that congeals on the layer of inhibiting the ice can weaken, during later maintenance, on the basis of former road surface the coating of inhibiting the ice coating can for the maintenance on road surface is more simple and convenient.

Optionally, the thickness of the ice-condensation-inhibiting structure layer is 0.8-1.2 cm.

Through adopting above-mentioned technical scheme, the contact of the layer of congealing ice and rainwater bigger degree can be guaranteed to the layer of congealing ice that restraines of this thickness structural layer in vertical direction, can not cause the road surface cost too high because of the layer upon layer back of the structure of congealing ice that restraines again.

Optionally, a waterproof bonding layer is arranged between the drainage layer and the base layer.

By adopting the technical scheme, the base layer is the final stressed part of the whole pavement and is the base stone of the pavement, the strength of the base layer determines the strength of the whole pavement, accumulated water possibly permeates downwards to the lower part of the drainage layer along with the lapse of time, and at the moment, the waterproof bonding layer intercepts the accumulated water, so that the damage effect of the accumulated water on the upper base layer is reduced, and the whole strength of the pavement is ensured; in addition, waterproof adhesive linkage can also strengthen the joint strength between foundation layer and the drainage blanket.

Optionally, the water permeable layer has a porosity of 20-23%.

Through adopting above-mentioned technical scheme, the permeable bed not only need keep apart and congeal ice blanket and drainage blanket, and the permeable bed still need have certain water permeability to make the rainwater infiltrate down to the drainage blanket, and 20-23% porosity can satisfy the water permeability requirement, can not weaken the intensity of permeable bed because of the porosity is too big again.

Optionally, the permeable layer is provided with permeable holes.

Through adopting above-mentioned technical scheme, when the rainfall was too big, the rainwater can follow the hole of permeating water and pass through, increaseed permeable bed's drainage efficiency, reduces ponding and deposits in permeable bed and permeable bed top to it is too much to reduce drainage layer surface ponding, causes the excessive probability of ponding.

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

1. the drainage layer is matched with the condensation inhibiting layer, so that the water in the pavement structure is guided to be drained while the pavement is inhibited from being frozen, and the condensation resistance of the pavement is improved;

2. the water permeable layer is arranged, so that the anti-freezing property of the pavement is improved, and the overall strength of the pavement is ensured;

3. through setting up the adhesive linkage, strengthen the connectivity between drainage blanket and the basic unit.

Drawings

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

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic view of a water permeable layer structure.

Description of reference numerals: 1. a base layer; 11. a lower base layer; 12. an upper base layer; 2. a waterproof adhesive layer; 3. a drainage layer; 4. a water permeable layer; 41. water permeable holes; 5. a condensation-inhibiting ice layer; 51. a condensation ice inhibiting structure layer; 52. and (4) an ice condensation inhibiting coating.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses frozen-ice-restraining asphalt pavement structure of expressway in cold region. Referring to fig. 1 and 2, a cold area highway's ice-condensation inhibiting asphalt pavement structure includes basic unit 1 by supreme down in proper order, waterproof adhesive layer 2, drainage blanket 3, permeable stratum 4, the ice layer 5 that congeals, rain and snow etc. fall on the ice layer 5 that congeals, the ice layer 5 that congeals suppresses freezes, it freezes to congeal ice layer 5 and suppress rain and snow etc. on rainwater infiltration passes the ice layer 5 that congeals and reaches drainage blanket 3 with permeable stratum 4, drainage blanket 3 discharges the rainwater to the road surface both sides, reduce the rainwater and store up in the inside of road surface structure, thereby reduce the influence of storing up the rainwater and the ice layer 5 that congeals, improve the ice effect that congeals.

Referring to fig. 1 and 2, it includes the ice structure layer 51 of inhibiting to congeal to restrain the ice layer 5, the coating 52 of inhibiting to congeal, it is 4 to restrain congeal structure layer 51 fixed connection in the permeable layer, it is 4 upper surfaces to restrain congeal structure layer 51 fixed connection in the permeable layer, it is the porous self-snow-melting bituminous mixture of material for participating in snow melt to restrain the ice structure layer 51 of inhibiting to congeal the thickness of structure layer 51 and be 0.8-1.2cm, the thickness of the ice structure layer 51 of inhibiting to congeal promptly can be 0.8cm, also can be 1.2cm, 1.5cm etc., it is the hydrophobic type coating of inhibiting to congeal ice coating 52, the coating is on the ice structure layer 51 upper surface of inhibiting to congeal. The condensation-inhibiting ice coating 52 and the condensation-inhibiting structure layer 51 jointly act to inhibit rain and snow from icing, so that the condensation-inhibiting effect of the road surface is improved; in the later maintenance process of the pavement, the anti-icing coating 52 is coated on the original pavement, so that the later maintenance work is simple and quick.

Referring to fig. 1 and 3, the permeable layer 4 is made of asphalt, the porosity of the permeable layer 4 made of asphalt is 20-23%, that is, the porosity of the permeable layer 4 can be 20%, or 21%, 23%, etc., permeable holes 41 are uniformly formed in the permeable layer 4, and the permeable holes 41 vertically penetrate through the permeable layer 4. Under the action of the condensation inhibiting ice layer 5, unfrozen rainwater downwards permeates, and penetrates through the water permeable layer 4 to reach the drainage layer 3 in the rainwater downwards permeating process, so that the water permeable layer 4 plays a role in isolating the drainage layer 3 from the condensation inhibiting ice structure layer 51, accumulated water on the surface of the drainage layer 3 is prevented from directly contacting the condensation inhibiting ice layer 5, and the influence of the accumulated water on the condensation inhibiting ice structure layer 51 is reduced; the void ratio of permeable bed 4 guarantees that the rainwater can pass permeable bed 4 infiltration downwards smoothly, and when the water yield was too big, permeable hole 41 can strengthen permeable bed 4's drainage efficiency, reduces ponding and stores up in permeable bed 4 and permeable bed 4 top to reduce ponding and the influence of inhibiting ice structural layer 51, be favorable to improving and inhibit the ice effect.

Referring to fig. 1 and 2, along highway width direction, drainage blanket 3 is along the direction by middle part to both sides, the downward sloping gradually, the hardened surface that the drainage blanket 3 surface was laid for the cement stone material and is formed, permeable stratum 4 fixed connection is in drainage blanket 3 top, permeable stratum 4 bottom surface is the shape with the laminating of drainage blanket 3 top surface, permeable stratum 4 top surface is the plane, the thickness of permeable stratum 4 middle part position, the thickness of the thinnest position of permeable stratum 4 is the minimum thickness of permeable stratum 4 promptly, the minimum thickness of permeable stratum 4 is 2-3cm, the minimum thickness of permeable stratum 4 promptly can be 2cm, also can be 2.5cm, 3cm etc.

Referring to fig. 1 and 2, rainwater passes through the permeable layer 4 and then reaches the drainage layer 3, and the drainage layer 3 is inclined towards the top surfaces of two sides, so that accumulated water on the drainage layer 3 can be drained towards two sides of a highway along the drainage layer 3 in a forest, and the probability of accumulated water on the drainage layer 3 is reduced; because drainage blanket 3 is the sharp-pointed shape in middle part, make like this with drainage blanket 3 complex permeable layer 4 thinner with the position thickness that drainage blanket 3 pointed end corresponds, so guarantee the thickness of this thinner position, guarantee to form certain high back when the accumulation of 3 surperficial water yield on drainage blanket, rivers can not follow 3 surperficial oozing of drainage blanket passes permeable layer 4.

Referring to fig. 1 and 2, the foundation layer 1 includes a lower base layer 11 and an upper base layer 12, the upper base layer 12 is fixedly connected above the lower base layer 11, the upper base layer 12 is a semi-rigid base layer with a compact skeleton, the lower base layer 11 is a semi-rigid stabilized aggregate structure and is paved by semi-rigid stabilized aggregates, and the waterproof bonding layer 2 is fixedly connected between the upper base layer 12 and the drainage layer 3 according to the existing technical specification of highway asphalt pavement construction. The upper base layer 12 and the lower base layer 11 are matched to play a main supporting role, so that the strength of the whole structure of the pavement is ensured; waterproof bonding layer 2 strengthens the connectivity between upper base layer 12 and the drainage blanket 3 on the one hand, and on the other hand, along with the lapse of time, probably there is ponding infiltration to drainage blanket 3 below, and at this moment, waterproof bonding layer 2 plays certain waterproof effect, blocks ponding and upper base layer 12 contact, reduces the damage effect of ponding to upper base layer 12 production, guarantees road surface bulk strength.

Referring to fig. 1 and 2, the implementation principle of the ice-suppressing asphalt pavement structure of the expressway in the cold region according to the embodiment of the present application is as follows: in rainy and snowy weather, the rain and snow fall onto the road surface, the condensation point can be lowered by the condensation inhibiting coating 52 and the condensation inhibiting structure layer 51, icing is inhibited, then rainwater downwards permeates through the water permeable layer 4 to reach the drainage layer 3, accumulated water on the drainage layer 3 is discharged to the two sides of the road along the inclined plane of the drainage layer 3, the probability of accumulated water accumulating and freezing in the road surface structure is reduced, and therefore the influence of excessive accumulated water on the condensation inhibiting ice layer 5 is reduced; the condensation-inhibiting ice layer 5 inhibits rain and snow from freezing, the drainage layer 3 guides accumulated water to be drained, the two layers supplement each other and act together, the condensation-inhibiting effect of the road surface is improved, the probability of freezing the road surface is reduced, and the driving safety is improved.

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: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a cold area highway's frozen asphalt pavement structure that suppresses, its characterized in that: including inhibiting ice layer (5) that congeals, it is provided with drainage blanket (3) to inhibit to congeal ice layer (5) below, and drainage blanket (3) below is provided with basic unit (1), and drainage blanket (3) are by middle part to both sides downward sloping gradually, and the bottom surface and the drainage blanket (3) top surface butt of inhibiting ice layer (5) that congeals, and it is the plane to inhibit to congeal ice layer (5) top surface.

2. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 1, wherein: it is provided with permeable bed (4) to suppress between ice layer (5) and drainage blanket (3), and permeable bed (4) bottom surface extends along drainage blanket (3) top surface, and permeable bed (4) top surface is the plane, and it is in permeable bed (4) top surface to suppress ice layer (5) fixed connection.

3. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 2, wherein: the minimum thickness of the permeable layer (4) is 2-3 cm.

4. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 1, wherein: the anti-icing layer (5) comprises an anti-icing structure layer (51) and an anti-icing coating (52), and the anti-icing coating (52) is fixedly connected to one side, far away from the drainage layer (3), of the anti-icing structure layer (51).

5. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 4, wherein: the thickness of the ice-condensation-inhibiting structure layer (51) is 0.8-1.2 cm.

6. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 1, wherein: and a waterproof bonding layer is arranged between the drainage layer (3) and the base layer (1).

7. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 2, wherein: the porosity of the water permeable layer (4) is 20-23%.

8. The ice-suppressing asphalt pavement structure for the expressway in the cold region according to claim 2, wherein: and the permeable layer (4) is provided with permeable holes (41).