CN216338806U - Cracking-proof asphalt road structure - Google Patents
Cracking-proof asphalt road structure Download PDFInfo
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- CN216338806U CN216338806U CN202122438171.0U CN202122438171U CN216338806U CN 216338806 U CN216338806 U CN 216338806U CN 202122438171 U CN202122438171 U CN 202122438171U CN 216338806 U CN216338806 U CN 216338806U
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- 239000010426 asphalt Substances 0.000 title claims description 40
- 239000010410 layer Substances 0.000 claims description 82
- 239000002344 surface layer Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000004567 concrete Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011387 rubberized asphalt concrete Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The utility model relates to a prevent bituminous road structure that ftractures relates to the field of road design technique, and it includes bed course, semi-rigid basic unit and the surface course that sets gradually by supreme down, semi-rigid basic unit sets up to the arch, semi-rigid basic unit arch wall is provided with a plurality of slots, slot perpendicular to road surface extending direction sets up, the slot intussuseption is filled with the metalling. This application has the effect of strengthening the road surface drainage, extension road life.
Description
Technical Field
The application relates to the field of road design technology, in particular to an anti-cracking asphalt road structure.
Background
The asphalt pavement is a pavement structure with a surface layer made of asphalt mixture with a certain thickness paved on a flexible base layer and a semi-rigid base layer. Compared with a gravel road surface, the strength stability of the road surface is greatly improved. Compared with cement concrete pavements, the asphalt pavement has the advantages of smooth surface without joints, small driving vibration, low noise, fast open traffic, simple and convenient maintenance, suitability for road surface construction in different periods, important structural form of the pavement in China, and cracking of the asphalt pavement in the service life, which is a common problem in all countries in the world.
An existing chinese patent with patent application number cn201720715376.x proposes an anti-crack asphalt road structure, which includes: a foundation layer laid on the ground; a self-leveling layer formed on the base layer; the cement concrete layer is laid on the self-leveling layer; the anti-cracking layer is laid on the cement concrete layer and comprises a net-shaped structure which is woven by taking the memory metal wire as warp and taking the anti-cracking metal wire as weft; an asphalt layer laid over the anti-cracking layer.
In view of the above-mentioned related technologies, the inventor believes that the pressure applied to the asphalt layer is buffered by the crack-resistant layer formed by weaving the memory metal and the crack-resistant metal wire, but the defect that the asphalt road structure is easy to accumulate water still exists, and the cracking of the asphalt road surface is accelerated under the influence of vehicle load.
SUMMERY OF THE UTILITY MODEL
In order to improve the road surface fracture problem that arouses because road ponding, the application provides a prevent bituminous road structure that ftractures.
The application provides a prevent bituminous road structure that ftractures adopts following technical scheme:
the utility model provides a prevent bituminous road structure that ftractures, includes bed course, semi-rigid basic unit and the surface course that sets gradually by supreme down, semi-rigid basic unit sets up to the arch, semi-rigid basic unit arch wall is provided with a plurality of slots, slot perpendicular to road surface extending direction sets up, the slot intussuseption is filled with the metalling.
By adopting the technical scheme, the arched semi-rigid base layer has higher bearing capacity, and the semi-rigid base layer is prevented from cracking due to overlarge vehicle load; the gravel layer filled in the groove plays a supporting role on the surface layer, and meanwhile, the gap between the gravels ensures a water flow channel; through the arched structural design of slot and semi-rigid basic unit, when having the infiltration between semi-rigid basic unit and surface course, can discharge smoothly through the slot, avoid ponding phenomenon to take place, have extension road life's effect.
Optionally, a plurality of bulges are arranged on both sides of the semi-rigid base layer, and grooves matched with the bulges are formed in the bottom surface of the surface layer.
Through adopting above-mentioned technical scheme, improved the fixed effect of semi-rigid basic unit to the surface course, avoided the surface course to produce because of the vehicle load and pass and lead to the surface course to split.
Optionally, the upper surface of the semi-rigid base layer and the inner wall of the groove are coated with a waterproof coating layer.
Through above-mentioned technical scheme, waterproof coating layer can avoid the erosion of infiltration semi-rigid base course, improves semi-rigid base course's life.
Optionally, the coating layer is a waterproof layer made of water emulsion type chloroprene rubber asphalt.
By adopting the technical scheme, the advantages of good corrosion resistance, high elasticity, extensibility and cohesiveness, strong adaptability to deformation of the base layer, compact and complete coating film and good water resistance of the water-emulsion type chloroprene rubber asphalt coating are utilized, and the anti-cracking performance and the water corrosion resistance of the semi-rigid base layer are enhanced.
Optionally, a thermal insulation layer is disposed between the semi-rigid base layer and the facing layer.
Through adopting above-mentioned technical scheme, when the setting of insulating layer was avoided ambient temperature to change greatly, bituminous paving layer directly carried out heat transfer to between the semi-rigid basic unit, leads to bituminous paving because the shrink of cooling down rapidly forms the crack.
Optionally, the semi-rigid base layer is provided as a concrete layer.
By adopting the technical scheme, the concrete base layer has strong diffusion stress, certain tensile strength and fatigue resistance, so that the stress performance of the pavement base layer is good, and the stability of the base layer is ensured.
Optionally, the upper surface of the surface layer is coated with a rubber asphalt protective layer.
By adopting the technical scheme, rainwater is prevented from permeating downwards to destroy the cohesive force of asphalt, and rubber asphalt is utilized to have larger elasticity and elastic recovery capability at high temperature, so that the deformation resistance and fatigue cracking resistance of the pavement are improved, and the service life of the asphalt road is prolonged.
Optionally, the cross section of the rubber asphalt protective layer is set to be high in the middle and low on two sides.
Through adopting above-mentioned technical scheme, surface ponding can follow the middle flow direction road both sides of road to ponding on the road is got rid of fast, avoids ponding to corrode the road surface.
Optionally, the cushion layer is provided as a graded crushed stone layer.
Through adopting above-mentioned technical scheme, the shallow layer of soft earth foundation has been replaced to the level of grading rubble layer, reinforcing road surface structural strength avoids the shallow layer of foundation to be sheared destruction to realize that pitch road structure can bear bigger vehicle load, avoid taking place the condition of fracture.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the arched semi-rigid base layer and the grooves, the bearing capacity of the semi-rigid base layer is enhanced, meanwhile, accumulated water between the surface layer and the semi-rigid base layer is rapidly discharged, the bonding capacity between the surface layer and the semi-rigid base layer is prevented from being damaged by the accumulated water, and therefore the service life of a road is prolonged;
2. the graded broken stone cushion layer is laid on the soil foundation, the pavement structure is reinforced, and the semi-rigid base layer has a better bearing effect, so that the bearing capacity of the asphalt road structure is improved, and the effect of improving the service performance of the pavement is realized.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
fig. 2 is a schematic cross-sectional structure view along a longitudinal section of an embodiment of the present application.
Reference numerals: 1. soil foundation; 2. a cushion layer; 3. a semi-rigid base layer; 4. a thermal insulation layer; 5. a surface layer; 6. a rubber asphalt protective layer; 7. a protrusion; 8. a groove; 9. a trench; 10. and (5) coating the layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses anti-cracking asphalt road structure. Referring to fig. 1, prevent that ftractureing bituminous road structure has set gradually bed course 2, semi-rigid basic unit and surface course 5 from last to down, and bed course 2 sets up in soil matrix 1 top, and surface course 5 is the pitch layer, and bed course 2 chooses for use the graded broken stone layer, and graded broken stone bed course 2 can strengthen foundation strength, makes things convenient for laying of semi-rigid basic unit 3, guarantees the stability of semi-rigid basic unit 3 in the road use, avoids the road to sink and ftracture.
Referring to fig. 1 and 2, the semi-rigid base layer 3 laid on the upper surface of the cushion layer 2 is a concrete layer, the concrete layer has strong diffusion stress and good fatigue resistance, and the service life and the bearing performance of a road can be improved; semi-rigid basic unit 3's upper surface sets up to the arch, domes are favorable to improving semi-rigid basic unit 3's bearing capacity, the arch surface is provided with a plurality of slots 9, slot 9 sets up along perpendicular to bituminous paving extending direction, the intussuseption of slot 9 is filled with the metalling, the metalling has played the supporting role to surface course 5, and the clearance between the rubble can form the passageway of rivers, when having the infiltration between surface course 5 and semi-rigid basic unit 3, water can be extruded to the slot 9 in under the effect of pressure, along semi-rigid basic unit 3's arch surface flow to road both sides, the effect of infiltration between surface course 5 and the semi-rigid basic unit 3 is solved in the realization.
Referring to fig. 1, when pouring the basic unit, when arch semi-rigid basic unit 3 is half-dry, pour arch 7 with the sleeve mould on arch face of arch semi-rigid basic unit 3, wait to take off the mould behind arch 7 is half-dry, a plurality of archs 7 have all been pour to the both sides of semi-rigid basic unit 3, form a plurality of recesses 8 with arch 7 adaptation when surface course 5 bottom surface is laid, arch 7 and recess 8 are mutually supported, 3 fixed ability to surface course 5 of reinforcing semi-rigid basic unit, when road surface course 5 bears the load of vehicle, can provide holding power and tensile stress, thereby avoid surface course 5 to lead to the fracture because of local skew.
Referring to fig. 1, a water emulsion type neoprene asphalt coating layer 10 for water prevention is coated on the upper surface of a semi-rigid base layer 3 and the inner wall of a groove 9, the water emulsion type neoprene asphalt coating layer 10 can enhance the anti-cracking capability of the semi-rigid base layer 3 due to good ductility and viscosity while being water-proof, a heat insulation layer 4 is laid on the upper surface of the semi-rigid base layer 3, the heat insulation layer 4 is used for slowing down the cold contraction effect of a surface layer 5 so as to prevent the surface layer 5 from cracking caused by rapid cooling of the surface layer 5, and the heat insulation layer 4 can also be used for slowing down the transmission of high temperature of the surface layer 5 to the base layer so as to protect the waterproof coating on the surface of the semi-rigid base layer 3 from being damaged by the high temperature; surface course 5 has been laid to the upper surface of insulating layer 4, and the upper surface coating of surface course 5 has the rubberized asphalt inoxidizing coating 6 that is used for avoiding surface course 5 to the road inner structure infiltration, and the coating of 6 cross sections of rubberized asphalt inoxidizing coating is high in the middle of the both sides is low, and when the road surface had ponding, ponding can be followed the height and toward low flow direction road both sides, realizes the effect that ponding was got rid of fast to road surface course 5.
The implementation principle of the anti-cracking asphalt road structure provided by the embodiment of the application is as follows: the graded crushed stone layer is adopted as the cushion layer 2, so that the bearing capacity of the asphalt road structure is improved; through the structural design of the arched semi-rigid base layer 3 and the groove 9, the bearing capacity and the drainage performance of the base layer are improved, meanwhile, the groove 9 is filled with the gravel layer, so that the semi-rigid base layer 3 can support the surface layer 5, and gaps among the gravel are also beneficial to water outflow; the poured bulge 7 is matched with the groove 8 formed by paving the surface layer 5, so that the fixing effect of the base layer on the surface layer 5 is improved, and the surface layer 5 is prevented from generating local deviation and cracking; the water-proof effect of the semi-rigid base layer 3 is enhanced by arranging the water emulsion type chloroprene rubber asphalt coating; the heat insulation layer 4 is arranged on the upper surface of the waterproof layer to slow down the cold shrinkage effect of the surface layer 5, so that the surface layer 5 is prevented from cracking, and meanwhile, the damage to the waterproof layer caused by the direct transmission of the high temperature of the surface layer 5 to the waterproof layer is avoided; through setting up high structure rubber asphalt inoxidizing coating 6 in the middle of the both sides is low at 5 upper surfaces of surface course, strengthen road surface course 5's drainage ability, through rubber asphalt's fatigue resistance ability, avoid 5 ftractures of road surface course simultaneously, improve bituminous road structure's life.
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 (9)
1. The utility model provides a prevent bituminous road structure that ftractures, includes by lower supreme bed course (2), semi-rigid basic unit (3) and surface course (5) that set gradually, its characterized in that: semi-rigid basic unit (3) set up to the arch, semi-rigid basic unit (3) arch wall is provided with a plurality of slots (9), slot (9) perpendicular to road surface extending direction sets up, slot (9) intussuseption is filled with the rubble layer.
2. The crack-resistant asphalt road structure of claim 1, wherein: semi-rigid basic unit (3) both sides all are provided with a plurality of archs (7), surface course (5) bottom surface be provided with recess (8) of arch (7) adaptation.
3. The crack-resistant asphalt road structure of claim 2, wherein: the upper surface of the semi-rigid base layer (3) and the inner wall of the groove (9) are coated with a waterproof coating layer (10).
4. The crack-resistant asphalt road structure of claim 3, wherein: the coating layer (10) is a waterproof layer made of water emulsion type chloroprene rubber asphalt.
5. The crack-resistant asphalt road structure of claim 1, wherein: and a heat insulation layer (4) is arranged between the semi-rigid base layer (3) and the surface layer (5).
6. The crack-resistant asphalt road structure of claim 1, wherein: the semi-rigid base layer (3) is arranged as a concrete layer.
7. The crack-resistant asphalt road structure of claim 1, wherein: and a rubber asphalt protective layer (6) is coated on the upper surface of the surface layer (5).
8. The crack-resistant asphalt road structure according to claim 7, wherein: the cross section of the rubber asphalt protective layer (6) is set to be high in the middle and low on two sides.
9. The crack-resistant asphalt road structure of claim 1, wherein: the cushion layer (2) is arranged into a graded crushed stone layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122438171.0U CN216338806U (en) | 2021-10-09 | 2021-10-09 | Cracking-proof asphalt road structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122438171.0U CN216338806U (en) | 2021-10-09 | 2021-10-09 | Cracking-proof asphalt road structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216338806U true CN216338806U (en) | 2022-04-19 |
Family
ID=81177018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122438171.0U Expired - Fee Related CN216338806U (en) | 2021-10-09 | 2021-10-09 | Cracking-proof asphalt road structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216338806U (en) |
-
2021
- 2021-10-09 CN CN202122438171.0U patent/CN216338806U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220419 |