CN201753424U - Composite flexible base pavement structure - Google Patents
Composite flexible base pavement structure Download PDFInfo
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- CN201753424U CN201753424U CN2009201112795U CN200920111279U CN201753424U CN 201753424 U CN201753424 U CN 201753424U CN 2009201112795 U CN2009201112795 U CN 2009201112795U CN 200920111279 U CN200920111279 U CN 200920111279U CN 201753424 U CN201753424 U CN 201753424U
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- pavement
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- surface layer
- composite
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Abstract
The utility model provides a composite flexible base pavement structure which comprises a subbase layer and a surface layer and is characterized in that a middle layer is arranged between the subbase layer and the surface layer, so that the surface layer and the subbase layer of the pavement form a flexible and semi-rigid composite structure. Owning to the optimized structure of the base pavement with the combination of flexibility and semi-rigidity, the cracks can be automatically repaired and healed, the drainage capacity of the structural layer is enhanced, the flood damage is reduced, the anti-cracking, anti-rutting and anti-fatigue properties of the pavement are improved, the service life of the pavement is prolonged, the highway maintenance cost is reduced, the transportation requirement of the new situations can be fully met, and the utility model has better economical and social benefits.
Description
Technical field
The utility model relates to a kind of highway pavement structure, and especially a kind of novel road surface structure that is used for speedway, national highway arterial highway, town road belongs to the highway engineering technical field.
Background technology
Along with the Chinese society rapid economy development, the road construction paces are also accelerated thereupon, day by day the maximization of vehicle simultaneously, phenomenons such as the vehicle transport overload is serious, channelization, make normal operation, the maintaining of speedway be faced with acid test, also the structure design of speedway, material selection, construction etc. are had higher requirement simultaneously or challenge.But adopt semi-rigid type base to add the road structure of traditional asphalt layer in the highway construction at present mostly, the deficiency that this road structure brought is: reflection crack, hole groove, rut etc.Thereby it is serious to bring highway pavement to destroy, problems such as maintenance costs height, therefore, when constantly strengthening vehicle overload managing, also need excavate vast highway construction person's potential of innovation, make every effort to development, develop rational in infrastructurely, can prolong road application life, reduce maintenance of way expenditures, ensure the road structure of The coast is clear.
Summary of the invention
The purpose of this utility model is to provide a kind of and has simple in structure, good water permeability, level prepares, and can solve the composite and flexible basic unit road structure of high temperature rut problem under the heavily loaded traffic.
The utility model is finished by following technical proposal: a kind of composite and flexible basic unit road structure, comprise subbase and surface layer, and it is characterized in that between subbase and surface layer, the intermediate layer being set, make top course and basic unit constitute flexible and semirigid composite construction.
Described intermediate layer is the asphalt macadam mixed layer, and its thickness is 20～45cm, and pitch with the mixing quality ratio of rubble is: pitch 3～4%, surplus are rubble.
Described subbase is a macadam.
Described surface layer is an asphalt concrete layer.
Described pitch mixes in the bed of material with the rubble mix, ballast grain sizes be 22～40mm account for 25～35%, ballast grain sizes be 10～22mm account for 10～20%, ballast grain sizes be 6～10mm account for 15～25%, ballast grain sizes is less than 25～35% the mass ratio of accounting for of 6mm, allowing crack healing voluntarily, and strengthen the drainability of deck.
Described asphalt concrete pavement is made of the bituminous concrete upper layer of surface layer and fine grain under the bituminous concrete in the coarse grain footpath of prior art.
The utility model compared with prior art has following advantage and effect: adopt such scheme, promptly with pitch and rubble mix mix bed of material replacement cement and rubble mix mix the basic unit of the bed of material as the road surface, the asphalt concrete pavement and the bottom broken stone subbase that add upper surface, having constituted flexibility optimizes structure with the semi-rigid sub-surface that combines, can be to crack healing voluntarily, can strengthen the drainability of deck again, alleviate water damage, improve the cracking resistance on road surface, anti-rut, anti-fatigue performance, prolong service life of road surface, reduce maintenance cost of highway, can satisfy transport need under the new situation fully, have better economic and social benefit.
Description of drawings
Fig. 1 is the local section structure chart of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As Fig. 1, the composite and flexible basic unit road structure that the utility model provides, comprise that its thickness is that rubble subbase (1) and the thickness of 20cm is the asphalt concrete pavement of 10cm, wherein asphalt concrete pavement is that surface layer (3) and thickness are fine grain bituminous concrete upper layer (4) formation of 4cm under the coarse grain footpath bituminous concrete of 6cm by thickness, under rubble subbase 1 and bituminous concrete, be provided with between the surface layer (3) and mix the bed of material (2) by pitch and rubble mix, the thickness that mixes the bed of material (2) is 30cm, the pitch of the mixing bed of material (2) with the mixing quality ratio of rubble is: pitch 3%, rubble 97%, and ballast grain sizes be 22～40mm account for 30%, ballast grain sizes be 10～22mm account for 20%, ballast grain sizes be 6～10mm account for 20%, ballast grain sizes is less than 30% (mass percent) that account for of 6mm.
Claims (5)
1. a composite and flexible basic unit road structure comprises subbase and surface layer, it is characterized in that between subbase and surface layer the intermediate layer being set.
2. composite and flexible according to claim 1 basic unit road structure is characterized in that described intermediate layer thickness is 20～45cm.
3. composite and flexible according to claim 1 basic unit road structure is characterized in that described subbase is a macadam.
4. composite and flexible according to claim 1 basic unit road structure is characterized in that described surface layer is an asphalt concrete layer.
5. composite and flexible according to claim 1 basic unit road structure is characterized in that described intermediate layer is the asphalt macadam mixed layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201112795U CN201753424U (en) | 2009-04-24 | 2009-04-24 | Composite flexible base pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201112795U CN201753424U (en) | 2009-04-24 | 2009-04-24 | Composite flexible base pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753424U true CN201753424U (en) | 2011-03-02 |
Family
ID=43621156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201112795U Expired - Fee Related CN201753424U (en) | 2009-04-24 | 2009-04-24 | Composite flexible base pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753424U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774525A (en) * | 2014-01-18 | 2014-05-07 | 山东省交通科学研究所 | Long-life urban slate landscape road paving structure |
| CN104499397A (en) * | 2014-12-12 | 2015-04-08 | 东南大学 | Asphalt pavement structure based on coordination of deformation of subgrade and pavement |
| CN111455768A (en) * | 2020-04-30 | 2020-07-28 | 镇江港务集团有限公司 | Flexible roadbed asphalt concrete structure and construction method thereof |
-
2009
- 2009-04-24 CN CN2009201112795U patent/CN201753424U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774525A (en) * | 2014-01-18 | 2014-05-07 | 山东省交通科学研究所 | Long-life urban slate landscape road paving structure |
| CN103774525B (en) * | 2014-01-18 | 2016-08-24 | 山东省交通科学研究所 | A kind of long-life city slabstone view road pavement structure |
| CN104499397A (en) * | 2014-12-12 | 2015-04-08 | 东南大学 | Asphalt pavement structure based on coordination of deformation of subgrade and pavement |
| CN111455768A (en) * | 2020-04-30 | 2020-07-28 | 镇江港务集团有限公司 | Flexible roadbed asphalt concrete structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20110302 Termination date: 20180424 |