CN207031945U - A kind of composite pavement structure - Google Patents
A kind of composite pavement structure Download PDFInfo
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- CN207031945U CN207031945U CN201720740104.5U CN201720740104U CN207031945U CN 207031945 U CN207031945 U CN 207031945U CN 201720740104 U CN201720740104 U CN 201720740104U CN 207031945 U CN207031945 U CN 207031945U
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Abstract
The utility model belongs to highway engineering technical field, there is provided a kind of composite pavement structure, including roadbed, is also included in from bottom to top set on roadbed anti-and is impregnated with back-up coat, basic unit, suppression parting, water-proof tack coat, stress absorbing layer and surface layer；Prevent that it is composite geo-membrane to be impregnated with back-up coat, basic unit uses cement stabilized macadam base or two grey basic units, suppression parting is steel plastic compount GSZ, water-proof tack coat uses water-base epoxy asphalt waterproofing tack coat, stress absorbing layer uses SBS modified asphalt macadams layer or rubber asphalt metalling, and surface layer is modified asphalt layer.The utility model improves usage capability of road; avoid the generation of base course crack and reflection cracking in a pavement phenomenon; reduce the influence of loading stress; realize effective protection of road surface structare layer; extend service life of road surface; and it is not required to frequently conserve so that the cost of highway engineering cost substantially reduces.
Description
Technical field
It the utility model is related to highway engineering technical field, and in particular to a kind of composite pavement structure.
Background technology
At present, in domestic road construction, using cement stabilized macadam, this semi-rigid structure makees sub-surface, but cement more
Obvious defect in road construction be present in this semi-rigid property structure of stabilization gravel：1st, due to the influence expanded with heat and contract with cold, water
Cement-stabilizing broken stone basic unit can produce shrinkage cracking, and then cause Reflection Cracks Produced in Asphalt Pavement, and road conditions quality is impacted,
Road table water enters basic unit and road bed sub-base with crack, accelerates regional destroy of basic unit and reduces pavement life significantly；2nd, water
Cement-stabilizing broken stone structural strength is low, and bearing capacity is limited, the well damage under the repeated stock of heavy-duty vehicle, produces pit, rut
Deng, be influence pavement life an important factor for one of so that the average life span of domestic road is substantially reduced, and frequently road is supported
Shield, not only wastes time and energy, and cost is higher.
Composite pavement is the road surface that surface layer is combined by the structure sheaf of two layers of different materials type and mechanical property, energy
The respective performance advantage of flexible pavement and rigid pavement is enough given full play to, realizes flexible pavement and the effective and reasonable knot in rigid pavement
Close, compare the pavement structure of cement stabilized macadam semi-rigid type base and traditional asphalt layer, not only increase road performance and driving
Comfortableness, Road Service Life is extended, and compare the complete thick formula Grazing condition asphalt pavement structure of foreign countries, greatly reduce engineering
Cost, the large area road construction in suitable China are promoted the use of.
Utility model content
For in the prior art the defects of, the utility model provides a kind of composite pavement structure, improves road performance,
The problems such as pavement destruction is serious, maintenance costs is high is avoided, extends Road Service Life.
The utility model provides a kind of composite pavement structure, including roadbed, and the roadbed is the ground of compacting, is also wrapped
Include in from bottom to top set on the roadbed it is anti-be impregnated with back-up coat, basic unit, suppression parting, water-proof tack coat, stress absorbing layer and
Surface layer, described to prevent that it is composite geo-membrane to be impregnated with back-up coat, the suppression parting is steel plastic compount GSZ, and the surface layer is modification
Bitumen layer.
As an improvement scheme, the composite geo-membrane using chopped fiber needle-punched composite geo-membrane or PFY it is compound
Geomembrane, and filled out between the composite geo-membrane and the basic unit and be covered with medium coarse sand gravel.
As an improvement scheme, the basic unit uses cement stabilized macadam base or two grey basic units.
As an improvement scheme, the water-proof tack coat uses water-base epoxy asphalt waterproofing tack coat.
As an improvement scheme, the stress absorbing layer uses SBS modified asphalt macadams layer or rubber asphalt rubble
Layer.
As an improvement scheme, the modified asphalt layer is AC-13 modified asphalt mixtures or AC-16 modified pitch
The upper and lower surface layer of mating formation of compound or AC-13 modified asphalt mixtures and AC-16 modified asphalt mixtures.
As an improvement scheme, the thickness of the basic unit is 16-20cm, and the thickness of the water-proof tack coat is 1-
1.5cm, the thickness of the stress absorbing layer is 1.5-2.5cm, and the thickness of the modified asphalt layer is 4-6cm.
Due to using above technical scheme, the utility model has the advantages that；
1st, the composite geo-membrane being provided between roadbed of the present utility model and basic unit, can road pavement structure play certain journey
The reinforcement effect of degree so that the bearing capacity of the composite road surface structure increases compared with conventional pav structure, meanwhile, what is be provided with should
Composite geo-membrane can prevent road table water from penetrating into the calving disaggregation to rammed subgrade roadbed when shrinkage cracking occurs in basic unit, rise
To the protective effect to roadbed.
2nd, mat formation on basic unit of the present utility model the steel plastic compount GSZ having, can effectively avoid base course crack and
The generation and extension of surface layer reflection crack, play a part of protectiveness elastic membrane, extend the service life on road surface；On the one hand, energy
The stress that load is applied in basic unit is enough effective against, prevents the generation in crack；On the other hand, after crack produces, can press down
Continue to extend in crack processed；In addition, steel plastic compount GSZ cost is low, construction technology is simple and convenient.
3rd, the utility model is mated formation the water-proof tack coat having, the effective bonding for realizing basic unit between surface layer of mating formation, use
Water-base epoxy asphalt waterproofing tack coat, avoids influence of the rainwater to basic unit, and with excellent low temperature flexibility and heat resistance, resistance to
Long property, is easy to engineering construction.
4th, the SBS modified asphalt macadams layer or rubber asphalt metalling mated formation under the utility model surface layer make stress absorption
Layer, reduce influences caused by loading stress road pavement structure, while also has prevention, delays or even prevent surface layer reflection crack
Formation and development, and waterproof, the effect of joint filling.
5th, the modified asphalt layer that the utility model uses, while road-ability is ensured, enhances the wear-resisting of road surface
Property, the antiskid performance on road surface is improved, driving load can be effectively reduced to the percussion of basic unit etc., avoids pit, rut
Phenomena such as generation, be not required to frequently conserve.
6th, the medium coarse sand gravel of paving is filled out in the utility model, between composite geo-membrane and basic unit, can effectively prevent geomembrane quilt
Sharp stone punctures the generation of phenomenon, plays the protective effect to composite geo-membrane.
In summary, the utility model improves usage capability of road, avoids base course crack and reflection cracking in a pavement
The generation of phenomenon, the influence of loading stress is reduced, realizes effective protection of road surface structare layer, extend service life of road surface,
And it is not required to frequently conserve so that the cost of highway engineering cost substantially reduces.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art.In all of the figs, it is similar
Element or part are typically identified by similar reference.In accompanying drawing, each element or part might not be according to the ratios of reality
Draw.
Fig. 1 is structural representation of the present utility model；
Reference：1- roadbeds；2- is anti-to be impregnated with back-up coat；3- basic units；4- presses down parting；5- water-proof tack coats；6- stress is inhaled
Receive layer；7- surface layers.
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is only used as, and this practicality can not be limited with this
New protection domain.
As shown in figure 1, the utility model provides a kind of composite pavement structure, including roadbed 1, also it is included in roadbed 1
On from bottom to top set anti-be impregnated with back-up coat 2, basic unit 3, suppression parting 4, water-proof tack coat 5, stress absorbing layer 6 and surface layer 7, road
Base 1 is the ground of compacting, and to ensure the strength performance of composite road surface structure, the compactness of roadbed 1 is more than 94%.
Anti- to be impregnated with back-up coat 2 be composite geo-membrane, to realize effective reinforcing of roadbed 1 and impermeable, in the present embodiment, is answered
Close geomembrane and use chopped fiber needle-punched composite geo-membrane or polyester filament composite geotechnical film, the composite earth of mating formation on the roadbed 1 of compacting
Work film, can road pavement structure play a certain degree of reinforcement effect so that the bearing capacity of the composite road surface structure is more traditional
Pavement structure increases, meanwhile, the composite geo-membrane being provided with can prevent road table water when shrinkage cracking occurs in basic unit 3
The calving disaggregation to rammed subgrade roadbed 1 is penetrated into, plays the protective effect to roadbed 1；Certainly, it is that can effectively prevent geomembrane
The generation of phenomenon is punctured by sharp stone, plays the protective effect to composite geo-membrane, is filled out between composite geo-membrane and basic unit 3 thick in being covered with
Gravel.
As the supporting course of whole road, stable road surface is played a part of by basic unit 3, to cause the quality on road surface and usability
Effective guarantee can be obtained, in the present embodiment, basic unit 3 is existed using the grey basic unit 3 of cement stabilized macadam base 3 or two, its laying depth
Between 16-20cm.
Mat formation on basic unit 3 the suppression parting 4 having, be steel plastic compount GSZ, can effectively avoid basic unit 3 from ftractureing and face
The generation and extension of 7 reflection crack of layer, play a part of protectiveness elastic membrane, extend the service life on road surface；On the one hand, can
The stress that load is applied in basic unit 3 is effective against, prevents the generation in crack；On the other hand, after crack produces, can suppress
Continue to extend in crack；In addition, steel plastic compount GSZ cost is low, construction technology is simple and convenient.
For the effective bonding for realizing basic unit 3 between surface layer 7 of mating formation, press down on parting 4 and be equipped with water-proof tack coat 5, this reality
Apply in example, water-proof tack coat 5 is using water-base epoxy asphalt waterproofing tack coat 5, and pavement thickness is 1-1.5cm, use it is water-based
Bituminous epoxy water-proof tack coat 5 can avoid influence of the rainwater to basic unit 3, and with excellent low temperature flexibility and heat resistance,
Durability, it is easy to engineering construction.
To reduce the influence of heavy-duty vehicle load road pavement repeated stock, mat formation to have between water-proof tack coat 5 and surface layer 7 and answer
Power absorbed layer 6, in the present embodiment, stress absorbing layer 6 makees stress suction using SBS modified asphalt macadams layer or rubber asphalt metalling
Receive layer 6, pavement thickness 1.5-2.5cm, while decrease loading stress road pavement structure has an impact, it may have prevention,
Delay or even prevent the formation and development of the reflection crack of surface layer 7, and waterproof, the effect of joint filling.
Surface layer 7 is modified asphalt layer, and the modified asphalt layer of use compares traditional bitumen layer pavement structure, is ensureing to drive a vehicle
While comfortableness, the wearability on road surface is enhanced, improves the antiskid performance on road surface, driving load can be effectively reduced to base
The percussion of 3 grade of layer, the generation for phenomena such as avoiding pit, rut, is not required to frequently conserve；In the present embodiment, modified pitch
Layer pavement thickness is 4-6cm, using AC-13 modified asphalt mixtures or AC-16 modified asphalt mixtures, to cause pavement structure
Performance more preferably, using AC-13 modified asphalt mixtures and the paving structure up and down of AC-16 modified asphalt mixtures, pavement thickness
For 10-12cm, certainly, it can also increase AC-20 modified asphalt mixtures of mating formation, pavement thickness under AC-16 modified asphalt mixtures
For 8cm or so, with significantly more efficient raising Pavement Condition.
In specification of the present utility model, numerous specific details are set forth, it is to be appreciated, however, that reality of the present utility model
Applying example can put into practice in the case of these no details.In some instances, known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover among claim of the present utility model and the scope of specification.
Claims (7)
1. a kind of composite pavement structure, including roadbed, the roadbed is the ground of compacting, it is characterised in that：Also it is included in institute
State from bottom to top set on roadbed anti-and be impregnated with back-up coat, basic unit, suppression parting, water-proof tack coat, stress absorbing layer and surface layer；Institute
State and prevent that it is composite geo-membrane to be impregnated with back-up coat, the suppression parting is steel plastic compount GSZ, and the surface layer is modified asphalt layer.
2. composite pavement structure according to claim 1, it is characterised in that：The composite geo-membrane is using chopped fiber needle-punched
Composite geo-membrane or polyester filament composite geotechnical film, and filled out between the composite geo-membrane and the basic unit and be covered with medium coarse sand gravel.
3. composite pavement structure according to claim 1, it is characterised in that：The basic unit uses cement stabilized macadam base
Ceng Huoerhui basic units.
4. composite pavement structure according to claim 1, it is characterised in that：The water-proof tack coat uses water-base epoxy
Asphalt waterproofing tack coat.
5. composite pavement structure according to claim 1, it is characterised in that：The stress absorbing layer is modified using SBS
Bituminous macadam or rubber asphalt metalling.
6. composite pavement structure according to claim 1, it is characterised in that：The modified asphalt layer is modified for AC-13
Asphalt or AC-16 modified asphalt mixtures or AC-13 modified asphalt mixtures and AC-16 modified asphalt mixtures it is upper
Under mat formation surface layer.
7. according to the composite pavement structure described in claim any one of 1-6, it is characterised in that：The thickness of the basic unit is
16-20cm, the thickness of the water-proof tack coat is 1-1.5cm, and the thickness of the stress absorbing layer is 1.5-2.5cm, described to change
The thickness of property bitumen layer is 4-6cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740104.5U CN207031945U (en) | 2017-06-23 | 2017-06-23 | A kind of composite pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740104.5U CN207031945U (en) | 2017-06-23 | 2017-06-23 | A kind of composite pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207031945U true CN207031945U (en) | 2018-02-23 |
Family
ID=61468849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720740104.5U Expired - Fee Related CN207031945U (en) | 2017-06-23 | 2017-06-23 | A kind of composite pavement structure |
Country Status (1)
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| CN (1) | CN207031945U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130174A (en) * | 2019-05-27 | 2019-08-16 | 中国港湾工程有限责任公司 | The laying method of the bituminous pavement of Rut resistance |
| CN110904851A (en) * | 2019-12-17 | 2020-03-24 | 中交路桥建设有限公司 | Bridge deck pavement method |
| CN112144397A (en) * | 2019-06-28 | 2020-12-29 | 中国市政工程中南设计研究总院有限公司 | Cement concrete bridge deck pavement structure with anti rut and waterproof function |
| CN113774748A (en) * | 2021-08-20 | 2021-12-10 | 山东高速集团有限公司 | High-toughness grid reinforced asphalt pavement and construction method thereof |
-
2017
- 2017-06-23 CN CN201720740104.5U patent/CN207031945U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130174A (en) * | 2019-05-27 | 2019-08-16 | 中国港湾工程有限责任公司 | The laying method of the bituminous pavement of Rut resistance |
| CN112144397A (en) * | 2019-06-28 | 2020-12-29 | 中国市政工程中南设计研究总院有限公司 | Cement concrete bridge deck pavement structure with anti rut and waterproof function |
| CN110904851A (en) * | 2019-12-17 | 2020-03-24 | 中交路桥建设有限公司 | Bridge deck pavement method |
| CN113774748A (en) * | 2021-08-20 | 2021-12-10 | 山东高速集团有限公司 | High-toughness grid reinforced asphalt pavement and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310000 15-16 floor, Qianjiang building, 2031 Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: Zhejiang interchange International Engineering Co., Ltd. Address before: 310000 15-16 floor, Qianjiang building, 2031 Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee before: Zhejiang Jiaogong Qianchao Construction Co. Ltd. |
|
| 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: 20180223 Termination date: 20210623 |