CN209923715U - Durable combined type road surface structure - Google Patents
Durable combined type road surface structure Download PDFInfo
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- CN209923715U CN209923715U CN201920431695.7U CN201920431695U CN209923715U CN 209923715 U CN209923715 U CN 209923715U CN 201920431695 U CN201920431695 U CN 201920431695U CN 209923715 U CN209923715 U CN 209923715U
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Abstract
The utility model relates to a transportation engineering field specifically is a durable combined type road surface structure, surface course and rubble bed course under asphalt concrete surface course, asphalt concrete, the surface course sets up the downside at asphalt concrete surface course under the asphalt concrete, and the downside of surface course is provided with the stress absorption functional layer under the asphalt concrete, the downside of stress absorption functional layer is provided with the cement concrete pavement layer, the downside of cement concrete pavement layer is provided with waterproof isolation layer, waterproof isolation layer's downside is provided with lean concrete basic unit, the rubble bed course sets up the downside at lean concrete basic unit. The device is a composite pavement structure, and well combines the advantages of easy maintenance and comfortable driving of a flexible pavement and the advantages of high rigidity, strong bearing capacity and low manufacturing cost of a rigid pavement; the structure is a durable pavement, the design age of the pavement is 30 years, and the cost of the whole life cycle is low.
Description
Technical Field
The utility model relates to a transportation engineering field specifically is a durable combined type road surface structure.
Background
Most of high-grade highway pavements in China adopt a cement-stabilized macadam base asphalt concrete pavement structure. The cement stabilized macadam base layer is easy to crack due to drying shrinkage and temperature shrinkage, and further the reflection crack of the asphalt concrete pavement is caused. Usually, the cement stabilized macadam base layer and the subbase layer need to be constructed in three layers, the integrity is not strong, and the problem of interlayer combination exists. At present, the requirement on the engineering construction progress is generally high, and a construction machine vehicle usually needs to run on constructed cement stabilized macadam, so that the damage to a water-stabilized macadam layer is caused. The cement stabilized gravel layer is exposed to the sun and rain, and the conditions of dryness, temperature shrinkage cracking and road performance attenuation are easy to occur.
At present, the proportion of highways, bridges and tunnels in many mountainous areas is high, the transition between a roadbed and the bridges and the tunnels is frequent, the length of a continuous roadbed is short, and when cement stabilized macadam which needs to be rolled and formed is constructed, large construction machinery such as a road roller and a paver needs to be frequently deployed. Is not beneficial to the continuous construction of the road bed and the bridge and tunnel road surface and the construction organization and the quality control.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a durable combined type road surface structure to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a durable combined type road surface structure, includes bituminous concrete surface course, bituminous concrete lower surface course and rubble bed course, bituminous concrete lower surface course sets up the downside at bituminous concrete surface course, and the downside of bituminous concrete lower surface course is provided with the stress absorption functional layer, the downside of stress absorption functional layer is provided with cement concrete pavement course, cement concrete pavement course's downside is provided with waterproof isolation layer, waterproof isolation layer's downside is provided with lean concrete base, the rubble bed course sets up the downside at lean concrete base.
As a further aspect of the present invention: the thickness of the asphalt concrete surface layer is 4cm, and the asphalt concrete surface layer is made of AC-13 or SMA-13 type asphalt mixture.
As a further aspect of the present invention: the thickness of the lower surface layer of the asphalt concrete is 6-8cm, and an AC-20 type asphalt mixture is adopted.
As a further aspect of the present invention: the thickness of the stress absorption functional layer is 2.5-3cm, and an AC-10 type asphalt mixture is adopted.
As a further aspect of the present invention: the thickness of the cement concrete pavement layer is 26-30 cm.
As a further aspect of the present invention: the waterproof isolation layer is a hot asphalt waterproof isolation layer with two cloth films.
As a further aspect of the present invention: the lean concrete base layer adopts a C10, C15 or C20 lean concrete base layer.
As a further aspect of the present invention: the gravel cushion layer adopts graded gravel or unscreened gravel cushion layer with the thickness not less than 32 cm.
Compared with the prior art, the beneficial effects of the utility model are that: the device is a composite pavement structure, and well combines the advantages of easy maintenance and comfortable driving of a flexible pavement and the advantages of high rigidity, strong bearing capacity and low manufacturing cost of a rigid pavement; the bearing capacity of the road surface and the anti-scouring capacity of the base layer are effectively improved, continuous construction of the roadbed and the bridge and tunnel road surface is facilitated, and construction organization and quality control are facilitated; the adaptability of the road surface to the settlement of the roadbed is effectively improved, the deformation of the roadbed is coordinated, and the capability of joint stress and cooperative work of the roadbed and the road surface is improved; effectively delays reflection cracks, improves the high-temperature anti-rutting capability of the asphalt surface layer and the anti-shearing and anti-deformation capability between the asphalt surface layer and the cement panel. The structure is a durable pavement, the design age of the pavement is 30 years, and the cost of the whole life cycle is low.
Drawings
Fig. 1 is a schematic structural diagram of the device.
1-asphalt concrete surface layer; 2-asphalt concrete lower surface layer; 3-a stress absorbing functional layer; 4-cement concrete pavement layer; 5-waterproof isolation layer; 6-lean concrete base course; 7-gravel cushion.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
Referring to fig. 1, in the embodiment of the utility model, a durable combined type road surface structure, including asphalt concrete surface course 1, asphalt concrete lower surface course 2 and rubble bed course 7, asphalt concrete lower surface course 2 sets up at asphalt concrete surface course 1's downside, and asphalt concrete lower surface course 2's downside is provided with stress absorption functional layer 3, stress absorption functional layer 3's downside is provided with cement concrete pavement layer 4, cement concrete pavement layer 4's downside is provided with waterproof isolation layer 5, waterproof isolation layer 5's downside is provided with lean concrete basic unit 6, rubble bed course 7 sets up the downside at lean concrete basic unit 6.
The thickness of the asphalt concrete surface layer 1 is 4cm, the asphalt concrete surface layer 1 is made of AC-13 or SMA-13 type asphalt mixture, the thickness of the asphalt concrete lower surface layer 2 is 6-8cm, the AC-20 type asphalt mixture is adopted, the thickness of the stress absorption functional layer 3 is 2.5-3cm, the AC-10 type asphalt mixture is adopted, the thickness of the cement concrete pavement layer 4 is 26-30cm, the lean concrete base layer 6 is a C10, C15 or C20 lean concrete base layer, and the gravel cushion layer 7 is made of graded gravel or unsized gravel cushion layer with the thickness not less than 32 cm.
The road surface structure does not adopt cement stabilized macadam, the structure base layer adopts the lean concrete base layer 6, the bearing capacity of the road surface and the anti-scouring capacity of the base layer can be effectively improved, the continuous construction of the road bed and the bridge and tunnel road surface can be more convenient by adopting the concrete formed by plasticity rather than the cement stabilized macadam material formed by rolling, the frequent allocation of large construction machines such as a road roller, a paver and the like is reduced, and the construction organization and the quality control are convenient. The adoption of the thicker broken stone cushion layer 7 can properly improve the adaptability of the pavement to the settlement of the roadbed, coordinate the deformation of the roadbed and improve the capability of common stress and cooperative work of the roadbed and the pavement. The device adopts the stress absorption functional layer 3 to effectively delay reflection cracks, and improves the high-temperature anti-rutting capability of the asphalt surface layer and the anti-shearing and anti-deformation capability between the asphalt surface layer and the cement panel.
The device is a composite pavement structure, and well combines the advantages of easy maintenance and comfortable driving of a flexible pavement and the advantages of high rigidity, strong bearing capacity and low manufacturing cost of a rigid pavement; the bearing capacity of the road surface and the anti-scouring capacity of the base layer are effectively improved, continuous construction of the roadbed and the bridge and tunnel road surface is facilitated, and construction organization and quality control are facilitated; the adaptability of the road surface to the settlement of the roadbed is effectively improved, the deformation of the roadbed is coordinated, and the capability of joint stress and cooperative work of the roadbed and the road surface is improved; effectively delays reflection cracks, improves the high-temperature anti-rutting capability of the asphalt surface layer and the anti-shearing and anti-deformation capability between the asphalt surface layer and the cement panel. The structure is a durable pavement, the design age of the pavement is 30 years, and the cost of the whole life cycle is low.
Example two
On the basis of the first embodiment, the waterproof isolation layer 5 is formed by two cloth-one membranes and a hot asphalt waterproof isolation layer, and the two cloth-one membranes and the hot asphalt waterproof isolation layer are arranged between the lean concrete base layer 6 and the cement concrete surface layer 4, so that the construction is simple and easy, the isolation effect can be completely realized, a good and smooth working interface can be provided for a concrete panel, and the water scouring resistance is strong.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a durable combined type road surface structure, includes bituminous concrete surface course (1), bituminous concrete lower surface course (2) and rubble bed course (7), bituminous concrete lower surface course (2) set up the downside at bituminous concrete surface course (1), its characterized in that, the downside of bituminous concrete lower surface course (2) is provided with stress absorption functional layer (3), the downside of stress absorption functional layer (3) is provided with cement concrete pavement layer (4), the downside of cement concrete pavement layer (4) is provided with waterproof isolation layer (5), the downside of waterproof isolation layer (5) is provided with lean concrete basic unit (6), rubble bed course (7) set up the downside at lean concrete basic unit (6).
2. A durable composite pavement structure as claimed in claim 1, characterized in that said bituminous concrete surface layer (1) has a thickness of 4cm, said bituminous concrete surface layer (1) being of the type AC-13 or SMA-13 bituminous mix.
3. A durable composite pavement structure according to claim 1 or 2, characterised in that said bituminous concrete lower layer (2) has a thickness of 6-8cm and is made of an AC-20 bituminous mix.
4. A durable composite pavement structure according to claim 3, characterised in that said functional stress absorbing layer (3) has a thickness of 2.5-3cm and is of the AC-10 type bituminous mix.
5. A durable composite pavement structure as claimed in claim 4, characterised in that said cement concrete pavement layer (4) has a thickness of 26-30 cm.
6. A durable composite pavement structure, according to claim 1, characterized in that said waterproofing barrier (5) is a two-cloth-one-film and hot asphalt waterproofing barrier.
7. A durable composite pavement structure as claimed in claim 1, wherein said low-concrete base course (6) is a C10, C15 or C20 low-concrete base course.
8. A durable composite pavement structure as claimed in claim 1, characterized in that said gravel cushion (7) is composed of graded or unscreened gravel cushions having a thickness not less than 32 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431695.7U CN209923715U (en) | 2019-04-01 | 2019-04-01 | Durable combined type road surface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431695.7U CN209923715U (en) | 2019-04-01 | 2019-04-01 | Durable combined type road surface structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209923715U true CN209923715U (en) | 2020-01-10 |
Family
ID=69072165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920431695.7U Expired - Fee Related CN209923715U (en) | 2019-04-01 | 2019-04-01 | Durable combined type road surface structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209923715U (en) |
-
2019
- 2019-04-01 CN CN201920431695.7U patent/CN209923715U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |