CN215857011U - Flexible pavement structure - Google Patents
Flexible pavement structure Download PDFInfo
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- CN215857011U CN215857011U CN202121294480.9U CN202121294480U CN215857011U CN 215857011 U CN215857011 U CN 215857011U CN 202121294480 U CN202121294480 U CN 202121294480U CN 215857011 U CN215857011 U CN 215857011U
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- asphalt
- layer
- broken stone
- flexible pavement
- pavement structure
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Abstract
The utility model discloses a flexible pavement structure which comprises a graded broken stone base layer, a modified emulsified asphalt layer, a cement-stabilized graded broken stone layer, an asphalt lower layer, an asphalt middle layer and an asphalt upper layer which are sequentially arranged from bottom to top, wherein the asphalt upper layer, the asphalt middle layer and the asphalt lower layer are respectively AC-13C asphalt concrete, AC-20C asphalt concrete and AC-25C asphalt concrete, the graded broken stone base layer adopts 10-30mm broken stones which are matched according to a proportion and are used for filling pores step by step, and a compact structure is formed after compaction. The utility model solves the problem that the prior asphalt pavement is easy to generate rutting and cracking, so that the pavement is easy to damage.
Description
Technical Field
The utility model relates to the technical field of road engineering, in particular to a flexible pavement structure.
Background
The road surface of China at present can be basically divided into a cement concrete road surface and an asphalt concrete road surface, the cement concrete road surface has good bearing capacity, but has poor flexibility, and the problem of plate cracking easily occurs under the action of temperature stress, so joints are required to be arranged on the cement concrete road surface, the comfort of driving is influenced, and surface water can invade into the roadbed, so that the roadbed becomes soft and the bearing capacity is weakened. The asphalt concrete pavement has the advantages of comfortable driving, low noise, convenient maintenance and the like, and becomes a main pavement structure form, but after the asphalt concrete pavement is used for a period of time, deeper ruts and cracks can appear on the asphalt concrete pavement, so that the damage of the pavement is caused, and the driving safety and the comfort are seriously influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a flexible pavement structure which solves the problem that the existing asphalt pavement is easy to generate ruts and cracks, so that the pavement is easy to damage.
The technical scheme adopted by the utility model is as follows: the utility model provides a flexible pavement structure, includes the graded rubble basic unit, modified emulsified asphalt layer, cement stabilization graded rubble layer, pitch lower floor, pitch middle level and the pitch upper strata that set gradually from bottom to top, pitch upper strata, pitch middle floor are AC-13C asphalt concrete, AC-20C asphalt concrete and AC-25C asphalt concrete respectively, graded rubble basic unit adopts 10-30 mm's rubble to cooperate according to the proportion, fills the hole step by step, forms compact structure after the compaction.
Preferably, the thickness of the graded macadam foundation layer is 25-40 cm.
Preferably, in the technical scheme, the thickness of the cement stabilizing graded crushed stone layer is 15-20 cm.
Preferably, in the technical scheme, the thicknesses of the lower asphalt layer, the middle asphalt layer and the upper asphalt layer are respectively 10, 8 and 6 cm.
Preferably, the modified emulsified asphalt layer is 10 cm.
Compared with the prior art, the modified emulsified asphalt layer is arranged between the graded broken stone base layer and the cement stabilization graded broken stone layer, so that the conduction of cracks between the graded broken stone base layer and the cement stabilization graded broken stone layer is slowed down, the diffusion of the cracks is effectively avoided, the generation of reflection cracks of the road surface is further reduced and delayed, the asphalt layer adopts high-modulus asphalt concrete, the strength of the road surface is improved by improving the modulus of the asphalt concrete, and the problem of rutting under the condition of extra-heavy overload is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a graded broken stone base layer, 2, a modified emulsified asphalt layer, 3, a cement stabilized graded broken stone layer, 4, an asphalt lower layer, 5, an asphalt middle layer, 6 and an asphalt upper layer.
Detailed Description
The utility model is described in detail below with reference to the figures and examples.
As shown in figure 1, the flexible pavement structure comprises a graded broken stone base layer 1, a modified emulsified asphalt layer 2, a cement-stabilized graded broken stone layer 3, an asphalt lower layer 4, an asphalt middle layer 5 and an asphalt upper layer 6 which are sequentially arranged from bottom to top, wherein the asphalt upper layer 6, the asphalt middle layer 5 and the asphalt lower layer 4 are respectively AC-13C asphalt concrete, AC-20C asphalt concrete and AC-25C asphalt concrete, and the graded broken stone base layer 1 is formed by matching 10-30mm broken stones in proportion, filling pores step by step and compacting to form a compact structure.
Example 1 of the utility model: the graded broken stone base layer 1 is formed by adopting 10-15mm broken stones to match in proportion, filling pores step by step and compacting, and a compact structure is formed, wherein the thickness of the graded broken stone base layer 1 is 40 cm. The thickness of the cement stabilized graded crushed stone layer 3 is 20 cm. The thicknesses of the lower asphalt layer 4, the middle asphalt layer 5 and the upper asphalt layer 6 are respectively 10cm, 8 cm and 6 cm. The modified emulsified asphalt layer 2 was 10 cm.
Example 2 of the utility model: the graded broken stone base layer 1 is formed by adopting 20-30mm broken stones to be matched in proportion and filling pores step by step, a compact structure is formed after compaction, and the thickness of the graded broken stone base layer 1 is 25 cm. The thickness of the cement stabilized graded crushed stone layer 3 is 15 cm. The thicknesses of the lower asphalt layer 4, the middle asphalt layer 5 and the upper asphalt layer 6 are respectively 10cm, 8 cm and 6 cm. The modified emulsified asphalt layer 2 was 10 cm.
Example 3 of the utility model: the graded broken stone base layer 1 is formed by adopting 15-30mm broken stones to be matched in proportion and filling pores step by step, a compact structure is formed after compaction, and the thickness of the graded broken stone base layer 1 is 30 cm. The thickness of the cement stabilized graded crushed stone layer 3 is 16 cm. The thicknesses of the lower asphalt layer 4, the middle asphalt layer 5 and the upper asphalt layer 6 are respectively 10cm, 8 cm and 6 cm. The modified emulsified asphalt layer 2 was 10 cm.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (5)
1. A flexible pavement structure, its characterized in that: the asphalt base layer is composed of 10-30mm of gravels in proportion, holes are filled step by step, and a compact structure is formed after compaction.
2. A flexible pavement structure according to claim 1, characterized in that: the thickness of the graded broken stone base layer is 25-40 cm.
3. A flexible pavement structure according to claim 1, characterized in that: the thickness of the cement stabilizing graded crushed stone layer is 15-20 cm.
4. A flexible pavement structure according to claim 1, characterized in that: the thicknesses of the asphalt lower layer, the asphalt middle layer and the asphalt upper layer are respectively 10cm, 8 cm and 6 cm.
5. A flexible pavement structure according to claim 1, characterized in that: the modified emulsified asphalt layer is 10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294480.9U CN215857011U (en) | 2021-06-10 | 2021-06-10 | Flexible pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294480.9U CN215857011U (en) | 2021-06-10 | 2021-06-10 | Flexible pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215857011U true CN215857011U (en) | 2022-02-18 |
Family
ID=80314857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121294480.9U Expired - Fee Related CN215857011U (en) | 2021-06-10 | 2021-06-10 | Flexible pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215857011U (en) |
-
2021
- 2021-06-10 CN CN202121294480.9U patent/CN215857011U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20220218 |