CN217556597U - Noise-reduction drainage pavement structure - Google Patents
Noise-reduction drainage pavement structure Download PDFInfo
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- CN217556597U CN217556597U CN202220862107.7U CN202220862107U CN217556597U CN 217556597 U CN217556597 U CN 217556597U CN 202220862107 U CN202220862107 U CN 202220862107U CN 217556597 U CN217556597 U CN 217556597U
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Abstract
The utility model relates to a road surface structure technical field, more specifically say, relate to a drainage road surface structure of making an uproar falls. Including road surface basement, waterproof bonding layer, fall drainage blanket and enhancement layer of making an uproar, waterproof bonding layer lays in road surface basement top, and the lower surface course has been laid to waterproof bonding layer top, and the surface course in has been laid to lower surface course top, falls the drainage blanket of making an uproar and lays in the surface course top, and the drainage blanket top of making an uproar falls in the enhancement layer is laid. This road surface structure support nature is good, and it is good to fall the drainage effect of making an uproar, has effectively reduced the noise pollution that the road surface produced, and the material selection environmental protection is easily promoted. The utility model discloses mainly be applied to the drainage road surface structure aspect of making an uproar of falling.
Description
Technical Field
The utility model relates to a road surface structure technical field, more specifically say, relate to a drainage road surface structure of making an uproar falls.
Background
In recent years, along with the increasing of the road mileage, traffic flow and driving speed, the interference degree of road traffic noise pollution to the normal living, working, learning and rest environments of residents along the line is also increased. Road traffic noise pollution has become a serious concern for environmental pollution by residents along the route. The asphalt concrete pavement has the advantages of noise reduction, dust reduction, skid resistance and the like, and is widely used in the main road sections of cities, but the noise generated by various factors on the asphalt concrete pavement still seriously affects the life and work of residents along the line, so the noise reduction becomes an environmental problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of existence among the above-mentioned prior art, the utility model provides a drainage road surface structure of making an uproar falls. The road surface structure realizes noise reduction and drainage effects on the basis of ensuring road performance, is an effective way for reducing noise pollution from the road angle, and has good noise control effect and high environmental protection benefit.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does:
the utility model provides a drainage road surface structure of making an uproar falls, includes road surface basement, waterproof bonding layer, falls drainage blanket and enhancement layer of making an uproar, waterproof bonding layer lays in road surface basement top, the lower surface course has been laid to waterproof bonding layer top, the well surface course has been laid to the lower surface course top, it lays in well surface course top to fall the drainage blanket of making an uproar, the drainage blanket top of making an uproar falls in the enhancement layer is laid.
The pavement base comprises an underlayer, a semi-rigid base layer and a stress absorption layer, wherein the semi-rigid base layer is laid above the underlayer, and the stress absorption layer is laid above the semi-rigid base layer.
The subbase layer is formed by paving graded gravel materials, and the thickness is 25-35 cm.
The semi-rigid base layer is formed by paving cement-stabilized macadam, and the thickness of the semi-rigid base layer is 15-20 cm.
The stress absorption layer is formed by paving rubber asphalt macadam, the thickness is 15-20 cm, and the maximum grain size of the macadam is 30mm.
The waterproof bonding layer is made of one of modified asphalt, modified emulsified asphalt or rubber asphalt seal, and the modified emulsified asphalt is one of SBR modified emulsified asphalt, SBS high polymer modified emulsified asphalt and water-based high polymer modified emulsified asphalt.
The lower surface layer is formed by paving an AC-25 asphalt mixture, and the paving thickness of the lower surface layer is 8-10 cm.
The middle surface layer is formed by paving an AC-20 asphalt mixture, and the paving thickness of the middle surface layer is 4-6 cm.
The noise reduction and drainage layer is formed by paving macroporous asphalt concrete or rubber asphalt concrete materials.
The reinforced layer is formed by paving coarse aggregates and fine aggregates, the coarse aggregates are magma rock macadam, the particle size of the coarse aggregates is larger than 5mm, the fine aggregates are limestone stones, and the particle size of the fine aggregates is smaller than 2.2mm.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
the semi-rigid base course paved by adopting cement stabilized macadam has higher rigidity and load diffusion capacity, is not easy to generate ruts, and reduces the generation of cracks; the stress absorption layer formed by paving the subbase layer, the semi-rigid base layer and the stress absorption layer has good temperature crack resistance and strong bending and tensile resistance; the waterproof bonding layer can bond the middle surface layer and the noise reduction and drainage layer, has good waterproof performance, prevents water from permeating, and further protects the pavement lower layer structure; the noise-reduction drainage layer paved by the macroporous asphalt concrete or the rubber asphalt concrete plays a role in noise reduction and drainage, improves the driving safety in rainy days, and improves the stability of a road surface; the reinforcing layer consisting of coarse aggregate and fine aggregate improves the strength of the road surface; this road surface structure support nature is good, and it is good to fall the drainage effect of making an uproar, has effectively reduced the noise pollution that the road surface produced, and the material selection environmental protection is easily promoted.
Drawings
FIG. 1 is a schematic view of the pavement structure of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1;
FIG. 3 is an enlarged view of the point B in FIG. 1;
FIG. 4 is an enlarged view of the point C in FIG. 1;
in the figure: 1 is subbase layer, 2 is semi-rigid base layer, 3 is stress absorbing layer, 4 is lower surface layer, 5 is middle surface layer, 6 is waterproof bonding layer, 7 is noise reduction and drainage layer, 8 is enhancement layer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1 to 4, a noise reduction and drainage road surface structure is characterized in that: including road surface base, waterproof bonding layer 6, make an uproar drainage blanket 7 and enhancement layer 8 fall, waterproof bonding layer 6 is laid in road surface base top, and lower surface course 4 has been laid to waterproof bonding layer 6 top, and surface course 5 has been laid to lower surface course 4 top, and drainage blanket 7 of making an uproar is laid in 5 tops of surface course, and the drainage blanket 7 top of making an uproar falls in 8 lays in the enhancement layer.
Preferably, the pavement base comprises an underlayer 1, a semi-rigid base layer 2 and a stress absorption layer 3, wherein the semi-rigid base layer 2 is laid on the underlayer 1, and the stress absorption layer 3 is laid on the semi-rigid base layer 2.
Preferably, the subbase layer 1 is formed by paving graded gravel materials, and the thickness is 25-35 cm.
Preferably, the semi-rigid base layer 2 is formed by paving cement-stabilized macadam, and the thickness is 15-20 cm. The semi-rigid base layer 2 has high rigidity and strong load diffusion capacity, is not easy to generate ruts, and reduces the generation of cracks.
Preferably, the stress absorption layer 3 is formed by paving rubber asphalt macadam, the thickness is 15-20 cm, and the maximum grain size of the macadam is 30mm.
Preferably, the waterproof bonding layer 6 is made of one of modified asphalt, modified emulsified asphalt or rubber asphalt seal coat, and the modified emulsified asphalt is one of SBR modified emulsified asphalt, SBS high polymer modified emulsified asphalt and water-based high polymer modified emulsified asphalt. The waterproof bonding layer 6 can better bond the upper surface layer and the lower surface layer, has good waterproof performance, prevents the infiltration of moisture, and further protects the pavement structure layer.
Preferably, the lower layer 4 is formed by paving the AC-25 asphalt mixture, and the paving thickness of the lower layer 4 is 8-10 cm.
Preferably, the middle surface layer 5 is formed by paving an AC-20 asphalt mixture, and the paving thickness of the middle surface layer 5 is 4-6 cm.
Preferably, the noise reduction and drainage layer 7 is formed by paving large-pore asphalt concrete or rubber asphalt concrete material. The noise reduction and drainage layer 7 is a typical skeleton void structure, the dosage of coarse aggregates is about 85% of the total mass of the aggregates, and the contact area between the aggregates is reduced by about 25% of the stress of a contact point. Limestone mineral powder is preferably adopted as the mineral powder of the asphalt mixture of the noise reduction drainage layer 7, and the technical requirements are in accordance with the provisions of the current industry standard JTGF40 of the Highway asphalt pavement construction technical Specification. The high-temperature stability and the anti-flying performance of the mixture are improved, dry ground slaked lime powder or quicklime powder and cement can be used as a part of the filler, and the dosage of the dry ground slaked lime powder or quicklime powder and the cement is preferably 1 to 2 percent of the total amount of the mineral aggregate.
Preferably, the reinforcing layer 8 is formed by paving coarse aggregates and fine aggregates, the coarse aggregates are rock pulp broken stones, the particle size of the coarse aggregates is larger than 5mm, the fine aggregates are limestone stones, and the particle size of the fine aggregates is smaller than 2.2mm.
Regarding the optimum amount of bitumen: in the recommended grading range, three proportioning schemes are tried according to the expected target void ratio, so that the passing rate of a 2.36mm sieve pore is about 3 percent of the median range, namely, the use amount of asphalt is estimated according to the thickness of the asphalt film and the surface area of aggregate by using a theoretical calculation method, and different asphalt is calculated according to different film thicknesses; compacting and molding a Marshall test piece, and checking the volume index, wherein the volume index mainly indicates whether the void ratio can meet the requirement of the target void ratio; after the requirements are met, the asphalt dosage is changed according to 0.5 percent and 1 percent, and leakage analysis tests and flying tests are respectively carried out to determine that the optimal asphalt dosage is determined according to the asphalt dosage, the reverse bending point of the asphalt leakage analysis test is generally used as the optimal asphalt dosage, the leakage analysis dosage is generally not more than 0.8 percent (beaker method), and in the range, the result of the Marshall test is referred to, and the proper asphalt dosage is selected as the optimal asphalt dosage; and finally, performing performance test on the drainage noise reduction asphalt mixture, wherein the performance test comprises drainage noise reduction performance, water damage resistance performance, a flying test, a rutting test and the like.
The noise reduction function of the noise reduction and drainage asphalt concrete pavement is not only shown in the aspects of absorbing vehicle noise and eliminating pumping effect, but also can quickly and effectively drain accumulated water on the pavement in a wet pavement environment in rainy days, and reduce the noise pollution of vehicles in driving in rainy days.
After the noise test of the noise reduction and drainage concrete pavement test section, the large porosity and the communicating pores of the noise reduction and drainage asphalt concrete pavement can effectively absorb the pavement noise, eliminate the pumping effect between the tire and the pavement and reduce the noise pollution of the vehicle in running. Compared with the common AC-13 road surface, the noise reduction effect is better when the running speed of the vehicle is larger, the noise outside the car is reduced by 6dB and the noise inside the car is reduced by more than 3dB under the state that the car runs at 100 km/high speed. Under the condition of a wet road surface, the permeable asphalt concrete road surface can timely drain accumulated water on the road surface, so that the noise reduction effect is more obvious and reaches more than 8 dB. Therefore, the noise reduction effect of the noise reduction drainage type asphalt concrete pavement is obviously superior to that of common pavement materials such as AC-13 and the like, and the pavement is worth of being widely popularized and applied.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (9)
1. The utility model provides a drainage road surface structure of making an uproar falls which characterized in that: including road surface base, waterproof bonding layer (6), make an uproar drainage blanket (7) and enhancement layer (8) fall, waterproof bonding layer (6) are laid in road surface base top, surface course (4) have been laid down to waterproof bonding layer (6) top, surface course (5) have been laid down to surface course (4) top down, make an uproar drainage blanket (7) are laid in surface course (5) top down, drainage blanket (7) top of making an uproar falls is laid in enhancement layer (8).
2. A noise-reducing and water-draining road surface structure according to claim 1, characterized in that: the pavement base comprises an underlayer (1), a semi-rigid base layer (2) and a stress absorption layer (3), wherein the semi-rigid base layer (2) is laid above the underlayer (1), and the stress absorption layer (3) is laid above the semi-rigid base layer (2).
3. A noise-reducing and water-draining road surface structure as claimed in claim 2, wherein: the subbase layer (1) is formed by paving graded gravel materials, and the thickness is 25-35 cm.
4. A noise-reducing drainage road surface structure according to claim 2, characterized in that: the semi-rigid base layer (2) is formed by paving cement-stabilized macadam, and the thickness is 10-15 cm.
5. A noise-reducing and water-draining road surface structure as claimed in claim 2, wherein: the stress absorption layer (3) is formed by paving rubber asphalt macadam, the thickness is 15-20 cm, and the maximum grain size of the macadam is 30mm.
6. A noise-reducing and water-draining road surface structure according to claim 1, characterized in that: the waterproof bonding layer (6) is made of one of modified asphalt, modified emulsified asphalt or rubber asphalt seal coat, and the modified emulsified asphalt is one of SBR modified emulsified asphalt, SBS high polymer modified emulsified asphalt and water-based high polymer modified emulsified asphalt.
7. A noise-reducing and water-draining road surface structure according to claim 1, characterized in that: the lower surface layer (4) is formed by paving an AC-25 asphalt mixture, and the paving thickness of the lower surface layer (4) is 8-10 cm.
8. A noise-reducing and water-draining road surface structure according to claim 1, characterized in that: the middle surface layer (5) is formed by paving an AC-20 asphalt mixture, and the paving thickness of the middle surface layer (5) is 4-6 cm.
9. A noise-reducing and water-draining road surface structure according to claim 1, characterized in that: the noise-reduction and drainage layer (7) is formed by paving macroporous asphalt concrete or rubber asphalt concrete materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220862107.7U CN217556597U (en) | 2022-04-15 | 2022-04-15 | Noise-reduction drainage pavement structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220862107.7U CN217556597U (en) | 2022-04-15 | 2022-04-15 | Noise-reduction drainage pavement structure |
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| CN217556597U true CN217556597U (en) | 2022-10-11 |
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| CN202220862107.7U Active CN217556597U (en) | 2022-04-15 | 2022-04-15 | Noise-reduction drainage pavement structure |
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Address after: 041000 west of tujiapo village, Liucun Town, Yaodu District, Linfen City, Shanxi Province Patentee after: Shanxi Zhongrun Luke Technology Co.,Ltd. Address before: 041000 west of tujiapo village, Liucun Town, Yaodu District, Linfen City, Shanxi Province Patentee before: Shanxi Zhongrun Luke Science and Technology Co.,Ltd. |