CN108489599A - A kind of noise testing method of porous asphalt pavement - Google Patents
A kind of noise testing method of porous asphalt pavement Download PDFInfo
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- CN108489599A CN108489599A CN201810136853.6A CN201810136853A CN108489599A CN 108489599 A CN108489599 A CN 108489599A CN 201810136853 A CN201810136853 A CN 201810136853A CN 108489599 A CN108489599 A CN 108489599A
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- asphalt pavement
- porous asphalt
- noise reduction
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- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The invention discloses a kind of noise testing methods of porous asphalt pavement, choose equivalent continuous A sound level test point；Acoustic meter is installed in equivalent continuous A sound level test point；Porous asphalt pavement operation and environment equivalent continuous A sound level are calculated according to the data of acoustic meter acquisition；It chooses noise reduction and compares test point；In the noise reduction of porous asphalt pavement subscript regular inspection measuring car terminal is detected than detection starting point and noise reduction ratio；Acoustic meter is installed than test point in noise reduction；Acquire the ambient noise of porous asphalt pavement；Noise of the acquisition testing vehicle in porous asphalt pavement when driving；Calculate the noise reduction ratio of porous asphalt pavement.The present invention is detected suitable for porous asphalt pavement surface characteristic, by equivalent continuous A sound level to porous asphalt pavement and noise reduction than test the noise and the index that sound absorption degree is provided that porous asphalt pavement is generated with vehicle tyre can be evaluated.
Description
Technical field
The present invention relates to the technical field of performance test of porous asphalt pavement, especially a kind of noise of porous asphalt pavement
Test method.
Background technology
Porous asphalt pavement makees surface layer using Asphalt mix for open-graded friction course, rainfall is penetrated into drain function layer, and pass through
Rainwater is laterally discharged in layer, to eliminate the road table moisture film for bringing many driving detrimental effects, significantly improves rainy day driving
Safety, comfort.However, with the fast development of transportation and a large amount of universal, the automobile of porous asphalt pavement
Noise has been increasingly becoming the important pollution for influencing health of people life.It is generally believed that automobile noise is mainly made an uproar including tire/road surface
Sound, horn for vehicle noise and engine noise etc., wherein tire/road rumble accounts for the large percentage of automobile overall noise, with road
Engineering is directly related.
Currently, researchers make some attempts about the noise testing method of porous asphalt pavement, but its feasibility is still
The condition for waiting for further studying, and testing is difficult to control, and is easily interfered during the test by extraneous environmental noise, for draining
There is no simple to operation and effective methods for the noise testing of bituminous paving；Therefore, a kind of drainage asphalt road is invented
The noise testing method in face can provide foundation to study the performance test of porous asphalt pavement, have important practical significance.
Invention content
To solve problems of the prior art, the object of the present invention is to provide a kind of surveys of the noise of porous asphalt pavement
Method for testing, this method are detected suitable for porous asphalt pavement surface characteristic, pass through the equivalent continuous A sound level to porous asphalt pavement
And noise reduction than test the noise and the index that sound absorption degree is provided that porous asphalt pavement and vehicle tyre generate can be evaluated；
Equivalent continuous A sound level can be transformed front and back noise to old pavement and be analyzed and evaluated, and noise reduction ratio can be to creating porous asphalt pavement
Or the noise reduction capability of old porous asphalt pavement is evaluated.
To achieve the above object, the technical solution adopted by the present invention is：A kind of noise testing method of porous asphalt pavement,
Include the following steps：
A, multigroup equivalent continuous A sound level detection group is chosen at a certain distance；Every group of equivalent continuous A sound level detection group includes two
A equivalent continuous A sound level test point, two equivalent continuous A sound level test points are respectively positioned on outside drainage asphalt road, two etc.
It is respectively 0.2m and 20m to imitate distance of the continuous A sound level detections point apart from drainage asphalt road curb, and equivalent continuous A sound level is examined
The height of measuring point is higher 0.7m than the road elevation of porous asphalt pavement；
B, acoustic meter is installed in equivalent continuous A sound level test point；
C, porous asphalt pavement operation and environment equivalent continuous A sound level L are calculated according to the data of acoustic meter acquisitioneq；Wherein,LAiFor i-th of effective equivalent continuous A sound level of acquisition, n is the effective equivalent of acquisition
The quantity of continuous A sound levels；
D, multiple noise reductions are chosen at a certain distance compare test point；Each noise reduction is respectively positioned on drainage asphalt road than test point
Outside road, each noise reduction is 2m than the distance between test point and drainage asphalt road test track, and noise reduction is higher than test point
Degree is higher 0.7m than the road elevation of porous asphalt pavement；
E, in the noise reduction of porous asphalt pavement subscript regular inspection measuring car terminal is detected than detection starting point and noise reduction ratio；By detection
It is respectively to detect that the direction of traffic of vehicle, which demarcates the position apart from noise reduction than 500m before test point and noise reduction than 500m after test point,
Noise reduction of the vehicle on porous asphalt pavement detects terminal than detection starting point and noise reduction ratio；
F, acoustic meter is installed than test point in noise reduction；
G, the ambient noise of porous asphalt pavement is acquired；
H, noise of the acquisition testing vehicle in porous asphalt pavement when driving；Detection vehicle drives to noise reduction than detection starting point
Enter cruise driving mode afterwards；
I, the noise reduction ratio LE of porous asphalt pavement is calculatedx-0.5x；Wherein,
VxFor maximum speed as defined in porous asphalt pavement, LAxIt is to detect vehicle with detection vehicle, draining when maximum speed cruise
The equivalent continuous A sound level of bituminous paving and environment, LA0For collected ambient noise in step g, LA0.5xIt is to detect vehicle with most
The equivalent continuous A sound level of vehicle, porous asphalt pavement and environment is detected when small speed cruise.
In said program, when choosing equivalent continuous A sound level test point and noise reduction ratio test point, environmental background noise should be avoided
Complicated section, and on porous asphalt pavement equivalent continuous A sound level detections point and noise reduction than 300 meters of models before and after test point
It encloses interior accessible.
When detecting the equivalent continuous A sound level of porous asphalt pavement, detection time chooses 11:00-12:00、16:00-17:
00、23:00-24:00、03:00-04:00, and each equivalent continuous A sound level test point at least detects 3 times or more, by making an uproar
When the data of sound instrument acquisition calculate equivalent continuous A sound level, noise when increasing suddenly horn for vehicle noise and engine power
So that the data of test data moment increase 3dB or more is given up, ensures the accuracy of calculated equivalent continuous A sound level；
It is worth noting that, when detection is analyzed in the comparison of the equivalent A-weighted sound pressure level for front and back porous asphalt pavement is transformed, detect twice
External condition should be consistent, such as the climatic factor etc. when detection time, detection.
When detecting the noise reduction ratio of porous asphalt pavement, detection time chooses 03:00-04:00 or porous asphalt pavement row
It sails the vehicle less period, and each noise reduction at least detects 3 times or more than test point, when detection vehicle is in porous asphalt pavement
On when driving, when noise meter increases 3dB suddenly by plateau noise, detection vehicle distances test point distance must not be short
In 300m, length of the noise reduction than detecting starting point should be increased as shorter than 300m.Detection vehicle be driven out to noise reduction than detection spot noise by
300m must not be shorter than by gradually restoring the distance of plateau, should extend length of the noise reduction than detecting terminal as shorter than 300m；It is worth
It is noted that for be transformed the noise reduction of front and back porous asphalt pavement than comparison analyze detection when, the extraneous item that detects twice
Part should be consistent, such as the climatic factor etc. when detection time, detection.
As advanced optimizing for said program, in step a, equivalent continuous A sound level detection group described in two adjacent groups it
Between spacing be 5km；
In step d, the two neighboring noise reduction is 5km than the spacing between test point.
Rational spacing can ensure institute between porous asphalt pavement equivalent continuous A sound level detection group and noise reduction ratio test point
The precision of equivalent continuous A sound level and the noise reduction ratio measured.
As advanced optimizing for said program, in the step h, maximum velocity ratio row when detection constant speed of vehicle cruises
The small 10km/h of maximum speed as defined in bituminous grout road surface, minimum speed when detection constant speed of vehicle cruises are that porous asphalt pavement is advised
The half of fixed maximum speed.For the vehicle travelled on porous asphalt pavement, when the velocity potential of detection constant speed of vehicle cruise
The speed of most vehicles when driving on this road can be most reacted when in this speed interval, as detection constant speed of vehicle
The speed of cruise, the case where can making the data finally analyzed close to vehicle in actual travel on road surface, can be more true anti-
The noiseproof feature of porous asphalt pavement should be gone out.
As advanced optimizing for said program, in the step g, the time of the ambient noise of porous asphalt pavement is acquired
More than or equal to 2min.Before starting detection vehicle, the time of continuous acquisition porous asphalt pavement ambient noise is not less than 2min
It is adequately representative to can guarantee that acquired ambient noise has, last calculated noise reduction can be made than precision higher.
As advanced optimizing for said program, the test scope of the sound pressure level of the acoustic meter is 30dB-130dB, point
Resolution is 0.1dB, error range 0.1dB, and sample frequency is more than 10 times/s.The test scope of acoustic meter is wide, and precision is high, can
Further increase the precision of the equivalent continuous A sound level finally analyzed and noise reduction ratio.
The beneficial effects of the invention are as follows：
1, the present invention is suitable for the detection of porous asphalt pavement surface characteristic, passes through the equivalent continuous A to porous asphalt pavement
Sound level and noise reduction than test the noise and sound absorption degree is provided that porous asphalt pavement is generated with vehicle tyre can be evaluated
Index；Equivalent continuous A sound level can be transformed front and back noise to old pavement and be analyzed and evaluated, and noise reduction ratio can be to creating drainage asphalt
The noise reduction capability of road surface or old porous asphalt pavement is evaluated.
2, porous asphalt pavement equivalent continuous A sound level detection group and noise reduction can be protected than the spacing between test point for 5km
The precision of card measured equivalent continuous A sound level and noise reduction ratio.
3, the small 10km/h of maximum speed as defined in the maximum velocity ratio porous asphalt pavement when cruise of detection constant speed of vehicle, inspection
Minimum speed when measuring car cruise is the half of maximum speed as defined in porous asphalt pavement, on drainage asphalt road
The vehicle travelled on face can most react on this road when the speed for detecting constant speed of vehicle cruise is located in this speed interval
The speed of most vehicles when driving can make the data finally analyzed close as the speed of detection constant speed of vehicle cruise
The case where vehicle is in actual travel on road surface can more really reflect the noiseproof feature of porous asphalt pavement.
4, before starting detection vehicle, the time of continuous acquisition porous asphalt pavement ambient noise can protect not less than 2min
The acquired ambient noise of card has adequately representativeness, and last calculated noise reduction can be made than precision higher.
5, the test scope of acoustic meter is wide, and precision is high, can further improve the equivalent continuous A sound level finally analyzed and drop
Make an uproar than precision.
Description of the drawings
Fig. 1 is the flow chart of the noise testing method of porous asphalt pavement of the embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment
In one of the embodiments, as shown in Figure 1, a kind of noise testing method of porous asphalt pavement, including it is following
Step：
A, multigroup equivalent continuous A sound level detection group is chosen at a certain distance；Every group of equivalent continuous A sound level detection group includes two
A equivalent continuous A sound level test point, two equivalent continuous A sound level test points are respectively positioned on outside drainage asphalt road, two etc.
It is respectively 0.2m and 20m to imitate distance of the continuous A sound level detections point apart from drainage asphalt road curb, and equivalent continuous A sound level is examined
The height of measuring point is higher 0.7m than the road elevation of porous asphalt pavement；
B, acoustic meter is installed in equivalent continuous A sound level test point；
C, porous asphalt pavement operation and environment equivalent continuous A sound level L are calculated according to the data of acoustic meter acquisitioneq；Wherein,LAiFor i-th of effective equivalent continuous A sound level of acquisition, n is the effective equivalent of acquisition
The quantity of continuous A sound levels；
D, multiple noise reductions are chosen at a certain distance compare test point；Each noise reduction is respectively positioned on drainage asphalt road than test point
Outside road, each noise reduction is 2m than the distance between test point and drainage asphalt road test track, and noise reduction is higher than test point
Degree is higher 0.7m than the road elevation of porous asphalt pavement；
E, in the noise reduction of porous asphalt pavement subscript regular inspection measuring car terminal is detected than detection starting point and noise reduction ratio；By detection
It is respectively to detect that the direction of traffic of vehicle, which demarcates the position apart from noise reduction than 500m before test point and noise reduction than 500m after test point,
Noise reduction of the vehicle on porous asphalt pavement detects terminal than detection starting point and noise reduction ratio；
F, acoustic meter is installed than test point in noise reduction；
G, the ambient noise of porous asphalt pavement is acquired；
H, noise of the acquisition testing vehicle in porous asphalt pavement when driving；Detection vehicle drives to noise reduction than detection starting point
Enter cruise driving mode afterwards；
I, the noise reduction ratio LE of porous asphalt pavement is calculatedx-0.5x；Wherein,
VxFor maximum speed as defined in porous asphalt pavement, LAxIt is to detect vehicle with detection vehicle, draining when maximum speed cruise
The equivalent continuous A sound level of bituminous paving and environment, LA0For collected ambient noise in step g, LA0.5xIt is to detect vehicle with most
The equivalent continuous A sound level of vehicle, porous asphalt pavement and environment is detected when small speed cruise.
In said program, when choosing equivalent continuous A sound level test point and noise reduction ratio test point, environmental background noise should be avoided
Complicated section, and on porous asphalt pavement equivalent continuous A sound level detections point and noise reduction than 300 meters of models before and after test point
It encloses interior accessible.
When detecting the equivalent continuous A sound level of porous asphalt pavement, detection time chooses 11:00-12:00、16:00-17:
00、23:00-24:00、03:00-04:00, and each equivalent continuous A sound level test point at least detects 3 times or more, by making an uproar
When the data of sound instrument acquisition calculate equivalent continuous A sound level, noise when increasing suddenly horn for vehicle noise and engine power
So that the data of test data moment increase 3dB or more is given up, ensures the accuracy of calculated equivalent continuous A sound level；
It is worth noting that, when detection is analyzed in the comparison of the equivalent A-weighted sound pressure level for front and back porous asphalt pavement is transformed, detect twice
External condition should be consistent, such as the climatic factor etc. when detection time, detection.
When detecting the noise reduction ratio of porous asphalt pavement, detection time chooses 03:00-04:00 or porous asphalt pavement row
It sails the vehicle less period, and each noise reduction at least detects 3 times or more than test point, when detection vehicle is in porous asphalt pavement
On when driving, when noise meter increases 3dB suddenly by plateau noise, detection vehicle distances test point distance must not be short
In 300m, length of the noise reduction than detecting starting point should be increased as shorter than 300m.Detection vehicle be driven out to noise reduction than detection spot noise by
300m must not be shorter than by gradually restoring the distance of plateau, should extend length of the noise reduction than detecting terminal as shorter than 300m；It is worth
It is noted that for be transformed the noise reduction of front and back porous asphalt pavement than comparison analyze detection when, the extraneous item that detects twice
Part should be consistent, such as the climatic factor etc. when detection time, detection.
In another embodiment, in step a, between equivalent continuous A sound level detection group described in two adjacent groups between
Away from for 5km；
In step d, the two neighboring noise reduction is 5km than the spacing between test point.
Rational spacing can ensure institute between porous asphalt pavement equivalent continuous A sound level detection group and noise reduction ratio test point
The precision of equivalent continuous A sound level and the noise reduction ratio measured.
In another embodiment, in the step h, maximum velocity ratio drainage asphalt when detection constant speed of vehicle cruises
The small 10km/h of maximum speed as defined in road surface, detection constant speed of vehicle cruise when minimum speed be porous asphalt pavement as defined in most
The half of high speed.For the vehicle travelled on porous asphalt pavement, when the speed of detection constant speed of vehicle cruise is located at this
The speed of most vehicles when driving on this road can be most reacted when in speed interval, as detection constant speed of vehicle cruise
Speed, the case where can making the data finally analyzed close to vehicle in actual travel on road surface, can the more true row of reflecting
The noiseproof feature on bituminous grout road surface.
In another embodiment, in the step g, acquire the ambient noise of porous asphalt pavement time be more than etc.
In 2min.Before starting detection vehicle, the time of continuous acquisition porous asphalt pavement ambient noise can guarantee not less than 2min
The ambient noise acquired has adequately representativeness, and last calculated noise reduction can be made than precision higher.
In another embodiment, the test scope of the sound pressure level of the acoustic meter is 30dB-130dB, and resolution ratio is
0.1dB, error range 0.1dB, and sample frequency is more than 10 times/s.The test scope of acoustic meter is wide, and precision is high, can be further
Improve the precision of the equivalent continuous A sound level and noise reduction ratio that finally analyze.
Specific implementation mode of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.
Claims (5)
1. a kind of noise testing method of porous asphalt pavement, which is characterized in that include the following steps：
A, multigroup equivalent continuous A sound level detection group is chosen at a certain distance；Every group of equivalent continuous A sound level detection group includes two etc.
Continuous A sound level detections point is imitated, two equivalent continuous A sound level test points are respectively positioned on outside drainage asphalt road, two equivalent companies
Continuous distance of the A sound level detections point apart from drainage asphalt road curb is respectively 0.2m and 20m, and equivalent continuous A sound level test point
Height it is higher 0.7m than the road elevation of porous asphalt pavement；
B, acoustic meter is installed in equivalent continuous A sound level test point；
C, porous asphalt pavement operation and environment equivalent continuous A sound level L are calculated according to the data of acoustic meter acquisitioneq；Wherein,LAiFor i-th of effective equivalent continuous A sound level of acquisition, n is the effective equivalent of acquisition
The quantity of continuous A sound levels；
D, multiple noise reductions are chosen at a certain distance compare test point；Each noise reduction is respectively positioned on drainage asphalt road than test point
Outside, each noise reduction is 2m than the distance between test point and drainage asphalt road test track, and noise reduction is than the height of test point
It is higher 0.7m than the road elevation of porous asphalt pavement；
E, in the noise reduction of porous asphalt pavement subscript regular inspection measuring car terminal is detected than detection starting point and noise reduction ratio；By detection vehicle
Direction of traffic to demarcate position apart from noise reduction than 500m before test point and noise reduction than 500m after test point be respectively to detect vehicle
Noise reduction on porous asphalt pavement detects terminal than detection starting point and noise reduction ratio；
F, acoustic meter is installed than test point in noise reduction；
G, the ambient noise of porous asphalt pavement is acquired；
H, noise of the acquisition testing vehicle in porous asphalt pavement when driving；It is more laggard than detection starting point that detection vehicle drives to noise reduction
Enter cruise driving mode；
I, the noise reduction ratio LE of porous asphalt pavement is calculatedx-0.5x；Wherein,VxFor
Maximum speed as defined in porous asphalt pavement, LAxIt is to detect vehicle with detection vehicle, drainage asphalt when maximum speed cruise
The equivalent continuous A sound level on road surface and environment, LA0For collected ambient noise in step g, LA0.5xIt is that detection vehicle is fast with minimum
The equivalent continuous A sound level of detection vehicle, porous asphalt pavement and environment when spending cruise.
2. the noise testing method of porous asphalt pavement according to claim 1, which is characterized in that
In step a, the spacing between equivalent continuous A sound level detection group described in two adjacent groups is 5km；
In step d, the two neighboring noise reduction is 5km than the spacing between test point.
3. the noise testing method of porous asphalt pavement according to claim 1, which is characterized in that in the step h, inspection
The small 10km/h of maximum speed as defined in maximum velocity ratio porous asphalt pavement when measuring car cruise, detection constant speed of vehicle patrol
The minimum speed of endurance is the half of maximum speed as defined in porous asphalt pavement.
4. the noise testing method of porous asphalt pavement according to claim 1, which is characterized in that in the step g, adopt
The time of the ambient noise of integrate draining bituminous paving is more than or equal to 2mi n.
5. the noise testing method of porous asphalt pavement according to claim 1, which is characterized in that the sound of the acoustic meter
The test scope arbitrarily downgraded be 30dB-130dB, resolution ratio 0.1dB, error range 0.1dB, and sample frequency be more than 10 times/
s。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110967401A (en) * | 2019-12-27 | 2020-04-07 | 招商局公路信息技术（重庆）有限公司 | Method suitable for evaluating driving comfort of highway asphalt pavement |
| CN111931268A (en) * | 2020-06-30 | 2020-11-13 | 交通运输部公路科学研究所 | Design method for noise reduction function of large-gap asphalt pavement |
| CN112014551A (en) * | 2020-07-22 | 2020-12-01 | 四川科路泰交通科技有限公司 | Automatic selection control method and system for liquid storage tank for asphalt test |
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| CN112014551A (en) * | 2020-07-22 | 2020-12-01 | 四川科路泰交通科技有限公司 | Automatic selection control method and system for liquid storage tank for asphalt test |
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