CN103712909B - Surface friction coefficient and the synchronous detecting method of frictional noise - Google Patents
Surface friction coefficient and the synchronous detecting method of frictional noise Download PDFInfo
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- CN103712909B CN103712909B CN201410014219.7A CN201410014219A CN103712909B CN 103712909 B CN103712909 B CN 103712909B CN 201410014219 A CN201410014219 A CN 201410014219A CN 103712909 B CN103712909 B CN 103712909B
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Abstract
The invention discloses the synchronous detecting method of a kind of surface friction coefficient and frictional noise.The method includes the moistening road surface to be measured of (1) watering, (2) portable pendulum tester is used, the coefficient of friction (BPN) on test road surface, (3) use sound meter, frictional noise (dB) between synchronism detection portable pendulum tester sheet rubber and road table texture, (4) use software that gained noise is carried out spectrum analysis.The coefficient of friction on synchronism detection road surface of the present invention and frictional noise, on the premise of ensureing antiskid safety, it is thus achieved that the road table texture of more excellent noise reduction, it is provided that means of testing.
Description
Technical field
The present invention relates to the synchronous detecting method of a kind of surface friction coefficient and frictional noise.
Background technology
The coefficient of friction on road surface is the important indicator affecting road surface safety.Modern Traffic movement requirement safety,
Fast, economy, environmental protection.In road project, it is necessary to first consider its security performance, i.e. must assure that
The antiskid performance on road surface.But, if the unilateral antiskid performance pursuing road surface may be served negative by band
Impact, as excessive in road surface frictional resistance, will greatly increase fuel oil consumption, accelerate tire wear, increase tire/
Road rumble etc..So, suitable coefficient of friction should be selected on the premise of guaranteeing safety.
Traffic noise has become as the widest a kind of environment noise of impact, along with vehicles number sharply increases,
Road traffic noise pollutes day by day serious, disturbs urbanite and the orthobiosis of Highways ' resident.Road
Traffic noise is mainly derived from engine noise, Induction and exhaust noises, tire/road rumble and aerodynamic and makes an uproar
Sound etc..When car speed is more than about 50km/h, tire/road rumble becomes the main source of noise.Rub
Wipe noise and occupy larger specific gravity in tire/road rumble.
Under normal circumstances, in order to obtain bigger antiskid performance, it is generally desirable to road table is the most rough more good；And in order to
Obtain the road surface of more " quiet ", it is generally desirable to road table is the most rough the best.Therefore, in order to obtain antiskid performance
And the balance between anti-acoustic capability, it is provided that a kind of synchronism detection road table coefficient of friction shows with the method for testing of frictional noise
Obtain especially necessary.
At present, the coefficient of friction of road pavement has various test, such as portable pendulum tester, dynamic rotary type coefficient of friction
Tester, monocycly or dicycly cornering ratio test system measurement surface friction coefficient, portable pendulum tester is to put into
Test equipment minimum, that use is the easiest.
The method of testing of road rumble has: (1) far field test method: CPB method (method is passed through in control), by
Installing mike at trackside certain distance and height, what the controlled vehicle that test certain speed travels was sent makes an uproar
Sound；SPB method (statistics passes through method), is also by installing mike at trackside certain distance and height, surveying
The noise that the vehicle that examination certain speed travels is sent.Unlike CPB method, in SPB method, vehicle is true
Wagon flow, and the testing time is longer；(2) near field test method: CPX method, disappears by being arranged on trailer-type approximation
Mike in tone chamber, the noise between test tire/road surface；OBSI method, by being arranged on tire front and rear edges
Mike, test tire/road surface between noise.
Above-mentioned friction coefficient testing method can only test the coefficient of friction on road surface, it is impossible to the corresponding friction of test is made an uproar
Sound；Above-mentioned noise testing method can not test the coefficient of friction on road surface.If above two method of testing is tied
Altogether, for coefficient of friction and the frictional noise on synchro measure road surface, (will reach to the optimization of road table texture
Reduce noise on the premise of meeting antiskid as far as possible) a good research means is provided.
The present invention incites somebody to action " portable pendulum tester measures surface friction coefficient test method " and " sound meter test pavement friction is made an uproar
Sound test method ", organically combine, can the coefficient of friction on synchronism detection road surface and frictional noise, for building
Vertical surface friction coefficient provides means of testing with frictional noise relation, optimization road table texture.
Summary of the invention
Goal of the invention: not enough in order to overcome present in existing method of testing, the present invention provides a kind of synchronism detection
The method of testing of surface friction coefficient and frictional noise, for selecting not only to ensure antiskid performance but also the road surface of noise reduction as far as possible
Texture provides test method.
Technical scheme: for solving above-mentioned technical problem, the invention discloses a kind of pavement skid resistance (coefficient of friction)
Synchronous detecting method with noise (frictional noise).The method uses simple test instrunment--portable pendulum tester harmony
Coefficient of friction (BPN) when level meter--synchronism detection portable pendulum tester sheet rubber and the friction of road table and frictional noise (dB),
And noise is divided, in order to set up surface friction coefficient and frictional noise relation, optimize pavement texture and (make
On the premise of must ensureing antiskid performance, frictional noise is minimum).
As preferably, the described sound meter for testing friction noise should possess division function.
The surface friction coefficient that the present invention provides and the synchronous detecting method of frictional noise, comprise the following steps:
1) thermometer measure temperature is used, and moistening road surface to be measured of sprinkling water；
2) according in " highway subgrade road surface on-the-spot test code " JTGE60-2008, " portable pendulum tester measures road surface
Test method of friction coefficient (T0964-2008) ", use the coefficient of friction (BPN) on portable pendulum tester test drip road surface.
Sheet rubber is changed in time by related request.
3) when background noise is less than 50dB, away from coefficient of friction measuring point horizontal 10～15cm, vertical 10～15cm
Place, hand-held sound meter, the frictional noise (dB) between synchronism detection portable pendulum tester sheet rubber and pavement texture.
4) use software that gained noise is carried out spectrum analysis.
Data syn-chronization: application claims ensures that coefficient of friction (BPN) is correct with the data of frictional noise (dB)
Corresponding.During test, background noise is not more than 50dB.When portable pendulum tester sheet rubber produces friction with pavement texture,
In sound meter, the noise data of storage has phenomenon of significantly uprushing, and noise-time changing curve forms sharp wave
Peak, this crest is corresponding frictional noise (dB).
Beneficial effect:
(1) present invention uses portable pendulum tester and sound meter, can be between synchronism detection portable pendulum tester sheet rubber and road table
Coefficient of friction and frictional noise, and frictional noise can be carried out spectrum analysis, the optimization for road table texture provides examination
Test means；
(2) synchronous detecting method of the present invention, it is possible to the coefficient of friction of test mixing material test specimen and frictional noise；
(3) present invention use instrument--portable pendulum tester and sound meter, simple equipments, put into little.
Accompanying drawing explanation
Fig. 1 is instrument used in the present invention；
Fig. 2 is coefficient of friction measuring point 2 and frictional noise measuring point 3 position view in the present invention.A) measuring point plane
Arrange schematic diagram；B) measuring point facade arranges schematic diagram.
In figure: 1 road surface to be measured；2 coefficient of friction measuring points；3 frictional noise measuring points；4 portable pendulum testers.
Concrete example
The coefficient of friction of this example and the point position of frictional noise are respectively measuring point 2 and measuring point 3(Fig. 2), its
Middle coefficient of friction measuring point 2 and the lateral separation of frictional noise measuring point 3 are 10～15cm, vertical distance be 10～
15cm；A length of the 13 of coefficient of friction measuring point 2～15cm, the width of measuring point 2 is 3～4cm.
The coefficient of friction of this example and the synchronous detecting method of frictional noise, comprise the steps of
1) use thermometer record temperature, be accurate to 0.1 DEG C.
2) determine the coefficient of friction measuring point 2 on road surface 1, and it is moistening to sprinkle water；
3) according in " highway subgrade road surface on-the-spot test code " JTGE60-2008, " portable pendulum tester measures road surface
Test method of friction coefficient (T0964-2008) ", use the coefficient of friction of portable pendulum tester test road surface measuring point 2
(BPN).
4) when background noise is less than 50dB, sound meter, at measuring point 3, synchronism detection portable pendulum tester rubber are used
Frictional noise (dB) between film and road table texture.
5) use software that gained noise is carried out spectrum analysis.
6) if coefficient of friction (BPN) excursion that on same road surface, three measuring points record is more than 3, or synchronize
Three frictional noise value (dB) excursions that test obtains more than 1, then should check the reason come into question,
And repeat above step, until meet above-mentioned requirements.
Result of the test
When temperature is-1.0 DEG C, the typical case coefficient of friction on road surface and the result of the test of frictional noise are shown in Table 1:
The coefficient of friction on table 1 typical case road surface and frictional noise
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
The description of " concrete example " or " some examples " etc. means to combine the concrete spy of this embodiment or example description
Levy, structure, material or feature are contained at least one embodiment or the example of the present invention.In this specification
In, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, description
Specific features, structure, material or feature can be with properly in any one or more embodiments or example
Mode combine.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that:
These embodiments can be carried out in the case of without departing from the principle of the present invention and objective multiple change, amendment,
Replacing and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (6)
1. a surface friction coefficient and the synchronous detecting method of frictional noise, it is characterised in that:
Use the coefficient of friction on portable pendulum tester test road surface；
The noise produced when using sound meter record portable pendulum tester sheet rubber and the friction of road table texture, carries out spectrum analysis to it, obtains road table texture noise reduction optimized initial value；
According to the crest location in noise-time changing curve, synchronize coefficient of friction and frictional noise data.
2. as claimed in claim 1 surface friction coefficient and the synchronous detecting method of frictional noise, it is characterised in that the described frictional noise measuring point lateral separation away from coefficient of friction measuring point is 10 to 15 centimetres, vertical distance is 10 to 15 centimetres.
3. surface friction coefficient as claimed in claim 1 and the synchronous detecting method of frictional noise, it is characterised in that this method of testing is measured on wet road surface or measured on dry pavement.
4. surface friction coefficient as claimed in claim 1 and the synchronous detecting method of frictional noise, it is characterised in that real time record temperature during test.
5. surface friction coefficient as claimed in claim 1 and the synchronous detecting method of frictional noise, it is characterised in that background noise during test is not more than 50dB.
6. surface friction coefficient as claimed in claim 2 and the synchronous detecting method of frictional noise, it is characterised in that: described frictional noise measuring point is described sound meter hand position, and described coefficient of friction measuring point is described portable pendulum tester sheet rubber and road table texture frictional position.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108489599B (en) * | 2018-02-09 | 2020-08-25 | 四川科路泰交通科技有限公司 | Noise testing method for drainage asphalt pavement |
| US20190362510A1 (en) * | 2018-05-24 | 2019-11-28 | Lu Sun | Method and system for evaluating friction coefficient and skid resistence of a surface |
| CN110823802B (en) * | 2019-11-22 | 2022-03-08 | 苏交科集团股份有限公司 | Device and method for testing ice melting effect and noise of asphalt mixture |
| CN111418958B (en) * | 2020-04-27 | 2021-11-16 | 高铁检测仪器（东莞）有限公司 | Sole noise testing machine and testing method |
| CN117074291B (en) * | 2023-10-17 | 2024-01-02 | 西南交通大学 | Non-contact texture friction prediction method |
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| CN101535769A (en) * | 2006-09-06 | 2009-09-16 | 欧陆汽车有限责任公司 | Method and device for monitoring the noise from a sensor |
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| WO2005116638A1 (en) * | 2004-05-27 | 2005-12-08 | Better Loggers Pty Ltd | Apparatus for testing a tyre and/or road surface |
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| CN101535769A (en) * | 2006-09-06 | 2009-09-16 | 欧陆汽车有限责任公司 | Method and device for monitoring the noise from a sensor |
| CN101614642A (en) * | 2009-07-10 | 2009-12-30 | 同济大学 | Asphalt mixed material road face abrasion simulator and method of testing thereof |
| CN102998365A (en) * | 2012-12-03 | 2013-03-27 | 哈尔滨工业大学 | Micro-surfacing mixture noise indoor-test method |
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