CN107818237A - The evaluation method of Damages of Asphalt Road Surface situation - Google Patents
The evaluation method of Damages of Asphalt Road Surface situation Download PDFInfo
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Abstract
This case is related to a kind of evaluation method of Damages of Asphalt Road Surface situation, comprises the following steps：1) road surface breakage data are gathered；2) road surface transverse crack evaluation number TCEI is calculated；3) pavement patching status score PPCI is calculated；4) road surface deterioration extent indices P SCI is calculated；5) attribute weight of three indexes is calculated using analytic hierarchy process (AHP)；6) the grade weight of three indexes is calculated using Information Entropy；7) attribute weight in three indexes and grade weight calculation obtain comprehensive weight；8) pavement distress indices P DCI evaluation model is built；The evaluation result of pavement distress is obtained according to the value for the PDCI being calculated.The present invention establishes the evaluation method of the Damages of Asphalt Road Surface situation of variable synthesis evaluation assessment, and this method is combined the changeable weight for calculating each evaluation index using analytic hierarchy process (AHP) and E-government Network, and evaluation result has more accuracy.
Description
Technical field
The present invention relates to road engineering technical field, and in particular to a kind of evaluation method of Damages of Asphalt Road Surface situation.
Background technology
Road surface transverse crack evaluation number TCEI, pavement patching status score PPCI and road surface deterioration extent index
Tri- sub-indicators of PSCI can objectively reflect the damaged condition of certain class disease of asphalt pavement of highway, and to instruct
The formulation of Decision making for pavement maintenance scheme.However, in maintenance of surface performance rating, except the individual event of pavement damage to be compared is damaged
Outside situation, it is also necessary to the integrated status of pavement damage is evaluated, to macroscopic evaluation pavement damage situation.How road pavement damages shape
Condition carries out overall merit, is still the key issue that current road maintenance administrative staff need to solve.
Pavement damage situation overall merit is that a kind of comprehensive multi-index judges problem.Any multiple index evaluation system is required for
The weight of each subitem evaluation index is determined, different weights corresponds to different evaluation results, so reasonably determining evaluation index
Weight be all highly important to any evaluation method.In some cases, the knowledge and experience can for judging expert are relied on
Determine weight.And in some cases, expert can not weigh the mutual significance level of each evaluation index by rule of thumb.Current domestic road
Face use limits are evaluated using often power more, i.e., no matter how the desired value of evaluation index changes, and the weight of index is constant
's.For Pavement Performance generally speaking, when the levels characteristic of some index is particularly evident, still judged using often power,
It is possible to be neutralized by other indexs, so as to reduce the accuracy of judge.Therefore, the objective standard of index in itself, power should be sought
Ask and objectively determine weight.
When evaluating asphalt pavement of highway deterioration extent, due to being related to three single indexs, when wherein
Which kind of during some evaluation index especially severe, no matter using evaluation model, it is likely to by the slight index of other degree
With make the order of severity of evaluation system reduce, lose the justice of evaluation.
The content of the invention
For technical problem present in prior art, this case provides a kind of evaluation method of Damages of Asphalt Road Surface situation,
It is by taking variable synthesis to evaluate the weight of each single index, it is possible to achieve index weights with the desired value order of severity increasing
Add and increase, avoid the phenomenon because being neutralized serious plant disease using fixed weight so that evaluation result is more accurate.
To achieve the above object, this case is achieved through the following technical solutions：
A kind of evaluation method of Damages of Asphalt Road Surface situation, wherein, comprise the following steps：
1) road surface breakage data are gathered；
2) the road surface breakage data are based on, calculate transverse crack spacing TCS and transverse crack penetration degree TWR, and with
Evaluation index of the two indexs as road surface transverse crack, calculate road surface transverse crack evaluation number TCEI；
3) the road surface breakage data are based on, calculate pavement patching status score PPCI；
4) the road surface breakage data are based on, calculate road surface deterioration extent indices P SCI；
5) analytic hierarchy process (AHP) in subjective weighting method is used to calculate the attribute weight for obtaining TCEI, PPCI and PSCI respectively
ω′1、ω′2With ω '3；
6) Information Entropy in objective weighted model is used to calculate the grade weights omega for obtaining TCEI, PPCI and PSCI respectively "1、
ω"2With ω "3；
7) attribute weight in TCEI, PPCI and PSCI and grade weight be calculated respectively TCEI, PPCI and
PSCI comprehensive weight ω1、ω2And ω3；
8) pavement distress indices P DCI evaluation model is built, the expression formula of the evaluation model is：
The evaluation result of pavement distress is obtained according to the value for the PDCI being calculated.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, transverse crack spacing in step 2)
TCS calculation formula is：
Wherein, L is the length in evaluation section；TCN is the transverse crack sum in evaluation section.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, transverse crack penetration degree in step 2)
TWR calculation formula is：
Wherein, TCL is transverse crack evaluation length, and TCL=TCTL/TCN, TCTL are the total length of transverse crack, TCN
For the transverse crack sum in evaluation section；B is lane width.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, road surface transverse crack is commented in step 2)
Valency index TCEI calculation formula is：
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, pavement patching situation refers in step 3)
Number PPCI expression formula be：
PPCI=100-15.634 × PPR0.4032；
Wherein,It is pavement patching rate, CiFor the area of i-th of pavement patching, C is
The gross area on road surface to be measured, n are repairing quantity.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, step 4) road surface deterioration extent
Indices P SCI expression formula is：
PSCI=100-15.0 × SDR0.412；
Wherein,It is surface fracture rate, BiFor the area of i-th of road surface breakage, B is
The area on road surface to be measured；miFor the weight of the i-th class pavement damage, g is the types of damage sum comprising damaged condition.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, ω '1=0.2558, ω '2=
0.1022, ω '3=0.6421.
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, step 6) the middle grade weight
Computational methods are：
I) determination is evaluated the feature rate of specific gravity of object
For n evaluation object, m evaluation index, i-th of feature rate of specific gravity P for being evaluated object under jth item indexij
Expression formula be：
Wherein, xijThe matrix formed for the evaluation index value of bituminous paving；
II) entropy of evaluation index is determined
The entropy h of jth item evaluation indexjExpression formula be：
III) coefficient of variation of evaluation index is determined
The coefficient of variation g of jth item evaluation indexjExpression formula be：
gj=1-hj；
IV) the grade weight of evaluation index is determined
The grade weights omega of jth item evaluation indexj" expression formula be：
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, comprehensive weight in the step 7)
Expression formula is：
Wherein, ω 'iFor the attribute weight of i-th of single index；ωi" for the grade weight of i-th of single index, n is finger
Mark sum.
The beneficial effects of the invention are as follows：
(1) not objectivity of the present invention for existing evaluation method in weight determination, establishes variable synthesis and comments first
The evaluation method of the Damages of Asphalt Road Surface situation of valency method, this method utilize analytic hierarchy process (AHP) and entropy weight system from measured data
Number method is combined the changeable weight for calculating each evaluation index so that the weight of each evaluation index has more objectivity, evaluation knot
Fruit has more accuracy, and the evaluation of the road pavement damaged condition order of severity plays directive function；
(2) failure analysis (FA) evaluation index is combined, the formulation for Decision making for pavement maintenance scheme provides scientific basis.
Brief description of the drawings
Fig. 1 is that road surface breakage evaluates sub-indicator weight analysis hierarchy Model in overall target PDCI.
Embodiment
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification
Word can be implemented according to this.
When carrying out Pavement Performance assessment, the selection of evaluation index should follow science, objective, workable, purpose
The principle such as clearly.Damages of Asphalt Road Surface situation primary evaluation index is road surface transverse crack evaluation number TCEI, pavement patching shape
Condition indices P PCI and road surface deterioration extent indices P SCI.Pavement distress indices P DCI is also adding by sub-indicator
What power was calculated, the pavement distress comprehensive evaluation model of foundation is as shown in formula (1)：
In formula：PDCI --- pavement distress index, to evaluate asphalt pavement of highway breakage integrated status；
TCEI --- road surface transverse crack evaluation number；
PPCI --- pavement patching status score；
PSCI --- road surface deterioration extent index；
ωi--- the comprehensive weight of corresponding index, i=1,2,3.
The method of agriculture products weight mainly has two classes, i.e. subjective weighting method and objective weighted model.Subjective weighting method is root
A kind of method of weight is determined according to the subjective attention degree to each evaluation index of people, such as Delphi method, binomial coefficient method, layer
Fractional analysis, ring are than point system etc..Objective weighted model is to determine corresponding index weights according to the size of raw information amount, main
There are PCA, equal method, Information Entropy etc..
Analytic hierarchy process (AHP) is that the element relevant with decision-making is resolved into the levels such as target, criterion, scheme, is entered on this basis
The decision-making technique of row qualitative and quantitative analysis, be characterized in the essence of decision problem of complexity, influence factor and its it is interior
On the basis of relation etc. is analysed in depth, the thought process mathematicization of decision-making is made using less quantitative information, so as to be more
Target, multiple criteria or the complicated decision-making problems without architectural characteristic provide easy decision-making technique.
Information Entropy is the objective tax that a kind of size of the information content included according to each desired value determines decision index system weight
Quan Fa, have been obtained for widely using and achieving good effect in production practices.In information theory, entropy is system
The measurement of unordered degree or confusion degree, information are interpreted the reduction of the unordered degree of system, while illustrate a certain category of system
The degree of variation of property.If the comentropy of some index is smaller, indicate that the degree of variation of its desired value is bigger, there is provided information content
Also more, the effect played in overall merit is bigger, then its weight also should be bigger；Conversely, some indication information entropy is bigger,
Indicate that the degree of variation of its desired value is smaller, there is provided information content it is also fewer, the effect played in overall merit is smaller,
Then its weight also should be smaller.
The weight of each single index is divided into two parts by the present invention, and Part I is attribute weight, represents single index pair
The influence degree of pavement damage situation, the weight are to immobilize, and are determined using the analytic hierarchy process (AHP) in subjective weighting method；
Part II is grade weight, represents the actual menace level of each evaluation index, the weight is variable, as desired value is serious
The difference of degree and change, can be determined using the Information Entropy in objective weighted model.
Because grade weight is determined by the order of severity of damaged single item evaluation index, therefore 2 kinds of weight synthesis institutes
The comprehensive weight obtained is can accordingly to increase with the growth of the index order of severity, so as to avoid because using fixed weight
And serious index is neutralized, also make it that evaluation result is more accurate.
A kind of evaluation method of Damages of Asphalt Road Surface situation, wherein, comprise the following steps：
1) road surface breakage data are gathered；
2) the road surface breakage data are based on, calculate transverse crack spacing TCS and transverse crack penetration degree TWR, and with
Evaluation index of the two indexs as road surface transverse crack, calculate road surface transverse crack evaluation number TCEI；
3) the road surface breakage data are based on, calculate pavement patching status score PPCI；
4) the road surface breakage data are based on, calculate road surface deterioration extent indices P SCI；
5) analytic hierarchy process (AHP) in subjective weighting method is used to calculate the attribute weight for obtaining TCEI, PPCI and PSCI respectively
ω′1、ω′2With ω '3；
6) Information Entropy in objective weighted model is used to calculate the grade weights omega for obtaining TCEI, PPCI and PSCI respectively "1、
ω"2With ω "3；
7) attribute weight in TCEI, PPCI and PSCI and grade weight be calculated respectively TCEI, PPCI and
PSCI comprehensive weight ω1、ω2And ω3；
8) pavement distress indices P DCI evaluation model is built, the expression formula of the evaluation model is：
The evaluation result of pavement distress is obtained according to the value for the PDCI being calculated.
The step of step 5) middle level fractional analysis determines attribute weight be：
A) hierarchical model is built
Determine that road surface breakage evaluation overall target PDCI is destination layer A；Determine that pavement structural strength and road traveling are comfortable
The rule layer element of property is C1、C2；Determine transverse crack evaluation number TCEI, pavement patching status score PPCI and road surface
Deterioration extent indices P SCI solution layer element is P1、P2、P3。
B) judgment matrix is established
A-C judgment matrixs are established, individual layer judgment matrix is related to C1、C2, compare the two importance, carry out assignment, structural matrix
A=A2*2, i.e.,：
C-P matrixes are established, it is P to be related to solution layer element1、P2、P3, compare simultaneously assignment, Judgement Matricies C two-by-two1=
(C1)3*3And C2=(C2)3*3, i.e.,：
C) Mode of Level Simple Sequence and consistency check
Pending A, C1, C2 matrix is loaded, based on spss statistical softwares, obtaining Mode of Level Simple Sequence consistency check CR is
0.0961 ＜ 0.1, passes through Mode of Level Simple Sequence consistency check；
D) total hierarchial sorting and consistency check
Loading, based on spss statistical softwares, obtains level by A, C1, C2 matrix of Mode of Level Simple Sequence consistency check
Total sequence consistency check CR ' is 0.0718 ＜ 0.1, passes through total hierarchial sorting consistency check；
E) spss statistical softwares are based on, obtain road surface transverse crack evaluation number TCEI, pavement patching status score PPCI
Attribute weight ω ', ω ' with road surface deterioration extent indices P SCI are specially：
ω '=[ω '1,ω′2,ω′3]T=[0.2558,0.1022,0.6421]T；
Wherein T is transposition factor.
Information Entropy determines that the grade weight step of three indexs is in the step 6)：
I) determination is evaluated the feature rate of specific gravity of object
For n evaluation object, m evaluation index, i-th of feature rate of specific gravity P for being evaluated object under jth item indexij
Expression formula be：
Wherein, xijThe matrix formed for the evaluation index value of bituminous paving.
II) entropy of evaluation index is determined
The entropy h of jth item evaluation indexjExpression formula be：
III) coefficient of variation of evaluation index is determined
The coefficient of variation g of jth item evaluation indexjExpression formula be：
gj=1-hj；
IV) the grade weight of evaluation index is determined
The grade weight w of jth item evaluation indexj" expression formula be：
Preferably, the evaluation method of described Damages of Asphalt Road Surface situation, wherein, road surface breakage shape in the step 7)
Weight factor ω in condition comprehensive evaluation indexiExpression formula be：
Wherein, ω ' is the attribute weight of i-th of single index；ω " is the grade weight of i-th of single index, and n is finger
Mark number.
Transverse crack spacing TCS expression formula is：
Wherein, L is the length in evaluation section；TCN is the transverse crack sum in evaluation section.
Transverse crack penetration degree TWR expression formula is：
Wherein, TCL is transverse crack evaluation length, and TCL=TCTL/TCN, TCTL are the total length of transverse crack, TCN
For the transverse crack sum in evaluation section；B is lane width.
Road surface transverse crack evaluation number TCEI expression formula is：
Pavement patching status score PPCI expression formula is：
PPCI=100-15.634 × PPR0.4032；
Wherein,It is pavement patching rate, CiFor the area of i-th of pavement patching, C is
The gross area on road surface to be measured, n are repairing quantity.
Road surface deterioration extent indices P SCI expression formula is：
PSCI=100-15.0 × SDR0.412；
Wherein,It is surface fracture rate, BiFor the area of i-th of road surface breakage, B is
The area on road surface to be measured；miFor the weight of the i-th class pavement damage, g is the types of damage sum comprising damaged condition.
The damage of bituminous pavement type g of table 1 and weight miTable
According to the high road of Beijing-Shanghai high speed and Fenguan Superhighway pavement distress data collected, calculate respectively TCEI,
PPCI, PSCI, result of calculation such as following table：
The high road of 2 Beijing-Shanghai high speed of table and Fenguan Superhighway pavement distress data
Below by taking the high road of Beijing-Shanghai high speed and Fenguan Superhighway pavement distress as an example, its pavement distress is carried out
Overall merit simultaneously determines its opinion rating.
The determination of 2.1 attribute weights
2.1.1 hierarchical model is built
According to the general principle of analytic hierarchy process (AHP), with reference to pavement distress single item evaluation index proposed above, it is based on
The influence of difference damage road pavement structural strength and Road surface quality, establish asphalt pavement of highway damaged condition synthesis and comment
The hierarchy Model of valency, as shown in Figure 1.Road surface breakage evaluation overall target PDCI can be identified as destination layer A in this example.Examine
The significance level of each sub-indicator road pavement breakage overall merit is considered, respectively from road pavement structural strength and road traveling comfortableness
Two aspects are compared, therefore the two principles can be defined as to rule layer element, numbering C1, C2.Overall target it is final really
It is fixed, it is to be based on transverse crack evaluation number TCEI, pavement patching status score PPCI, road surface deterioration extent indices P SCI,
Can be using this three as solution layer element, numbering P1, P2, P3.
2.1.2 Judgement Matricies
Establish A-C judgment matrixs, individual layer judgment matrix is related to two elements, the influence degree of road pavement structural strength and right
The influence degree of Road surface quality, relatively the two importance, carry out assignment (assignment mode see the table below 3), structural matrix A2*2.
Then C-P matrixes are constructed, are directed to three elements, i.e. transverse crack evaluation number TCEI, pavement patching situation
Indices P PCI and road surface deterioration extent indices P SCI, compares two-by-two and assignment (assignment mode see the table below 3), construction judge square
Battle array (C1)3*3(C2)3*3。
The importance scale implication of table 3
| Relative importance aijValue | Scale implication |
| 1 | Two elements are compared, and have identical importance |
| 3 | Two elements are compared, and the former is slightly more important than the latter |
| 5 | Two elements are compared, and the former is more obvious than the latter important |
| 7 | Two elements are compared, and the former is more extremely important than the latter |
| 9 | Two elements are compared, and the former is more absolutely essential than the latter |
| 2、4、6、8 | The median of above-mentioned judgement |
| It is reciprocal | If the ratio between element i and j importance is aij, then the ratio between element j and i are 1/aij |
2.1.3 Mode of Level Simple Sequence and consistency check
Consistency check is carried out to A first, because A is a 2 rank matrix, meets the consistency principle, eigenvalue of maximum λmax=
2, characteristic vector W=[W corresponding to it1, W2]T=[0.8333,0.1667]T.To C1And C2Matrix carry out consistency check with
And calculate each element weight, individual layer judgment matrix result of calculation such as table 4.
The individual layer judgment matrix result of calculation of table 4
| Element weights | Wi1 | Wi2 | Wi3 | λmax | CRi |
| WC1 | 0.2926 | 0.0668 | 0.6406 | 3.0999 | 0.0961 |
| WC2 | 0.0719 | 0.2790 | 0.6491 | 3.0649 | 0.0624 |
From CR result of calculations in table 4, CR is respectively less than 0.1, therefore individual layer Matrix C1And C2By consistency check, it is
Active matrix.
2.1.4 total hierarchial sorting and consistency check
Consistency check, CI=0.8333 × 0.04995+0.1677 × 0.03245=are carried out to total hierarchial sorting
0.04162, RI=0.58,Understand that total hierarchial sorting passes through consistency check.Factor P1、P2、P3It is right
Answer the weight calculation of destination layer as follows：
W '=[ω '1,ω′2,ω′3]T=[0.2558,0.1022,0.6421]T
W ' is the attribute weight of pavement distress overall merit, the weight be it is changeless, will not be with being commented
Section or the evaluation index value of valency and change.From above formula, ω '1=0.2558, ω '2=0.1022, ω '3=0.6421.
The determination of 2.2 grade weights
According to Jiangsu Beijing-Shanghai Expressway 2012 and 2008, the Fenguan Superhighway road surface breakage testing number of 2012
Exemplified by, the grade weight of this two highways is calculated.According to step in embodiment 1, calculate respectively Beijing-Shanghai Expressway and
The grade weight of Fenguan Superhighway road surface breakage, is summarized in table 5.
The grade weight that the Information Entropy of table 5 determines
As shown in Table 5, under the identical time, different highways want the difference of Damage Types due to road base, result in each
The grade weight of evaluation index differs greatly, and the weight of Beijing-Shanghai Expressway pavement patching status score is maximum during 2012,
Secondly it is transverse crack evaluation number, this and Beijing-Shanghai Expressway actual road surface breakage data in 2012 are consistent, pavement patching
Situation is more serious, and road surface transverse crack and other surfaces deterioration extent are preferable；And Fenguan Superhighway road surface transverse crack is commented
The weight of valency index is maximum, shows pavement disease based on transverse crack.For same highway, under different time
The grade weight of each evaluation index also differs, from the Beijing-Shanghai Expressway weight calculation result of 2008 and 2012,
The weight of Beijing-Shanghai Expressway road surface transverse crack evaluation number in 2008 is maximum, and the weight for repairing status score is slightly less than transverse direction
Fracture evaluation index, show that annual the Beijing-Shanghai Expressway road surface transverse joint situation and repairing situation are serious, weights meet road
Face actual spoilage situation, browse Beijing-Shanghai Expressway maintenance historical summary and understand, road surface employs from 2009 is covered with 4~5cm
The overhaul maintenance punishment in face, all fronts cover will be completed to the end of the year 2011, therefore pavement distress in 2012 has obtained huge improvement,
Road surface transverse crack and the weight of damaged surfaces status score will be much smaller than repairing status score.As can be seen here, Information Entropy determines
Grade weight can reflect the real conditions of road surface breakage well.
The determination of 2.3 comprehensive weights
Comprehensive weight ω in pavement distress comprehensive evaluation indexiExpression formula be：
Wherein, ω 'iFor the attribute weight of i-th of single index；ωi" for the grade weight of i-th of single index, n is finger
Mark number.
Calculate the comprehensive weight of two highways respectively according to above formula, result of calculation is summarized in table 6.
The determination of the comprehensive weight of table 6
Pavement distress indices P DCI evaluation model expression formula is：
It is as follows by the weight of table 5, pavement distress indices P DCI calculating：
Beijing-Shanghai Expressway 2012：PDCI=TCEI0.3265·PPCI0.3391·PSCI0.3344
Beijing-Shanghai Expressway 2008：PDCI=TCEI0.4249·PPCI0.2483·PSCI0.3268
Fenguan Superhighway 2012：PDCI=TCEI0.5856·PPCI0.2185·PSCI0.1959
Pavement distress indices P DCI grade scale is as shown in table 7 below.
The pavement distress indices P DCI grade scales of table 7
| Evaluation index | It is excellent | It is good | In | It is secondary | Difference |
| PDCI | ≥90 | 80~90 | 70~80 | 60~70 | ＜ 60 |
Each 3km sections under the conditions of selecting three kinds, be respectively adopted set forth herein pavement distress variable synthesis evaluate mould
The Pavement distress PCI that pavement distress indices P DCI ' and current specifications propose under type PDCI, fixed weight is carried out
Evaluation, as a result such as table 8.
Pavement distress indices P DCI ' expression formula is under fixed weight：
PDCI '=ω1·TCEI+ω2·PPCI+ω3·PSCI
Table 8PDCI and PDCI ' and PCI contrast table
As shown in Table 8, PCI values are respectively less than for this nine sections, PDCI values, carry out evaluating Shi Jiuge roads with PCI indexs
The pavement distress grade of section is in excellent, and road surface breakage is slight, it is not necessary to carries out shield of being accomplished in road surface, it is only necessary to be directed to
Disease carries out routine maintenance.And with set forth herein PDCI indexs evaluated when, nine section pavement distresses are commented
Valency grade differs greatly with PCI, with reference to the actual disease incidence in road surface in each section and each subitem evaluation index TCEI, PPCI and
PSCI result of calculation understands that PDCI evaluation results, closer to actual road conditions, can preferably reflect road surface relative to PCI indexs
The truth of damage.Such as section 7, the section transverse crack situation is very serious, in secondary level, but repairs situation and table
Face deterioration extent is in top grade level, PCI evaluation results be excellent and during PDCI evaluation results are, it is seen that the evaluation of PDCI indexs
As a result it is more accurate and reliable.The evaluation result for contrasting PDCI and PDCI ' understands that PDCI ' evaluation results are better than PDCI, and
The evaluation result difference in each section is smaller, it is difficult to distinguishes the badly broken degree of different sections of highway.With 3 roads of Fenguan Superhighway
Exemplified by section, the evaluation result in 3 sections is respectively：In, it is good, excellent (PDCI) and good, excellent, excellent (PDCI '), with actual spoilage count
Situation relatively understands that the evaluation result of PDCI models is closer in actual spoilage situation.
In summary, set forth herein asphalt pavement of highway damaged condition variable synthesis evaluation method be reasonable
, dynamic processing is taken to the weight of index weights, weight can increase with the increase of the index order of severity, with tradition
Evaluation model is compared, and evaluation result is more accurate, and the evaluation of the road pavement damaged condition order of severity plays directive function；In combination with
Failure analysis (FA) evaluation index, the formulation for Decision making for pavement maintenance scheme provide scientific basis.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details.
Claims (9)
1. a kind of evaluation method of Damages of Asphalt Road Surface situation, it is characterised in that comprise the following steps：
1) road surface breakage data are gathered；
2) the road surface breakage data are based on, calculate transverse crack spacing TCS and transverse crack penetration degree TWR, and with this two
Evaluation index of the individual index as road surface transverse crack, calculate road surface transverse crack evaluation number TCEI；
3) the road surface breakage data are based on, calculate pavement patching status score PPCI；
4) the road surface breakage data are based on, calculate road surface deterioration extent indices P SCI；
5) analytic hierarchy process (AHP) in subjective weighting method is used to calculate the attribute weight ω ' for obtaining TCEI, PPCI and PSCI respectively1、
ω′2With ω '3；
6) Information Entropy in objective weighted model is used to calculate the grade weights omega for obtaining TCEI, PPCI and PSCI respectively "1、ω"2With
ω"3；
7) TCEI, PPCI and PSCI is calculated in the attribute weight in TCEI, PPCI and PSCI and grade weight respectively
Comprehensive weight ω1、ω2And ω3；
8) pavement distress indices P DCI evaluation model is built, the expression formula of the evaluation model is：
<mrow>
<mi>P</mi>
<mi>D</mi>
<mi>C</mi>
<mi>I</mi>
<mo>=</mo>
<msup>
<mi>TCEI</mi>
<msub>
<mi>&omega;</mi>
<mn>1</mn>
</msub>
</msup>
<mo>&times;</mo>
<msup>
<mi>PPCI</mi>
<msub>
<mi>&omega;</mi>
<mn>2</mn>
</msub>
</msup>
<mo>&times;</mo>
<msup>
<mi>PSCI</mi>
<msub>
<mi>&omega;</mi>
<mn>3</mn>
</msub>
</msup>
<mo>;</mo>
</mrow>
The evaluation result of pavement distress is obtained according to the value for the PDCI being calculated.
2. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that transverse crack in step 2)
Spacing TCS calculation formula is：
<mrow>
<mi>T</mi>
<mi>C</mi>
<mi>S</mi>
<mo>=</mo>
<mfrac>
<mi>L</mi>
<mrow>
<mi>T</mi>
<mi>C</mi>
<mi>N</mi>
</mrow>
</mfrac>
<mo>;</mo>
</mrow>
Wherein, L is the length in evaluation section；TCN is the transverse crack sum in evaluation section.
3. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that transverse crack in step 2)
Penetration degree TWR calculation formula is：
<mrow>
<mi>T</mi>
<mi>W</mi>
<mi>R</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>T</mi>
<mi>C</mi>
<mi>L</mi>
</mrow>
<mi>B</mi>
</mfrac>
<mo>;</mo>
</mrow>
Wherein, TCL is transverse crack evaluation length, and TCL=TCTL/TCN, TCTL are the total length of transverse crack, and TCN is to comment
Transverse crack sum in valency section；B is lane width.
4. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that road surface is horizontal in step 2)
Fracture evaluation index TCEI calculation formula is：
<mrow>
<mi>T</mi>
<mi>C</mi>
<mi>E</mi>
<mi>I</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>T</mi>
<mi>C</mi>
<mi>S</mi>
</mrow>
<mrow>
<mi>T</mi>
<mi>W</mi>
<mi>R</mi>
</mrow>
</mfrac>
<mo>.</mo>
</mrow>
5. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that pavement patching in step 3)
Status score PPCI expression formula is：
PPCI=100-15.634 × PPR0.4032；
Wherein,It is pavement patching rate, CiFor the area of i-th of pavement patching, C is to be measured
The gross area on road surface, n are repairing quantity.
6. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that step 4) road surface damages
Bad status score PSCI expression formula is：
PSCI=100-15.0 × SDR0.412；
Wherein,It is surface fracture rate, BiFor the area of i-th of road surface breakage, B is to be measured
The area on road surface；miFor the weight of the i-th class pavement damage, g is the types of damage sum comprising damaged condition.
7. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that ω '1=0.2558, ω '2
=0.1022, ω '3=0.6421.
8. the evaluation method of Damages of Asphalt Road Surface situation as claimed in claim 1, it is characterised in that the step 6) middle grade
The computational methods of weight are：
I) determination is evaluated the feature rate of specific gravity of object
For n evaluation object, m evaluation index, i-th of feature rate of specific gravity P for being evaluated object under jth item indexijTable
It is up to formula：
<mrow>
<msub>
<mi>p</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
<mo>=</mo>
<msub>
<mi>x</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
<mo>/</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<msub>
<mi>x</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
<mo>;</mo>
</mrow>
Wherein, xijThe matrix formed for the evaluation index value of bituminous paving；
II) entropy of evaluation index is determined
The entropy h of jth item evaluation indexjExpression formula be：
<mrow>
<msub>
<mi>h</mi>
<mi>j</mi>
</msub>
<mo>=</mo>
<mo>-</mo>
<mfrac>
<mn>1</mn>
<mrow>
<mi>ln</mi>
<mrow>
<mo>(</mo>
<mi>n</mi>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<msub>
<mi>p</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
<mi>ln</mi>
<mi> </mi>
<msub>
<mi>p</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
<mo>;</mo>
</mrow>
III) coefficient of variation of evaluation index is determined
The coefficient of variation g of jth item evaluation indexjExpression formula be：
gj=1-hj；
IV) the grade weight of evaluation index is determined
The grade weights omega of jth item evaluation indexj" expression formula be：
<mrow>
<msubsup>
<mi>&omega;</mi>
<mi>j</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msubsup>
<mo>=</mo>
<mfrac>
<msub>
<mi>g</mi>
<mi>j</mi>
</msub>
<mrow>
<msubsup>
<mi>&Sigma;</mi>
<mrow>
<mi>j</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</msubsup>
<msub>
<mi>g</mi>
<mi>j</mi>
</msub>
</mrow>
</mfrac>
<mo>.</mo>
</mrow>
A kind of 9. evaluation method of Damages of Asphalt Road Surface situation according to claim 1, it is characterised in that the step 7)
The expression formula of middle comprehensive weight is：
<mrow>
<msub>
<mi>&omega;</mi>
<mi>i</mi>
</msub>
<mo>=</mo>
<mfrac>
<msqrt>
<mrow>
<msubsup>
<mi>&omega;</mi>
<mi>i</mi>
<mo>&prime;</mo>
</msubsup>
<msubsup>
<mi>&omega;</mi>
<mi>i</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msubsup>
</mrow>
</msqrt>
<mrow>
<msubsup>
<mi>&Sigma;</mi>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</msubsup>
<msqrt>
<mrow>
<msubsup>
<mi>&omega;</mi>
<mi>i</mi>
<mo>&prime;</mo>
</msubsup>
<msubsup>
<mi>&omega;</mi>
<mi>i</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msubsup>
</mrow>
</msqrt>
</mrow>
</mfrac>
<mo>,</mo>
<mrow>
<mo>(</mo>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
<mo>,</mo>
<mn>2</mn>
<mo>,</mo>
<mo>...</mo>
<mo>,</mo>
<mi>n</mi>
<mo>)</mo>
</mrow>
<mo>;</mo>
</mrow>
Wherein, ω 'iFor the attribute weight of i-th of single index；ωi" for the grade weight of i-th of single index, n is that index is total
Number.
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| CN110221976A (en) * | 2019-05-28 | 2019-09-10 | 广西电网有限责任公司电力科学研究院 | A kind of measuring terminal software quality method for quantitatively evaluating based on measurement technology |
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