CN112765713A - Comprehensive evaluation method for health diagnosis of sluice engineering - Google Patents
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Abstract
The invention discloses a comprehensive evaluation method for health diagnosis of sluice engineering, which integrates a subjective weighting method and an objective weighting method, so that a weight calculation result is more reasonable and reliable, and a complete evaluation system is formed by combining the comprehensive evaluation method with a sluice health diagnosis matter element model based on a quadruple coefficient. The health state of the sluice is accurately reflected through the sluice health diagnosis object element model based on the four-element linkage coefficient, and the health state of each diagnosis index can be well reflected, so that a good basis can be provided for maintenance and reinforcement, the development trend of the health state of the sluice can be obtained through the linkage, and the health state of the sluice is more intuitively reflected through the calculation result of the comprehensive linkage.
Description
Technical Field
The invention relates to the field of hydraulic engineering, in particular to a comprehensive evaluation method for health diagnosis of sluice engineering.
Background
Water conservancy is the foundation of national economy, and the sluice is important water conservancy project building, as the important guarantee of economic society sustainable development, the sluice plays an important role in aspects such as industrial and agricultural production, water supply, flood control, tide blocking and drainage. However, most of the water gates are built in the fifth and sixty years of the last century, and are limited by the economic technology at that time, unreasonable in design, limited in construction technology, improper or even lack of later maintenance measures and other factors, so that the water gates have more problems, such as aging of metal structures and corrosion of opening and closing machines, and the strength of concrete is continuously reduced or even cannot meet the requirements of the current specifications. In addition, the environment of the sluice gate is increasingly worsened by the frequent extreme weather and natural disasters in recent years, such as rainstorm, snow disaster, earthquake and the like. The damage of the sluice is accelerated by the common influence of the internal cause and the external cause.
Once a large project such as a sluice is out of order, immeasurable results are generated. At present, most of water gates in China have been operated for fifty-six decades, the projects basically step into the middle-aged and old years, and the health state is continuously deteriorated, so that the water gate projects need to be maintained and reinforced, and the operation safety and high efficiency of the water gate projects are ensured. Before the sluice engineering is strengthened, the health state of the sluice must be known firstly, so that the 'symptomatic medicine administration' can be realized, and therefore, the health diagnosis of the sluice is very important.
The health diagnosis essence is to perform overall safety evaluation on the current state of the water gate, and in a large aspect, if the water gate engineering is healthy, the engineering is safe and can be continuously used; if the engineering is unhealthy, the engineering is in an unsafe state, and danger removal and reinforcement are needed; when the performance of the sluice engineering can not be recovered through maintenance and reinforcement, the sluice engineering needs to be downgraded or retired, and the retirement means that the sluice engineering finishes a complete life cycle; from a small point of view, it is particularly relevant to the individual components of the sluice engineering, such as working bridges, bent frames, piers, etc., which also have a life cycle. According to the design specifications of reasonable service life and durability of water conservancy and hydropower engineering (SL 654-; 3-grade buildings need to be used for at least 50 years; class 4 and 5 buildings have a life of at least 30 years. The life cycle of each component forming the water gate is often shorter than the service life of the whole water gate project, the components are subjected to health diagnosis, the safety states of the components are judged, the components in sub-health, pathological changes and diseases are reinforced and even replaced, the important effect on improving the overall performance of the water gate is achieved, and the service life of the water gate project can be prolonged.
Disclosure of Invention
The invention aims to provide a comprehensive evaluation method for health diagnosis of a sluice engineering, which is simple, convenient and reliable, is beneficial to determining the safety state of the sluice and balancing the service life, benefit and operation management cost of the sluice, thereby pertinently implementing engineering reinforcement and maintenance measures.
In order to achieve the above purpose, the comprehensive evaluation method for health diagnosis of sluice engineering comprises the following steps:
(1) constructing a sluice engineering health diagnosis index system:
hierarchical principle
The sluice engineering is a complex system, and the health diagnosis of the sluice engineering is a comprehensive and systematic analysis process, so that the sluice engineering can be decomposed into a plurality of multi-level structures with subsystems, and the health diagnosis of the sluice engineering can be reasonably completed according to a certain sequence, namely from bottom to top.
Scientific principle
The final health diagnosis result is directly influenced by the drawing up of the diagnosis index, so the scientific principle is the necessary requirement for drawing up the index. The concept of the diagnosis index needs to be clear, and meanwhile, the diagnosis index is representative in reflecting the health state of the water gate, and the diagnosis index needs to be drawn up frequently according to the current water gate safety evaluation standard. At present, the water gate health diagnosis index is formulated according to the Water gate safety evaluation guide (SL 214-2015).
Principle of operability
When a health diagnosis index is drawn up, two indexes, namely quantitative index and qualitative index, are generally available, and the qualitative index is usually quantized by a certain quantization method, so that the quantization method and the model have scientific and reasonable characteristics and are convenient for actual operation, and meanwhile, due to the fact that improper management of the sluice can cause the loss of some data, the reasonable index is selected to fully utilize the existing data.
The indexes are established according to a certain hierarchical structure to form a health diagnosis index system. The construction is carried out according to the method for constructing the index system. The health state of the sluice engineering is taken as a general target, the 3 items of current engineering situation investigation, engineering safety detection and engineering structure stability are taken as first-level indexes, and then the 3 first-level indexes are downwards divided into a multi-level health diagnosis system structure with a plurality of subsystems.
(2) Quantifying the health diagnosis indexes of the sluice engineering:
the same type of indicators can be compared with each other, and in the sluice health diagnosis, the different types of the diagnosis indicators have different dimensions, so that the indicators need to be processed, and the indicators are correspondingly subjected to non-dimensionalization. Recording the comprehensive evaluation index value as { xij1,2, …, m; if j is 1,2, …, n }, the processing result is:
in the formula: x is the number ofijIs observed value of jth data of ith index, M'jIs an index xjOf satisfaction value of (1), m'jIs an index xjUnallowable values, c, d are known normal numbers; the effect of c is to "shift" the transformed values; d acts to "zoom in" or "zoom out" on the transformed value; the maximum and minimum values are c + d and c, respectively.
(3) The health diagnosis indexes of the sluice engineering are subjectively weighted:
the subjective weighting method is that an expert can reasonably sort the importance of each attribute according to own experience and understanding of actual problems, and reflects the actual situation to a certain extent. The subjective weighting method adopts a ring ratio grading method. The ring ratio scoring method evaluates each index based on the importance coefficient of the index. The method compares the importance of adjacent indexes from top to bottom in sequence to obtain the importance value of each evaluation index, then assumes that the importance value of the index finally compared is 1, corrects the importance ratio in sequence, multiplies the corrected importance ratio of the index arranged below by the importance ratio of the adjacent previous index to obtain the corrected importance ratio of the previous index. And dividing the correction importance ratio of each index by the sum of the functional correction values to obtain the corresponding weight of each index.
Examples are as follows:
assuming that a is 1.5B; b ═ 2.0C; c ═ 3.0D
Firstly, sorting the scoring objects according to relevant principles such as importance and the like, and then writing the scoring objects into a first column in a table 1 in sequence;
secondly, comparing and scoring two adjacent scoring objects from top to bottom, and writing the scoring objects into a second column as temporary coefficients;
third, the tentative coefficient is corrected. When the provisional coefficient of D is 1, the correction coefficients of A, B, C are 9, 6, and 3, respectively.
Fourthly, an evaluation coefficient is calculated, and the value of the evaluation coefficient is the weight of each evaluation index.
TABLE 1 example of the ring ratio scoring method
| Function name | Coefficient of tentatively determined | Correction factor | Coefficient of evaluation |
| (1) | (2) | (3) | (4)＝(3)/19 |
| A | 1.5 | 9.0 | 0.47 |
| B | 2.0 | 6.0 | 0.32 |
| C | 3.0 | 3.0 | 0.16 |
| D | —— | 1.0 | 0.05 |
| Total up to | 19.0 | 1.00 |
The ring ratio evaluation method is suitable for the condition that all evaluation objects have obvious comparability, can directly participate in comparison and can evaluate the function importance ratio. When the ring ratio scoring method is adopted, any element is compared with the upper and lower elements only, but not with all the elements. And when the proportion is evaluated, the proportion relation is flexibly determined according to the practical situation.
(4) The health diagnosis index of the sluice engineering is objectively weighted:
the objective weighting method is to calculate the weight by using a mathematical processing method for the information acquired by sluice health diagnosis, and considers the relationship among data to enable the calculation result of the weight value to be objective. The objective weighting method adopts an overproof multiple method.
The standard-exceeding multiple method is an objective weighting method for highlighting main factors, and different weights are respectively assigned according to the contribution rates of different indexes in an evaluation system. Not only embodies the comprehensive function of the evaluation factor, but also highlights the function of the overproof factor. The weight can be objectively reflected by the weight calculated by the standard exceeding multiple method, and the more standard exceeding, the larger weight. The standard multiple method calculates the weight according to the standard ratio, and then determines the weight coefficient through normalization processing. Assuming that there are t-level evaluation criteria and m evaluation indexes, the weight (ω) of the ith (i ═ 1,2, …, m) index is set to be equal toi) The calculation formula of (a) is as follows:
in the formula:
-average value of each level evaluation criterion of the ith index; sij-j-th evaluation criterion for the ith index (j ═ 1,2, … t); ci-the measured value of the ith index; i isi-the exceeding multiple of the ith index; omegai-the weight of the ith index.
(5) And (3) integrating the health diagnosis index weight of the sluice engineering:
subjective and objective weighting methods have certain defects. The subjective weighting method often has the subjectivity of experts and cannot well reflect objective practice, and the objective weighting method neglects the status of each index in the health diagnosis of the sluice. The invention adopts the method with the maximum dispersion to calculate the weight value of the subjective and objective combination, and combines the subjective weighting method and the objective weighting method, so that the weight calculation result is more reasonable.
It is assumed that the system has n indexes, and the weight vector set determined by the l weighting methods is ω (ω ═ ω)1,ω2,…,ωl) Wherein ω isk＝(ωk1,ωk2,…,ωkn) A weight vector of a kth weighting method, wherein k is 1,2, …, l and n are index numbers, and the vector is made
Θ＝(θ1,θ2,…,θl)T (5)
In the formula: theta1,θ2,…,θlRespectively represent linear distribution coefficients of the combined weights and should satisfy
The constraint requirement of (2).
The combining weight vector is then:
ωe＝ω1θ1+ω2θ2+…+ωlθl (6)
calculating an n-dimensional vector B as:
in the formula: diIs the quantized value of the ith index.
Solving the linear distribution coefficient of the combined weight as follows:
normalization processing
To thetakAnd (3) carrying out normalization treatment:
solving a combined weight vector:
(6) constructing a sluice health diagnosis matter element model based on the quadruple coefficient, and determining the comprehensive evaluation level of sluice engineering health diagnosis:
the invention introduces the quadruple-link coefficient into the material element model of sluice health diagnosis, and replaces the magnitude of the health diagnosis index with the quadruple-link coefficient, namely:
in the formula, u is the joint coefficient of the single health diagnosis index, M is the health state of the sluice, C is the diagnosis index, and V is the diagnosis index value.
And carrying out normalization processing on the obtained quaternary coupling coefficient to obtain:
wherein x is each evaluation index value, v1、v2And v3The critical value of each grade of the health state of the sluice.
When the index weight is considered, the calculation formula of the comprehensive joint coefficient is as follows:
and then the coupling coefficient is substituted into an equation (11) to obtain the sluice health diagnostic object model based on the quaternary coupling coefficient.
The invention has the beneficial effects that:
(1) the subjective weighting method and the objective weighting method are fused, so that the weight calculation result is more reasonable and reliable, and the evaluation system is combined with a sluice health diagnosis object model based on the quadruple coefficient to form a complete evaluation system.
(2) The health state of the sluice is accurately reflected through the sluice health diagnosis object element model based on the four-element linkage coefficient, and the health state of each diagnosis index can be well reflected, so that a good basis can be provided for maintenance and reinforcement, the development trend of the health state of the sluice can be obtained through the linkage, and the health state of the sluice is more intuitively reflected through the calculation result of the comprehensive linkage.
(3) In the past, the health diagnosis of the sluice engineering is mostly carried out by safety rechecking and field detection according to the standard, and the data of all aspects obtained by rechecking and detection are of greater importance, so that the overall health state of the sluice engineering is influenced deepest, and reasonable judgment cannot be carried out. The comprehensive evaluation method provided by the invention effectively solves the problem and is beneficial to promoting and constructing a scientific sluice management system.
Drawings
FIG. 1 is a flow chart of the evaluation method of the present invention;
FIG. 2 is a health diagnosis index system for sluice engineering.
Detailed Description
The concrete steps of the comprehensive evaluation method for health diagnosis of water gate engineering will be further explained with reference to the attached drawings and taking a water gate in Jiangsu as an example.
The method comprises the following steps: the health diagnosis index system of the sluice is established and divided into five grades.
First-level indexes: sluice health state A;
secondary indexes are as follows: investigation of the status of the project B1Engineering safety inspection B2Engineering structure stabilization B3；
And (3) three-level indexes: c1、C2、…、C10(see FIG. 1 for details, the same applies below);
four-stage indexes: d1、D2、…、D23；
Grade five indexes: e1、E2、…、E15。
Step two: and quantifying the health diagnosis indexes of the sluice.
The quantified value of the sluice health diagnosis index is defined as the health value of the index, the value is in the closed interval [0,1], and the health value is larger to indicate that the evaluation index is healthier. The qualitative evaluation indexes need to be assigned with quantitative standards, experts are invited to score the indexes, the scores of the experts are collected, and then standardized values are obtained through relevant processing; the quantitative index is quantitatively calculated according to data collected, tested and calculated in each stage of engineering health diagnosis.
(1) Investigation of current situation of engineering
Design construction conditions
Engineering operation management
State of engineering structure
(2) Engineering safety inspection
Concrete strength grade
Evaluation of concrete strength grade by engineering field detection data fRxAnd the concrete specification stipulates a minimum strength grade fcThe ratio F (F ═ F)Rx/fc) To evaluate the index. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
② carbonization depth
The concrete carbonization degree is evaluated by using the ratio C (d/C) of the actually measured carbonization depth d to the protective layer thickness C as an evaluation index. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
thickness of protective layer
Evaluation of protective layer thickness to examine data D in situcAnd a thickness D specified in "design Specification for Hydraulic concrete Structure" SL191-2008sThe ratio D (D ═ D)c/Ds) To evaluate the index. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
structure diseases
Appearance of hoist
Operation performance of hoist
Seventh, the appearance of the steel gate
Welding seam flaw detection of steel gate
(iii) thickness of Steel Gate coating
(3) Engineering structure stabilization
Coefficient of stability of anti-skid
The grading value of the anti-skid stability of the sluice structure is determined according to the anti-skid coefficient k of the sluice level, and when the grading value is more than 1.0, 1.00 is taken. Taking the allowable value of each level of sluice under each working condition as k0The scoring rules are as follows:
a、
b、
c、
d、
base stress ratio
And obtaining the safety value of the uneven coefficient of the foundation stress of each structure of the pump station engineering according to the uneven coefficient eta of the foundation stress of the foundation soil of the sluice, and taking 1.0 when the health value is greater than 1.0. Taking the allowable value of each structure of the sluice on different foundation soil qualities as eta under each load working condition combinationo. The quantification criteria were as follows:
a、
b、
c、
d、
bearing capacity of foundation
Evaluation of foundation bearing capacity with allowable bearing capacity [ R ] of foundation]And ground stress mean value
Ratio of (A to B)
To evaluate the index. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
bearing capacity of structure
The structural bearing capacity mainly refers to the strength of the structure, and if the structure is reinforced concrete, whether the reinforcing bars meet the actual use requirements is rechecked; if the structure is plain concrete or grouted block stone, whether the stress of the structure meets the actual use requirement is rechecked. Using the actual reinforcement amount A"Shi"And calculating the required reinforcement amount As meterThe ratio of A to A is used as the evaluation index"Shi"/As meter. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
energy dissipation and scour prevention
The energy dissipation scour prevention capability scoring adopts the ratio V of the actual length, depth, thickness, Helman length and other indexes of the stilling pool to the corresponding design valuesi(i-1, 2,3,4) as an evaluation index. When the health value is more than 1.0, 1.0 is taken. The quantification criteria were as follows:
a、
b、
c、
d、
step three: and (4) performing empowerment calculation on the health diagnosis index of the sluice.
(1) Weighting calculation by using ring ratio scoring method
From actual conditions and related experiences, comparing relative importance degrees among all evaluation objects in each layer, determining evaluation coefficients conforming to the evaluation objects, wherein a tentative coefficient represents the relative importance degrees and is sequentially ordered from top to bottom, then setting the index which is positioned at the lowest in the order to be 1, then obtaining correction coefficients of other indexes according to the specified coefficient relation among all indexes in sequence, further obtaining the evaluation coefficients of all indexes, making an evaluation coefficient table of all layers of evaluation objects, and making each evaluation coefficient tableThe value of the evaluation coefficient is the value of each index weight. With C in FIG. 11(design construction conditions) C2(engineering operation management) C3(current situation of engineering Structure) to the second level index B1The degrees of influence of (examination of the present engineering situation) are shown as examples, and the evaluation coefficients are shown in table 2.
TABLE 2B1Index evaluation coefficient table
| Sorting | Index name | Coefficient of tentatively determined | Correction factor | Coefficient of evaluation |
| 1 | C2 | 1.0 | 1.5 | 0.375 |
| 1 | C3 | 1.5 | 1.5 | 0.375 |
| 2 | C1 | 1.2 | 1.0 | 0.250 |
| Total of | 4.0 | 1.000 |
Therefore, B is obtained by the ring ratio score method1(current engineering situation survey) index C1(design construction conditions) C2(engineering operation management) C3The weight of the three indices (current engineering structure) is ω ═ 0.250,0.375, 0.375.
(2) Weight calculation by standard exceeding multiple method
Also shown as C in FIG. 11(design construction conditions) C2(engineering operation management) C3(current situation of engineering Structure) to the second level index B1The weight calculation is performed by taking the influence degree of (engineering status investigation) as an example.
The results are shown in Table 3 by quantifying the three indicators.
TABLE 3B1Lower index quantization table
| Index (I) | Expert 1 | Expert 2 | Expert 3 | Expert 4 | Expert 5 | Expert 6 | Expert 7 | Expert 8 | Expert 9 | Expert 10 |
| C1 | 0.91 | 0.86 | 0.89 | 0.92 | 0.79 | 0.80 | 0.79 | 0.85 | 0.95 | 0.90 |
| C2 | 0.88 | 0.88 | 0.90 | 0.85 | 0.78 | 0.71 | 0.84 | 0.72 | 0.83 | 0.90 |
| C3 | 0.95 | 0.90 | 0.96 | 0.88 | 0.93 | 0.86 | 0.92 | 0.92 | 0.93 | 0.87 |
Then B is calculated according to the formulas (2), (3) and (4)1(current engineering situation survey) index C1(design construction conditions) C2(engineering operation management) C3The weight calculation result of the three indices (current engineering structure) is ω ═ 0.334,0.324, and 0.342.
(3) Weight fusion
Fusing the weights of the evaluation indexes determined by the cyclic ratio scoring method and the standard multiple method by adopting a dispersion maximization method, and using C in the same figure 11(design construction conditions) C2(engineering operation management) C3(current situation of engineering Structure) to the second level index B1The influence degree of (engineering status investigation) is taken as an example, and the weight vector group determined by the ring ratio scoring method and the standard multiple method is omegak＝(ω1ω2) Wherein:
ω1＝(0.250,0.375,0.375)
ω2＝(0.334,0.324,0.342)
set of weight vectors:
solving the vector:
solving a linear distribution coefficient of the fusion weight:
to thetakAnd (3) carrying out normalization treatment:
blending weight:
step four: and obtaining a comprehensive linkage coefficient through a sluice health diagnosis matter element model based on the quaternary linkage coefficient, and judging the sluice health state.
The safety types of the sluice gate include four types including a first type sluice gate, a second type sluice gate, a third type sluice gate and a fourth type sluice gate, the sluice gate is in one-to-one correspondence with the health state of the sluice gate, namely, health, sub-health, pathological changes and diseases, and the health diagnosis indexes of the sluice gate are classified according to the classification principle, and are specifically shown in table 4.
TABLE 4 sluice health diagnostic index grading
| Safety classification of sluice | Health status of sluice | Evaluation index range |
| One kind | Health care | (0.9,1.0] |
| Class II | Sub-health | (0.8,0.9] |
| Three categories | Pathological changes | (0.6,0.8] |
| Four categories | Disease danger | [0.0,0.6] |
The health diagnosis of a water gate in Jiangsu includes the steps of firstly diagnosing from the bottom evaluation index of the gate, gradually ascending, and finally obtaining the overall health state of the gate.
E.g. from the lowest level indicator E1～E4Upward calculation of index D1～D4: and (3) constructing a sluice health diagnostic object model based on the quadruple coefficients by substituting the index values into the formula (13) and the formula (14):
D1index E1～E4The health diagnostic material model of (1):
then, D is calculated according to the formula (15)1Comprehensive coefficient of (2):
the calculation of other indices is the same, and finally D1～D4The sluice health diagnosis material element model comprises the following components:
according to the method, the comprehensive coefficient of the health state of a certain sluice in Jiangsu is finally obtained as follows:
it can be known that the health status of a certain sluice in Jiangsu is sub-health, and the sluice is evaluated as a two-class sluice in practical engineering, and the corresponding health status is sub-health, so the calculation result is consistent with the practical situation. According to the guide of safety evaluation of water gates (SL214-2015), the operating indexes of the two types of gates basically reach the design standard, the project is damaged to a certain extent, and the water gates can normally operate after being maintained. The health state of each index of the sluice is diagnosed by the sluice health diagnosis material element model based on the quadruple coefficient, so that the indexes of 'pathological changes' can be mainly repaired, the indexes of 'sub-health' are intensively observed, and reinforcement measures are properly taken.
Claims (7)
1. The comprehensive evaluation method for the health diagnosis of the sluice engineering is characterized by comprising the following steps of:
(1) constructing a sluice engineering health diagnosis index system;
(2) quantifying health diagnosis indexes of the sluice engineering;
(3) the health diagnosis indexes of the sluice engineering are subjectively weighted;
(4) the health diagnosis index of the sluice engineering is objectively weighted;
(5) the sluice engineering health diagnosis index weight fusion combines a subjective weighting method and an objective weighting method, so that the result is more reasonable;
(6) and constructing a sluice health diagnosis matter element model based on the quadruple coefficient, and determining the comprehensive evaluation level of sluice engineering health diagnosis.
2. The comprehensive evaluation method for the health diagnosis of the sluice engineering according to claim 1, wherein the step (1) is to construct a sluice engineering health diagnosis index system:
hierarchical principle
The sluice engineering is a complex system, which is divided into a plurality of multi-layer structures with subsystems, and then the sluice engineering can reasonably complete the process by performing health diagnosis on the sluice engineering in a certain sequence, namely from bottom to top;
scientific principle
The final health diagnosis result is directly influenced by the drawing up of the diagnosis index, so the scientific principle is the necessary requirement for drawing up the index; at present, the sluice health diagnosis index is drawn up according to the sluice safety evaluation guide (SL 214-2015);
principle of operability
The indexes are established according to a certain hierarchical structure to form a health diagnosis index system, the health state of the sluice engineering is taken as a general target, the 3 items of current engineering state investigation, engineering safety detection and engineering structure stability are taken as first-level indexes, and then the 3 first-level indexes are downwards divided into a multi-level health diagnosis system structure with a plurality of subsystems.
3. The comprehensive evaluation method for the sluice engineering health diagnosis according to claim 2, wherein the step (2) of quantifying the sluice engineering health diagnosis index comprises:
the same type of indexes can be compared with each other, and the dimension of the indicators is different due to different types of diagnostic indicators in the sluice health diagnosis, so that the indicators need to be processed, and the indicators are correspondingly subjected to non-dimensionalization processing; recording the comprehensive evaluation index value as { xij1,2, …, m; if j is 1,2, …, n }, the processing result is:
in the formula: x is the number ofijObservation of the jth data for the ith indexValue, M'jIs an index xjOf satisfaction value of (1), m'jIs an index xjUnallowable values, c, d are known normal numbers; the effect of c is to "shift" the transformed values; d acts to "zoom in" or "zoom out" on the transformed value; the maximum and minimum values are c + d and c, respectively.
4. The comprehensive evaluation method for the sluice engineering health diagnosis according to claim 3, wherein the sluice engineering health diagnosis index in the step (3) is subjectively weighted:
the subjective weighting method adopts a ring ratio scoring method, the method compares the importance of adjacent indexes from top to bottom in sequence to obtain the importance value of each evaluation index, then the importance value of the index which is finally compared is assumed to be 1, the importance ratio is corrected in sequence, the corrected importance ratio of the index arranged below is multiplied by the importance ratio of the adjacent previous index to obtain the corrected importance ratio of the previous index; and dividing the correction importance ratio of each index by the sum of the functional correction values to obtain the corresponding weight of each index.
5. The comprehensive evaluation method for the health diagnosis of the sluice engineering according to claim 4, wherein the water sluice engineering health diagnosis index in the step (4) is objectively weighted:
the objective weighting method adopts a standard multiple method and different weights are respectively assigned according to the contribution rates of different indexes in an evaluation system; the standard exceeding multiple method calculates the weight according to the standard exceeding ratio, and then determines the weight coefficient through normalization processing; assuming that there are t-level evaluation criteria and m evaluation indexes, the weight ω of the ith (i ═ 1,2, …, m) index is set to be ωiThe calculation formula of (a) is as follows:
in the formula:
-average value of each level evaluation criterion of the ith index; sij-j-th evaluation criterion for the ith index (j ═ 1,2, … t); ci-the measured value of the ith index; i isi-the exceeding multiple of the ith index; omegai-the weight of the ith index.
6. The comprehensive evaluation method for the sluice engineering health diagnosis according to claim 5, wherein the sluice engineering health diagnosis index weight fusion of the step (5):
the subjective weighting method and the objective weighting method have certain defects, the subjective and objective combination weight value is calculated by adopting the method with the largest dispersion, and the subjective weighting method and the objective weighting method are combined, so that the weight calculation result is more reasonable;
it is assumed that the system has n indexes, and the weight vector set determined by the l weighting methods is ω (ω ═ ω)1,ω2,…,ωl) Wherein ω isk＝(ωk1,ωk2,…,ωkn) A weight vector of a kth weighting method, wherein k is 1,2, …, l and n are index numbers, and the vector is made
Θ＝(θ1,θ2,…,θl)T (5)
In the formula: theta1,θ2,…,θlRespectively represent linear distribution coefficients of the combined weights and should satisfy
The constraint requirement of (2);
the combining weight vector is then:
ωe＝ω1θ1+ω2θ2+…+ωlθl (6)
calculating an n-dimensional vector B as:
in the formula: diIs the quantized value of the ith index;
solving the linear distribution coefficient of the combined weight as follows:
normalization processing
To thetakAnd (3) carrying out normalization treatment:
solving a combined weight vector:
7. the comprehensive evaluation method for the health diagnosis of the sluice engineering according to claim 6, wherein the step (6) is implemented by constructing a sluice health diagnosis object model based on a quadruple coefficient, and determining the comprehensive evaluation grade of the health diagnosis of the sluice engineering:
replacing the magnitude of the health diagnostic index with a quaternion coefficient, namely:
in the formula, u is a joint coefficient of a single health diagnosis index, M is the health state of the sluice, C is a diagnosis index, and V is a diagnosis index value;
and carrying out normalization processing on the obtained quaternary coupling coefficient to obtain:
wherein x is each evaluation index value, v1、v2And v3Critical values of various grades of the health state of the sluice;
when the index weight is considered, the calculation formula of the comprehensive joint coefficient is as follows:
and then the coupling coefficient is substituted into an equation (11) to obtain the sluice health diagnostic object model based on the quaternary coupling coefficient.
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