An evaluation method for applicability of a method for replacing elastic pads in high-speed turnout areas

Abstract

The application discloses a kind of for the evaluation method of the applicability of high-speed turnout area elastic pad replacement method, it is related to high-speed railway engineering field, including determining a plurality of first-level evaluation indexes and secondary evaluation indexes;Determine weight based on analytic hierarchy process;Prepare a plurality of elastic pad replacement schemes to be evaluated, obtain the first-level evaluation indexes corresponding to each elastic pad replacement scheme, secondary evaluation indexes;Determine the extension correlation degree of each elastic pad replacement scheme based on matter-element extension model;Based on the position relationship index of replacement area and sensitive area, the deterioration degree index of elastic pad, correct the extension correlation degree, establish comprehensive correlation degree evaluation model;Get the comprehensive correlation degree of each elastic pad replacement scheme.The application is used to solve the problem that there is lack of evaluation standard for high-speed turnout area elastic pad replacement method in prior art, to realize the purpose of providing scientific selection standard for high-speed turnout area elastic pad replacement method, providing quantifiable decision basis for field maintenance.

Description

Technical Field

[0001] This invention relates to the field of high-speed railway engineering, specifically to an evaluation method for the applicability of a method for replacing elastic pads in high-speed turnout areas. Background Technology

[0002] High-speed railway turnouts are one of the key pieces of equipment in railway engineering. Their complex structure, high performance requirements, and significant technical challenges make them the weakest link in the high-speed railway track structure. The elastic pads in the turnout area, as a core component, primarily bear the important functions of buffering wheel-rail impacts, reducing vibration transmission, and maintaining the track geometry in the turnout area. Their technical condition directly affects the stability and safety of the line. During long-term service, the elastic pads are subjected to the combined effects of train dynamic loads, environmental factors, and material aging, gradually exhibiting performance degradation such as visual damage and elasticity decline. When the degree of degradation exceeds the permissible range, replacement is necessary to restore the normal service performance of the track structure in the turnout area.

[0003] Since the large-scale construction and operation of high-speed railways in my country, there has been no extensive replacement of elastic pads. Replacement has only been carried out on individual pads with obvious damage or failure (such as broken pads, scratches, and cracks on the slides). Furthermore, the industry regulation "Rules for Maintenance of High-Speed ​​Railway Lines" does not explicitly specify the replacement methods for elastic pads in high-speed turnouts or their applicability. Under these circumstances, in actual on-site maintenance work, maintenance personnel can only rely on their individual or team experience to select the replacement method for elastic pads in high-speed turnout areas.

[0004] Due to the lack of unified evaluation standards and systematic criteria for judging the applicability of methods, the replacement methods adopted by different operators or under different operating conditions vary greatly, making it difficult to guarantee the replacement effect. In some cases, improper selection of methods may even lead to problems such as deterioration of the track structure in the turnout area or low maintenance efficiency.

[0005] Therefore, it is urgent to establish a scientific evaluation system for the applicability of the elastic pad replacement method in high-speed turnout areas. Summary of the Invention

[0006] This invention provides an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas, in order to solve the problem of the lack of evaluation standards for elastic pad replacement methods in high-speed turnout areas in the prior art, and to achieve the purpose of providing scientific selection standards for elastic pad replacement methods in high-speed turnout areas and providing quantifiable decision-making basis for on-site maintenance.

[0007] This invention is achieved through the following technical solution:

[0008] An evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas includes the following steps:

[0009] S1. Screen the engineering indicators that affect the difficulty of replacing the elastic pads in the high-speed turnout area, and determine several primary evaluation indicators from the engineering indicators.

[0010] S2. Set up several corresponding secondary evaluation indicators for each primary evaluation indicator;

[0011] S3. Determine the weights of each primary and secondary evaluation indicator based on the analytic hierarchy process (AHP).

[0012] S4. Prepare several elastic pad replacement schemes to be evaluated, and obtain the primary and secondary evaluation indicators corresponding to each elastic pad replacement scheme.

[0013] S5. Determine the extension correlation degree of each elastic pad replacement scheme based on the matter-element extension model;

[0014] S6. Based on the positional relationship index between the replacement area and the sensitive area and the deterioration index of the elastic pad, the extension correlation degree is corrected, and a comprehensive correlation degree evaluation model is established.

[0015] S7. Obtain the comprehensive correlation of each elastic pad replacement scheme, sort them, and output the evaluation results.

[0016] To address the lack of evaluation standards for elastic pad replacement methods in high-speed turnout areas in existing technologies, which leads to significant differences in replacement methods and inconsistent replacement results among different operators or under different operating conditions, this invention proposes an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas. This method first identifies engineering indicators affecting the difficulty of elastic pad replacement operations in high-speed turnout areas. From these indicators, several primary evaluation indicators are determined, and then several secondary evaluation indicators are assigned to each primary indicator. The weights of each evaluation indicator are obtained using the analytic hierarchy process (AHP). Next, several elastic pad replacement schemes to be evaluated are prepared, and the values ​​of each evaluation indicator corresponding to each scheme are obtained. Then, based on the matter-element extension model, the extension correlation degree of each elastic pad replacement scheme is determined. Furthermore, the positional relationship between the replacement area and the sensitive area, and the degree of elastic pad deterioration are introduced to correct the extension correlation degree, resulting in a comprehensive correlation degree evaluation model. This comprehensive correlation degree evaluation model can be used to obtain the evaluation results for different replacement schemes.

[0017] This application creatively constructs an evaluation system for the applicability of elastic pad replacement methods in high-speed turnout areas, clarifies the selection principles for elastic pad replacement methods in high-speed turnout areas, realizes scientific quantitative evaluation and optimization of different elastic pad replacement methods in high-speed turnout areas, can comprehensively measure the advantages and disadvantages of replacement methods, and is conducive to providing quantifiable decision-making basis for on-site maintenance and repair, filling the gap in existing technology.

[0018] Furthermore, the primary evaluation indicators include: overall process difficulty, track start-up difficulty, replacement difficulty, additional difficulties, and special indicators for elastic pads. This scheme comprehensively evaluates the replacement difficulty of elastic pads in high-speed turnout areas from six maintenance perspectives, which is conducive to forming a more complete and comprehensive evaluation system.

[0019] Furthermore, the secondary evaluation indicators corresponding to the overall process difficulty include: replacement time and replacement scale. The replacement time indicator mainly reflects the complexity of the methods and the smoothness of the process involved in replacing the flexible replacement pads, assessing the total time required to complete the replacement, including the entire cycle of construction preparation, pad replacement, and subsequent adjustments. The shorter the time, the smaller the impact of the replacement on line operation. The replacement scale indicator mainly reflects the degree of dependence of the replacement method on manpower and equipment. The larger the replacement scale, the higher the complexity of the replacement operation and the higher the resource requirements, as well as the higher the requirements for efficiency and coordination.

[0020] The secondary evaluation indicators corresponding to the difficulty of track lifting include: track lifting height and track lifting difficulty. Track lifting height and track lifting difficulty represent the difficulty of track lifting control and operation, respectively. The track lifting height indicator is the track height that needs to be raised to ensure normal replacement of the track pad. A higher track lifting height increases the stress changes on the turnout component system and the difficulty of replacement. The track lifting difficulty indicator focuses on the complexity of equipment use and the requirements for operational skills during track lifting. Lower track lifting difficulty allows for simpler and more effective replacement methods.

[0021] The secondary evaluation indicators corresponding to the difficulty of the replacement implementation include: difficulty of replacing the pad and difficulty of removing components. The difficulty of replacing the pad describes the complexity of the pad disassembly and installation process, including the fixing method, the degree of space constraint, and the ease of tool use. The difficulty of removing components refers to the complexity of the procedures for removing the relevant components before replacing the pad and whether there is a risk of damage, all of which affect the replacement efficiency and cost.

[0022] The secondary evaluation indicators corresponding to the additional difficulties include: the degree of multi-disciplinary cooperation and the degree of structural optimization. Additional difficulty refers to the aspects of the replacement process that are not limited to the work of the track maintenance department, including whether multi-disciplinary cooperation is required and whether structural optimization measures are needed. The multi-disciplinary cooperation indicator assesses whether the replacement process involves coordination among multiple disciplines, such as the intervention of electrical or signaling systems, which increases the organizational difficulty and coordination costs of the replacement, and also increases the risks involved. The structural optimization indicator refers to the need to consider structural modifications and optimizations for high-speed turnouts and elastic pads where existing replacement methods cannot achieve the replacement goals. This results in a lack of scope in the existing replacement methods and significantly increases the difficulty of the replacement.

[0023] The secondary evaluation indicators corresponding to the special indicators of the elastic pad include: the positional relationship between the replacement area and the sensitive area, and the service life. The positional relationship between the replacement area and the sensitive area reflects the special nature of the high-speed turnout area located in the railway line. It is used to assess whether the elastic pad replacement area is adjacent to the sensitive area of ​​the turnout area (such as near the turnout switching equipment rods, frog throats, etc.). Sensitive areas may increase the restrictive requirements on the replacement method.

[0024] The secondary evaluation index corresponding to the service life includes the degree of deterioration of the elastic pad. Furthermore, through years of tracking and observation, the applicant has found that the rate of deterioration of the elastic mechanical properties of the rubber material used in the elastic pads of high-speed turnouts during long-term service is highly sensitive to the service life. Therefore, this solution also uses the degree of deterioration of the elastic pad as a secondary index to characterize the service life, further improving the comprehensiveness of the evaluation.

[0025] Furthermore, step S3 specifically includes:

[0026] S301. Establish a hierarchical analysis model; the hierarchical analysis model includes an objective layer, a criterion layer, and a solution layer;

[0027] S302. Construct the criterion layer judgment matrix;

[0028] S303 calculates the weights of each evaluation index based on the criterion-level judgment matrix and performs a consistency check.

[0029] It is easy to understand that the target layer in this scheme is the applicability evaluation of the elastic pad replacement method in the high-speed turnout area, the criterion layer is a hierarchical structure composed of primary evaluation indicators and secondary evaluation indicators, and the scheme layer is a number of alternative elastic pad replacement schemes.

[0030] The purpose of a judgment matrix is ​​to quantitatively assess the relative importance of various indicators. By comparing each criterion in a hierarchical structure with the next higher criterion, the relative weights of each indicator are clarified, progressing from local comparisons to constructing the overall weight relationships of the indicators. By constructing a judgment matrix, ambiguous subjective judgments in complex problems can be transformed into structured quantitative analysis, further providing fundamental support for weight calculation and optimal decision-making.

[0031] Furthermore, step S5 specifically includes:

[0032] S501. Establish the matter-element extension model to obtain the classical domain matter-element matrix and the section domain matter-element matrix;

[0033] S502. Calculate the extension correlation of each elastic pad replacement scheme.

[0034] This scheme uses the matter-element extension model to obtain the extension correlation degree of each elastic pad replacement scheme, and analyzes the advantages and disadvantages of each scheme to provide a scientific basis for multi-index evaluation problems. The matter-element extension model can be implemented using existing technology.

[0035] Furthermore, the classical domain matter-element matrix is:

[0036] ;

[0037] In the formula: R n Represents the classical domain matter-element matrix; n represents the nth evaluation level; B ij V represents the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; m Representative feature B ij The corresponding classical field; a m For V m The lower limit, b m For V m The upper limit;

[0038] The segmental matter-element matrix is:

[0039] ;

[0040] In the formula: R p Represents the domain matter-element matrix; V pm Representative feature B ij The corresponding section; a pm For V pm The lower limit, b pm For V pm The upper limit;

[0041] The extensional correlation degree is calculated using the following formula:

[0042] ;

[0043] In the formula: K ijn v represents the extensional correlation degree between the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator and the n-th evaluation level; m Representing B ij The value of; Represents the classical domain extension distance; The representative node can be extended.

[0044] Furthermore, the aforementioned , , Calculated using the following formula:

[0045] ;

[0046] ;

[0047] .

[0048] Furthermore, in step S6, the comprehensive correlation evaluation model is established as follows:

[0049] ;

[0050] In the formula: K n W represents the comprehensive correlation degree corresponding to the nth evaluation level; n represents the nth evaluation level; W ij Let be the weight of the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; This is a correction factor for the positional relationship between the replacement area and the sensitive area; Correction parameters for service life degradation of elastic pads; W 51 The weight representing the positional relationship between the replacement area and the sensitive area.

[0051] Due to the unique characteristics of high-speed turnout areas within high-speed railway lines, the impact of replacement operations on relevant sensitivities is amplified. In particular, the locational relationship with sensitive areas and the degree of deterioration of the elastic pads significantly affect the compatibility with different replacement methods. Therefore, this solution incorporates these two aspects into the selection of replacement methods, creatively designing a comprehensive correlation evaluation model. This approach helps improve the accuracy of evaluation results and obtain more suitable replacement methods.

[0052] This application fully considers the interrelationships and impacts of various evaluation indicators, which is conducive to formulating more reasonable evaluation weights and correlation indicators. Furthermore, the evaluation process is highly targeted and hierarchically linked, reflecting the replacement method of elastic pads in high-speed turnout areas onto specific evaluation indicators, making it easier to determine applicability and facilitating on-site guidance for maintenance and repair.

[0053] Furthermore, the correction coefficient for the positional relationship between the replacement area and the sensitive area. The value can be:

[0054] ;

[0055] In the formula: x is the track inspection index value of the sensitive area adjacent to the replacement area before the elastic pad is replaced; L p The threshold for Level I of the track detection index; L t For track detection indicators Level threshold; sigmoid represents the sigmoid function.

[0056] The track detection index values ​​in this scheme can be adaptively selected according to specific working conditions, such as track gauge and track alignment; their corresponding Level I thresholds, The threshold level can also be adaptively selected or set according to specific working conditions, and no specific limitation is made here.

[0057] Furthermore, the service life degradation correction parameters of the elastic pad Calculated using the following formula:

[0058] ;

[0059] In the formula: Y represents the influence coefficient; Y represents the actual service life of the elastic pad to be replaced; Y0 represents the set overhaul period; W 52 The weight of the indicator representing the service life of the elastic pad.

[0060] This scheme introduces the service life of the elastic pad in the secondary evaluation index to calculate the service life deterioration correction parameter of the elastic pad. It describes the deterioration law of the pad performance with the service life through an exponential decay method, which is conducive to accurately characterizing the impact of elastic pad deterioration on the replacement method.

[0061] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0062] 1. This invention provides an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas. It creatively constructs an evaluation system for the applicability of elastic pad replacement methods in high-speed turnout areas, clarifies the selection principles for elastic pad replacement methods in high-speed turnout areas, and realizes scientific quantitative evaluation and optimization of different elastic pad replacement methods in high-speed turnout areas. It can comprehensively measure the advantages and disadvantages of replacement methods, which is conducive to providing quantifiable decision-making basis for on-site maintenance and repair, and fills the gap in the existing technology.

[0063] 2. This invention provides an evaluation method for the applicability of the replacement method of elastic pads in high-speed turnout areas. It comprehensively evaluates the difficulty of replacing elastic pads in high-speed turnout areas from six maintenance aspects, which is conducive to forming a more complete and comprehensive evaluation system.

[0064] 3. This invention provides an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas. Based on the matter-element extension model, the extension correlation degree of each elastic pad replacement scheme is obtained, and the advantages and disadvantages of each scheme are analyzed in relation to each scheme, providing a scientific basis for multi-index evaluation problems.

[0065] 4. This invention provides an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas. It fully considers the interrelationships and influences of various evaluation indicators, which is beneficial for developing more reasonable evaluation weights and correlation indicators. Furthermore, the evaluation process is highly targeted and hierarchically linked, reflecting the elastic pad replacement method in high-speed turnout areas onto specific evaluation indicators, making it easier to determine applicability and facilitating on-site guidance for maintenance and repair.

[0066] 5. This invention provides an evaluation method for the applicability of elastic pad replacement methods in high-speed turnout areas. It adds consideration to the location relationship with sensitive areas and service life when selecting replacement methods, and creatively designs a comprehensive correlation evaluation model, which helps to improve the accuracy of evaluation results and obtain more applicable replacement methods. Attached Figure Description

[0067] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0068] Figure 1 This is a flowchart illustrating a specific embodiment of the present invention;

[0069] Figure 2 This is a schematic diagram of the hierarchical analysis model in a specific embodiment of the present invention. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are only for explaining this invention and are not intended to limit this invention.

[0071] Example 1:

[0072] like Figure 1 The evaluation method for the applicability of a method for replacing elastic pads in high-speed turnout areas includes the following steps:

[0073] Step S1: Screen the engineering indicators that affect the difficulty of replacing the elastic pads in the high-speed turnout area, and determine several primary evaluation indicators from the engineering indicators.

[0074] Step S2: Set several corresponding secondary evaluation indicators for each primary evaluation indicator. Specifically, in this embodiment:

[0075] This embodiment classifies the evaluation indicators for the replacement method of elastic pads in high-speed turnout areas, selecting five primary evaluation indicators: "overall process difficulty," "track start-up implementation difficulty," "replacement implementation difficulty," "additional difficulty," and "special indicators of elastic pads." Simultaneously, for each primary evaluation indicator, more detailed secondary evaluation indicators reflecting its characteristics are constructed, forming a complete and comprehensive evaluation system. There are a total of 10 secondary evaluation indicators, as detailed in Table 1.

[0076] Table 1. Evaluation Statistics of Elastic Pad Replacement Methods in High-Speed ​​Turnout Areas

[0077]

[0078] Step S3: Determine the weights of each primary and secondary evaluation indicator based on the analytic hierarchy process (AHP).

[0079] Specifically, it includes:

[0080] S301. Establish a hierarchical analysis model, such as... Figure 2 As shown;

[0081] S302. Constructing the Criterion Layer Judgment Matrix. The judgment matrix quantifies the relative importance of each indicator. In the hierarchical structure, a pairwise comparison method is used for each criterion belonging to the previous layer to clarify the relative weights of each indicator, gradually building the overall weight relationships of the indicators from local comparisons. By constructing the judgment matrix, the fuzzy subjective judgments in complex problems can be transformed into structured quantitative analysis, further providing fundamental support for weight calculation and optimal decision-making. Scaling is used to construct the judgment matrix, representing the degree of importance between two indicators. The meanings of each level of scaling in this embodiment are shown in Table 2.

[0082] Table 2. Meaning of Scale Method

[0083]

[0084] The values ​​of each element in the judgment matrix are determined using a 1-9 digit scaling method, primarily through expert evaluation or derived from historical data. The judgment matrix can be used to determine the relative importance between any two evaluation indicators of the same level.

[0085] S303 calculates the weights of each evaluation index based on the criterion-level judgment matrix and performs a consistency check.

[0086] The vectors in the obtained judgment matrix are normalized, and the weights of the indicators are calculated as follows:

[0087] ;

[0088] In the formula: W i This is the obtained feature vector, which in this embodiment represents the weight of the i-th primary evaluation index; a ii’ The relative importance of indicator i compared to indicator i' is represented by y; y represents the number of factors involved in the comparison among the primary indicators, which is set to 5 in this primary evaluation indicator for the applicability of the elastic pad replacement method.

[0089] Due to the ambiguity and complexity of human subjective judgment, the judgment matrix may be inconsistent. Therefore, it is necessary to perform a consistency check on the obtained judgment matrix. The consistency index CI is calculated using the following formula:

[0090]

[0091] In the formula: It represents the largest eigenvalue of each primary indicator judgment matrix.

[0092] Recalculate the consistency ratio (CR):

[0093] ;

[0094] In the formula: RI is the average random consistency index, which can be obtained from the table:

[0095] Table 3 Average Random Consistency Index

[0096]

[0097] If CR > 0.1, it indicates that the previously obtained judgment matrix has poor consistency and is not convincing; the judgment matrix should be reconstructed. If CR ≤ 0.1, the consistency of the previously obtained judgment matrix is ​​considered to be within an acceptable range, the consistency test is passed, and the calculated eigenvector W can be used. i As the weight vector of the primary indicators at each level.

[0098] Similarly, the weight vector of each secondary indicator is calculated under each primary indicator, and the calculation formula is as follows:

[0099]

[0100] In the formula: W j This is the obtained feature vector, which in this embodiment represents the weight of the j-th secondary evaluation indicator under a certain level of evaluation index; a jj’The value of index j represents the degree of importance of secondary index j compared to index j'; z represents the number of secondary indexes participating in the comparison factors under a certain primary evaluation index, which is taken as 2 in this secondary evaluation index regarding the applicability of the elastic pad replacement method.

[0101] The consistency index CI' is calculated using the following formula:

[0102]

[0103] In the formula: It represents the largest eigenvalue of the judgment matrix of each secondary indicator under a certain level of evaluation index.

[0104] The final weight vector for each secondary indicator under the overall evaluation is as follows:

[0105]

[0106] In the formula: W ij This is the weight vector of the secondary indicators under the overall evaluation.

[0107] Step S4: Prepare several elastic pad replacement schemes to be evaluated, and obtain the primary evaluation index and secondary evaluation index corresponding to each elastic pad replacement scheme.

[0108] Step S5: Determine the extension correlation degree of each elastic pad replacement scheme based on the matter-element extension model.

[0109] Specifically, it includes:

[0110] S501. Establish the matter-element extension model to obtain the classical domain matter-element matrix and the section domain matter-element matrix;

[0111] S502. Calculate the extension correlation of each elastic pad replacement scheme.

[0112] The matter-element model is the basic unit for describing the attributes and characteristics of things. Its basic model is a triple: R=(N,B,V), where N is the evaluation level, B is the evaluation index, and V is the classical domain or section domain of the index value.

[0113] In this embodiment, the classical domain matter-element matrix is:

[0114] ;

[0115] In the formula: R n Represents the classical domain matter-element matrix; n represents the nth evaluation level; B ij V represents the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; m Representative feature B ij The corresponding classical field; a m For V m The lower limit, bm For V m The upper limit.

[0116] In this embodiment, the nodal matter-element matrix is:

[0117] ;

[0118] In the formula: R p Represents the domain matter-element matrix; V pm Representative feature B ij The corresponding section; a pm For V pm The lower limit, b pm For V pm The upper limit.

[0119] In this embodiment, the extension correlation degree is calculated using the following formula:

[0120] ;

[0121] In the formula: K ijn v represents the extensional correlation degree between the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator and the n-th evaluation level; m Representing B ij The value of; Represents the classical domain extension distance; The representative node can be extended.

[0122] in, , , Calculated using the following formula:

[0123] ;

[0124] ;

[0125] .

[0126] Step S6: Based on the positional relationship index between the replacement area and the sensitive area, and the degradation degree index of the elastic pad, the extension correlation degree is corrected, and a comprehensive correlation degree evaluation model is established.

[0127] The comprehensive correlation evaluation model established in this embodiment is as follows:

[0128] ;

[0129] In the formula: K n W represents the comprehensive correlation degree corresponding to the nth evaluation level; n represents the nth evaluation level; W ij Let be the weight of the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; This is a correction factor for the positional relationship between the replacement area and the sensitive area; Correction parameters for service life degradation of elastic pads; W 51 The weight representing the positional relationship between the replacement area and the sensitive area.

[0130] Among them, the correction coefficient for the positional relationship between the replacement area and the sensitive area The value can be:

[0131] ;

[0132] In the formula: x is the track inspection index value of the sensitive area adjacent to the replacement area before the elastic pad is replaced; L p The threshold for Level I of the track detection index; L t For track detection indicators Level threshold; sigmoid represents the sigmoid function.

[0133] Preferably, the track detection index values ​​can refer to the relevant dynamic and static indicators of the turnout area specified in TG_GW115-2023 "High-Speed ​​Railway Line Maintenance Rules"; the corresponding Level I threshold, The threshold values ​​can also be referenced from the corresponding Level I and Level II limits in this standard.

[0134] Among them, the service life deterioration correction parameter of the elastic pad Calculated using the following formula:

[0135] ;

[0136] In the formula: Y represents the influence coefficient; Y represents the actual service life of the elastic pad to be replaced; Y0 represents the set overhaul period; W 52 The weight of the indicator representing the service life of the elastic pad.

[0137] S7. Obtain the comprehensive correlation of each elastic pad replacement scheme, sort them, and output the evaluation results.

[0138] This embodiment compares and ranks all evaluation results based on the magnitude of the comprehensive correlation. For any elastic pad replacement scheme, the one with the highest comprehensive correlation at a certain evaluation level indicates a high degree of conformity between the replacement scheme and that evaluation level. For the same evaluation level, the scheme with the higher the comprehensive correlation value indicates a stronger correlation and is a better scheme.

[0139] It should be noted that in the process of calculating the comprehensive correlation degree, evaluation objects and evaluation indicators that are not clearly quantified can be fuzzified, for example, by classifying them into grades (excellent, good, average, poor) for quantification.

[0140] Example 2:

[0141] An evaluation system for the applicability of a method for replacing elastic pads in high-speed turnout areas, used to perform the evaluation method as described in Example 1, the system comprising:

[0142] Evaluation index module: used to determine several primary evaluation indexes from the engineering indicators that affect the difficulty of replacing elastic pads in high-speed turnout areas; and to construct several corresponding secondary evaluation indexes for each primary evaluation index.

[0143] Weight determination module: used to determine the weights of each primary and secondary evaluation indicator based on the analytic hierarchy process (AHP);

[0144] Input module: Used to input several elastic pad replacement schemes to be evaluated, and to input the primary evaluation index and secondary evaluation index corresponding to each elastic pad replacement scheme;

[0145] The first calculation module is used to determine the extension correlation of each elastic pad replacement scheme based on the matter-element extension model.

[0146] The second calculation module is used to correct the extension correlation degree based on the positional relationship index between the replacement area and the sensitive area and the deterioration degree index of the elastic pad, and to establish a comprehensive correlation degree evaluation model.

[0147] Output module: Used to obtain the comprehensive correlation of each elastic pad replacement scheme, sort them, and output the evaluation results.

[0148] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0149] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A method for evaluating the applicability of a method for replacing elastic pads in high-speed turnout areas, characterized in that, Includes the following steps: S1. Screen the engineering indicators that affect the difficulty of replacing the elastic pads in the high-speed turnout area, and determine several primary evaluation indicators from the engineering indicators. S2. Set up several corresponding secondary evaluation indicators for each primary evaluation indicator; S3. Determine the weights of each primary and secondary evaluation indicator based on the analytic hierarchy process (AHP). S4. Prepare several elastic pad replacement schemes to be evaluated, and obtain the primary and secondary evaluation indicators corresponding to each elastic pad replacement scheme. S5. Determine the extension correlation degree of each elastic pad replacement scheme based on the matter-element extension model; S6. Based on the positional relationship index between the replacement area and the sensitive area and the deterioration index of the elastic pad, the extension correlation degree is corrected, and a comprehensive correlation degree evaluation model is established. S7. Obtain the comprehensive correlation of each elastic pad replacement scheme, sort them, and output the evaluation results.

2. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 1, characterized in that, The primary evaluation indicators include: overall process difficulty, initial implementation difficulty, replacement implementation difficulty, additional difficulty, and special indicators for elastic pads.

3. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 2, characterized in that, The secondary evaluation indicators corresponding to the overall process difficulty include: replacement time and replacement scale; The secondary evaluation indicators corresponding to the difficulty of track lifting include: track lifting height and track lifting difficulty; The secondary evaluation indicators corresponding to the difficulty of the replacement implementation include: difficulty of replacing the pad and difficulty of removing the parts; The secondary evaluation indicators corresponding to the additional difficulty include: the degree of multi-disciplinary cooperation and the degree of structural optimization. The secondary evaluation indicators corresponding to the special indicators of the elastic pad include: the positional relationship between the replacement area and the sensitive area, and the service life.

4. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 1, characterized in that, Step S3 specifically includes: S301. Establish a hierarchical analysis model; the hierarchical analysis model includes an objective layer, a criterion layer, and a solution layer; S302. Construct the criterion layer judgment matrix; S303 calculates the weights of each evaluation index based on the criterion-level judgment matrix and performs a consistency check.

5. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 1, characterized in that, Step S5 specifically includes: S501. Establish the matter-element extension model to obtain the classical domain matter-element matrix and the section domain matter-element matrix; S502. Calculate the extension correlation of each elastic pad replacement scheme.

6. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 5, characterized in that, The classical domain matter-element matrix is: ； In the formula: R n Represents the classical domain matter-element matrix; n represents the nth evaluation level of the partition; B ij V represents the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; m Representative feature B ij The corresponding classical field; a m For V m The lower limit, b m For V m The upper limit; The segmental matter-element matrix is: ； In the formula: R p Represents the domain matter-element matrix; V pm Representative feature B ij The corresponding section; a pm For V pm The lower limit, b pm For V pm The upper limit; The extensional correlation degree is calculated using the following formula: ； In the formula: K ijn v represents the extensional correlation degree between the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator and the n-th evaluation level; m Representing B ij The value of; Represents the classical domain extension distance; The representative node can be extended.

7. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 6, characterized in that, The , , Calculated using the following formula: ； ； 。 8. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 1, characterized in that, In step S6, the comprehensive correlation evaluation model is established as follows: ； In the formula: K n This represents the comprehensive correlation degree corresponding to the nth evaluation level; n represents the nth evaluation level. W ij Let be the weight of the j-th secondary evaluation indicator corresponding to the i-th primary evaluation indicator; This is a correction factor for the positional relationship between the replacement area and the sensitive area; Correction parameters for service life degradation of elastic pads; W 51 The weight representing the positional relationship between the replacement area and the sensitive area.

9. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 8, characterized in that, The correction coefficient for the positional relationship between the replacement area and the sensitive area The value can be: ； In the formula: x is the track inspection index value of the sensitive area adjacent to the replacement area before the elastic pad is replaced; L p The threshold for Level I of the track detection index; L t For track detection indicators Level threshold; sigmoid represents the sigmoid function.

10. The evaluation method for the applicability of the elastic pad replacement method in high-speed turnout areas according to claim 8, characterized in that, The service life degradation correction parameter of the elastic pad Calculated using the following formula: ； In the formula: Y represents the influence coefficient; Y represents the actual service life of the elastic pad to be replaced; Y0 represents the set overhaul period; W represents the influence coefficient. 52 The weight representing the service life index of the elastic pad.

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