Method and device for comprehensive evaluation of fine measurement and fine tamping operation effect

Abstract

The application discloses a kind of fine measurement fine tamping operation effect comprehensive evaluation method and device, the method includes: determining the target layer of fine measurement fine tamping effect comprehensive evaluation system;Determine criterion layer under the target layer, the criterion layer is expressed using comprehensive evaluation item, wherein fine measurement fine tamping effect comprehensive evaluation domain corresponds multiple comprehensive evaluation items;Determine index layer under the criterion layer, the index layer is expressed using evaluation index, wherein each comprehensive evaluation item corresponds multiple evaluation indexes;Determine the grade division standard of each evaluation index;Determine the weight value of each comprehensive evaluation item, the weight value of evaluation index, determine fine measurement fine tamping effect comprehensive evaluation relationship model;After obtaining fine measurement fine tamping operation data, obtain the score of each evaluation index of the fine measurement fine tamping operation data, and input to fine measurement fine tamping effect comprehensive evaluation relationship model, obtain the evaluation result of the fine measurement fine tamping operation.The application carries out comprehensive analysis and evaluation to the effect of different fine measurement fine tamping operation mode maintenance.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a method and apparatus for comprehensive evaluation of the effect of precision measurement and tamping operations. Background Technology

[0002] This section is intended to provide background or context for the embodiments of the invention set forth in the claims. The description herein is not an admission that it is prior art simply because it is included in this section.

[0003] In recent years, drawing on the experience of high-speed railway ballast track maintenance, technologies such as precision track measurement and large-scale precision tamping have been introduced into operating conventional railways to effectively improve track geometry and enhance the quality of conventional railway line equipment. With the continuous promotion and application of precision track measurement and tamping technologies, the quality of line equipment has been significantly improved. More than ten precision measurement methods are used across the railway network, including inertial navigation trolleys, inertial navigation trolleys + GNSS, and inertial navigation trolleys + CPⅢ, and more than ten tamping operation modes have also been adopted. However, the application of precision measurement and tamping in the field is diverse, with varying methods and inconsistent tamping efficiency and quality. Furthermore, there is a lack of scientific guidance on the application and evaluation of these operation modes.

[0004] Currently, the evaluation of tamping operation effectiveness mainly relies on dynamic track inspection vehicle data to compare and analyze the changes in TQI before and after tamping operation. The evaluation method is relatively simple and lacks systematic and comprehensive evaluation means. Summary of the Invention

[0005] This invention provides a comprehensive evaluation method for the effect of precision measurement and tamping operations, which can comprehensively analyze and evaluate the effects of different precision measurement and tamping operation modes after maintenance. The method includes:

[0006] Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping.

[0007] A criterion layer is determined under the target layer. The criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items.

[0008] A criterion layer is determined below the criterion layer. The criterion layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators.

[0009] Determine the grading criteria for each evaluation indicator;

[0010] Determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and determine the comprehensive evaluation relationship model of the precision measurement and compaction effect;

[0011] After obtaining the precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, the score of each evaluation indicator of the precision measurement and tamping operation data is obtained, and then input into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation.

[0012] This invention provides a comprehensive evaluation device for the effect of precision measurement and tamping operations, capable of comprehensively analyzing and evaluating the effects of different precision measurement and tamping operation modes after maintenance. The device includes:

[0013] The module for constructing a comprehensive evaluation system for the effects of precision measurement and compaction is used for:

[0014] Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping.

[0015] A criterion layer is determined under the target layer. The criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items.

[0016] A criterion layer is determined below the criterion layer. The criterion layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators.

[0017] The grading standard determination module is used to determine the grading standard for each evaluation indicator;

[0018] The module for determining the comprehensive evaluation relationship model of the fine measurement and tamping effect is used to determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and to determine the comprehensive evaluation relationship model of the fine measurement and tamping effect.

[0019] The evaluation and analysis module is used to obtain the score of each evaluation indicator of the precision measurement and tamping operation data after obtaining the precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, and input it into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation.

[0020] This invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the above-mentioned comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0021] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0022] This invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the above-mentioned comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0023] In this embodiment of the invention, a target layer of the comprehensive evaluation system for the effect of precision measurement and tamping is determined, and the target layer is represented by a comprehensive evaluation domain for the effect of precision measurement and tamping; a criterion layer is determined under the target layer, and the criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain for the effect of precision measurement and tamping corresponds to multiple comprehensive evaluation items; an indicator layer is determined under the criterion layer, and the indicator layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators; a grade classification standard for each evaluation indicator is determined; the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined, and a comprehensive evaluation relationship model for the effect of precision measurement and tamping is determined; after obtaining the precision measurement and tamping operation data, based on the grade classification standard of each evaluation indicator, the score of each evaluation indicator of the precision measurement and tamping operation data is obtained, and input into the comprehensive evaluation relationship model for the effect of precision measurement and tamping to obtain the evaluation result of the precision measurement and tamping operation. Compared with existing technologies that mainly rely on dynamic track inspection vehicle data to compare and analyze TQI changes before and after tamping operations, resulting in a relatively simple evaluation method and a lack of systematic and comprehensive evaluation means, this invention compares the quality of operations under different modes based on multiple different indicators. This avoids the current situation of simply relying on the improvement rate of TQI before and after tamping for evaluation, provides a basis for scientifically formulating maintenance strategies on site, and has certain practical significance for on-site operation evaluation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0025] Figure 1 This is a flowchart of the comprehensive evaluation method for the effect of precision measurement and tamping operations in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the comprehensive evaluation system for the precision measurement and compaction effect in an embodiment of the present invention;

[0027] Figure 3 A cumulative distribution map of TQI improvement rate for lines of different speed levels in this embodiment of the invention is drawn;

[0028] Figure 4 A cumulative distribution map of the unit TQI improvement rate for lines of different speed levels in the embodiments of the present invention is drawn;

[0029] Figure 5 A cumulative distribution map of track quality degradation rate for lines of different speed levels in the embodiments of the present invention is drawn.

[0030] Figure 6 The distribution of standard deviations of vertical and lateral tamping of the vehicle body after tamping in this embodiment of the invention;

[0031] Figure 7 A schematic diagram of the comprehensive evaluation device for the effect of precision measurement and tamping operations in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of a computer device in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0034] The inventors believe that the comprehensive evaluation of the effectiveness of precision measurement and tamping operations should consider different evaluation indicators, establish a quality evaluation system for precision measurement and tamping operations, and analyze and evaluate the operational effects of different measurement methods, different tamping modes, and different operating units to provide support for the scientific formulation of maintenance strategies. This invention employs the analytic hierarchy process (AHP), comprehensively considering four aspects: track quality status, wavelength improvement degree, track quality tracking, and vehicle response status, and proposes a comprehensive evaluation method for the effectiveness of precision measurement and tamping operations. It comprehensively evaluates the effects of different maintenance operation modes, scientifically guides the selection of on-site operation modes, improves operational efficiency and quality, and provides rational suggestions for promoting the application of precision measurement and tamping in conventional railway tracks.

[0035] Track precision measurement and tamping is based on control networks and precision measurement technology to measure the track, optimize the alignment using the measurement results, and formulate a tamping plan. Large track maintenance machinery then performs digital precision tamping operations according to the plan. Its main purpose is to effectively improve the track geometry in sections while restoring the track alignment and improving the quality of ballasted track equipment. To effectively and comprehensively evaluate its operational effectiveness, a comprehensive evaluation index system for precision measurement and tamping effects has been established, the details of which are shown in Table 1.

[0036] Track quality status evaluation reflects the direct effect of precision measurement and tamping operations based on the current track quality status after tamping. Wavelength improvement is reflected by comparing the energy improvement in different wavelength ranges before and after tamping, including elevation and track alignment, indicating the effect of precision measurement and tamping on track alignment improvement. Long-term track quality status tracking reflects the track quality maintenance effect after precision measurement and tamping. Vehicle response status reflects the degree of comfort after precision measurement and tamping by assessing the deviation of peak vehicle acceleration after tamping and the standard deviation of lateral and vertical acceleration.

[0037] Figure 1 This is a flowchart of the comprehensive evaluation method for the effect of precision measurement and tamping operations in an embodiment of the present invention, such as... Figure 1 As shown, the method includes:

[0038] Step 101: Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping;

[0039] Step 102: Determine the criterion layer under the target layer. The criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items.

[0040] Step 103: Determine the indicator layer under the criterion layer. The indicator layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators.

[0041] Step 104: Determine the grading criteria for each evaluation indicator;

[0042] Step 105: Determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and determine the comprehensive evaluation relationship model of the precision measurement and compaction effect;

[0043] Step 106: After obtaining the precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, obtain the score of each evaluation indicator of the precision measurement and tamping operation data, and input it into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation.

[0044] In this embodiment of the invention, compared with the existing technology which mainly relies on dynamic track inspection vehicle detection data to compare and analyze the changes in TQI before and after tamping operations, and whose evaluation method is relatively simple and lacks systematic and comprehensive evaluation means, this invention compares the quality of operations under different modes based on multiple different indicators. This avoids the current situation of simply relying on the improvement rate of TQI before and after tamping for evaluation, provides a basis for scientifically formulating maintenance strategies on site, and has certain practical significance for on-site operation evaluation.

[0045] Figure 2 This is a schematic diagram of the comprehensive evaluation system for the precision measurement and compaction effects in an embodiment of the present invention. See also... Figure 2Track precision measurement and tamping is based on control networks and precision measurement technology to measure the track, optimize the alignment using the measurement results, and formulate a tamping plan. Large track maintenance machinery then performs digital precision tamping operations according to the plan. Its main purpose is to effectively improve the track geometry in sections while restoring the track alignment and improving the quality of ballasted track equipment. To effectively and comprehensively evaluate its operational effectiveness, a comprehensive evaluation system for precision measurement and tamping effects has been established, the details of which are shown in Table 1.

[0046] Table 1. Comprehensive Evaluation System for Precision Measurement and Compaction Effects

[0047]

[0048] In one embodiment, the comprehensive evaluation items include track quality status B1, wavelength improvement degree B2, track quality tracking B3, and vehicle response status B4;

[0049] A criterion layer is determined below the target layer, and the criterion layer is represented by comprehensive evaluation terms, including:

[0050] The determination of the track quality status indicates the direct effect of the precision measurement and tamping operation;

[0051] The degree of improvement in wavelength (by comparing the degree of energy improvement in different wavelength ranges before and after tamping, in terms of elevation and track direction) is used to indicate the effect of precision measurement and tamping on the alignment improvement.

[0052] The adoption of track quality tracking indicates the effectiveness of track quality retention after precision measurement and tamping.

[0053] The degree of comfort after fine tamping is determined by the vehicle response state (the deviation of the peak acceleration of the vehicle body after tamping and the standard deviation of the lateral and vertical acceleration of the vehicle body).

[0054] For different evaluation indicators at the indicator level, based on existing management standards or a large amount of statistical data, these indicators are divided into multiple levels. For example, they can be divided into six levels, with scores of A (100 points), B (80 points), C (60 points), D (40 points), E (20 points), and F (0 points). After assigning scores to each evaluation indicator, the average value is taken as the score for a certain work section or work mode.

[0055] In one embodiment, the evaluation indicators corresponding to the track quality status include TQI improvement rate C1, TQI compliance rate C2, and unit TQI improvement rate C3;

[0056] A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including:

[0057] The TQI improvement rate was determined to represent the effectiveness of large-scale tamping operations;

[0058] The unit TQI improvement rate is determined to represent the effect of large-scale tamping operation in eliminating the influence of track quality before tamping;

[0059] The TQI compliance rate is used to represent the quality of tamping operations performed by large machinery.

[0060] In practice, the Track Quality Index (TQI) is an evaluation index that describes the geometric quality of a section of track. It is the sum of the standard deviations of seven track geometric parameters over a 200m section, and the calculation formula is as follows.

[0061]

[0062] In the formula, σ i The standard deviation of the 200m test data for seven irregularities (i = 1, 2, ..., 7) is given by: left elevation, right elevation, left track alignment, right track alignment, track gauge, level, and triangular pit.

[0063] Large-scale tamping machinery performs digital tamping maintenance on railway lines, eliminating irregularities such as unevenness and track alignment in sections of ballast track, resulting in a significant reduction in TQI. Therefore, the TQI improvement rate is defined to describe the effect of large-scale tamping operations, as shown in formula (2). Cumulative distribution maps of the TQI improvement rates for lines of different speed levels are plotted, as shown in... Figure 3 As shown, the TQI improvement rate distribution varies little among different line speed levels. Therefore, a unified standard is used to classify different line speed levels, as detailed in Tables 2 and 3. Table 2 shows the TQI improvement rate distribution, and Table 3 shows the level classification standard.

[0064]

[0065] In the formula, TQI bf TQI before tamping, mm; TQI af TQI after tamping, mm.

[0066] Table 2. Distribution of TQI Improvement Rate

[0067] Cumulative percentage (%) TQI Improvement Rate 90 44 80 38 70 33 60 28 50 25 40 20 30 17 20 10 10 5

[0068] Table 3. Classification Standards for TQI Improvement Rate Evaluation Indicators

[0069]

[0070] Through extensive data analysis, it was found that the TQI improvement rate is related to the track quality before tamping. The worse the track quality before tamping, the easier it is to obtain a higher TQI improvement rate. In order to eliminate the influence of the track quality before tamping, the unit TQI improvement rate was proposed as an auxiliary evaluation index, as shown in formula (3). Cumulative distribution maps of the unit TQI improvement rate for different speed levels were plotted, as shown in formula (3). Figure 4 As shown, the distribution of unit TQI improvement rate varies greatly among different line speed levels. Therefore, the unit TQI improvement rate is classified according to the line classification standard of different speed levels. The standard value is rounded up / down to an integer multiple of 0.5, as shown in Tables 4 and 5.

[0071]

[0072] Table 4. Distribution of Improvement Rate per Unit TQI

[0073]

[0074]

[0075] Table 5. Classification Standards for Evaluation Indicators of Unit TQI Improvement Rate

[0076]

[0077] Existing standards have refined the TQI evaluation and management standards, and have established acceptance control standards for large-scale track maintenance machinery tamping and engineering construction operations for conventional railway lines at speed levels of 80, 120, and 160 km / h, as shown in Table 6. A TQI compliance rate is proposed as an evaluation indicator for accepting the quality of large-scale tamping operations, as shown in the following formula. The TQI compliance rate score is converted into a corresponding percentage based on the compliance rate value.

[0078]

[0079] In the formula, n is the number of sections whose TQI after tamping is less than the acceptance management value; N is the total number of maintenance sections.

[0080] Table 6 TQI Acceptance Values ​​for Conventional Railway Lines

[0081] Speed ​​rating (km / h) <![CDATA[v max ≤80]]> <![CDATA[80<v max ≤120]]> <![CDATA[120<v max ≤160]]> Work acceptance management (mm) 9 7 5

[0082] In one embodiment, the evaluation index corresponding to the degree of wavelength improvement includes the high and low wavelength energy improvement rate C4 and the orbital wavelength energy improvement rate C5;

[0083] A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including:

[0084] The high and low wavelength energy improvement rates were determined to be used to analyze the frequency domain spectrum of the large machine tamping operation before, after, to the left and right, and at different heights.

[0085] The track-direction wavelength energy improvement rate was determined, and the frequency domain spectrum of the track in the left and right directions before and after the tamping operation of the large machine was analyzed.

[0086] In practical implementation, based on the data from large-scale tamping operations and wavelet analysis theory, an evaluation index for large-scale tamping operations that considers wavelength factors—the Energy Improvement Rate (EIR)—was proposed. This index was then used to analyze the improvement effects of different precision measurement and tamping combination operation modes on track alignment. The specific process is as follows:

[0087] By analyzing the improvement wavelength range of the left-right height and left-right track direction irregularities at 70m wavelength before and after tamping, the wavelength range was divided into 5 layers, with corresponding bands of 4-8m, 8-16m, 16-32m, 32-64m, and 64-128m. Then, wavelet analysis theory was used to extract the energy spectrum of left-right height and left-right track direction irregularities, and the mean value of the energy signal was used as the irregularity energy value corresponding to each wavelength segment. The specific irregularity energy extraction process is as follows.

[0088] Assuming the track irregularity signal is represented by x(t), the wavelet basis function is represented by ψ(t), and Morlet wavelets are chosen as the wavelet basis, then...

[0089]

[0090] In the formula, β is the width of the wavelet window. t is the time series.

[0091] The above equation is the definition of the Morlet wavelet. However, when processing real signals, the real part is generally used as the wavelet basis, in which case we have:

[0092]

[0093] Expanding the function x(t) under a wavelet basis, i.e., performing a continuous wavelet transform on this function, yields the wavelet transform coefficients WT. x (γ,τ), the expression is as follows:

[0094]

[0095] In the formula, WT x (γ,τ) are wavelet transform coefficients; γ is the scaling factor; t is the time series; τ is the translation factor; is the conjugate function of the wavelet basis.

[0096] Let parameter C ψ for

[0097]

[0098] In the formula, C ψ ψ(ω) represents the allowable condition for wavelets; ψ(ω) represents the Fourier transform of the wavelet basis function ψ(t); and ω represents the angular frequency.

[0099] Since wavelet transform has an isochronous effect, meaning that the function x(t) is energy-conserved in the wavelet transform, the energy in both the time domain and the wavelet domain is conserved, which leads to the following:

[0100]

[0101] From the above formula, we can see that if |WT x (γ,τ)| 2 Viewed as a scale map of the signal, it can be considered as the energy distribution with scale γ and displacement τ. Furthermore, it can be seen that the weighted integral of the square of the amplitude of the wavelet transform coefficients on the (γ,τ) plane is equal to the total energy of the signal in the time domain.

[0102] Using the energy extraction method described above, after obtaining the track irregularity energy in each band, the frequency domain spectrum of the track before and after tamping operations, as well as the left and right elevation and lateral track alignment, is analyzed in conjunction with the frequency domain evaluation index EIR. This allows us to obtain the improvement in track irregularity energy under different operating modes. The formula for calculating the EIR evaluation index is:

[0103]

[0104] In the formula, EIR is the energy variation index of orbital irregularities; Δλ ij λ represents the difference in irregularity energy within each wavelength segment before and after the tamping operation by the large machine; ij The values ​​of irregularities in each wavelength segment before tamping operation by a large machine; ω ij The weights are for different wavelength segments; m is the number of wavelength segments; n is the number of track irregularities calculated for each operating mode.

[0105] Based on dynamic track inspection data, frequency domain analysis was used to analyze the improvement effect of precision measurement and tamping on track alignment. By analyzing the frequency domain spectrum of elevation and track orientation before and after tamping in certain sections, the improvement degree of different operation modes on different wavelength components was compared and evaluated, and a standard for classifying wavelength energy improvement rate evaluation index was formed, as detailed in Table 7.

[0106] Table 7. Evaluation Index Classification Standards for Wavelength Energy Improvement Rate

[0107]

[0108] In one embodiment, the evaluation index corresponding to track quality tracking includes the TQI degradation rate C6;

[0109] A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including:

[0110] The TQI degradation rate is determined to represent the ability to maintain the orbital state.

[0111] In practice, different maintenance operation modes result in varying degrees of improvement in track geometry and ballast mechanical properties, leading to different track quality maintenance capabilities. The track quality deterioration rate reflects this capability. The track quality deterioration rate is a function of time, representing the rate of change in track geometry between two tamping cycles, expressed in mm / month. The track quality deterioration rate for each 200m section within a tamping cycle is calculated using the following formula.

[0112]

[0113] In the formula, k is the track quality deterioration rate within the same tamping cycle, in mm / month; x i Let t be the value of the track geometric irregularity detected in the i-th time, in mm; i d represents the time interval between the i-th detection and the (i+1)-th detection (through the total overlap interval); N represents the number of valid detections.

[0114] Cumulative distribution maps of track quality degradation rates were plotted for lines of different speed ratings, such as... Figure 5 As shown, the distribution of track quality deterioration rate varies greatly among different line speed levels. Therefore, the track quality deterioration rate is classified according to the line classification standard of different speed levels. The standard value is rounded up / down to an integer multiple of 0.5, as shown in Tables 8 and 9.

[0115] Table 8. Distribution of TQI degradation rate

[0116] Cumulative percentage (%) 80 and below 80 (excluding) to 120 120 (excluding) to 160 90 0.67 0.52 0.36 80 0.46 0.35 0.23 70 0.34 0.26 0.17 60 0.26 0.20 0.13 50 0.20 0.16 0.10 40 0.15 0.12 0.08 30 0.11 0.09 0.06 20 0.07 0.06 0.04 10 0.04 0.03 0.02

[0117] Table 9. Classification Standards for TQI Degradation Rate Evaluation Indicators

[0118]

[0119] In one embodiment, the evaluation indicators corresponding to the vehicle response status include peak deviation exceeding the limit C7, vehicle body lateral standard deviation C8, and vehicle body vertical standard deviation C9;

[0120] A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including:

[0121] The peak deviation exceeding the limit, the standard deviation of the car body lateral and the standard deviation of the car body vertical are used to represent the improvement effect of precision measurement and tamping on train running comfort.

[0122] In practice, the improvement effect of the vehicle dynamic response and precise tamping operation on the train running comfort is evaluated by calculating the standard deviation of the transverse and vertical sides of the car body for each 200m unit after the tamping operation and classifying them into different levels. Figure 6 The standard deviation distribution of vertical and horizontal tamping of the vehicle body in this embodiment of the invention.

[0123]

[0124]

[0125] In the formula, LACC is the standard deviation of the vehicle body lateral movement, and VCC is the standard deviation of the vehicle body vertical movement.

[0126] x i Let i be the i-th data point of the vehicle body acceleration, where i = 1, 2, ..., N, and N = 800;

[0127] This represents the average acceleration of the vehicle body in the 200m section.

[0128] Currently, the dynamic evaluation of peak acceleration exceeding limits for vehicle bodies adopts a four-level management system: Level I is the daily maintenance standard, Level II is the planned maintenance standard, Level III is the temporary repair standard, and Level IV is the speed limit standard. The allowable deviation management values ​​for each level are shown in Table 10. Based on the statistical analysis of peak vertical and lateral acceleration deviations exceeding limits after tamping, Level III and Level IV exceedances are considered relatively serious, while Level II and above exceedances are rare. Therefore, they are classified into different scoring levels according to the degree and number of exceedances, as detailed in Tables 11 and 12.

[0129] Table 10 Permissible Deviation Management Values ​​for Vehicle Dynamic Response

[0130] project Ⅰ Ⅱ Ⅲ Ⅳ <![CDATA[Car body vertical vibration acceleration (m / s 2 )]]> 1.0 1.5 2.0 2.5 <![CDATA[Vehicle body lateral vibration acceleration (m / s 2 )]]> 0.6 0.9 1.5 2.0

[0131] Table 11. Distribution of Standard Deviations for Vertical and Transverse Acceleration of Vehicle Body after Tamping

[0132] Cumulative percentage (%) <![CDATA[Vehicle body lateral acceleration standard deviation (m / s 2 )]]> <![CDATA[Standard deviation of car body vertical acceleration (m / s 2 )]]> 90 0.18 0.26 80 0.10 0.16 70 0.08 0.13 60 0.07 0.11 50 0.06 0.10 40 0.05 0.09 30 0.05 0.08 20 0.04 0.07 10 0.04 0.06

[0133] Table 12 Classification Standards for Vehicle Response Status Evaluation Indicators

[0134]

[0135]

[0136] In one embodiment, the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined to establish a comprehensive evaluation relationship model for the effect of precision measurement and tamping, including:

[0137] The weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined by the analytic hierarchy process, and a hierarchical single ranking and consistency test are performed.

[0138] After the consistency test is successful, the comprehensive evaluation relationship model of the precision measurement and tamping effect is determined.

[0139] In practice, when using the analytic hierarchy process (AHP) to determine the weight values ​​of each comprehensive evaluation item in the criteria layer and the weight values ​​of each evaluation indicator in the indicator layer, a judgment matrix is ​​first constructed.

[0140] The Analytic Hierarchy Process (AHP) is used to determine the weight values ​​of each element in the criterion and indicator layers. A judgment matrix is ​​constructed using pairwise comparisons and a 9-point scale to indicate the ratio of the influence of two elements in the same layer on a certain element in the layer above, i.e., A = (μ...). ij ) n×n Let μ represent the judgment matrix between B and C. It can be seen that if μ... i and μ j The ratio of the influence on A is μ ij Then μ j and μ i The ratio of the influence on A is μ ji =1 / μ ij As shown in Table 13.

[0141] Table 13 9-point scale method

[0142]

[0143] Based on expert experience, the degree of influence of each factor in criterion layer B on target layer A is determined by pairwise comparison, and a judgment matrix is ​​constructed according to the 9-point scaling method, as shown below.

[0144]

[0145] Based on expert experience, the degree of influence of each factor in indicator layer C on criterion layer B is determined by pairwise comparison, and a judgment matrix is ​​constructed according to the 9-point scaling method, as shown below.

[0146]

[0147]

[0148]

[0149] Next, we will perform hierarchical single sorting and consistency checks.

[0150] The weights of each element are determined by hierarchical single sorting, resulting in a weight vector. Eigenvalue decomposition is used to find the largest eigenvalue of the judgment matrices A, B1, B2, and B4, and the corresponding normalized eigenvector is used as the weight vector, as shown in Table 14.

[0151] Table 14 Eigenvectors of the Judgment Matrix

[0152] Judgment Matrix Weight vector A <![CDATA[W A =[0.35,0.15,0.35,0.15]]]> <![CDATA[B1]]> <![CDATA[W B1 =[0.375,0.25,0.375]]]> <![CDATA[B2]]> <![CDATA[W B2 =[0.5,0.5]]]> <![CDATA[B4]]> <![CDATA[W B4 =[0.5,0.25,0.25]]]>

[0153] To determine the rationality of the weight allocation, a hierarchical single sort and consistency check of the weight vector are required. The check formula is as follows:

[0154] CR = CI / RI (18)

[0155] CI is the general consistency index of a matrix. The RI values ​​for different order judgment matrices are shown in Table 15.

[0156] CI=(λ max -n) / (n-1) (19)

[0157] Table 15. RI values ​​of the average random consistency index

[0158] order 1 2 3 4 5 6 7 8 RI 0 0 0.58 0.9 1.12 1.24 1.32 1.41

[0159] When the CR of the judgment matrix is ​​less than 0.1, or when the largest eigenvalue is consistent with the matrix order n, the judgment matrix is ​​considered to have good consistency; otherwise, the judgment matrix needs to be adjusted to satisfy consistency. Consistency checks were performed on matrices A and B1, and the results are shown in Table 16. B2 and B4 are second-order judgment matrices and do not require hierarchical single sorting or consistency checks; therefore, all judgment matrices satisfy the consistency requirements.

[0160] Table 16 Results of the Consistency Test of the Judgment Matrix

[0161] Judgment Matrix order <![CDATA[λ max ]]> CI RI CR A 4 4 0 0.9 0 <![CDATA[B1]]> 3 3 0 0.58 0 <![CDATA[B4]]> 3 3 0 0.58 0

[0162] In summary, through weight calculation and consistency testing of the decision-making and indicator layers, the comprehensive evaluation formula for the effect of precision measurement and compaction is as follows:

[0163]

[0164] By substituting the scores of each indicator into the comprehensive evaluation formula for the effect of fine measurement and tamping, a comprehensive score can be obtained, and comparisons can be made between different tamping operation sections or operation modes.

[0165] In one embodiment, the method further includes:

[0166] After obtaining precision measurement and tamping operation data under different measurement methods, different tamping modes, and different operating units, the evaluation results of each precision measurement and tamping operation are obtained.

[0167] The evaluation results of various precision measurement and tamping operations are compared to obtain the calculation results;

[0168] Based on the calculation results, a recommended method for precision measurement and tamping operations is generated. The recommended method includes at least one of the following: recommended measurement method, recommended tamping mode, and recommended operating unit.

[0169] The following is a specific embodiment to illustrate the specific application of the method proposed in this invention.

[0170] For conventional railways, there are currently six main tamping and stabilization operation modes used across the entire railway network: single tamping, single tamping + stabilization, single-pass double tamping + stabilization, single tamping + single tamping + stabilization + single tamping, and single tamping + stabilization + single tamping + stabilization. At the same time, different operation modes have different effects on improving track quality and ballast condition. Based on the analytic hierarchy process, a comprehensive evaluation of the effects of different precision measurement and tamping operation modes is conducted to provide support for the scientific formulation of maintenance strategies.

[0171] In the precision measurement and tamping test section, the inertial navigation trolley was used for measurement. For the six different tamping operation modes, the scores of different evaluation indicators were calculated and comprehensively scored to obtain the evaluation results, as shown in Table 17.

[0172] Table 17 Comprehensive Evaluation Table of Operational Effects of Different Tamping Modes

[0173]

[0174]

[0175] In summary, the method proposed in this embodiment of the invention involves: determining a target layer for the comprehensive evaluation system of precision measurement and tamping effects, where the target layer is represented by a comprehensive evaluation domain; determining a criterion layer under the target layer, where the criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain of precision measurement and tamping effects corresponds to multiple comprehensive evaluation items; determining an indicator layer under the criterion layer, where the indicator layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators; determining the grading standard for each evaluation indicator; determining the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer; and determining the comprehensive evaluation relationship model for precision measurement and tamping effects. After obtaining precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, the score of each evaluation indicator for the precision measurement and tamping operation data is obtained and input into the comprehensive evaluation relationship model for precision measurement and tamping effects to obtain the evaluation result of the precision measurement and tamping operation. Compared with existing technologies that mainly rely on dynamic track inspection vehicle data to compare and analyze TQI changes before and after tamping operations, resulting in a relatively simple evaluation method and a lack of systematic and comprehensive evaluation means, this invention compares the quality of operations under different modes based on multiple different indicators. This avoids the current situation of simply relying on the improvement rate of TQI before and after tamping for evaluation, provides a basis for scientifically formulating maintenance strategies on site, and has certain practical significance for on-site operation evaluation.

[0176] This invention also proposes a comprehensive evaluation device for the effect of precision measurement and tamping operations. Its principle is similar to that of the comprehensive evaluation method for the effect of precision measurement and tamping operations, and will not be described in detail here.

[0177] Figure 7 This is a schematic diagram of the comprehensive evaluation device for the effect of precision measurement and tamping operations in an embodiment of the present invention, including:

[0178] Module 701, which constructs a comprehensive evaluation system for the effects of precision measurement and compaction, is used for:

[0179] Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping.

[0180] A criterion layer is determined under the target layer. The criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items.

[0181] A criterion layer is determined below the criterion layer. The criterion layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators.

[0182] The grading standard determination module 702 is used to determine the grading standard for each evaluation indicator;

[0183] The module 703 for determining the comprehensive evaluation relationship model of the fine measurement and tamping effect is used to determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and to determine the comprehensive evaluation relationship model of the fine measurement and tamping effect.

[0184] The evaluation and analysis module 704 is used to obtain the score of each evaluation indicator of the precision measurement and tamping operation data after obtaining the precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, and input it into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation.

[0185] In one embodiment, the comprehensive evaluation items include track quality status, wavelength improvement degree, track quality tracking, and vehicle response status;

[0186] Module 701 of the comprehensive evaluation system for precision measurement and compaction effects is specifically used for:

[0187] The determination of the track quality status indicates the direct effect of the precision measurement and tamping operation;

[0188] Determining the degree of improvement using wavelength indicates the effect of precision measurement and tamping on improving the alignment.

[0189] The adoption of track quality tracking indicates the effectiveness of track quality retention after precision measurement and tamping.

[0190] The vehicle response status is determined to represent the degree of comfort after fine measurement and tamping.

[0191] In one embodiment, the evaluation indicators corresponding to the track quality status include TQI improvement rate, TQI compliance rate, and unit TQI improvement rate;

[0192] Module 701 of the comprehensive evaluation system for precision measurement and compaction effects is specifically used for:

[0193] The TQI improvement rate was determined to represent the effectiveness of large-scale tamping operations;

[0194] The unit TQI improvement rate is determined to represent the effect of large-scale tamping operation in eliminating the influence of track quality before tamping;

[0195] The TQI compliance rate is used to represent the quality of tamping operations performed by large machinery.

[0196] In one embodiment, the evaluation index corresponding to the degree of wavelength improvement includes the high and low wavelength energy improvement rate and the orbital wavelength energy improvement rate;

[0197] Module 701 of the comprehensive evaluation system for precision measurement and compaction effects is specifically used for:

[0198] The high and low wavelength energy improvement rates were determined to be used to analyze the frequency domain spectrum of the large machine tamping operation before, after, to the left and right, and at different heights.

[0199] The track-direction wavelength energy improvement rate was determined, and the frequency domain spectrum of the track in the left and right directions before and after the tamping operation of the large machine was analyzed.

[0200] In one embodiment, the evaluation index corresponding to track quality tracking includes TQI degradation rate;

[0201] Module 701 of the comprehensive evaluation system for precision measurement and compaction effects is specifically used for:

[0202] The TQI degradation rate is determined to represent the ability to maintain the orbital state.

[0203] In one embodiment, the evaluation indicators corresponding to the vehicle response status include peak deviation exceeding the limit, lateral standard deviation of the vehicle body, and vertical standard deviation of the vehicle body;

[0204] Module 701 of the comprehensive evaluation system for precision measurement and compaction effects is specifically used for:

[0205] The peak deviation exceeding the limit, the standard deviation of the car body lateral and the standard deviation of the car body vertical are used to represent the improvement effect of precision measurement and tamping on train running comfort.

[0206] In one embodiment, the module 703 for determining the comprehensive evaluation relationship model of the precision measurement and compaction effect is specifically used for:

[0207] The weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined by the analytic hierarchy process, and a hierarchical single ranking and consistency test are performed.

[0208] After the consistency test is successful, the comprehensive evaluation relationship model of the precision measurement and tamping effect is determined.

[0209] In one embodiment, the device further includes a recommendation module 705, configured to:

[0210] After obtaining precision measurement and tamping operation data under different measurement methods, different tamping modes, and different operating units, the evaluation results of each precision measurement and tamping operation are obtained.

[0211] The evaluation results of various precision measurement and tamping operations are compared to obtain the calculation results;

[0212] Based on the calculation results, a recommended method for precision measurement and tamping operations is generated. The recommended method includes at least one of the following: recommended measurement method, recommended tamping mode, and recommended operating unit.

[0213] In summary, in the apparatus proposed in this embodiment of the invention, a target layer of the comprehensive evaluation system for the effect of precision measurement and tamping is determined, and the target layer is represented by a comprehensive evaluation domain for the effect of precision measurement and tamping; a criterion layer is determined under the target layer, and the criterion layer is represented by comprehensive evaluation items, wherein the comprehensive evaluation domain for the effect of precision measurement and tamping corresponds to multiple comprehensive evaluation items; an indicator layer is determined under the criterion layer, and the indicator layer is represented by evaluation indicators, wherein each comprehensive evaluation item corresponds to multiple evaluation indicators; a grade classification standard for each evaluation indicator is determined; the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined, and a comprehensive evaluation relationship model for the effect of precision measurement and tamping is determined; after obtaining the precision measurement and tamping operation data, based on the grade classification standard of each evaluation indicator, the score of each evaluation indicator of the precision measurement and tamping operation data is obtained, and input into the comprehensive evaluation relationship model for the effect of precision measurement and tamping to obtain the evaluation result of the precision measurement and tamping operation. Compared with existing technologies that mainly rely on dynamic track inspection vehicle data to compare and analyze TQI changes before and after tamping operations, resulting in a relatively simple evaluation method and a lack of systematic and comprehensive evaluation means, this invention compares the quality of operations under different modes based on multiple different indicators. This avoids the current situation of simply relying on the improvement rate of TQI before and after tamping for evaluation, provides a basis for scientifically formulating maintenance strategies on site, and has certain practical significance for on-site operation evaluation.

[0214] This invention also provides a computer device. Figure 8This is a schematic diagram of a computer device in an embodiment of the present invention. The computer device 800 includes a memory 810, a processor 820, and a computer program 830 stored in the memory 810 and executable on the processor 820. When the processor 820 executes the computer program 830, it implements the above-mentioned comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0215] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0216] This invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the above-mentioned comprehensive evaluation method for the effect of precision measurement and tamping operations.

[0217] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0218] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0219] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0220] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0221] 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 descriptions are merely specific embodiments of the present invention and are 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.

Claims

1. A comprehensive evaluation method for the effect of precision measurement and tamping operations, characterized in that, include: Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping. A criterion layer is determined below the target layer. The criterion layer is represented by comprehensive evaluation items, where the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items. The comprehensive evaluation items include track quality status, wavelength improvement degree, track quality tracking, and vehicle response status. A criterion layer is determined below the criterion layer. The criterion layer is represented by evaluation indicators, where each comprehensive evaluation item corresponds to multiple evaluation indicators. The evaluation indicators corresponding to the track quality status include TQI improvement rate, TQI compliance rate, and unit TQI improvement rate. The unit TQI improvement rate is the ratio of the TQI improvement rate to the TQI before tamping. The evaluation indicators corresponding to the degree of wavelength improvement include the improvement rate of high and low wavelength energy and the improvement rate of track-direction wavelength energy; the improvement rate of high and low wavelength energy and the improvement rate of track-direction wavelength energy are obtained by analyzing the frequency domain spectrum of the front, back, left and right height and track direction before and after the tamping operation of the large machine using wavelet analysis theory; the evaluation indicators corresponding to track quality tracking include the TQI deterioration rate; the evaluation indicators corresponding to vehicle response status include the peak deviation exceeding the limit, the standard deviation of the lateral addition of the car body, and the standard deviation of the vertical addition of the car body. Determine the grading criteria for each evaluation indicator; Determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and determine the comprehensive evaluation relationship model of the precision measurement and compaction effect; After obtaining the precision measurement and tamping operation data, based on the grading standard of each evaluation indicator, the score of each evaluation indicator of the precision measurement and tamping operation data is obtained, and then input into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation. A cumulative distribution map of the unit TQI improvement rate for different speed levels is plotted, and based on the cumulative distribution map, the unit TQI improvement rate is classified according to the different speed levels. The formulas for calculating the energy improvement rate at high and low wavelengths and the energy improvement rate at orbital wavelengths are as follows: in, For high and low wavelength energy improvement rate or orbital wavelength energy improvement rate; It represents the difference in irregular energy within each wavelength segment before and after the tamping operation by the large machine; The values ​​of uneven energy in each wavelength segment before the tamping operation by the large machine; Weights corresponding to different wavelength segments; m Number of wavelength segments; n The number of track irregularities calculated for each operating mode; Based on dynamic track inspection data, frequency domain analysis method is used to analyze the frequency domain spectrum of elevation and track direction before and after tamping. The degree of improvement of different wavelength components in the frequency domain spectrum of elevation and track direction by different operation modes is compared, and a classification standard for the improvement rate of elevation wavelength energy and the improvement rate of track direction wavelength energy is formed. After obtaining precision measurement and tamping operation data under different measurement methods, different tamping modes, and different operating units, the evaluation results of each precision measurement and tamping operation are obtained. The evaluation results of various precision measurement and tamping operations are compared to obtain calculation results. Based on the calculation results, a recommended method for precision measurement and tamping operations is generated. The recommended method includes at least one of the following: recommended measurement method, recommended tamping mode, and recommended operating unit.

2. The method as described in claim 1, characterized in that, A criterion layer is determined below the target layer, and the criterion layer is represented by comprehensive evaluation terms, including: The determination of the track quality status indicates the direct effect of the precision measurement and tamping operation; Determining the degree of improvement using wavelength indicates the effect of precision measurement and tamping on improving the alignment. The adoption of track quality tracking indicates the effectiveness of track quality retention after precision measurement and tamping. The vehicle response status is determined to represent the degree of comfort after fine measurement and tamping.

3. The method as described in claim 2, characterized in that, A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including: The TQI improvement rate was determined to represent the effectiveness of large-scale tamping operations; The unit TQI improvement rate is determined to represent the effect of large-scale tamping operation in eliminating the influence of track quality before tamping; The TQI compliance rate is used to represent the quality of tamping operations performed by large machinery.

4. The method as described in claim 2, characterized in that, A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including: The high and low wavelength energy improvement rates were determined to be used to analyze the frequency domain spectrum of the large machine tamping operation before, after, to the left and right, and at different heights. The track-direction wavelength energy improvement rate was determined, and the frequency domain spectrum of the track in the left and right directions before and after the tamping operation of the large machine was analyzed.

5. The method as described in claim 2, characterized in that, A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including: The TQI degradation rate is determined to represent the ability to maintain the orbital state.

6. The method as described in claim 2, characterized in that, A criterion layer is defined below the criterion layer, and the criterion layer is represented by evaluation indicators, including: The peak deviation exceeding the limit, the standard deviation of the car body lateral and the standard deviation of the car body vertical are used to represent the improvement effect of precision measurement and tamping on train running comfort.

7. The method as described in claim 1, characterized in that, Determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of each evaluation indicator in the indicator layer, and determine the comprehensive evaluation relationship model of the precision measurement and compaction effect, including: The weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer are determined by the analytic hierarchy process, and a hierarchical single ranking and consistency test are performed. After the consistency test is successful, the comprehensive evaluation relationship model of the precision measurement and tamping effect is determined.

8. A comprehensive evaluation device for the effect of precision measurement and tamping operations, characterized in that, include: The module for constructing a comprehensive evaluation system for the effects of precision measurement and compaction is used for: Determine the target layer of the comprehensive evaluation system for the effect of precision measurement and tamping, wherein the target layer is represented by the comprehensive evaluation domain for the effect of precision measurement and tamping. A criterion layer is determined below the target layer. The criterion layer is represented by comprehensive evaluation items, where the comprehensive evaluation domain of the fine measurement and tamping effect corresponds to multiple comprehensive evaluation items. The comprehensive evaluation items include track quality status, wavelength improvement degree, track quality tracking, and vehicle response status. A criterion layer is determined below the criterion layer. The criterion layer is represented by evaluation indicators, where each comprehensive evaluation item corresponds to multiple evaluation indicators. The evaluation indicators corresponding to the track quality status include TQI improvement rate, TQI compliance rate, and unit TQI improvement rate. The unit TQI improvement rate is the ratio of the TQI improvement rate to the TQI before tamping. The evaluation indicators corresponding to the degree of wavelength improvement include the improvement rate of high and low wavelength energy and the improvement rate of track-direction wavelength energy; the improvement rate of high and low wavelength energy and the improvement rate of track-direction wavelength energy are obtained by analyzing the frequency domain spectrum of the front, back, left and right height and track direction before and after the tamping operation of the large machine using wavelet analysis theory; the evaluation indicators corresponding to track quality tracking include the TQI deterioration rate; the evaluation indicators corresponding to vehicle response status include the peak deviation exceeding the limit, the standard deviation of the lateral addition of the car body, and the standard deviation of the vertical addition of the car body. The grading standard determination module is used to determine the grading standard for each evaluation indicator; The module for determining the comprehensive evaluation relationship model of the fine measurement and tamping effect is used to determine the weight values ​​of each comprehensive evaluation item in the criterion layer and the weight values ​​of the evaluation indicators in each indicator layer, and to determine the comprehensive evaluation relationship model of the fine measurement and tamping effect. The evaluation and analysis module is used to obtain the score of each evaluation indicator of the precision measurement and tamping operation data after obtaining the precision measurement and tamping operation data, based on the level classification standard of each evaluation indicator, and input it into the comprehensive evaluation relationship model of precision measurement and tamping effect to obtain the evaluation result of the precision measurement and tamping operation. A cumulative distribution map of the unit TQI improvement rate for different speed levels is plotted, and based on the cumulative distribution map, the unit TQI improvement rate is classified according to the different speed levels. The formulas for calculating the energy improvement rate at high and low wavelengths and the energy improvement rate at orbital wavelengths are as follows: in, For high and low wavelength energy improvement rate or orbital wavelength energy improvement rate; It represents the difference in irregular energy within each wavelength segment before and after the tamping operation by the large machine; The values ​​of uneven energy in each wavelength segment before the tamping operation by the large machine; Weights corresponding to different wavelength segments; m Number of wavelength segments; n The number of track irregularities calculated for each operating mode; Based on dynamic track inspection data, frequency domain analysis method is used to analyze the frequency domain spectrum of elevation and track direction before and after tamping. The degree of improvement of different wavelength components in the frequency domain spectrum of elevation and track direction by different operation modes is compared, and a classification standard for the improvement rate of elevation wavelength energy and the improvement rate of track direction wavelength energy is formed. After obtaining precision measurement and tamping operation data under different measurement methods, different tamping modes, and different operating units, the evaluation results of each precision measurement and tamping operation are obtained. The evaluation results of various precision measurement and tamping operations are compared to obtain calculation results. Based on the calculation results, a recommended method for precision measurement and tamping operations is generated. The recommended method includes at least one of the following: recommended measurement method, recommended tamping mode, and recommended operating unit.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 1 to 7.

11. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method of any one of claims 1 to 7.

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