Accurate measurement and fine tamping operation scheme optimization method and device based on preset track lifting quantity

Abstract

The invention discloses a method and device for optimizing an accurate measurement and fine tamping operation scheme based on a preset track lifting quantity, and the method comprises the steps: obtaining historical track geometric irregularity detection data and track lifting quantity information of historical operation in a ballast track settlement section; according to historical track geometric irregularity detection data, the track quality degradation rate of different positions in the settlement section is calculated; according to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping scheme before tamping, the correction coefficient of the track lifting amount of the tamping scheme is calculated; and according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, the preset track lifting amount of the tamping scheme is determined, and tamping operation is conducted according to the preset track lifting amount. According to the method, the quality guarantee period of the track can be effectively prolonged, and cost reduction and efficiency improvement of track tamping maintenance operation are achieved.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a method and device for optimizing a precise measurement and precise tamping operation plan based on a preset track lifting amount. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] At present, with the continuous promotion and application of railway precision measurement and precision tamping technology, the geometric unevenness of the track has been effectively improved through ballasted track tamping. Since the track bed has a certain structural memory, after the precision measurement and precision tamping operation in the old settlement section, every time a train passes, an attempt is made to restore the track to its original position. In the existing tamping scheme, once a large number of trains pass through the line in a short period of time, the track unevenness will still develop along the settlement trajectory before tamping, which will cause the track unevenness to quickly deteriorate to its pre-tamping state, and the track quality deterioration rate will accelerate, resulting in a shorter shelf life of track quality. The reduced maintenance cycle has greatly increased the maintenance cost of railway engineering machinery. Summary of the invention

[0004] The embodiment of the present invention provides a method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount, which is used to optimize the tamping plan, effectively extend the shelf life of track quality, and achieve cost reduction and efficiency improvement of track tamping maintenance operations. The method includes:

[0005] In the ballasted track settlement section, historical track geometry irregularity detection data and track lifting quantity information of historical operations are obtained; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping;

[0006] Based on historical track geometry irregularity detection data, the track quality degradation rate at different locations in the settlement section is calculated;

[0007] According to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping, the correction coefficient of the track lifting amount of the tamping plan is calculated;

[0008] According to the correction coefficient of the track lifting amount of the tamping plan and the track quality degradation rate, the preset track lifting amount of the tamping plan is determined, and the tamping operation is carried out according to the preset track lifting amount.

[0009] The embodiment of the present invention further provides a device for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount, which is used to optimize the tamping plan, effectively extend the shelf life of track quality, and achieve cost reduction and efficiency improvement of track tamping maintenance operations. The device includes:

[0010] A historical track information acquisition module is used to acquire historical track geometric irregularity detection data and track lifting quantity information of historical operations in a ballasted track settlement section; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping;

[0011] Track quality degradation rate calculation module, used to calculate the track quality degradation rate at different positions in the settlement section based on historical track geometry irregularity detection data;

[0012] A correction coefficient calculation module for the track lifting amount of the tamping scheme, used to calculate the correction coefficient of the track lifting amount of the tamping scheme according to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping scheme before tamping;

[0013] The preset track lifting amount determination module is used to determine the preset track lifting amount of the tamping scheme according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, and perform tamping operations according to the preset track lifting amount.

[0014] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the above-mentioned method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount is implemented.

[0015] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount.

[0016] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned method for optimizing the precise measurement and precise tamping operation plan based on a preset starting amount.

[0017] In an embodiment of the present invention, historical track geometric irregularity detection data and track lifting amount information of historical operations are obtained in the ballasted track settlement section; the track lifting amount information of historical operations includes the historical actual track lifting amount after tamping and the historical tamping plan track lifting amount before tamping; the track quality degradation rate at different positions in the settlement section is calculated based on the historical track geometric irregularity detection data; the correction coefficient of the track lifting amount of the tamping plan is calculated based on the historical actual track lifting amount after tamping and the historical tamping plan track lifting amount before tamping; the preset track lifting amount of the tamping plan is determined based on the correction coefficient of the tamping plan track lifting amount and the track quality degradation rate, and the tamping operation is performed according to the preset track lifting amount. In the above process, the embodiment of the present invention calculates the track height irregularity degradation rate at different positions in the settlement section based on the historical track height irregularity detection data. Based on the historical track geometry irregularity detection data and the track lifting quantity information of historical operations, the track quality degradation rate and correction coefficient are calculated, and the preset track lifting quantity is further determined. The tamping plan is optimized by the preset track lifting quantity, thereby effectively extending the shelf life of track quality and achieving cost reduction and efficiency improvement of track tamping maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a flow chart of a method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount in an embodiment of the present invention;

[0020] Figure 2 It is a flow chart of calculating the correction coefficient of the track start amount of the tamping scheme in an embodiment of the present invention;

[0021] Figure 3 A flow chart of adjusting a preset track lift amount in an embodiment of the present invention;

[0022] Figure 4 It is a curve diagram of the left high and low development rule of K912+500 to K912+600 in the embodiment of the present invention;

[0023] Figure 5 It is a left high-low development trend curve diagram of K912+525 to K912+550 in the embodiment of the present invention;

[0024] Figure 6 This is a diagram showing the left high and low tracking analysis results of K912+500 to K912+600 in an embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of a device for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0027] First, the preparation work for generating the precise measurement and precise tamping scheme is described. In a specific embodiment, generating the precise measurement and precise tamping scheme requires the following steps:

[0028] Step 1: Accurate measurement of the track

[0029] The precise measurement of ballasted track uses measuring equipment such as track inspection instruments, GNSS receivers, and total stations, combined with a precise track control network, to quickly, accurately, and continuously obtain the internal and external geometric parameters of the track to obtain the actual line shape and position of the line. After the precise measurement of the track is completed, the horizontal and vertical section alignment is reconstructed based on the line equipment constraints, different wavelength unevenness constraints, and minimum adjustment constraints, providing a basis for the formulation of the tamping plan.

[0030] Step 2: Linear Reconstruction Design

[0031] 1) Plane linear reconstruction design

[0032] According to the measured plane coordinate data of the centerline of the line track, the curvature along the line mileage is calculated using the three-point curvature method, and the line is divided into straight line segments and curved segments according to the calculation results. According to the linear segmentation results, the reconstruction design of the straight line is completed by the orthogonal square fitting method, and it is determined whether the plane deviation of the straight line segment meets the constraint conditions. If not, the azimuth of the straight line should be adjusted and the reconstruction design should be re-performed.

[0033] Combined with the requirements of the specification and the actual situation of the line, the search range of the circular curve section design parameters is determined, including the curve radius and the length of the front and rear transition curves. Within the design parameter search range, different combinations of curve radius and front and rear transition curve lengths are used to reconstruct the curve section, and the data such as the total length of the curve, the mileage and coordinates of the four major pile points, and the plane deviation of the curve section are calculated, and all plane reconstruction design results that meet the constraints are saved. A set of design parameters with the smallest sum of squares of the overall plane deviation is selected as the optimal reconstruction design result.

[0034] 2) Longitudinal section line reconstruction design

[0035] According to the designed line mileage and measured track elevation data, a 50m chord is used to calculate the slope difference curve of adjacent chords, and the initial position mileage of the slope change point is identified to complete the division of different slope sections; the orthogonal least squares fitting method is used to complete the reconstruction design of the straight slope section and calculate the initial elevation of the slope change point.

[0036] Combined with the requirements of the specification, the actual situation of the on-site line and the initial calculation results of the mileage / elevation of the slope change point, the search range of the longitudinal section design parameters is determined, including the mileage of the slope change point, the elevation, and the vertical curve radius. Within the design parameter search range, different combinations of the mileage of the slope change point, the elevation, and the vertical curve radius are used to reconstruct the longitudinal section, calculate the mileage of the starting and ending points of the vertical curve, the elevation deviation and other information, and save all the reconstruction design results that meet the constraints. From them, the set of design parameters with the smallest sum of squares of the overall elevation deviation is selected as the optimal reconstruction design result.

[0037] Step 3: Generation of tamping plan for precise measurement and tamping

[0038] Combining the unevenness detection model and the basic unit grouping adjustment strategy, and taking into account the operating characteristics of large-scale tamping vehicles, the medium and long wave unevenness control theory is adopted to finally generate a tamping plan with precise measurement and tamping.

[0039] After the tamping plan is generated, the tamping plan is optimized according to the embodiment of the present invention. Figure 1 Flow chart of a method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount in an embodiment of the present invention, the method comprising:

[0040] Step 101, in a ballasted track settlement section, obtaining historical track geometry irregularity detection data and track lifting quantity information of historical operations; the track lifting quantity information of historical operations includes historical actual track lifting quantity after tamping and historical tamping scheme track lifting quantity before tamping;

[0041] Step 102, calculating the track quality degradation rate at different positions in the settlement section according to historical track geometric irregularity detection data;

[0042] Step 103, calculating a correction coefficient for the track lifting amount of the tamping scheme according to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping scheme before tamping;

[0043] Step 104, determining a preset track lifting amount of the tamping scheme according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, and performing tamping operations according to the preset track lifting amount.

[0044] Each step is described in detail below.

[0045] In step 101, in a ballasted track settlement section, historical track geometry irregularity detection data and track lifting quantity information of historical operations are obtained; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping; in step 102, based on the historical track geometry irregularity detection data, the track quality degradation rate at different positions in the settlement section is calculated.

[0046] In one embodiment, the track quality degradation rates at different positions in the settlement section are calculated based on historical track geometric irregularity detection data, including:

[0047] The track quality degradation rate is calculated according to the following formula:

[0048]

[0049] Among them, k p is the degradation rate at point p in the sedimentation section; x i is the track geometry irregularity detection data of the ith detection; x i+1 is the track geometry irregularity detection data of the i+1th detection; t i is the interval from the i-th detection to the i+1-th detection; t i+1 is the interval from the i+1th detection to the i+2th detection; N is the number of valid detections.

[0050] In step 103, a correction coefficient of the track lift amount of the tamping plan is calculated based on the historical actual track lift amount after tamping and the historical track lift amount of the tamping plan before tamping.

[0051] In a specific embodiment, the actual track lifting amount after the large-scale tamping operation is closely related to the planned track lifting amount, the tamping vehicle model, the tamping mode, and the line conditions. Whether the large-scale tamping machinery in the field operation uses its own leveling system or the precision tamping plan data for tamping, the actual track lifting amount is often less than the planned track lifting amount, and there is a certain deviation between the track elevation after the operation and the ideal elevation, which affects the improvement of the track line shape and track unevenness. In order to further improve the effect of precision tamping operations, a tamping plan correction coefficient is proposed for different track lifting amounts.

[0052] Figure 2 FIG. 4 is a flow chart of calculating the correction coefficient of the track start amount of the tamping scheme in an embodiment of the present invention. Figure 2 As shown, in one embodiment, according to the historical actual track lifting amount after tamping and the historical tamping scheme track lifting amount before tamping, the correction coefficient of the tamping scheme track lifting amount is calculated, including:

[0053] Step 201, determining a mathematical relationship between the historical actual track lifting amount after tamping and the historical tamping scheme track lifting amount before tamping based on the historical actual track lifting amount after tamping and the historical tamping scheme track lifting amount before tamping;

[0054] Step 202, calculating a correction coefficient for the track start amount of the tamping scheme according to the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme.

[0055] In one embodiment, the correction coefficient of the track start amount of the tamping scheme is calculated according to the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme, including:

[0056] The correction factor of the tamping scheme start quantity is calculated according to the following formula:

[0057] G=aT+b

[0058]

[0059] Where G represents the actual track lift after tamping; T represents the track lift of the tamping scheme before tamping; a represents the improvement coefficient; b represents the constant term; γ0 represents the correction coefficient of the track lift of the tamping scheme; l j Represents the average value of the preset elevation adjustment in the jth interval.

[0060] In step 104, a preset track lifting amount of the tamping scheme is determined according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, and the tamping operation is performed according to the preset track lifting amount.

[0061] In one embodiment, determining a preset track lift amount of the tamping scheme according to a correction coefficient of the track lift amount of the tamping scheme and a track quality degradation rate includes:

[0062] The preset track start amount for the tamping scheme is calculated according to the following formula:

[0063] OLT=γ0×k p ×T′

[0064] Among them, OLT is the preset track lifting amount; γ0 is the correction coefficient of the track lifting amount of the tamping scheme; T′ is the duration of the track quality warranty period; k p is the degradation rate at point p in the sedimentation section.

[0065] In a specific embodiment, in order to further extend the shelf life of track quality and increase the time for track unevenness to develop to the pre-operation state, a certain preset track raising amount OLT is added on the basis of the track raising amount of the precise measurement and precise tamping operation plan generated based on the precise measurement data of the track. Since large-scale machine operations cannot 100% execute the track raising amount of the precise measurement and precise tamping operation plan, considering the realization rate of the operation plan, the preset track raising amount is multiplied by a certain correction coefficient γ0 and then rounded to obtain the recommended preset track raising amount. This method is used to optimize the precise measurement and precise tamping operation plan, which can extend the shelf life of the tamping operation and provide a scientific basis for reducing frequent tamping operations.

[0066] Figure 3 FIG. 1 is a flow chart of adjusting the preset track start amount in an embodiment of the present invention. Figure 3 As shown, in one embodiment, after determining the preset track start amount of the tamping scheme, it also includes:

[0067] Step 301, comparing a preset track lift amount with a preset maximum track lift amount;

[0068] Step 302, if the comparison result is that the preset track raising amount exceeds the preset maximum track raising amount, shortening the track quality shelf life;

[0069] Step 303, adjusting the preset track raising amount according to the shortened track quality shelf life, until the adjusted preset track raising amount does not exceed the preset maximum track raising amount;

[0070] Step 304, performing tamping operation according to the adjusted preset track lifting amount.

[0071] In a specific embodiment, the adjusted preset track lift amount l 调整后的预设起道量 , L between two adjacent points i , L i+1 The slope rate should not exceed 1.2‰. If the slope rate exceeds 1.2‰, the track quality warranty period T needs to be reduced until the slope rate requirement is met. At the same time, the track smoothness should be such that the unevenness of the 60m chord should not be greater than 7mm.

[0072]

[0073] In the formula, l i+1,调整后的预设起道量 , l i,调整后的预设起道量 is the track start amount at the i-th and i+1-th positions of the tamping scheme; L i , L i+1 is the mileage of the i-th and i+1-th places; E i,60 It is the 60m chord irregularity value at the i-th location of your cable.

[0074] To take a specific example, K912+500~K912+600 of a certain railway is an old settlement section. According to the feedback from on-site maintenance personnel, the settlement of this section is about 3~5mm. Based on the preset track raising amount, the precise measurement and tamping operation plan for this section is optimized, and its operation effect is verified.

[0075] (1) Analysis of the uneven development patterns of historical tracks

[0076] According to the analysis of the track geometry detection data of the historical A period, B period, C period, D period, and E period, it is found that the track at K912+525~K912+550 has an obvious trend of unevenness and deterioration, such as Figure 4 It is a curve diagram of the left high and low development rule of K912+500 to K912+600 in the embodiment of the present invention; Figure 5 This is a left high-low development trend curve diagram of K912+525 to K912+550 in the embodiment of the present invention, and the degradation rate of the left high-low over time is calculated, as shown in Table 1.

[0077] Table 1 K912+525~K912+550 Left High Low Deterioration Rate

[0078]

[0079] (2) Calculation of preset track start amount

[0080] Through the analysis of the detection data, the K912+525~K912+550 section was optimized. According to the degradation rate of the left high and low, the degradation degree of t=6 months was calculated as the preset track-lifting amount. Since the large machine operation cannot 100% execute the track-lifting amount of the tamping operation plan, considering the tamping plan realization rate, the preset track-lifting amount was multiplied by a certain coefficient and rounded to obtain the recommended preset track-lifting amount plan, as shown in Table 2. Through field test analysis, the large machine correction coefficient was selected as 1.25, and the optimized precision measurement and precision tamping operation plan was used to carry out the large machine tamping operation. The measurement method used an inertial navigation trolley + GNSS, the tamping mode was single tamping + stable, and the tamping vehicle was DWL-48.

[0081] Table 2 K912+525~K912+550 preset track start

[0082]

[0083] (3) Verification of the preset track-starting quantity optimization and precise measurement and precise tamping operation plan

[0084] In order to verify the effectiveness of the scheme of optimizing the precise measurement and tamping operation based on the preset track lifting amount, the track height detection data of the test section after precise measurement and tamping for one and a half years were tracked and analyzed. Figure 6 As shown, Figure 6 This is the left high and low tracking analysis result diagram of K912+500~K912+600 in the embodiment of the present invention. The maximum high and low deviation of the detection data before precise measurement and precise tamping is -6mm, and the maximum high and low deviation of the first detection data after precise measurement and precise tamping is +2, which changes from the original negative value to a positive value, indicating that the preset starting amount has a certain effect.

[0085] As time goes by, the high and low deviations in the test data are around 0mm, and then the maximum high and low deviations in the test data are -1.5mm, gradually showing a trend of rapid deterioration. According to the on-site maintenance personnel, based on past experience, the maintenance operation cycle of this operation section is about 1 year. After optimizing the precise measurement and precise tamping operation plan by presetting the track lifting amount, the operation section began to show a rapid deterioration trend after 1 and a half years, indicating that the presetting track lifting amount has a significant advantage in optimizing the precise measurement and precise tamping operation plan and extending the shelf life of the precise measurement and precise tamping operation.

[0086] The embodiment of the present invention also provides a device for optimizing the precise measurement and precise tamping operation plan based on a preset track start amount, as described in the following embodiment. Since the principle of solving the problem by the device is similar to the method for optimizing the precise measurement and precise tamping operation plan based on a preset track start amount, the implementation of the device can refer to the implementation of the method for optimizing the precise measurement and precise tamping operation plan based on a preset track start amount, and the repeated parts will not be repeated.

[0087] Figure 7 Schematic diagram of a device for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount in an embodiment of the present invention, the device comprising:

[0088] The historical track information acquisition module 701 is used to acquire historical track geometric irregularity detection data and track lifting quantity information of historical operations in the ballasted track settlement section; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping;

[0089] The track quality degradation rate calculation module 702 is used to calculate the track quality degradation rate at different positions in the settlement section according to the historical track geometric irregularity detection data;

[0090] The correction coefficient calculation module 703 of the track raising amount of the tamping scheme is used to calculate the correction coefficient of the track raising amount of the tamping scheme according to the historical actual track raising amount after tamping and the historical track raising amount of the tamping scheme before tamping;

[0091] The preset track lifting amount determination module 704 is used to determine the preset track lifting amount of the tamping scheme according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, and perform tamping operations according to the preset track lifting amount.

[0092] In one embodiment, the track quality degradation rate calculation module 702 is specifically configured to:

[0093] The track quality degradation rate is calculated according to the following formula:

[0094]

[0095] Among them, k p is the degradation rate at point p in the sedimentation section; x i is the track geometry irregularity detection data of the ith detection; x i+1 is the track geometry irregularity detection data of the i+1th detection; t i is the interval from the i-th detection to the i+1-th detection; t i+1 is the interval from the i+1th detection to the i+2th detection; N is the number of valid detections.

[0096] In one embodiment, the correction coefficient calculation module 703 of the tamping scheme track start amount is specifically used for:

[0097] According to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping, the mathematical relationship between the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping is determined;

[0098] The correction coefficient of the track start amount of the tamping scheme is calculated based on the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme.

[0099] In one embodiment, the correction coefficient calculation module 703 of the tamping scheme track start amount is specifically used for:

[0100] The correction factor of the tamping scheme start quantity is calculated according to the following formula:

[0101] G=aT+b

[0102]

[0103] Where G represents the actual track lift after tamping; T represents the track lift of the tamping scheme before tamping; a represents the improvement coefficient; b represents the constant term; γ0 represents the correction coefficient of the track lift of the tamping scheme; l j Represents the average value of the preset elevation adjustment in the jth interval.

[0104] In one embodiment, the track start amount determination module 704 is preset to be specifically used for:

[0105] The preset track start amount for the tamping scheme is calculated according to the following formula:

[0106] OLT=γ0×k p ×T′

[0107] Among them, OLT is the preset track lifting amount; γ0 is the correction coefficient of the track lifting amount of the tamping scheme; T′ is the duration of the track quality warranty period; k p is the degradation rate at point p in the sedimentation section.

[0108] In one embodiment, a preset track start amount adjustment module is also included, which is specifically used to:

[0109] Compare the preset track lifting amount with the preset maximum track lifting amount;

[0110] If the comparison result shows that the preset track lifting amount exceeds the preset maximum track lifting amount, the track quality shelf life will be shortened;

[0111] The preset track lifting amount is adjusted according to the shortened track quality shelf life until the adjusted preset track lifting amount does not exceed the preset maximum track lifting amount;

[0112] Carry out tamping operations according to the adjusted preset track lifting amount.

[0113] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the above-mentioned method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount is implemented.

[0114] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-mentioned method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount.

[0115] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned method for optimizing the precise measurement and precise tamping operation plan based on a preset starting amount.

[0116] In an embodiment of the present invention, historical track geometric irregularity detection data and track lifting amount information of historical operations are obtained in the ballasted track settlement section; the track lifting amount information of historical operations includes the historical actual track lifting amount after tamping and the historical tamping plan track lifting amount before tamping; the track quality degradation rate at different positions in the settlement section is calculated based on the historical track geometric irregularity detection data; the correction coefficient of the track lifting amount of the tamping plan is calculated based on the historical actual track lifting amount after tamping and the historical tamping plan track lifting amount before tamping; the preset track lifting amount of the tamping plan is determined based on the correction coefficient of the tamping plan track lifting amount and the track quality degradation rate, and the tamping operation is performed according to the preset track lifting amount. In the above process, the embodiment of the present invention calculates the track height irregularity degradation rate at different positions in the settlement section based on the historical track height irregularity detection data. Based on the historical track geometry irregularity detection data and the track lifting quantity information of historical operations, the track quality degradation rate and correction coefficient are calculated, and the preset track lifting quantity is further determined. The tamping plan is optimized by the preset track lifting quantity, thereby effectively extending the shelf life of track quality and achieving cost reduction and efficiency improvement of track tamping maintenance operations.

[0117] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented 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.

[0118] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0121] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. 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 in the scope of protection of the present invention.

Claims

1. A method for optimizing a precise measurement and precise tamping operation plan based on a preset track start amount, characterized in that: include: In the ballasted track settlement section, historical track geometry irregularity detection data and track lifting quantity information of historical operations are obtained; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping; Based on historical track geometry irregularity detection data, the track quality degradation rate at different locations in the settlement section is calculated; According to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping, the correction coefficient of the track lifting amount of the tamping plan is calculated; According to the correction coefficient of the track lifting amount of the tamping plan and the track quality degradation rate, the preset track lifting amount of the tamping plan is determined, and the tamping operation is carried out according to the preset track lifting amount.

2. The method according to claim 1, characterized in that Based on the historical track geometry irregularity detection data, the track quality degradation rate at different locations in the settlement section is calculated, including: The track quality degradation rate is calculated according to the following formula: Among them, k p is the degradation rate at point p in the sedimentation section; x i is the track geometry irregularity detection data of the ith detection; x i+1 is the track geometry irregularity detection data of the i+1th detection; t i is the interval from the i-th detection to the i+1-th detection; t i+1 is the interval from the i+1th detection to the i+2th detection; N is the number of valid detections.

3. The method according to claim 1, characterized in that According to the historical actual track lifting amount after tamping and the historical tamping scheme track lifting amount before tamping, the correction coefficient of the tamping scheme track lifting amount is calculated, including: According to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping, the mathematical relationship between the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping is determined; The correction coefficient of the track start amount of the tamping scheme is calculated based on the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme.

4. The method according to claim 3, characterized in that According to the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme, the correction coefficient of the track start amount of the tamping scheme is calculated, including: The correction factor of the tamping scheme start quantity is calculated according to the following formula: G=aT+b Where G represents the actual track lift after tamping; T represents the track lift of the tamping scheme before tamping; a represents the improvement coefficient; b represents the constant term; γ0 represents the correction coefficient of the track lift of the tamping scheme; l j Represents the average value of the preset elevation adjustment amount in the jth interval.

5. The method according to claim 1, characterized in that According to the correction coefficient of the track start amount of the tamping scheme and the track quality degradation rate, the preset track start amount of the tamping scheme is determined, including: The preset track start amount for the tamping scheme is calculated according to the following formula: OLT=γ0×k p ×T′ Among them, OLT is the preset track lifting amount; γ0 is the correction coefficient of the track lifting amount of the tamping scheme; T′ is the duration of the track quality warranty period; k p is the degradation rate at point p in the sedimentation section.

6. The method according to claim 5, characterized in that After determining the preset track start amount for the tamping plan, it also includes: Compare the preset track lifting amount with the preset maximum track lifting amount; If the comparison result shows that the preset track lifting amount exceeds the preset maximum track lifting amount, the track quality shelf life will be shortened; The preset track lifting amount is adjusted according to the shortened track quality shelf life until the adjusted preset track lifting amount does not exceed the preset maximum track lifting amount; Carry out tamping operations according to the adjusted preset track lifting amount.

7. A device for optimizing precise measurement and precise tamping operation scheme based on a preset track start amount, characterized in that: include: A historical track information acquisition module is used to acquire historical track geometric irregularity detection data and track lifting quantity information of historical operations in a ballasted track settlement section; the track lifting quantity information of historical operations includes the historical actual track lifting quantity after tamping and the historical tamping plan track lifting quantity before tamping; Track quality degradation rate calculation module, used to calculate the track quality degradation rate at different positions in the settlement section based on historical track geometry irregularity detection data; A correction coefficient calculation module for the track lifting amount of the tamping scheme, used to calculate the correction coefficient for the track lifting amount of the tamping scheme according to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping scheme before tamping; The preset track lifting amount determination module is used to determine the preset track lifting amount of the tamping scheme according to the correction coefficient of the track lifting amount of the tamping scheme and the track quality degradation rate, and perform tamping operations according to the preset track lifting amount.

8. The device according to claim 7, characterized in that Track quality degradation rate calculation module, specifically used for: The track quality degradation rate is calculated according to the following formula: Among them, k p is the degradation rate at point p in the sedimentation section; x i is the track geometry irregularity detection data of the ith detection; x i+1 is the track geometry irregularity detection data of the i+1th detection; t i is the interval from the i-th detection to the i+1-th detection; t i+1 is the interval from the i+1th detection to the i+2th detection; N is the number of valid detections.

9. The device according to claim 7, characterized in that The correction coefficient calculation module of the tamping scheme start quantity is specifically used for: According to the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping, the mathematical relationship between the historical actual track lifting amount after tamping and the historical track lifting amount of the tamping plan before tamping is determined; The correction coefficient of the track start amount of the tamping scheme is calculated based on the mathematical relationship and the average value of the elevation adjustment amount preset in the tamping scheme.

10. The device according to claim 9, characterized in that The correction coefficient calculation module of the tamping scheme start quantity is specifically used for: The correction factor of the tamping scheme start quantity is calculated according to the following formula: G=aT+b Where G represents the actual track lift after tamping; T represents the track lift of the tamping scheme before tamping; a represents the improvement coefficient; b represents the constant term; γ0 represents the correction coefficient of the track lift of the tamping scheme; l j Represents the average value of the preset elevation adjustment amount in the jth interval.

11. The device according to claim 7, characterized in that The preset track start amount determination module is specifically used for: The preset track start amount for the tamping scheme is calculated according to the following formula: OLT=γ0×k p ×T′ Among them, OLT is the preset track lifting amount; γ0 is the correction coefficient of the track lifting amount of the tamping scheme; T′ is the duration of the track quality warranty period; k p is the degradation rate at point p in the sedimentation section.

12. The device according to claim 11, characterized in that It also includes a preset track lift adjustment module, which is specifically used for: Compare the preset track lifting amount with the preset maximum track lifting amount; If the comparison result shows that the preset track lifting amount exceeds the preset maximum track lifting amount, the track quality shelf life will be shortened; The preset track lifting amount is adjusted according to the shortened track quality shelf life until the adjusted preset track lifting amount does not exceed the preset maximum track lifting amount; Carry out tamping operations according to the adjusted preset track lifting amount.

13. 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, the method according to any one of claims 1 to 6 is implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

15. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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