Railway yard roadbed model construction method and device based on characteristic lines

Abstract

The invention discloses a railway yard roadbed model construction method and device based on feature lines, and relates to the technical field of railway engineering.The method comprises the steps that roadbed surface feature lines are arranged based on railway yard design information, feature line arrangement information is obtained, and additional attribute information of the roadbed surface feature lines is set; determining a target roadbed surface feature line at the target mileage section based on the feature line arrangement information; based on the additional attribute information of the target roadbed surface feature line and the track line information, determining space coordinates of the target roadbed surface feature line; constructing a roadbed cross section based on the space coordinates of the feature points and the transverse roadbed slope section data; and constructing a railway yard roadbed model based on the roadbed cross section. Through the mode, the feature lines are used for describing the roadbed surface, the additional attributes are set, requirements are reflected more accurately, the accuracy of the model is guaranteed, roadbed cross section design can be completed automatically, section slice materials are provided for building the station yard roadbed model, and the model building efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of railway engineering technology, and in particular to a method and device for constructing a railway station subgrade model based on characteristic lines. Background Art

[0002] At present, after completing the design of the control characteristic line, the subgrade surface model needs to be obtained through continuous adjustment and fitting calculation, which makes it difficult to transform the real design intention into the final subgrade model, resulting in an inaccurate model. In addition, the model subgrade engineering technical parameter information is insufficient and cannot meet the requirements of automatic design and drawing of railway station subgrade cross sections, affecting efficiency.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of this application is to provide a method and device for constructing a railway station roadbed model based on characteristic lines, aiming to solve the technical problems of insufficient accuracy and poor construction efficiency of railway station roadbed models in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides a method for constructing a railway station subgrade model based on characteristic lines, the method comprising:

[0006] Arrange the roadbed surface feature lines based on the railway station design information, obtain the feature line arrangement information, and set the additional attribute information of the roadbed surface feature lines;

[0007] Based on the characteristic line arrangement information, determining a target roadbed surface characteristic line at a target mileage section;

[0008] Determine the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information;

[0009] Constructing a roadbed cross section based on the spatial coordinates of the target roadbed surface characteristic line and the slope attributes;

[0010] Based on the roadbed cross section, a railway station roadbed model is constructed.

[0011] In one embodiment, the types of the roadbed surface feature lines include at least ridge lines, shoulders, platforms, and drainage ditches. The step of determining the spatial coordinates of the target roadbed surface feature lines based on the additional attribute information and track line information of the target roadbed surface feature lines includes:

[0012] Determining the plane coordinates of the target roadbed surface feature lines according to the feature line arrangement information;

[0013] Determine the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information, wherein the additional attribute information at least includes the associated track, track height difference, transverse slope, longitudinal elevation, connection relationship between feature lines, roadbed side slope, roadbed cross slope, roadbed layer filling information, drainage ditch type and shape, and the target roadbed surface feature line at least includes the ballast top ditch feature line, platform ditch feature line, rail top control feature line, designated feature line and other feature lines;

[0014] The spatial coordinates of the target roadbed surface feature line are obtained according to the plane coordinates and the elevation coordinates of the target roadbed surface feature line.

[0015] In one embodiment, the rail top control characteristic line is a ballast top groove characteristic line, and the step of determining the elevation coordinates of the target roadbed surface characteristic line according to the additional attribute information of the target roadbed surface characteristic line and the track line information comprises:

[0016] According to the track line information, determining the number of adjacent tracks of the ballast top ditch characteristic line;

[0017] When the number of adjacent tracks meets a first number threshold, determining, according to the track line information, a difference between the rail top elevation and the height difference from the groove top to the rail top, taking the difference between the rail top elevation and the height difference from the groove top to the rail top as the elevation of the ballast top groove characteristic line, and determining the elevation coordinates of the ballast top groove characteristic line according to the elevation of the ballast top groove characteristic line;

[0018] When the number of adjacent tracks meets the second quantity threshold, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is determined according to the track line information, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is used as the elevation of the ballast top groove characteristic line, and the elevation coordinates of the ballast top groove characteristic line are determined according to the elevation of the ballast top groove characteristic line.

[0019] In one embodiment, the rail top control characteristic line is a platform groove characteristic line, and the step of determining the elevation coordinates of the target roadbed surface characteristic line according to the additional attribute information of the target roadbed surface characteristic line and the track line information comprises:

[0020] When the platform groove characteristic line is located on the left side, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is determined according to the track line information, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is used as the elevation of the platform groove characteristic line, and the elevation coordinates of the platform groove characteristic line are determined according to the elevation of the platform groove characteristic line;

[0021] When the platform trench characteristic line is located on the right side, the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is determined according to the track line information, and the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is used as the elevation of the platform trench characteristic line, and the elevation coordinates of the platform trench characteristic line are determined according to the elevation of the platform trench characteristic line.

[0022] In one embodiment, the step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises:

[0023] Determine the rail top elevation and the height of the building above the track based on the track line information;

[0024] Determine the elevation of the roadbed surface at the track centerline according to the rail top elevation, the track upper building height and the roadbed cross slope;

[0025] Obtaining the first correspondence between the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the rail top control characteristic line elevation;

[0026] The elevation of the rail top control characteristic line is determined according to the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the first corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

[0027] In one embodiment, the step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises:

[0028] Determine the rail top elevation according to the track line information;

[0029] Acquire a second corresponding relationship between the rail top elevation, the preset rail top elevation difference and the elevation of the rail top control characteristic line;

[0030] The elevation of the rail top control characteristic line is determined according to the rail top elevation, the preset rail top elevation difference and the second corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

[0031] In one embodiment, the step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises:

[0032] The preset elevation is used as the elevation of the designated characteristic line, and the elevation coordinates of the designated characteristic line are determined according to the elevation of the designated characteristic line.

[0033] In one embodiment, the step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises:

[0034] Obtain the third correspondence between the known slope end elevation, slope length, roadbed cross slope and elevations of other characteristic lines;

[0035] The elevation of the other characteristic line is determined according to the known slope end elevation, slope length, roadbed transverse slope and the third corresponding relationship, and the elevation coordinates of the other characteristic line are determined according to the elevation of the other characteristic line.

[0036] In one embodiment, the step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises:

[0037] Obtaining a fourth corresponding relationship between the known characteristic elevation, the preset cross-slope elevation difference and the elevations of other characteristic lines;

[0038] The elevations of the other characteristic lines are determined according to the known characteristic elevations, the preset cross-slope elevation differences and the fourth corresponding relationship, and the elevation coordinates of the other characteristic lines are determined according to the elevations of the other characteristic lines.

[0039] In addition, to achieve the above purpose, the present application also proposes a device for constructing a railway station subgrade model based on characteristic lines, and the device for constructing a railway station subgrade model based on characteristic lines includes:

[0040] A feature line arrangement module is used to arrange the roadbed feature lines based on the railway station design information, obtain the feature line arrangement information, and set the additional attribute information of the roadbed feature lines;

[0041] A coordinate calculation module, used to determine a target roadbed surface characteristic line at a target mileage section based on the characteristic line arrangement information;

[0042] The coordinate calculation module is further used to determine the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information;

[0043] A model building module, used to build a roadbed cross section based on the spatial coordinates of the target roadbed surface feature line and the slope attributes;

[0044] The model building module is also used to build a railway station roadbed model based on the roadbed cross section.

[0045] In addition, to achieve the above-mentioned purpose, the present application also proposes a railway station roadbed model construction device based on characteristic lines, and the railway station roadbed model construction device based on characteristic lines includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the railway station roadbed model construction method based on characteristic lines as described above.

[0046] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the method for constructing a railway station roadbed model based on characteristic lines as described above are implemented.

[0047] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the method for constructing a railway station subgrade model based on characteristic lines as described above.

[0048] The present application provides a method for constructing a railway station subgrade model based on feature lines. Based on the railway station design information, the subgrade surface feature lines are arranged to obtain feature line arrangement information, and additional attribute information of the subgrade surface feature lines is set; based on the feature line arrangement information, the target subgrade surface feature lines at the target mileage section are determined; based on the additional attribute information of the target subgrade surface feature lines and the track line information, the spatial coordinates of the target subgrade surface feature lines are determined; based on the spatial coordinates of the feature points and the transverse subgrade slope section data, the subgrade cross section is constructed; based on the subgrade cross section, the railway station subgrade model is constructed. The present application uses feature lines to describe the subgrade surface and sets additional attributes to more accurately reflect the needs and ensure the accuracy of the railway station subgrade model. After completing the definition of the attributes such as the position, elevation, and slope of the feature lines, the final subgrade model can be obtained without adjusting the fitting, thereby improving the model accuracy and construction efficiency, improving the engineering efficiency, and solving the technical problems of insufficient accuracy and poor construction efficiency of the railway station subgrade model. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0051] Figure 1 This is a flow chart of Embodiment 1 of the method for constructing a railway station subgrade model based on characteristic lines of the present application;

[0052] Figure 2 A schematic diagram of a two-station four-track station according to a method for constructing a railway station subgrade model based on characteristic lines provided in Example 1 of the present application;

[0053] Figure 3 A schematic diagram of shoulder attributes of a method for constructing a railway station roadbed model based on characteristic lines provided in Example 1 of the present application;

[0054] Figure 4 A schematic diagram of the properties of the inner dike of the cutting according to the method for constructing a railway station subgrade model based on characteristic lines provided in the first embodiment of the present application;

[0055] Figure 5 A schematic diagram of slope properties of a method for constructing a railway station subgrade model based on characteristic lines provided in Example 1 of the present application;

[0056] Figure 6 A schematic diagram of a method for calculating the cross slope of a track and a roadbed surface in a method for constructing a railway station roadbed model based on characteristic lines provided in Example 1 of the present application;

[0057] Figure 7 A schematic diagram of a method for calculating the height difference from the track to the rail top in a method for constructing a railway station subgrade model based on characteristic lines provided in Example 1 of the present application;

[0058] Figure 8 A schematic diagram of a method for calculating the cross slope of a slope and the elevation of the other end of a railway station subgrade model based on characteristic lines provided in the first embodiment of the present application;

[0059] Fig. 9 A schematic diagram of a method for calculating the elevation on the other side of a characteristic line in a method for constructing a railway station subgrade model based on a characteristic line provided in Example 1 of the present application;

[0060] Fig.10 This is a schematic diagram of the module structure of a device for constructing a railway station subgrade model based on characteristic lines according to an embodiment of the present application;

[0061] Fig.11 Schematic diagram of the equipment structure of the hardware operating environment involved in the method for constructing a railway station roadbed model based on characteristic lines in an embodiment of the present application.

[0062] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0063] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0064] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0065] The main solution of the embodiment of the present application is: based on the railway station design information, arrange the roadbed surface characteristic lines, obtain the characteristic line arrangement information, and set the additional attribute information of the roadbed surface characteristic lines; based on the characteristic line arrangement information, determine the target roadbed surface characteristic lines at the target mileage section; based on the additional attribute information of the target roadbed surface characteristic lines and the track line information, determine the spatial coordinates of the target roadbed surface characteristic lines; based on the spatial coordinates of the characteristic points and the transverse roadbed slope section data, construct the roadbed cross section; based on the roadbed cross section, construct a railway station roadbed model.

[0066] At present, after completing the design of the control characteristic line, the subgrade surface model needs to be obtained through continuous adjustment and fitting calculation, which makes it difficult to transform the real design intention into the final subgrade model, resulting in an inaccurate model. In addition, the model subgrade engineering technical parameter information is insufficient and cannot meet the requirements of automatic design and drawing of railway station subgrade cross sections, affecting efficiency.

[0067] The present application provides a solution that uses feature lines to describe the roadbed surface and sets additional attributes to more accurately reflect the needs and ensure the accuracy of the railway station roadbed model. After completing the definition of the feature line's position, elevation, slope and other attributes, the final roadbed model can be obtained without adjusting the fitting, thereby improving the model's accuracy and construction efficiency, improving engineering efficiency, and solving the technical problems of insufficient accuracy and poor construction efficiency of the railway station roadbed model.

[0068] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a railway station subgrade model construction device based on characteristic lines, etc., and this embodiment does not specifically limit this. The following takes the railway station subgrade model construction device based on characteristic lines as an example to illustrate this embodiment and the following embodiments.

[0069] The present application embodiment provides a method for constructing a railway station subgrade model based on characteristic lines. Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for constructing a railway station subgrade model based on characteristic lines of the present application.

[0070] In this embodiment, the method for constructing a railway station subgrade model based on characteristic lines includes steps S10 to S50:

[0071] Step S10, arranging the roadbed surface feature lines based on the railway station design information, obtaining feature line arrangement information, and setting additional attribute information of the roadbed surface feature lines;

[0072] It should be noted that the roadbed surface characteristic line, i.e., the control characteristic line of the roadbed surface, is usually a polyline used to represent the position of the ridgeline, ditch, platform, and shoulder of the station field roadbed surface. In this embodiment, the types of roadbed surface characteristic lines include at least ridgeline, shoulder, platform, and drainage ditch. Ridgeline: The raised part of the roadbed surface, both sides have equal elevation and both have slopes; Shoulder: At the shoulder, only one side has a slope, and the slope data of the other side is attached; Drainage ditch: At the longitudinal ditch of the roadbed surface, both sides have slopes, and the elevations may be different; Platform: At the edge of the platform, one side is the roadbed surface, and the other side is the platform, and the elevations of the two sides are different. For example, Figure 2 As shown in the figure, in the two-platform four-track station, the elevation, slopes on both sides, shoulders and side slope data are attached to the plane polyline. The characteristic lines are reflected on the cross section as characteristic points. The shape of the roadbed surface of any section can be determined based on the characteristic points, thereby establishing a three-dimensional model of the station roadbed surface.

[0073] In addition, it should be noted that when the characteristic line is used to represent the shoulder, the shoulder, inner bank, slope and ditch attributes should be added. Figure 3 , Shoulder attributes: The main contents are shoulder connection type (including independent slope, slope connection, retaining wall connection, intersection ditch, intersection without ditch), shoulder material (stone, concrete), shoulder platform width and platform cross slope; reference Figure 4 , In-cut dike properties: the main contents include whether to set up an in-cut dike, the height of the in-cut dike, the slope rate of the in-cut dike, the width of the in-cut dike platform, and the transverse slope of the in-cut dike platform; Slope properties: the main contents include the height and slope rate of slopes at all levels, the width and transverse slope of the platform, the type of slope protection, the type of slope foot (including counter pressure type, lifting type, foot wall type, none), and berm parameters (including the width, transverse slope, height, and slope of the berm); Slope-related ditch properties: used to describe side ditches or embankment drainage ditches, including whether to set up embankment drainage ditches, the distance from the ditch to the slope foot, whether to set up a retaining dam, the distance from the retaining dam to the ditch, whether to set up a gutter, the distance from the gutter to the top of the cut, whether to set up an intercepting ditch, and the distance from the intercepting ditch to the gutter.

[0074] It can be understood that the railway station design information is the relevant design drawings and design data that can reflect the design intent, such as: station track horizontal and vertical diagrams, railway station plan design drawings. Based on the railway station design information, various feature lines are arranged according to the design intent to obtain the overall feature line arrangement, that is, the feature line arrangement information. Each feature line is set with additional attribute information, which is additional related attributes, including at least related tracks, track height differences, transverse slopes, longitudinal elevations, connection relationships between feature lines, roadbed side slopes, roadbed transverse slopes, roadbed layered filling information, drainage ditch types and shapes.

[0075] Step S20, determining a target roadbed surface characteristic line at a target mileage section based on the characteristic line arrangement information;

[0076] It should be noted that the target mileage section is the specified mileage section, and the target roadbed surface feature line is all the roadbed surface feature lines in the target mileage section. All feature lines on the target mileage section are cut to obtain a feature line information array.

[0077] Step S30, determining the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information;

[0078] It should be noted that the track line information refers to the information related to the track in the railway station, such as: track line spacing data, track horizontal and vertical data. The track line spacing data usually includes design number, internal number, type, rail top height, field type, upper construction parameters, etc., which are stored in the line spacing array.

[0079] It can be understood that the spatial coordinates of the target roadbed surface characteristic line are determined by the plane coordinates of the target roadbed surface characteristic line and the elevation coordinates of the target roadbed surface characteristic line.

[0080] In a feasible implementation, step S30 may include steps S301 to S303:

[0081] It should be noted that there is a slope on at least one side of the characteristic line. Figure 5, the slope attributes mainly include the horizontal slope of the surface layer of the subgrade, the horizontal slope of the bottom layer of the subgrade, the roadbed filling type, the side slope of the subgrade, and whether the subgrade is extended. The horizontal slope of the surface layer of the subgrade: When the horizontal slope rate is specified, the horizontal slope is defined from left to right, with positive upward and negative downward, and the slope rate is the quotient of the longitudinal height difference and the horizontal length; when the horizontal slope rate is not specified, the slope rate is controlled by the elevation at both ends of the slope. The horizontal slope of the bottom layer of the subgrade: The horizontal slope rate of the bottom layer of the subgrade is generally the same as that of the surface layer, and its definition rules are the same as the horizontal slope rate of the surface layer of the subgrade. Roadbed filling type: including the main line subgrade, the departure line subgrade, the shunting line subgrade, the pull-out line subgrade, the other station line subgrade, the platform subgrade, the yard subgrade, and the custom subgrade. The side slope of the subgrade: including whether the side slope is set on the left and right sides of the subgrade and the side slope rate. Whether the subgrade is extended: including whether the left and right sides of the subgrade are extended and the extension width value.

[0082] Step S301, determining the plane coordinates of the target roadbed surface feature lines according to the feature line arrangement information;

[0083] It should be noted that the plane coordinates of the target roadbed surface characteristic line can be obtained when the target roadbed surface characteristic line is acquired.

[0084] Step S302, determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information;

[0085] It should be noted that different target roadbed surface characteristic lines need to be calculated in different ways. The target roadbed surface characteristic lines in this embodiment include at least the rail top control characteristic line, the designated characteristic line and other characteristic lines. The rail top control characteristic line needs to use the track control method to calculate the elevation, and needs to be calculated through the rail top elevation, the upper building elevation, the cross slope, etc. The designated characteristic line usually uses a designated method to set the elevation. Other characteristic lines are target roadbed surface characteristic lines except the rail top control characteristic line and the designated characteristic line.

[0086] Firstly, the elevation coordinates of the ballast top groove characteristic line and the platform groove characteristic line in the rail top control characteristic line are calculated.

[0087] In a feasible implementation manner, for the ballast top groove characteristic line, the number of adjacent tracks of the ballast top groove characteristic line is determined according to the track line information; when the number of adjacent tracks meets the first quantity threshold, the difference between the rail top elevation and the groove top to rail top elevation difference is determined according to the track line information, and the difference between the rail top elevation and the groove top to rail top elevation difference is used as the elevation of the ballast top groove characteristic line, and the elevation coordinates of the ballast top groove characteristic line are determined according to the elevation of the ballast top groove characteristic line; when the number of adjacent tracks meets the second quantity threshold, the minimum value of the difference between the rail top elevation and the groove top to rail top elevation difference is determined according to the track line information, and the minimum value of the difference between the rail top elevation and the groove top to rail top elevation difference is used as the elevation of the ballast top groove characteristic line, and the elevation coordinates of the ballast top groove characteristic line are determined according to the elevation of the ballast top groove characteristic line.

[0088] It should be noted that the ballast top ditch feature line is a feature line of type drainage ditch and attributed as ballast top ditch, which belongs to the ditch feature line and is a type of rail top control feature line. The number of adjacent tracks is the number of adjacent tracks. The elevation of the ballast top ditch feature line is divided into two cases when calculated, which is related to the number of adjacent tracks. The first number threshold and the second number threshold are 1 and 2 respectively.

[0089] It can be understood that if the number of adjacent tracks meets the first threshold, it means that there is a track on only one side of the ballast top groove characteristic line. At this time, the elevation of the ballast top groove characteristic line is the rail top elevation minus the height difference from the groove top to the rail top. The height difference from the groove top to the rail top is the elevation difference between the groove top and the rail top. If the number of adjacent tracks meets the second threshold, it means that there are tracks on both sides of the ballast top groove characteristic line. At this time, the rail top elevation minus the height difference from the groove top to the rail top is calculated on both sides, and the smaller value is used as the elevation of the ballast top groove characteristic line. The elevation coordinates of the ballast top groove characteristic line can be determined according to the elevation of the ballast top groove characteristic line.

[0090] In a feasible implementation manner, for the platform trench characteristic line, when the platform trench characteristic line is located on the left side, the difference between the rail top elevation on the left side and the elevation difference from the trench top to the rail top is determined according to the track line information, and the difference between the rail top elevation on the left side and the elevation difference from the trench top to the rail top is used as the elevation of the platform trench characteristic line, and the elevation coordinates of the platform trench characteristic line are determined according to the elevation of the platform trench characteristic line; when the platform trench characteristic line is located on the right side, the difference between the rail top elevation on the right side and the elevation difference from the trench top to the rail top is determined according to the track line information, and the difference between the rail top elevation on the right side and the elevation difference from the trench top to the rail top is used as the elevation of the platform trench characteristic line, and the elevation coordinates of the platform trench characteristic line are determined according to the elevation of the platform trench characteristic line.

[0091] It should be noted that the platform ditch feature line is a feature line of type drainage ditch and attributed as platform ditch. It belongs to the platform type feature line and is a type of rail top control feature line. The elevation of the platform ditch feature line is divided into two cases when calculated, which is related to the position of the feature line.

[0092] It can be understood that if the platform ditch characteristic line is on the left, the elevation of the platform ditch characteristic line is the elevation of the left rail top minus the height difference from the ditch top to the rail top; if the platform ditch characteristic line is on the right, the elevation of the platform ditch characteristic line is the elevation of the right rail top minus the height difference from the ditch top to the rail top. The elevation coordinates of the platform ditch characteristic line can be determined based on the elevation of the platform ditch characteristic line.

[0093] Next, the elevation coordinates of the rail top control characteristic lines other than the ballast top groove characteristic lines and the platform groove characteristic lines and the elevation coordinates of the designated characteristic lines are calculated.

[0094] In a feasible implementation manner, the rail top elevation and the track upper building height are determined according to the track line information; the roadbed surface elevation at the track centerline is determined according to the rail top elevation, the track upper building height and the roadbed cross slope; a first correspondence between the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the elevation of the rail top control characteristic line is obtained; the elevation of the rail top control characteristic line is determined according to the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the first correspondence, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

[0095] It should be noted that the "calculation method based on the cross slope of the track and roadbed" is adopted. The first correspondence between the track top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the elevation of the track top control characteristic line is the calculation formula of the track top control characteristic line elevation, as shown below:

[0096] H=H 轨顶 -H 上建 +L 点距轨中 ×i

[0097] Where H represents the height of the rail top control characteristic line, H 轨顶 Indicates the rail top elevation, H 上建 Indicates the height of the building above the track (including the cross slope correction value), i indicates the cross slope of the roadbed, from left to right, upward is positive and downward is negative, L 点距轨中 It represents the length between the offset value at the characteristic line and the offset value of the track center line. Substituting the relevant data into the above first corresponding relationship, the elevation of the corresponding rail top control characteristic line can be calculated, thereby obtaining the elevation coordinates.

[0098] It can be understood that when the track elevation near the characteristic line is determined, the elevation of the subgrade surface at the track centerline is calculated by the track top elevation, the track upper building height, and the subgrade cross slope. Then, the subgrade surface elevation at the characteristic line is calculated based on the subgrade cross slope, such as Figure 6 The elevation of point A can be calculated based on the rail top angle and the cross slope of the roadbed.

[0099] In a feasible implementation manner, the rail top elevation is determined based on the track line information; a second correspondence between the rail top elevation, a preset rail top elevation difference and the elevation of the rail top control characteristic line is obtained; the elevation of the rail top control characteristic line is determined based on the rail top elevation, the preset rail top elevation difference and the second correspondence, and the elevation coordinates of the rail top control characteristic line are determined based on the elevation of the rail top control characteristic line.

[0100] It should be noted that the method of "calculating by track and rail top elevation difference" is adopted. The preset rail top elevation difference is the pre-specified elevation difference with the rail top, which is positive if it is higher than the rail top and negative if it is lower than the rail top. The second corresponding relationship between the rail top elevation, the preset rail top elevation difference and the elevation of the rail top control characteristic line, i.e., the calculation relationship of the elevation of the rail top control characteristic line, is as follows:

[0101] H=H 轨顶 +H 高差

[0102] Where H represents the height of the rail top control characteristic line, H 轨顶 Indicates the rail top elevation, H 高差 Represents the preset rail top height difference. Substituting the relevant data into the above second corresponding relationship, the elevation of the corresponding rail top control characteristic line can be calculated, thereby obtaining the elevation coordinates.

[0103] Understandably, reference Figure 7 When the track elevation adjacent to the characteristic line is clear, the roadbed surface elevation at the characteristic line can be directly calculated by specifying the rail top height difference.

[0104] In a feasible implementation manner, a preset elevation is used as the elevation of the designated characteristic line, and the elevation coordinates of the designated characteristic line are determined according to the elevation of the designated characteristic line.

[0105] It should be noted that the "directly specified elevation method" is adopted. The specified feature line is the feature line of the specified elevation, and the preset elevation is the specified elevation.

[0106] It is understandable that an absolute elevation is directly assigned to the feature line. In this process, the starting point and the end point of the feature line can be assigned elevations to accommodate the situation where there is an elevation difference.

[0107] Then calculate the elevation coordinates of other feature lines.

[0108] In a feasible implementation manner, a third correspondence between the known slope end elevation, slope length, roadbed cross slope and the elevations of other characteristic lines is obtained; the elevations of the other characteristic lines are determined based on the known slope end elevation, slope length, roadbed cross slope and the third correspondence, and the elevation coordinates of the other characteristic lines are determined based on the elevations of the other characteristic lines.

[0109] It should be noted that the method of "calculating by the cross slope of the slope and the elevation of the other end" is adopted. The known elevation of the slope end refers to the elevation of one end of the slope, which is known. The third corresponding relationship between the elevation of the known slope end, the slope length, the cross slope of the roadbed and the elevation of other characteristic lines, that is, the calculation relationship of the elevation of other characteristic lines, is as follows:

[0110] H=H 另一端 +L 坡面长 ×i

[0111] In the formula, H represents the elevation of other characteristic lines, H 另一端 Indicates the known elevation of one end of the slope, that is, the known elevation of the slope end, L 坡面长 represents the length of the slope, and i represents the transverse slope of the roadbed. Substituting the relevant data into the third corresponding relationship above, the elevation of the corresponding other characteristic lines can be calculated, thereby obtaining the elevation coordinates.

[0112] Understandably, reference Figure 8 When the elevation and transverse slope of one end of the slope are known, the elevation of the other end can be directly calculated through the length of the slope, thereby determining the corresponding elevation coordinates.

[0113] In a feasible implementation manner, a fourth correspondence between a known characteristic elevation, a preset cross-slope elevation difference and the elevations of other characteristic lines is obtained; the elevations of the other characteristic lines are determined based on the known characteristic elevation, the preset cross-slope elevation difference and the fourth correspondence; and based on the elevations of the other characteristic lines, the elevation coordinates of the other characteristic lines are determined.

[0114] It should be noted that the method of "calculating by the elevation on the other side of the characteristic line" is adopted. The known characteristic elevation refers to the known elevation of the characteristic line on one side, and the preset cross-slope elevation difference refers to the preset elevation difference across the slope surface. The fourth corresponding relationship between the known characteristic elevation, the preset cross-slope elevation difference and the elevation of other characteristic lines, that is, the calculation relationship of the elevation of other characteristic lines, is as follows:

[0115] H=H 另一侧 +H 跨坡高差

[0116] In the formula, H represents the elevation of other characteristic lines, H 另一侧 Indicates the known characteristic line elevation on one side, that is, the known characteristic elevation, H 跨坡高差Indicates the preset cross-slope height difference. Substituting the relevant data into the fourth corresponding relationship above, the elevation of other corresponding characteristic lines can be calculated, thereby obtaining the elevation coordinates.

[0117] Understandably, reference Fig. 9 When there are slopes on both sides of the characteristic line and the elevation of one side is known, the elevation of the other side can be calculated by setting the elevation difference, thereby realizing the transmission of elevation values ​​across the slope.

[0118] In the specific implementation, the characteristic line elevation of the drainage ditch type and the attribute of ballast top ditch or platform ditch is calculated first; then the elevation of the slope point controlled by the rail top or the specified elevation is calculated, and the elevation of the slope change point of the three calculation methods of "calculation method from the cross slope of the track and the roadbed surface", "calculation method from the height difference between the track and the rail top", and "directly specifying the elevation" are calculated to obtain the three-dimensional coordinates of all characteristic points; then according to the methods of "calculation from the elevation and cross slope of the other end of the slope", "calculation from the elevation and height difference of the other end of the slope", and "calculation from the elevation on the other side of the point and the specified height difference", the loop traversal method is repeatedly used to calculate the elevation of the remaining slope change points until all calculations are completed or no new elevation value is calculated.

[0119] Step S303, obtaining the spatial coordinates of the target roadbed surface feature line according to the plane coordinates and elevation coordinates of the target roadbed surface feature line.

[0120] It can be understood that the spatial coordinates of the target roadbed surface characteristic line are determined based on the plane coordinates and elevation coordinates of the target roadbed surface characteristic line.

[0121] Step S40, constructing a roadbed cross section based on the spatial coordinates of the target roadbed surface feature line and the slope attributes;

[0122] It should be noted that the characteristic lines on the target mileage section are sorted from left to right, and the left and right slope attributes of two adjacent characteristic lines are judged in turn. If there is information about setting up slope sections on both the left and right sides, the slope section data is constructed using the engineering information on the characteristic points to form a slope section array. When the descriptions of the roadbed filling thickness, type, etc. of the slope at the two slope change points are inconsistent, the higher level roadbed type is selected.

[0123] It can be understood that based on the geometric data and engineering properties of the target roadbed surface characteristic lines and slope segment array, the left and right characteristic lines and slope surface designs of the slope segments are completed one by one, thereby completing the design of the entire section.

[0124] Step S50: constructing a railway station roadbed model based on the roadbed cross section.

[0125] It should be noted that based on the characteristic lines and the horizontal and vertical tracks of the entire station, the cross-section design of the entire station is automatically completed according to the target mileage section and displayed in the three-dimensional space coordinate system, providing section slicing materials for quickly constructing the three-dimensional geometric model of the station roadbed.

[0126] In the specific implementation, based on the station plan design drawing, the ridge line, shoulder, platform, drainage ditch and other characteristic line entities are used to continuously describe the roadbed surface contour line; additional attributes are added to the contour line to record parameter information including the associated track, the height difference with the track, the transverse slope, the longitudinal elevation, the connection relationship between characteristic lines, the roadbed slope, the roadbed cross slope, the roadbed layer filling information, the type and shape of the drainage ditch, etc.; the description rules of the additional attributes are formulated, and the spatial coordinates of each characteristic line are calculated through the rules and the horizontal and vertical data of the station track. The station roadbed cross-section design is automatically completed through the spatial coordinates of the characteristic lines and the roadbed cross slope, the roadbed layer filling information, the roadbed slope, the connection relationship between the slopes, etc., to meet the production design requirements of the cross-section drawings; the whole station cross-section design is automatically carried out based on the characteristic lines and displayed in three-dimensional space, providing cross-section slice materials for the rapid construction of the station roadbed model.

[0127] This embodiment provides a method for constructing a railway station subgrade model based on feature lines. Based on the railway station design information, the subgrade surface feature lines are arranged to obtain feature line arrangement information, and additional attribute information of the subgrade surface feature lines is set; based on the feature line arrangement information, the target subgrade surface feature lines at the target mileage section are determined; based on the additional attribute information of the target subgrade surface feature lines and the track line information, the spatial coordinates of the target subgrade surface feature lines are determined; based on the spatial coordinates of the feature points and the transverse subgrade slope section data, the subgrade cross section is constructed; based on the subgrade cross section, the railway station subgrade model is constructed. The subgrade surface is described by feature lines, and additional attributes are set to more accurately reflect the requirements, ensure the accuracy of the railway station subgrade model, and automatically complete the subgrade cross section design, provide section slicing materials for quickly constructing the subgrade model, improve the model construction efficiency, improve the engineering efficiency, and solve the technical problems of insufficient accuracy and poor construction efficiency of the railway station subgrade model.

[0128] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the method for constructing a railway station subgrade model based on characteristic lines in the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0129] This application also provides a device for constructing a railway station subgrade model based on characteristic lines. Fig.10 The device for constructing a railway station subgrade model based on characteristic lines comprises:

[0130] The feature line arrangement module 10 is used to arrange the roadbed feature lines based on the railway station design information, obtain the feature line arrangement information, and set the additional attribute information of the roadbed feature lines.

[0131] The coordinate calculation module 20 is used to determine the target roadbed surface characteristic line at the target mileage section based on the characteristic line arrangement information.

[0132] The coordinate calculation module 20 is further used to determine the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information.

[0133] The model building module 30 is used to build a roadbed cross section based on the spatial coordinates of the target roadbed surface feature lines and slope attributes.

[0134] The model building module 30 is also used to build a railway station roadbed model based on the roadbed cross section.

[0135] In a feasible implementation manner, the plane coordinates of the target roadbed surface characteristic lines are determined according to the characteristic line arrangement information;

[0136] Determine the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information, wherein the additional attribute information at least includes the associated track, track height difference, transverse slope, longitudinal elevation, connection relationship between feature lines, roadbed side slope, roadbed cross slope, roadbed layer filling information, drainage ditch type and shape, and the target roadbed surface feature line at least includes the ballast top ditch feature line, platform ditch feature line, rail top control feature line, designated feature line and other feature lines;

[0137] The spatial coordinates of the target roadbed surface feature line are obtained according to the plane coordinates and the elevation coordinates of the target roadbed surface feature line.

[0138] In a feasible implementation manner, the rail top control characteristic line is a ballast top groove characteristic line;

[0139] According to the track line information, determining the number of adjacent tracks of the ballast top ditch characteristic line;

[0140] When the number of adjacent tracks meets a first number threshold, determining, according to the track line information, a difference between the rail top elevation and the height difference from the groove top to the rail top, taking the difference between the rail top elevation and the height difference from the groove top to the rail top as the elevation of the ballast top groove characteristic line, and determining the elevation coordinates of the ballast top groove characteristic line according to the elevation of the ballast top groove characteristic line;

[0141] When the number of adjacent tracks meets the second quantity threshold, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is determined according to the track line information, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is used as the elevation of the ballast top groove characteristic line, and the elevation coordinates of the ballast top groove characteristic line are determined according to the elevation of the ballast top groove characteristic line.

[0142] In a feasible implementation manner, the rail top control characteristic line is a platform groove characteristic line;

[0143] When the platform groove characteristic line is located on the left side, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is determined according to the track line information, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is used as the elevation of the platform groove characteristic line, and the elevation coordinates of the platform groove characteristic line are determined according to the elevation of the platform groove characteristic line;

[0144] When the platform trench characteristic line is located on the right side, the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is determined according to the track line information, and the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is used as the elevation of the platform trench characteristic line, and the elevation coordinates of the platform trench characteristic line are determined according to the elevation of the platform trench characteristic line.

[0145] In a feasible implementation manner, the rail top elevation and the height of the building above the track are determined according to the track line information;

[0146] Determine the elevation of the roadbed surface at the track centerline according to the rail top elevation, the track upper building height and the roadbed cross slope;

[0147] Obtaining the first correspondence between the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the rail top control characteristic line elevation;

[0148] The elevation of the rail top control characteristic line is determined according to the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the first corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

[0149] In a feasible implementation manner, the rail top elevation is determined according to the track line information;

[0150] Acquire a second corresponding relationship between the rail top elevation, the preset rail top elevation difference and the elevation of the rail top control characteristic line;

[0151] The elevation of the rail top control characteristic line is determined according to the rail top elevation, the preset rail top elevation difference and the second corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

[0152] In a feasible implementation manner, a preset elevation is used as the elevation of the designated characteristic line, and the elevation coordinates of the designated characteristic line are determined according to the elevation of the designated characteristic line.

[0153] In a feasible implementation, a third corresponding relationship between the known slope end elevation, slope length, roadbed cross slope and elevations of other characteristic lines is obtained;

[0154] The elevation of the other characteristic line is determined according to the known slope end elevation, slope length, roadbed transverse slope and the third corresponding relationship, and the elevation coordinates of the other characteristic line are determined according to the elevation of the other characteristic line.

[0155] In a feasible implementation manner, a fourth corresponding relationship between the known characteristic elevation, the preset cross-slope elevation difference and the elevation of other characteristic lines is obtained;

[0156] The elevations of the other characteristic lines are determined according to the known characteristic elevations, the preset cross-slope elevation differences and the fourth corresponding relationship, and the elevation coordinates of the other characteristic lines are determined according to the elevations of the other characteristic lines.

[0157] The device for constructing a railway station roadbed model based on characteristic lines provided by the present application adopts the method for constructing a railway station roadbed model based on characteristic lines in the above-mentioned embodiment, and can solve the technical problems of insufficient accuracy and poor construction efficiency of the railway station roadbed model. Compared with the prior art, the beneficial effects of the device for constructing a railway station roadbed model based on characteristic lines provided by the present application are the same as the beneficial effects of the method for constructing a railway station roadbed model based on characteristic lines provided by the above-mentioned embodiment, and the other technical features of the device for constructing a railway station roadbed model based on characteristic lines are the same as the features disclosed in the above-mentioned embodiment method, and will not be repeated here.

[0158] The present application provides a device for constructing a railway station roadbed model based on characteristic lines, and the device for constructing a railway station roadbed model based on characteristic lines includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method for constructing a railway station roadbed model based on characteristic lines in the above-mentioned embodiment one.

[0159] Reference below Fig.11, which shows a schematic diagram of the structure of a railway yard subgrade model construction device based on characteristic lines suitable for implementing the embodiment of the present application. The railway yard subgrade model construction device based on characteristic lines in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Fig.11 The railway yard roadbed model construction equipment based on characteristic lines shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0160] like Fig.11 As shown, the railway yard subgrade model construction equipment based on characteristic lines may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 to the random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the railway yard subgrade model construction equipment based on characteristic lines are also stored in RAM1004. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems may be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 may allow the characteristic line-based railway yard subgrade model construction device to communicate wirelessly or wired with other devices to exchange data. Although the characteristic line-based railway yard subgrade model construction device with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0161] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0162] The railway station roadbed model construction device based on characteristic lines provided by the present application adopts the railway station roadbed model construction method based on characteristic lines in the above-mentioned embodiment, which can solve the technical problems of insufficient accuracy and poor construction efficiency of the railway station roadbed model. Compared with the prior art, the beneficial effects of the railway station roadbed model construction device based on characteristic lines provided by the present application are the same as the beneficial effects of the railway station roadbed model construction method based on characteristic lines provided by the above-mentioned embodiment, and the other technical features of the railway station roadbed model construction device based on characteristic lines are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0163] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0164] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0165] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the method for constructing a railway yard subgrade model based on characteristic lines in the above-mentioned embodiment.

[0166] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0167] The computer-readable storage medium may be included in the device for constructing a railway yard subgrade model based on characteristic lines; or may exist independently without being assembled into the device for constructing a railway yard subgrade model based on characteristic lines.

[0168] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the railway station roadbed model construction device based on feature lines, the railway station roadbed model construction device based on feature lines: arranges roadbed surface feature lines based on railway station design information, obtains feature line arrangement information, and sets additional attribute information of the roadbed surface feature lines; determines the target roadbed surface feature lines at the target mileage section based on the feature line arrangement information; determines the spatial coordinates of the target roadbed surface feature lines based on the additional attribute information of the target roadbed surface feature lines and the track line information; constructs a roadbed cross section based on the spatial coordinates of the feature points and the transverse roadbed slope section data; and constructs a railway station roadbed model based on the roadbed cross section.

[0169] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0170] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0171] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0172] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned method for constructing a railway station subgrade model based on characteristic lines, and can solve the technical problems of insufficient accuracy and poor construction efficiency of the railway station subgrade model. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the method for constructing a railway station subgrade model based on characteristic lines provided by the above-mentioned embodiment, and will not be described in detail here.

[0173] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method for constructing a railway yard subgrade model based on characteristic lines as described above.

[0174] The computer program product provided by the present application can solve the technical problems of insufficient accuracy and poor construction efficiency of the railway station subgrade model. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the railway station subgrade model construction method based on characteristic lines provided in the above embodiment, which will not be described in detail here.

[0175] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for constructing a railway station subgrade model based on characteristic lines, characterized in that: The method comprises: Arrange the roadbed surface feature lines based on the railway station design information, obtain the feature line arrangement information, and set the additional attribute information of the roadbed surface feature lines; Based on the characteristic line arrangement information, determining a target roadbed surface characteristic line at a target mileage section; Determine the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information; Constructing a roadbed cross section based on the spatial coordinates of the target roadbed surface characteristic line and the slope attributes; Based on the roadbed cross section, a railway station roadbed model is constructed.

2. The method according to claim 1, characterized in that The types of the roadbed surface feature lines include at least ridge lines, shoulders, platforms and drainage ditches. The step of determining the spatial coordinates of the target roadbed surface feature lines based on the additional attribute information and track line information of the target roadbed surface feature lines includes: Determining the plane coordinates of the target roadbed surface feature lines according to the feature line arrangement information; Determine the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information, wherein the additional attribute information at least includes the associated track, track height difference, transverse slope, longitudinal elevation, connection relationship between feature lines, roadbed side slope, roadbed cross slope, filling information of each layer of the roadbed, drainage ditch type and shape, and the target roadbed surface feature line at least includes the rail top control feature line, the designated feature line and other feature lines; The spatial coordinates of the target roadbed surface feature line are obtained according to the plane coordinates and the elevation coordinates of the target roadbed surface feature line.

3. The method according to claim 2, characterized in that The rail top control characteristic line is a ballast top groove characteristic line, and the step of determining the elevation coordinates of the target roadbed surface characteristic line according to the additional attribute information of the target roadbed surface characteristic line and the track line information comprises: According to the track line information, determining the number of adjacent tracks of the ballast top ditch characteristic line; When the number of adjacent tracks meets a first number threshold, determining, according to the track line information, a difference between the rail top elevation and the height difference from the groove top to the rail top, taking the difference between the rail top elevation and the height difference from the groove top to the rail top as the elevation of the ballast top groove characteristic line, and determining the elevation coordinates of the ballast top groove characteristic line according to the elevation of the ballast top groove characteristic line; When the number of adjacent tracks meets the second quantity threshold, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is determined according to the track line information, the minimum value of the difference between the rail top elevation and the height difference from the groove top to the rail top is used as the elevation of the ballast top groove characteristic line, and the elevation coordinates of the ballast top groove characteristic line are determined according to the elevation of the ballast top groove characteristic line.

4. The method according to claim 2, characterized in that The rail top control characteristic line is a platform groove characteristic line, and the step of determining the elevation coordinates of the target roadbed surface characteristic line according to the additional attribute information of the target roadbed surface characteristic line and the track line information comprises: When the platform groove characteristic line is located on the left side, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is determined according to the track line information, the difference between the rail top elevation on the left side and the height difference from the groove top to the rail top is used as the elevation of the platform groove characteristic line, and the elevation coordinates of the platform groove characteristic line are determined according to the elevation of the platform groove characteristic line; When the platform trench characteristic line is located on the right side, the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is determined according to the track line information, and the difference between the rail top elevation on the right side and the height difference from the trench top to the rail top is used as the elevation of the platform trench characteristic line, and the elevation coordinates are determined according to the elevation of the platform trench characteristic line.

5. The method according to claim 2, characterized in that The step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises: Determine the rail top elevation and the height of the building above the track based on the track line information; Determine the elevation of the roadbed surface at the track centerline according to the rail top elevation, the track upper building height and the roadbed cross slope; Obtaining the first correspondence between the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the rail top control characteristic line elevation; The elevation of the rail top control characteristic line is determined according to the rail top elevation, the track upper building height, the roadbed cross slope, the roadbed surface elevation at the track centerline and the first corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

6. The method according to claim 2, characterized in that The step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises: Determine the rail top elevation according to the track line information; Acquire a second corresponding relationship between the rail top elevation, the preset rail top elevation difference and the elevation of the rail top control characteristic line; The elevation of the rail top control characteristic line is determined according to the rail top elevation, the preset rail top elevation difference and the second corresponding relationship, and the elevation coordinates of the rail top control characteristic line are determined according to the elevation of the rail top control characteristic line.

7. The method according to claim 2, characterized in that The step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises: The preset elevation is used as the elevation of the designated characteristic line, and the elevation coordinates of the designated characteristic line are determined according to the elevation of the designated characteristic line.

8. The method according to claim 2, characterized in that The step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises: Obtain the third correspondence between the known slope end elevation, slope length, roadbed cross slope and elevations of other characteristic lines; The elevation of the other characteristic line is determined according to the known slope end elevation, slope length, roadbed transverse slope and the third corresponding relationship, and the elevation coordinates of the other characteristic line are determined according to the elevation of the other characteristic line.

9. The method according to claim 2, characterized in that The step of determining the elevation coordinates of the target roadbed surface feature line according to the additional attribute information of the target roadbed surface feature line and the track line information comprises: Obtaining a fourth corresponding relationship between the known characteristic elevation, the preset cross-slope elevation difference and the elevations of other characteristic lines; The elevations of the other characteristic lines are determined according to the known characteristic elevations, the preset cross-slope elevation differences and the fourth corresponding relationship, and the elevation coordinates of the other characteristic lines are determined according to the elevations of the other characteristic lines.

10. A device for constructing a railway station subgrade model based on characteristic lines, characterized in that: The device for constructing a railway station subgrade model based on characteristic lines comprises: A feature line arrangement module is used to arrange the roadbed feature lines based on the railway station design information, obtain the feature line arrangement information, and set the additional attribute information of the roadbed feature lines; A coordinate calculation module, used to determine a target roadbed surface characteristic line at a target mileage section based on the characteristic line arrangement information; The coordinate calculation module is further used to determine the spatial coordinates of the target roadbed surface feature line based on the additional attribute information of the target roadbed surface feature line and the track line information; A model building module, used to build a roadbed cross section based on the spatial coordinates of the target roadbed surface feature line and the slope attributes; The model building module is also used to build a railway station roadbed model based on the roadbed cross section.

Images