A parametric design method and system for rail transit roadbed

Abstract

The present invention discloses a parametric design method and system for a rail transit roadbed, the method comprising: obtaining topographic primitives, selecting contour lines, elevation blocks, elevation points, and generating an original topographic surface with a surface boundary; obtaining a standardized intersection table, a curve table, and a broken link table, and drawing a plane route, and creating a surface longitudinal section view after specifying a longitudinal section view style, a pile number range, and a longitudinal section view height according to the original topographic surface and the plane route; generating a corresponding model according to the surface longitudinal section view, setting parameter values ​​that meet design requirements, and adding corresponding annotations to the corresponding model to generate a corresponding plane view; and specifying a pile number range and a cross-section view style that need to be drawn according to the corresponding plane view, and creating a cross-section view.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit roadbed parameter design, and more specifically, relates to a rail transit roadbed parameterized design method and system. Background Art

[0002] Currently, there is no specialized design software for railway subgrades. The subgrade profession still remains in the traditional two-dimensional design mode. The complex characteristics of the profession affect the development speed of parametric design. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a parametric design method for rail transit roadbed, comprising:

[0004] Get terrain primitives, select contour lines, elevation blocks, elevation points, and generate original terrain surfaces with surface boundaries;

[0005] Obtaining standardized intersection tables, curve tables, and broken link tables, and drawing a plane route, and creating a surface profile after specifying a profile style, a pile number range, and a profile height according to the original terrain surface and the plane route;

[0006] Generate a corresponding model according to the curved surface longitudinal section, set parameter values ​​that meet the design requirements, add corresponding annotations on the corresponding model, and generate a corresponding plane view;

[0007] According to the corresponding plan view, specify the pile number range and cross-section view style to be drawn, and create the cross-section view.

[0008] Furthermore, it also includes: setting up a roadbed template file, selecting and entering basic project information.

[0009] Furthermore, according to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, a surface longitudinal section view is created, which also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; according to the Δ value, completing the shoulder longitudinal section creation.

[0010] Furthermore, the parameter values ​​set to meet the design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

[0011] Furthermore, it also includes: generating a roadbed structure material volume table, a total excavation and filling volume table and a slope surface according to the cross-sectional diagram, and counting the slope area and the drainage ditch length.

[0012] The present invention also proposes a rail transit roadbed parametric design system, comprising:

[0013] Generate original terrain surface module, used to obtain terrain primitives, select contour lines, elevation blocks, elevation points, and generate original terrain surface with surface boundaries;

[0014] A surface profile creation module is used to obtain a standardized intersection table, a curve table, a broken link table, and draw a plane route. According to the original terrain surface and the plane route, after specifying the profile style, the pile number range, and the profile height, a surface profile is created;

[0015] A plane diagram generating module is used to generate a corresponding model according to the curved surface longitudinal section diagram, set parameter values ​​that meet the design requirements, and add corresponding annotations on the corresponding model to generate a corresponding plane diagram;

[0016] The cross-section view creation module is used to create a cross-section view according to the corresponding plan view by specifying the pile number range and cross-section view style to be drawn.

[0017] Furthermore, it also includes: setting up a roadbed template file, selecting and entering basic project information.

[0018] Furthermore, according to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, a surface longitudinal section view is created, which also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; according to the Δ value, completing the shoulder longitudinal section creation.

[0019] Furthermore, the parameter values ​​set to meet the design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

[0020] Furthermore, it also includes: generating a roadbed structure material volume table, a total excavation and filling volume table and a slope surface according to the cross-sectional diagram, and counting the slope area and the drainage ditch length.

[0021] Compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

[0022] The present invention clarifies the parametric design method for railway roadbed design and establishes design tool software to achieve rapid processing, parametric input, automatic modeling, automatic labeling, and automatic calculation of workload, greatly improving the design work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flow chart of the method of embodiment 1 of the present invention;

[0024] Figure 2 It is a system structure diagram of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The method provided by the present invention can be implemented in the following terminal environment, and the terminal may include one or more of the following components: a processor, a storage medium, and a display screen. The storage medium stores at least one instruction, and the instruction is loaded and executed by the processor to implement the method described in the following embodiment.

[0027] The processor may include one or more processing cores. The processor uses various interfaces and lines to connect various parts in the entire terminal, and executes various functions of the terminal and processes data by running or executing instructions, programs, code sets or instruction sets stored in the storage medium, and calling data stored in the storage medium.

[0028] The storage medium may include a random access memory (RAM) or a read-only memory (ROM). The storage medium may be used to store instructions, programs, codes, code sets or instructions.

[0029] The display is used to show the interactive cross-section of each application.

[0030] All subscripts in the formulas of the present invention are only used to distinguish parameters and have no actual meaning.

[0031] In addition, those skilled in the art can understand that the structure of the above terminal does not constitute a limitation on the terminal, and the terminal may include more or fewer components, or combine certain components, or arrange the components differently. For example, the terminal also includes components such as a radio frequency circuit, an input unit, a sensor, an audio circuit, and a power supply, which will not be described in detail here.

[0032] The present invention is a parametric design tool for railway subgrade based on the secondary development of Civil 3D software, including subgrade component design module (subgrade, pavement, slope, drainage ditch, side ditch, retaining wall, rapids trough, etc.), subgrade assembly design module, subgrade intelligent segmentation module and achievement output module (drawing, workload calculation).

[0033] Example 1

[0034] like Figure 1 As shown, the present invention proposes a parametric design method for rail transit roadbed, comprising:

[0035] Step 101, obtaining terrain primitives, selecting contour lines, elevation blocks, elevation points, and generating an original terrain surface with a surface boundary;

[0036] Step 102, obtaining a standardized intersection table, curve table, and broken link table, and drawing a plane route, and creating a surface profile after specifying a profile style, a pile number range, and a profile height according to the original terrain surface and the plane route;

[0037] Step 103, generating a corresponding model according to the curved surface longitudinal section view, setting parameter values ​​that meet the design requirements, and adding corresponding annotations on the corresponding model to generate a corresponding plan view;

[0038] Step 104, according to the corresponding plan view, specify the pile number range and cross-section view style to be drawn, and create a cross-section view.

[0039] Specifically, this embodiment provides the following specific steps:

[0040] 1. Select and enter the basic information of the project from the roadbed template file embedded in the program.

[0041] 2. Build a digital ground model. Convert the topographic map into a three-dimensional surface. Call the interface of Civil 3D software and integrate its native functions to effectively filter out the wrong elevation points, contour lines, steep slopes and other factors that affect the normal construction of the triangulation network in the topographic map, and remove the original terrain surface for rapid creation.

[0042] 3. Input data. Call the interface design function of Civil 3D software. Import the line plane and line longitudinal section to convert the line into three dimensions; import the broken link table to establish the professional mileage pile number of the line; import the line spacing table to determine the relative position of the spacing between the left and right lines; enter the track structure height, and calculate the shoulder design elevation by subtracting the track surface elevation and the track structure height; import the station, bridge, and tunnel location information table to realize the automatic segmentation of the design section and select the design range.

[0043] 4. Clarify the basic regulations. Specifically include: 1) Shoulder elevation calculation, according to the input track structure height, the rail surface elevation is deducted and converted into the shoulder design elevation. The shoulder design elevation is an important reference parameter for roadbed design; 2) Roadbed surface shape regulations, according to the track structure form, the roadbed surface shape is determined (please refer to the "Railway Roadbed Design Code" (TB 10001-2016) 3.2.1 regulations); 3) Roadbed surface width regulations, to achieve parametric design, after the shoulder width, roadbed width, line spacing and other parameters are clarified, the overall roadbed surface width is determined (refer to TB 10001-20163.2.3); 4) Roadbed surface widening rules, determine the roadbed surface width of the curve widening section, set the widening principle, and automatically widen the entire line roadbed according to the line data read (refer to TB

[0044] 10001-20163.2.7).

[0045] 5. Filling regulations. Determine the filling form of the subgrade to facilitate subsequent drawing and engineering quantity calculation. The subgrade is generally composed of two layers, namely the subgrade surface layer and the subgrade bottom layer. Filling regulations are also required below the subgrade bottom layer. Some complex projects may have six different filling materials in one section, and the filling rules need to reserve enough fields. The function of setting different subgrade design rules in sections needs to be provided.

[0046] 6. Slope design. Including embankment slope and cutting slope, specify the slope classification height, slope rate of each level of slope, width of slope platform set at each level of slope, etc. Different slope protection forms are specified for each level of slope, and segmented design can be carried out according to needs (refer to TB 10001-20167.4).

[0047] 7. Transition section design. According to the location of the bridge, tunnel, culvert and dike, determine the location of the transition section, make special filling provisions, and deduct the original filling. Determine the length of the transition section according to the parameters, automatically calculate the number of related projects in the transition section, and show the graphics in the longitudinal section drawing results.

[0048] 8. Foundation treatment. Set up sections for foundation treatment to facilitate subsequent engineering quantity calculation and chart output. Specifically, based on the previous three-dimensional results, calculate the base area within the length range of the foundation treatment to calculate the engineering quantity. At the same time, the sections for replacement and pile foundation treatment are indicated on the longitudinal section.

[0049] 9. Design of retaining structures. Establish a database of commonly used retaining walls, select and call according to the retaining wall structure form, and implement parametric design. The retaining wall size can be adjusted, and the materials, etc. can be specified, and the engineering quantity per linear meter can be counted. Associate the retaining wall structure form data, count the engineering quantity according to the section setting, and show it on the longitudinal section diagram.

[0050] 10. Drainage and drainage regulations. Carry out basic design for embankment drainage ditches, cutting side ditches, cutting gutters, blind pipes, slope seepage ditches, drainage pipes across the roadbed, seepage culverts, tunnels and their inspection wells. Parameterize the above structural styles, materials, and dimensions, and set their setting positions in a related manner. After the settings are completed, the longitudinal section of the drainage facilities will be automatically checked. The elevation of the ditch bottom along the same drainage facility will be automatically identified based on the three-dimensional space, and arranged according to the mileage pile number. The elevation can be checked to avoid the lack of drainage outlet at the lowest position of the drainage facility.

[0051] 11. Automatic drawing and engineering quantity calculation; call the special function of the interface design of Civil 3D software. Develop annotation optimization functions that meet the drawing requirements. Specify the pile number range, cross-section drawing style (including label set style), etc. to be drawn, and automatically create cross-section drawings. Can directly generate the volume table of roadbed structure materials and the total volume table of cut and fill; can automatically generate slope surfaces, and count the slope area and drainage ditch length. Can output the selected table as a local csv file.

[0052] Specifically, this embodiment optimizes the slope protection segmentation labeling through the following algorithm:

[0053]

[0054] Among them, L ij is the length from the i-th section of roadbed to the j-th section of roadbed, s j is the end point of the j-th section of roadbed, s i is the starting point of the i-th section of roadbed, H is the terrain height, s′ is the horizontal distance from the i-th section of roadbed to the j-th section of roadbed, α is the first adjustment factor of the slope protection segmentation marking, β is the second adjustment factor of the slope protection segmentation marking, γ is the third adjustment factor of the slope protection segmentation marking, and ω is the fourth adjustment factor of the slope protection segmentation marking.

[0055] Specifically, this embodiment optimizes the drainage component labeling through the following algorithm:

[0056]

[0057] Among them, V i′ is the volume of the i′th drainage structure, t is the time, A is the cross-sectional area of ​​the drainage component, v is the water flow velocity of the drainage component, γ′ is the first adjustment factor marked on the drainage component, δ is the second adjustment factor marked on the drainage component, η is the third adjustment factor marked on the drainage component, and φ is the fourth adjustment factor marked on the drainage component.

[0058] Specifically, this embodiment analyzes the structural load of the roadbed through the following algorithm:

[0059]

[0060] Among them, F i For the i 段 The stress on the roadbed, L is the i-th 段 Length of roadbed, q 静 (x, t) is the static load at position x on the ith section of the roadbed at time t, α′ t is the first load adjustment factor at time t, β t ″ is the second load adjustment factor at time t, ω t″ is the third load adjustment factor at time t, α″ is the first structural load adjustment factor, β″′ is the second structural load adjustment factor, γ″′ is the third structural load adjustment factor, and ω′ is the fourth structural load adjustment factor.

[0061] Example 2

[0062] like Figure 2 As shown, the embodiment of the present invention further provides a rail transit roadbed parametric design system, including:

[0063] Generate original terrain surface module, used to obtain terrain primitives, select contour lines, elevation blocks, elevation points, and generate original terrain surface with surface boundaries;

[0064] A surface profile creation module is used to obtain a standardized intersection table, a curve table, a broken link table, and draw a plane route. According to the original terrain surface and the plane route, after specifying the profile style, the pile number range, and the profile height, a surface profile is created;

[0065] A plane diagram generating module is used to generate a corresponding model according to the curved surface longitudinal section diagram, set parameter values ​​that meet the design requirements, and add corresponding annotations on the corresponding model to generate a corresponding plane diagram;

[0066] The cross-section view creation module is used to create a cross-section view according to the corresponding plan view by specifying the pile number range and cross-section view style to be drawn.

[0067] Specifically, it also includes: setting up the roadbed template file, selecting and entering basic project information.

[0068] Specifically, according to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, a surface longitudinal section view is created, which also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; according to the Δ value, completing the shoulder longitudinal section creation.

[0069] Specifically, the parameter values ​​set to meet the design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

[0070] Specifically, it also includes: generating a roadbed structure material volume table, a total excavation and filling volume table and a slope surface according to the cross-sectional diagram, and counting the slope area and the drainage ditch length.

[0071] Example 3

[0072] The embodiment of the present invention further provides a storage medium storing a plurality of instructions, wherein the instructions are used to implement the parametric design method for a rail transit roadbed.

[0073] Optionally, in this embodiment, the above storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0074] Optionally, in this embodiment, the storage medium is configured to store program codes for executing the method steps: Step 101, obtaining terrain primitives, selecting contour lines, elevation blocks, elevation points, and generating an original terrain surface with a surface boundary;

[0075] Step 102, obtaining a standardized intersection table, curve table, and broken link table, and drawing a plane route, and creating a surface profile after specifying a profile style, a pile number range, and a profile height according to the original terrain surface and the plane route;

[0076] Step 103, generating a corresponding model according to the curved surface longitudinal section view, setting parameter values ​​that meet the design requirements, and adding corresponding annotations on the corresponding model to generate a corresponding plan view;

[0077] Step 104, according to the corresponding plan view, specify the pile number range and cross-section view style to be drawn, and create a cross-section view.

[0078] Specifically, it also includes: setting up the roadbed template file, selecting and entering basic project information.

[0079] Specifically, according to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, a surface longitudinal section view is created, which also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; according to the Δ value, completing the shoulder longitudinal section creation.

[0080] Specifically, the parameter values ​​set to meet the design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

[0081] Specifically, it also includes: generating a roadbed structure material volume table, a total excavation and filling volume table and a slope surface according to the cross-sectional diagram, and counting the slope area and the drainage ditch length.

[0082] Example 4

[0083] An embodiment of the present invention also proposes an electronic device, including a processor and a storage medium connected to the processor, wherein the storage medium stores a plurality of instructions, and the instructions can be loaded and executed by the processor so that the processor can execute a parametric design method for a rail transit roadbed.

[0084] Specifically, the electronic device of this embodiment may be a computer terminal, and the computer terminal may include: one or more processors, and a storage medium.

[0085] Among them, the storage medium can be used to store software programs and modules, such as a rail transit roadbed parametric design method in an embodiment of the present invention, and the corresponding program instructions / modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the storage medium, that is, realizing the above-mentioned rail transit roadbed parametric design method. The storage medium may include a high-speed random storage medium, and may also include a non-volatile storage medium, such as one or more magnetic storage systems, flash memory, or other non-volatile solid-state storage media. In some instances, the storage medium may further include a storage medium remotely arranged relative to the processor, and these remote storage media may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0086] The processor may call the information and application program stored in the storage medium through the transmission system to execute the method steps: Step 101, obtaining terrain primitives, selecting contour lines, elevation blocks, elevation points, and generating an original terrain surface with a surface boundary;

[0087] Step 102, obtaining a standardized intersection table, curve table, and broken link table, and drawing a plane route, and creating a surface profile after specifying a profile style, a pile number range, and a profile height according to the original terrain surface and the plane route;

[0088] Step 103, generating a corresponding model according to the curved surface longitudinal section view, setting parameter values ​​that meet the design requirements, and adding corresponding annotations on the corresponding model to generate a corresponding plan view;

[0089] Step 104, according to the corresponding plan view, specify the pile number range and cross-section view style to be drawn, and create a cross-section view.

[0090] Specifically, it also includes: setting up the roadbed template file, selecting and entering basic project information.

[0091] Specifically, according to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, a surface longitudinal section view is created, which also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; according to the Δ value, completing the shoulder longitudinal section creation.

[0092] Specifically, the parameter values ​​set to meet the design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

[0093] Specifically, it also includes: generating a roadbed structure material volume table, a total excavation and filling volume table and a slope surface according to the cross-sectional diagram, and counting the slope area and the drainage ditch length.

[0094] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0095] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0096] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the system embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0097] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0098] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0099] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only storage medium (ROM, Read-Only Memory), random access storage medium (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0100] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A parametric design method for rail transit roadbed, characterized in that: include: Get terrain primitives, select contour lines, elevation blocks, elevation points, and generate original terrain surfaces with surface boundaries; Obtaining standardized intersection tables, curve tables, and broken link tables, and drawing a plane route, and creating a surface profile after specifying a profile style, a pile number range, and a profile height according to the original terrain surface and the plane route; Generate a corresponding model according to the curved surface longitudinal section, set parameter values ​​that meet the design requirements, add corresponding annotations on the corresponding model, and generate a corresponding plane view; Calculate the length L from the i-th section of roadbed to the j-th section of roadbed ij , and according to the length L ij Add the length mark of the roadbed to the corresponding model, where the length L of the roadbed is calculated. ij include: Among them, L ij is the length from the i-th section of roadbed to the j-th section of roadbed, s j is the end point of the jth section of roadbed, s i is the starting point of the i-th section of roadbed, H is the terrain height, s′ is the horizontal distance from the i-th section of roadbed to the j-th section of roadbed, α is the first adjustment factor of the slope protection segmentation marking, β is the second adjustment factor of the slope protection segmentation marking, γ is the third adjustment factor of the slope protection segmentation marking, and ω is the fourth adjustment factor of the slope protection segmentation marking; According to the corresponding plan view, specify the pile number range and cross-section view style to be drawn, and create the cross-section view.

2. A parametric design method for rail transit roadbed according to claim 1, characterized in that: Also includes: Set up the roadbed template file, select and enter basic project information.

3. A parametric design method for rail transit roadbed according to claim 1, characterized in that: According to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, creating a surface longitudinal section view also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; completing the shoulder longitudinal section creation according to the Δ value, wherein the Δ value is the shoulder design elevation minus the rail top design elevation.

4. A rail transit roadbed parametric design method as claimed in claim 1, characterized in that: The parameter values ​​described in setting parameter values ​​that meet design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

5. A parametric design method for rail transit roadbed according to claim 1, characterized in that: Also includes: Based on the cross-sectional diagram, a volume table of roadbed structure materials, a total volume table of excavation and filling, and a slope surface are generated, and the slope area and drainage ditch length are counted.

6. A parametric design system for rail transit roadbed, characterized in that: include: Generate original terrain surface module, used to obtain terrain primitives, select contour lines, elevation blocks, elevation points, and generate original terrain surface with surface boundaries; A surface profile creation module is used to obtain a standardized intersection table, a curve table, a broken link table, and draw a plane route. According to the original terrain surface and the plane route, after specifying the profile style, the pile number range, and the profile height, a surface profile is created; A plane diagram generating module is used to generate a corresponding model according to the curved surface longitudinal section diagram, set parameter values ​​that meet the design requirements, and add corresponding annotations on the corresponding model to generate a corresponding plane diagram; Calculate the length L from the i-th section of roadbed to the j-th section of roadbed ij , and according to the length L ij Add the length mark of the roadbed to the corresponding model, where the length L of the roadbed is calculated. ij include: Among them, L ij is the length from the i-th section of roadbed to the j-th section of roadbed, s j is the end point of the j-th section of roadbed, s i is the starting point of the i-th section of roadbed, H is the terrain height, s′ is the horizontal distance from the i-th section of roadbed to the j-th section of roadbed, α is the first adjustment factor of the slope protection segmentation marking, β is the second adjustment factor of the slope protection segmentation marking, γ is the third adjustment factor of the slope protection segmentation marking, and ω is the fourth adjustment factor of the slope protection segmentation marking; The cross-section view creation module is used to create a cross-section view according to the corresponding plan view by specifying the pile number range and cross-section view style to be drawn.

7. A rail transit roadbed parametric design system as claimed in claim 6, characterized in that: Also includes: Set up the roadbed template file, select and enter basic project information.

8. A rail transit roadbed parametric design system as claimed in claim 6, characterized in that: According to the original terrain surface and the plane route, after specifying the longitudinal section view style, pile number range, and longitudinal section view height, creating a surface longitudinal section view also includes: obtaining standardized longitudinal section table data, and selecting the data to be read to complete the route longitudinal section drawing; completing the shoulder longitudinal section creation according to the Δ value, wherein the Δ value is the shoulder design elevation minus the rail top design elevation.

9. A rail transit roadbed parametric design system as claimed in claim 6, characterized in that: The parameter values ​​described in setting parameter values ​​that meet design requirements include: shoulder slope, line spacing, slope rate, and drainage ditch width.

10. A rail transit roadbed parametric design system as claimed in claim 6, characterized in that: Also includes: Based on the cross-sectional diagram, a volume table of roadbed structure materials, a total volume table of excavation and filling, and a slope surface are generated, and the slope area and drainage ditch length are counted.

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