CN114266097A - Three-dimensional information model design method and equipment for railway turnout - Google Patents
Three-dimensional information model design method and equipment for railway turnout Download PDFInfo
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Abstract
The invention provides a three-dimensional information model design method and equipment for railway turnout, wherein the method comprises the following steps: acquiring target turnout track design parameters input by a user, and determining key points of a target turnout according to the track design parameters; selecting a key control section of a target turnout from a pre-established key control section information base as a lofting profile; creating a guide line according to the key point and a drawing instruction input by a user; establishing an informatization model of the turnout steel rail according to the guide line and the lofting profile; acquiring design parameters of an under-rail structure input by a user, and selecting an under-rail structure model of a target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure; and assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout. The rapid assembly of the model is realized through the pre-established multiple databases, and the efficiency and the accuracy of the establishment of the railway turnout model can be improved, so that the railway turnout model can be conveniently applied and popularized.
Description
Technical Field
The application belongs to the technical field of railway engineering, and particularly relates to a three-dimensional informatization model design method and equipment for railway turnouts.
Background
At present, the railway industry already carries out exploration and research work in engineering stages such as design, construction and operation, but the transition from a traditional design mode to an information mode is not realized at present. For the turnout, the deepened application of each stage puts higher requirements on the fineness degree and the informationized integration degree of an informationized component, a standard model library meeting design specifications is established, and the problems of improving the automation level, the additional information level and the fineness degree of the model are urgently needed to be solved.
The turnout is used as a line structure, the structure is complex, the equipment is various, and the traditional two-dimensional expression mode is obviously behind the visual presentation mode of a three-dimensional digital model. At present, the turnout informatization model is lack of a high-speed railway turnout program algorithm design and a matched detailed structure model in the establishment of the turnout informatization model, so that the turnout informatization model cannot be well applied and popularized in the application of high-speed railways.
Disclosure of Invention
In view of this, the invention provides a method and equipment for designing a three-dimensional information model of a railway turnout, and aims to solve the problem that the turnout information model cannot be well applied and popularized in the application of a high-speed railway.
The first aspect of the embodiment of the invention provides a three-dimensional information model design method for a railway turnout, which comprises the following steps: acquiring design parameters of a track of a target turnout input by a user, wherein the design parameters of the track are one or more of the design parameters of the track to be filled in a pre-established basic design parameter information base; the design parameters of the track comprise geometric parameters and non-geometric parameters; the non-geometric parameters include at least one of: track type, track material, track line shape; the design parameters of the track of the target turnout meet preset standard constraints;
determining key points of the target turnout according to the design parameters of the track of the target turnout;
selecting a key control section of the target turnout from a pre-established key control section information base as a lofting profile;
creating a guide line according to the key point of the target turnout and a drawing instruction input by a user; establishing an information model of the turnout steel rail according to the guide line and the lofting profile;
acquiring design parameters of an under-rail structure input by a user, and selecting an under-rail structure model corresponding to the target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure;
and assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout.
A second aspect of the embodiments of the present invention provides a three-dimensional information model design device for a railway switch, including:
the system comprises a parameter acquisition module, a parameter storage module and a parameter processing module, wherein the parameter acquisition module is used for acquiring the design parameters of the track of a target turnout input by a user, and the design parameters of the track are one or more of the design parameters of the track to be filled in a pre-established basic design parameter information base; the design parameters of the track comprise geometric parameters and non-geometric parameters; the non-geometric parameters include at least one of: track type, track material, track line shape; the design parameters of the track of the target turnout meet preset standard constraints;
the key point determining module is used for determining the key points of the target turnout according to the design parameters of the track of the target turnout;
the first selection module is used for selecting the key control section of the target turnout from a pre-established key control section information base as a lofting profile;
the model building module is used for building a guide line according to the key point of the target turnout and a drawing instruction input by a user; establishing an information model of the turnout steel rail according to the guide line and the lofting profile;
the second selection module is used for acquiring design parameters of the under-rail structure input by a user and selecting an under-rail structure model corresponding to the target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure;
and the model assembling module is used for assembling the under-rail structure model and the turnout steel rail informatization model to obtain the three-dimensional informatization model of the target turnout.
A third aspect of the embodiments of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor, when executing the computer program, implements the steps of the three-dimensional information model design method for railway switches according to the first aspect.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the three-dimensional information-based model design method for railroad switches as described above in the first aspect.
The three-dimensional information model design method and equipment for the railway turnout provided by the embodiment of the invention comprise the following steps: acquiring design parameters of a track of a target turnout input by a user, and determining key points of the target turnout according to the design parameters of the track of the target turnout; selecting a key control section of a target turnout from a pre-established key control section information base as a lofting profile; creating a guide line according to key points of the target turnout and a drawing instruction input by a user; establishing an informatization model of the turnout steel rail according to the guide line and the lofting profile; acquiring design parameters of an under-rail structure input by a user, and selecting an under-rail structure model corresponding to a target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure; and assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout. The rapid assembly of the model is realized through the pre-established multiple databases, and the efficiency and the accuracy of the establishment of the railway turnout model can be improved, so that the railway turnout model can be conveniently applied and popularized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is an application environment diagram of a three-dimensional information model design method for railway switches provided by an embodiment of the invention;
FIG. 2 is a flow chart of an implementation of a three-dimensional information model design method for a railway switch according to an embodiment of the present invention;
FIG. 3 is a flow chart of an implementation of the assembly process provided by the embodiments of the present invention;
fig. 4 is a flow chart of the implementation of the assembly of the fastener and the switch tie on the steel rail according to the embodiment of the invention;
FIG. 5 is a schematic diagram of the locations of key points on a target switch provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of a user interface provided by an embodiment of the present invention;
fig. 7 is a schematic diagram of an under-rail structure and a positional relationship between the under-rail structure and a rail according to an embodiment of the present invention;
FIG. 8 is an overall schematic view of a target turnout after assembly and lightweight processing according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a three-dimensional information model design device for railway switches provided by an embodiment of the invention;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The development of railway three-dimensional digitization has become an urgent need for railway informatization construction. The development trend of the new technology is to gradually replace drawing with a database, establish a standard model base in the database according to relevant technical standards, and express geometric information in a digital mode and non-geometric information in a data mode. The establishment of the high-speed railway turnout informatization model is to digitally accumulate the original informatization model for the railway industry.
The BIM (Building Information model) technology is one of the main means for realizing digital informatization in the railway field, and is prominently represented in a three-dimensional representation form and parametric driving capability. At present, the railway industry already carries out exploration and research work in engineering stages such as design, construction and operation, but the transition from a traditional design mode to an information mode is not realized at present. The turnout is used as a line structure, the structure is complex, the equipment is various, and the traditional two-dimensional expression mode is obviously behind the visual presentation mode of a three-dimensional digital model. For the turnout, the deepened application of each stage puts higher requirements on the fineness degree and the informationized integration degree of an informationized component, a standard model library meeting design specifications is established, and the problems of improving the automation level, the additional information level and the fineness degree of the model are urgently needed to be solved. And at present, the high-speed railway turnout program algorithm design and the matched detailed structure model are lacked in the establishment of the turnout informatization model.
Fig. 1 is an application environment diagram of a three-dimensional information model design method for a railway switch according to an embodiment of the present invention. The three-dimensional information model design method for the railway turnout provided by the embodiment of the invention can be applied to the application environment but not limited to the application environment. As shown in fig. 1, the system includes: a railway engineering management platform 11 and an electronic device 12.
The electronic device 12 is used for establishing various databases (a basic design parameter information base, a BIM model base, etc.) according to the design parameters to be filled set by the user and the data of the high-speed railway turnout from the railway engineering management platform 11 and storing the databases into the railway engineering management platform 11.
The electronic device 12 is also used for establishing a three-dimensional information model of the target switch and storing the three-dimensional information model into the railway engineering management platform 11 according to the data of the high-speed railway switch input by the user, the instruction input by the user and the data of the high-speed railway switch from the railway engineering management platform 11.
When querying the relevant information or the three-dimensional information model of the high-speed railway, the user may log in the railway engineering management platform 11 for querying, or may directly query from the electronic device 12, which is not limited herein. The electronic device 12 may include, but is not limited to, a desktop computer, a notebook computer, a tablet computer, and the like.
Fig. 2 is a flowchart of an implementation of a three-dimensional information model design method for a railway switch according to an embodiment of the present invention. As shown in fig. 2, in this embodiment, the method is described by taking the electronic device in fig. 1 as an example, and the method for designing a three-dimensional information model of a railway switch includes:
s201, acquiring design parameters of a track of a target turnout input by a user, wherein the design parameters of the track are one or more of the design parameters of the track to be filled in a pre-established basic design parameter information base; the design parameters of the track comprise geometric parameters and non-geometric parameters; the non-geometric parameters may include, but are not limited to, at least one of: track type, track material, track line shape; the design parameters of the track of the target turnout meet preset standard constraints.
And S202, determining key points of the target turnout according to the design parameters of the track of the target turnout.
And S203, selecting the key control section of the target turnout from a pre-established key control section information base as a lofting profile.
S204, creating a guide line according to the key point of the target turnout and a drawing instruction input by a user; and establishing an information model of the turnout steel rail according to the guide line and the lofting profile.
S205, acquiring design parameters of the under-rail structure input by a user, and selecting an under-rail structure model corresponding to the target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure.
And S206, assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout.
In this embodiment, the target switch may be a single switch, a symmetric switch, a three-switch, a cross-over switch, etc., and is not limited herein.
The design parameters of the track to be filled in the basic design parameter information base can be divided according to the structure of the turnout of the high-speed railway. For example, it can be divided into three basic units, a switch portion, a connecting portion, a movable point frog and a guard rail portion. And the design parameters of the track to be filled in the basic design parameter information base can be set in a mode of naming fields.
For the switch portion, the extractable geometric parameters are as follows: turnout radius (field naming ZZ _ R)0) Radius of curvature of the working edge of the tongue (field designation ZZ _ R), initial turning angle (field designation ZZ _ β)1) Turning angle (field name ZZ _ beta), distance from the theoretical starting point to the tip (field name ZZ _ A)0) The track heel offset (field naming ZZ _ y)g) The width of the point at which the point curve changes to a tangent (field designation ZZ _ b)1) Minimum tongue groove width (field designation ZZ _ t)min) The length of the stock rail in front of the point tip (field designation ZZ _ q). Extractable partial non-geometric parameters: type of track used for the point (field name ZZ _ JianType), type of track used for the stock (field name ZZ _ JiType), point profile (field name ZZ _ LineType), point Material (field name ZZ _ Material), and the like.
For the connecting part, the extractable geometric parameters are as follows: phase separation tangent value (field naming LJ _ f), easement curve length (field designation LJ _ l)h). Extractable partial non-geometric parameters: the connection part line shape (field name LJ _ LineType).
For the movable point frog and guard rail parts, the basic geometric parameters that can be extracted for the movable point frog and guard rail parts are as follows: number of turnout (field name DC _ N), width of frog throat flange (field name ZC _ t)1) Checking interval (field naming ZC _ D)1、ZC_D2) A guard rail flat section (field naming HG _ L1), a guard rail buffer section (field naming HG _ L2), a guard rail open section (field naming HG _ L3), a flat section rim slot width (field naming HG _ H1), a buffer section rim slot width (field naming HG _ H2), and an open section rim slot width (field naming HG _ H3). Extractable non-geometric parameters: frog Type (field naming ZC _ Type), guide rail Type (field naming HG _ Type), guide rail Material (field naming HG _ Material), etc.
In this embodiment, the geometric parameters of the track of the target switch may be changed within a preset constraint range, and are specifically determined according to the speed of a train running on the switch and the terrain where the switch is located, and are not limited herein. For the same type of target turnout, no modeling is needed when the speed of the running train or the terrain is changed, and only the geometric parameters of the target turnout need to be changed and the change of the target turnout within the constraint range is ensured, so that the established model has strong adaptability and is convenient to apply and popularize.
For the above-illustrated geometric parameters of the track, the constraint relationship is specifically shown in the following table:
TABLE 1 orbital geometric parameter constraint relation table
In the embodiment, the key point of the target turnout is determined according to the design parameter of the track of the target turnout by acquiring the design parameter of the track of the target turnout input by a user; selecting a key control section of a target turnout from a pre-established key control section information base as a lofting profile; creating a guide line according to key points of the target turnout and a drawing instruction input by a user; establishing an informatization model of the turnout steel rail according to the guide line and the lofting profile; acquiring design parameters of an under-rail structure input by a user, and selecting an under-rail structure model corresponding to a target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure; and assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout. The rapid assembly of the model is realized through the pre-established multiple databases, and the efficiency and the accuracy of the establishment of the railway turnout model can be improved, so that the railway turnout model can be conveniently applied and popularized.
In some embodiments, the guide line comprises a straight guide line, a round guide line, a gentle curve guide line. S204, may include:
receiving a Line command input by a user, and creating a linear guide Line according to the Line command, wherein the linear guide Line comprises at least one key point;
receiving an Arc command input by a user, creating a circular guide line according to the Arc command, wherein the linear guide line comprises at least one key point;
receiving a curve drawing command input by a user, and calling a Hermite interpolation algorithm to create a relaxation curve guide line according to the curve drawing command, wherein the relaxation curve guide line comprises at least one key point.
In this embodiment, the relaxation curve needs to be fitted to the line shape in the calculation. The Hermite interpolation Hermite curve is a fitting mode which is directly carried out by taking any point on an input relaxation curve as a reference point through a Hermite interpolation algorithm, is superior to a B spline curve in the aspects of generation precision, calculation times and program design and is a straight curve.
In some embodiments, after S206, the method may further include:
and carrying out primitive combination, primitive deletion and primitive surface subtraction on the three-dimensional information model to obtain the light three-dimensional information model.
Because the assembled model has repetitive behaviors in the iterative import times of the model, and the spatial model is easy to generate a large number of triangular surface meshes in the entity display process, which causes a large number of triangular surface patches and data storage capacity, in this embodiment, the lightweight processing needs to be performed on the constructed model. The method comprises the following specific steps:
1. and (6) merging the primitives. The same graphic elements with small individual size of the model are objectified to reduce the problem of repeated model loading in the instantiation process (mainly applied to processing fasteners in the fork area, fasteners with the same type are combined into a fastener family type, and then each instantiated fastener model can be adjusted by setting instance parameters).
2. And deleting the primitive. A large number of refined parts which do not need to be embodied in the current engineering application in a complex turnout structure are deleted, such as screws, nuts and the like on a turnout zone fastener model. These models are only used for display and quantitative statistics of the assembly, and the quantitative information can be added to the unified standardized model of the fastener, so that this type of model can be deleted.
3. And (5) subtracting the surface from the primitive. On the aspect of the whole turnout model volume analysis, the model size of the turnout zone fastener II type W elastic strip is a key factor for determining the model volume, and the generation reason is that a large number of triangular surfaces are generated on a space curve and a circular section, so that the primitive face reduction technology is utilized, the main idea is to cut the space lofting curve of the W elastic strip in a way of direct bending instead of curved bending by the limit idea, and meanwhile, the number of the space triangular surfaces is reduced as much as possible in a way of replacing the circular curved shape with a polygon on the lofting section.
In the embodiment, the overall model size can be reduced to 50-100MB through three processing modes, a large amount of memory is released, and the occupancy rate of a CPU is reduced. The method is suitable for various BIM platforms and can cooperate with various specialties.
In some embodiments, S204 may include:
establishing an initial turnout steel rail model according to the guide line and the lofting profile;
acquiring the auxiliary information of a target turnout; the auxiliary information may include, but is not limited to, at least one of research information, design information, construction information, and operation and maintenance information;
and combining the auxiliary information of the target turnout with the initial turnout steel rail model to obtain an information turnout steel rail model.
In this embodiment, the auxiliary information of the target switch may be acquired from a pre-established auxiliary information base. The auxiliary information is the information of the target turnout in the grinding stage, the design stage, the construction stage and the operation and maintenance stage. For example: material price information, geographic location information, purchase date information, construction information, and the like.
In this embodiment, an interface may be provided on the turnout rail information model, and the "attribute bar" may be provided to display the auxiliary information while selecting the model.
In some embodiments, the types of tracks for the target switch include stock rails, switch rails, point rails, long wing rails; before S204, the method may further include:
judging the type of the track corresponding to the guide line;
when the type of the track is a stock track, judging whether the end point of the guide line is behind the intersection position of the gauge lines, and if the end point of the guide line is behind the intersection position of the gauge lines, cutting off the guide line at the intersection position of the gauge lines;
and when the type of the track is a switch rail or a point rail, calculating the distance from the key control section on the track to the starting point of the track so as to perform multi-section lofting.
In some embodiments, the under-rail structure of the target switch includes a switch portion, a connecting portion, a movable point frog, and a guard rail portion; the method may further comprise:
acquiring design parameters to be filled of each part of a target turnout set by a user;
and establishing a basic design parameter information base according to the design parameters to be filled of each part of the target turnout.
In some embodiments, the method further comprises: acquiring track profiles of various tracks in a target turnout;
and establishing a key control section information base of the target turnout according to the track profiles of various tracks.
In some embodiments, the method further comprises: and acquiring the under-rail structure of the target turnout, and establishing models of various under-rail structures according to a preset design size to establish a corresponding BIM library. The under-orbit structural model may include, but is not limited to, at least one of: the turnout sleeper model, the turnout plate model, the turnout zone fastener model, the turnout zone force transmission structure model and the conversion equipment model.
In this embodiment, the specific steps for creating the corresponding BIM library are as follows:
(1) creating a long pillow embedded structure, and determining a fixed size and a parameterized size according to engineering practice, wherein data comprises: and automatically generating a corresponding switch tie combination according to data by using the switch tie design size, the switch tie length, the switch tie layout space, the steel bar layout type, the radius, the length, the switch tie material, the concrete grade, the protective layer thickness and other information.
(2) And (3) establishing a turnout plate structure, and determining the length and width of each plate, the thickness of the turnout plate, the concrete grade, and the diameters and types of transverse steel bars and longitudinal steel bars according to the actual engineering.
(3) And creating a turnout zone fastener structure, and forming according to the structure of the fastener. Respectively creating a base plate, a buckling part, a rubber base plate or a plastic base plate, an elastic strip, a gauge block, a plastic sleeve and the like, and matching equipment such as: bolts, nuts, washers, threaded spikes and the like are used for creating different types of iron base plates and different types of slide plate (roller type slide plate and common slide plate) according to different types of fasteners at different positions of a turnout area, and the method is carried out according to the designed size requirement.
(4) And (3) creating a force transmission structure of the turnout area, wherein the force transmission structure comprises three types of fixing of spacing iron, a limiting stopper and a fastener, and the fastener is designed in step (3), so that the spacing iron and the limiting stopper are additionally designed in step (4). The stopper adopts the letter fast structure, establishes according to the design size, and the interval storage between the primary and secondary piece is driving parameter, can carry out real-time adjustment by actual project demand. The spacing iron is connected with the stock rail and the switch rail through high-strength bolts and is designed according to the size requirement.
(5) And creating conversion equipment, wherein the conversion equipment comprises a switch machine, a locking device, a close-fit checker and the like, and the conversion machine is only designed according to the size requirement and can identify which type of switch machine is required. The high-speed railway turnout locking device adopts an external locking device, the external locking device consists of a hook lock, a hook lock rod, a hook lock frame, a locking iron and a connecting fastener, and the external locking device is respectively designed according to the sizes of components.
(6) And storing the model created in the process into a BIM library.
In some embodiments, the determined keypoints may be stored to a keypoint information repository. When using the keypoints, the keypoints stored in the keypoint information base can be called in the BIM software through an API.
Fig. 3 is a flowchart of an implementation of the assembly process provided in the embodiment of the present invention. As shown in fig. 3, in some embodiments, the under-orbit structure model may include, but is not limited to, at least one of: the turnout tie model comprises a turnout tie model, a turnout plate model, a turnout zone fastener model, a turnout zone force transmission structure model and a conversion equipment model;
s206, may include:
s301, determining the coordinates of the corresponding preset position and the type of the under-rail structure model according to the design parameters of the under-rail structure of the target turnout for each under-rail structure model;
s302, assembling the under-rail structure model to a turnout steel rail informatization model according to an assembling mode and a preset position corresponding to the type of the under-rail structure model;
and S303, sequentially assembling all the under-rail structure models to obtain the three-dimensional information model of the target turnout.
In this embodiment, fig. 4 is a flowchart illustrating an implementation of assembling a fastener and a switch tie on a steel rail according to an embodiment of the present invention, as shown in fig. 4, taking the assembling of the switch tie and the fastener as an example:
s401, reading information of the high-speed railway turnout, including the length of the turnout tie, the distance between the turnout ties, the type of a fastener and the like.
And S402, sequentially calculating the relative position of each turnout sleeper in a program cyclic reading mode.
And S403, selecting the steel rail and the turnout sleeper and judging whether the steel rail and the turnout sleeper are matched, if not, re-selecting, and if so, continuing to execute the next step.
And S404, automatically placing the turnout sleeper model selected from the BIM library into three-dimensional space positioning through a program. Wherein the turnout tie position information includes its X, Y, Z coordinates in space.
S405, inquiring a fastener required for assembling each switch tie and the steel rail, and selecting a fastener model with a corresponding size from the BIM library.
And S406, determining X, Y, Z coordinates, translation length and rotation angle of the fastener according to the selected fastener position information of the fastener model, the calculated switch tie position information and the position information of the steel rail.
S407, assembling is completed according to X, Y, Z coordinates, translation length and rotation angle of the fastener.
In the embodiment, the UI interaction mode is designed through the API in the plug-in of the modeling system, the mouse position can be used for capturing the space point location or clicking the model needing to be attached to acquire the attachment position, and the acquired information is directly attached to the model needing to be placed through a program, so that the assembly is realized, and the integral establishment of the high-speed railway turnout informatization model is completed.
In some embodiments, according to S202, may include:
acquiring a control point of the geometric shape and position of a target turnout plane;
selecting one control point from the control points as a reference point;
and establishing a coordinate system by taking the reference point as an origin, and calculating the coordinates of each control point to obtain the key point of the target turnout.
In this embodiment, the provided Math functions can be used in the C # programming to calculate the control points for controlling the geometric configuration of the switch points, the Math function combination calculation formula is used in the programming, and the XYZ () functions are used in the API to create the points.
The above-described method for designing a three-dimensional information-based model for a railroad switch will be described below with reference to an exemplary embodiment, but the method is not limited thereto. A three-dimensional informatization model is established by taking No. 18 turnouts of a passenger special line of a high-speed railway in China as target turnouts, and the method comprises the following specific steps:
fig. 5 is a schematic diagram of the locations of key points on a target switch provided by an embodiment of the present invention.
Step 1, database establishment process.
And according to the database establishing process described in the corresponding embodiment, establishing a basic design parameter information base, a key control section information base, an auxiliary information base and a BIM model base of the No. 18 turnout.
The key control section information base of No. 18 turnout stores a high-speed railway 60kg/m profile, a 60D 40-point rail 0mm profile, a 60D 40-point rail 5mm profile, a 60D 40-point rail 20mm profile, a 60D 40-point rail 40mm profile, a 60D 40-point rail 50mm profile, a 60D40 rail profile, a long point rail tip profile, a long point rail top width 20mm profile, a long point rail top width 40mm profile, a long point rail top width 50mm profile, a short point rail tip profile, a short point rail top width 20mm profile, a short point rail 40mm profile, a short point rail 50mm profile, a 60TY1 winged rail profile, a 33kg/m groove type guard rail profile and the like.
And 2, acquiring the design parameters of the track of the 18 th turnout input by the user.
And step 3, determining key points of the No. 18 turnout according to the design parameters of the track of the No. 18 turnout. Fig. 5 is a schematic diagram of the locations of key points on a target switch provided by an embodiment of the present invention. As shown in fig. 5, 22 basic control points can be divided as key points according to the plane geometry of switch 18.
Step 4, with P1And establishing a three-dimensional coordinate system for the origin. The coordinates of each key point can be obtained according to the geometric position and the design parameter constraint condition of the track of No. 18 turnout as follows:
P2point coordinates are as follows: p2x＝P1x+LQ，P2y＝P1y，P2z＝P1z。
P3Point coordinates are as follows: p3x＝P4x-b0/tanβ0，P3y＝P1y，P3z＝P1z。
P4Point coordinates are as follows: p4x＝P1x+R*sinβ0，P4y＝P1y-b0，P4z＝P1z。
P5Point coordinates are as follows: p5x＝P4x+R*(sinβ-sinβ0)，P5y＝P1y-Yg，P5z＝P1z。
P6Point coordinates are as follows: p6x＝P5x+R*(sinα-sinβ)，P6y＝P5y-R*(cosβ-cosα)，P6z＝P1z。
P7、P8、P9The point is a control point position of the long wing rail, and is independently established according to the structural design of the long wing rail, so that the calculation in the global point position is not needed, and P is calculated7As a localization point, the created model can be directly localized at this point location.
P10Point coordinates are as follows: p10x＝P3x，P10y＝P4y-S+tmin，P10z＝P1z。
P11Point coordinates are as follows: p11x＝P4x，P11y＝P4y-S+b0，P11z＝P1z。
P12Point coordinates are as follows: p12x＝P6x，P12y＝P4y-S，P12z＝P1z。
P13Point coordinates are as follows: p13x＝P7x，P13y＝P1y-S，P13z＝P1z。
P16、P17The point coordinates are control points of the lateral long wing rail, and the forward long wing rail can be directly turned over in a mirror image mode through a mirror image method, so that calculation is not carried out. The axis of symmetry of the mirror image is the angular bisector of the frog angle.
The control points of the guard rail and the center rail are calculated separately, and the control points are not listed in the present embodiment example.
P18Point coordinates are as follows: p18x＝P1x，P18y＝P1y-S，P18z＝P1z。
P19Point coordinates are as follows: p19x＝P4x，P19y＝P4y-S，P19z＝P1z。
P20Point coordinates are as follows: p20x＝P6x，P20y＝P19y-R*(cosβ-cosα)，P20z＝P1z。
P21Point coordinates are as follows: p21x＝P2x，P21y＝P20y-|P2y-P20x|*tanα，P21z＝P1z。
And step 5, drawing a straight Line guide Line, a circle guide Line and a relaxation curve guide Line according to a Line command and an Arc command or calling a Hermite interpolation algorithm.
Step 6, selecting the key control section of No. 18 turnout from the key control section information base of No. 18 turnout as a lofting profile;
and 7, lofting to generate stock rails, switch rails, point rails and long wing rails of No. 18 turnouts, and obtaining an initial turnout steel rail model.
And 8, calling related auxiliary information from the auxiliary information base, and combining the auxiliary information with the turnout steel rail initial model to obtain the turnout steel rail informatization model.
And 9, acquiring design parameters of the under-rail structure input by a user to select an under-rail structure model corresponding to No. 18 turnout from the BIM model library.
And step 10, automatically assembling. Reference may be made in particular to the embodiments shown in fig. 3 and 4.
Fig. 6 is a schematic diagram of a user operation interface provided by an embodiment of the present invention. As shown in fig. 6, from the menu of the user operation interface, there are switch overall, switch rail member, under-rail structure, and quick assembling, and the user can select in turn to perform the operations in any of the above embodiments.
Fig. 7 is a schematic diagram of an under-rail structure and a positional relationship between the under-rail structure and a rail according to an embodiment of the present invention. As shown in fig. 7, the upper half is a number of separate under-track structures, and the lower half is the positional relationship between the under-track structures and the tracks. Fig. 7 is only some illustrations of the under-rail structure and the positional relationship of the under-rail structure and the rail, and is not limiting.
Fig. 8 is an overall schematic diagram of the target turnout after assembly and lightweight processing according to the embodiment of the present invention. As shown in fig. 8, the tracks above the graph are tracks obtained after splicing, and the tracks below the graph are tracks after weight reduction, so that after weight reduction, redundant parts of the images are removed, the space required by storage is reduced, and the images are clearer and more orderly compared with the images before processing, and the images meet the actual track condition.
The embodiment of the invention has the following effects:
1. according to a minimum unit refining method of the turnout of the high-speed railway, design parameters and corresponding rule constraints of all parts of a turnout sleeper, a fastener, a force transmission structure, conversion equipment and a point switch are extracted and synchronously stored in a database, variable parameters and a constraint database of the turnout of the high-speed railway are established, and the design method of integrating multi-parameter design and normative constraints is realized.
2. And a BIM API secondary development method is directly adopted, a variable parameterization and constraint synchronous database is read, a parameter set is formed by utilizing mutual constraint among all unit parameters, and a diversified turnout sleeper model library, a fastener model library, a force transmission structure model library, a conversion equipment model library and a switch machine model library meeting the standard constraint are quickly established, so that an entity model is generated. The model can be quickly established by a small amount of parameter drive, and the efficiency and the accuracy of establishing the building information model of the rail transit station are greatly improved.
3. The rapid assembling program algorithm for other structures such as the switch tie, the fastener, the force transmission structure and the like is designed, the integral automatic assembling of the turnout of the one-key high-speed railway is realized, the assembling efficiency and precision are greatly improved, and the complicated manual assembling process of modeling personnel is avoided.
4. A general design and modeling module for high-speed railway turnout design is developed, the general design and modeling module can be integrated on each BIM platform to generate a program plug-in, and the design method can provide reference and reference for BIM design and rapid modeling of different types of high-speed railway turnouts.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 9 is a schematic structural diagram of a three-dimensional information model design device for railway switches according to an embodiment of the present invention. As shown in fig. 9, the three-dimensional information model designing apparatus 9 for railroad switches includes:
a parameter obtaining module 910, configured to obtain a design parameter of a track of a target turnout input by a user, where the design parameter of the track is one or more design parameters of a track to be filled in a pre-established basic design parameter information base; the design parameters of the track comprise geometric parameters and non-geometric parameters; the non-geometric parameters include at least one of: track type, track material, track line shape; the design parameters of the track of the target turnout meet preset standard constraints;
the key point determining module 920 is configured to determine a key point of the target turnout according to the design parameter of the track of the target turnout;
a first selecting module 930, configured to select a key control section of a target turnout from a pre-established key control section information base as a lofting profile;
the model building module 940 is used for creating a guide line according to the key point of the target turnout and the drawing instruction input by the user; establishing an informatization model of the turnout steel rail according to the guide line and the lofting profile;
a second selecting module 950, configured to obtain design parameters of the under-rail structure input by a user, and select an under-rail structure model corresponding to the target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure;
and the model assembling module 960 is used for assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout.
Optionally, the guide line includes a straight guide line, a round guide line, a gentle curve guide line.
The model establishing module 940 is configured to receive a Line command input by a user, and establish a linear guide Line according to the Line command, where the linear guide Line includes at least one key point;
receiving an Arc command input by a user, creating a circular guide line according to the Arc command, wherein the linear guide line comprises at least one key point;
receiving a curve drawing command input by a user, and calling a Hermite interpolation algorithm to create a relaxation curve guide line according to the curve drawing command, wherein the relaxation curve guide line comprises at least one key point.
Optionally, the model assembling module 960 is configured to perform primitive merging, primitive deletion, and primitive surface subtraction on the three-dimensional information model to obtain a light-weighted three-dimensional information model.
Optionally, the model building module 940 is configured to build an initial model of the turnout steel rail according to the guide line and the lofting profile;
acquiring the auxiliary information of a target turnout; the auxiliary information may include, but is not limited to, at least one of research information, design information, construction information, and operation and maintenance information;
and combining the auxiliary information of the target turnout with the initial turnout steel rail model to obtain an information turnout steel rail model.
Optionally, the types of tracks of the target switch include stock rail, point rail, and long wing rail.
A model building module 940, which is specifically configured to determine the type of the track corresponding to the guide line;
when the type of the track is a stock track, judging whether the end point of the guide line is behind the intersection position of the gauge lines, and if the end point of the guide line is behind the intersection position of the gauge lines, cutting off the guide line at the intersection position of the gauge lines;
and when the type of the track is a switch rail or a point rail, calculating the distance from the key control section on the track to the starting point of the track so as to perform multi-section lofting.
Optionally, the under-rail structure of the target switch includes a switch portion, a connecting portion, a movable point frog, and a guard rail portion. The three-dimensional information-based model design device 9 for railway switches further includes: database setup module 970.
The database establishing module 970 is used for acquiring design parameters to be filled of each part of the target turnout set by a user;
establishing a basic design parameter information base according to design parameters to be filled of each part of a target turnout;
the method further comprises the following steps: acquiring track profiles of various tracks in a target turnout;
establishing a key control section information base of the target turnout according to the track profiles of various tracks;
the method further comprises the following steps: and acquiring the under-rail structure of the target turnout, and establishing models of various under-rail structures according to a preset design size to establish a corresponding BIM library.
Optionally, the under-orbit structural model may include, but is not limited to, at least one of: the turnout sleeper model, the turnout plate model, the turnout zone fastener model, the turnout zone force transmission structure model and the conversion equipment model.
A model assembling module 960, configured to determine, for each under-rail structure model, coordinates of the corresponding preset position and a type of the under-rail structure model according to design parameters of an under-rail structure of a target turnout; assembling the under-rail structure model to the turnout steel rail informatization model according to the assembling mode and the preset position corresponding to the type of the under-rail structure model;
and after all the under-rail structure models are assembled in sequence, obtaining the three-dimensional information model of the target turnout.
Optionally, the key point determining module 920 is configured to obtain a control point of the geometric shape and position of the target turnout plane;
selecting one control point from the control points as a reference point;
and establishing a coordinate system by taking the reference point as an origin, and calculating the coordinates of each control point to obtain the key point of the target turnout.
The three-dimensional information model design device for the railway turnout provided by the embodiment can be used for executing the method embodiment, the implementation principle and the technical effect are similar, and the details are not repeated here.
Fig. 10 is a schematic diagram of an electronic device provided in an embodiment of the present invention. As shown in fig. 10, an embodiment of the present invention provides an electronic device 10, where the electronic device 10 of the embodiment includes: a processor 1000, a memory 1001, and a computer program 1002 stored in the memory 1001 and executable on the processor 1000. The processor 1000, when executing the computer program 1002, implements the steps of the above-described embodiments of the three-dimensional information-based model design method for railroad switches, such as the steps 201 to 206 shown in fig. 2. Alternatively, the processor 1000, when executing the computer program 1002, implements the functions of the modules/units in the above-described device embodiments, such as the functions of the modules 910 to 960 shown in fig. 9.
Illustratively, the computer program 1002 may be partitioned into one or more modules/units, which are stored in the memory 1001 and executed by the processor 1000 to implement the present invention. One or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of computer program 1002 in electronic device 10.
The electronic device 10 may be a mobile phone, a notebook computer, a desktop computer, or other computing device with a display screen. Those skilled in the art will appreciate that fig. 10 is merely an example of the electronic device 10 and does not constitute a limitation of the electronic device 10 and may include more or fewer components than shown, or some components may be combined, or different components.
The Processor 1000 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 1001 may be an internal storage unit of the electronic device 10, such as a hard disk or a memory of the electronic device 10. The memory 1001 may also be an external storage device of the electronic device 10, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the electronic device 10. Further, the memory 1001 may also include both internal storage units and external storage devices of the electronic device 10. The memory 1001 is used to store computer programs and other programs and data required by the terminal. The memory 1001 may also be used to temporarily store data that has been output or is to be output.
The embodiment of the invention provides a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and when the computer program is executed by a processor, the steps in the embodiment of the three-dimensional information model design method for railway turnouts are realized.
The computer-readable storage medium stores a computer program 1002, the computer program 1002 includes program instructions, and when the program instructions are executed by the processor 1000, all or part of the processes in the method according to the above embodiments may be implemented by the computer program 1002 instructing related hardware, and the computer program 1002 may be stored in a computer-readable storage medium, and when the computer program 1002 is executed by the processor 1000, the steps of the above embodiments of the method may be implemented. The computer program 1002 comprises, among other things, computer program code, which may be in the form of source code, object code, an executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may include any suitable increase or decrease as required by legislation and patent practice in the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The computer readable storage medium may be an internal storage unit of the terminal of any of the foregoing embodiments, for example, a hard disk or a memory of the terminal. The computer readable storage medium may also be an external storage device of the terminal, such as a plug-in hard disk provided on the terminal, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is used for storing a computer program and other programs and data required by the terminal. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, a module or a unit may be divided into only one logical function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may include any suitable increase or decrease as required by legislation and patent practice in the jurisdiction, for example, in some jurisdictions, computer readable media may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A three-dimensional information model design method for railway turnout is characterized by comprising the following steps:
acquiring design parameters of a track of a target turnout input by a user, wherein the design parameters of the track are one or more of the design parameters of the track to be filled in a pre-established basic design parameter information base; the design parameters of the track comprise geometric parameters and non-geometric parameters; the non-geometric parameters include at least one of: track type, track material, track line shape; the design parameters of the track of the target turnout meet preset standard constraints;
determining key points of the target turnout according to the design parameters of the track of the target turnout;
selecting a key control section of the target turnout from a pre-established key control section information base as a lofting profile;
creating a guide line according to the key point of the target turnout and a drawing instruction input by a user; establishing an information model of the turnout steel rail according to the guide line and the lofting profile;
acquiring design parameters of an under-rail structure input by a user, and selecting an under-rail structure model corresponding to the target turnout from a pre-established BIM model library according to the design parameters of the under-rail structure;
and assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout.
2. The three-dimensional information-based model design method for railway turnout according to claim 1, wherein the guide line comprises a straight guide line, a round guide line, a gentle curve guide line; creating a guide line according to the key point of the target turnout and a drawing instruction input by a user, wherein the method comprises the following steps:
receiving a Line command input by a user, and creating the linear guide Line according to the Line command, wherein the linear guide Line comprises at least one key point;
receiving an Arc command input by a user, and creating the circular guide line according to the Arc command, wherein the linear guide line comprises at least one key point;
and receiving a curve drawing command input by a user, and calling a Hermite interpolation algorithm to create the easement curve guide line according to the curve drawing command, wherein the easement curve guide line comprises at least one key point.
3. The method of designing a three-dimensional information-based model for a railway switch according to claim 1, wherein after obtaining the three-dimensional information-based model of the target switch, the method further comprises:
and carrying out primitive combination, primitive deletion and primitive surface subtraction on the three-dimensional information model to obtain the light three-dimensional information model.
4. The method for designing the three-dimensional information model of the railway turnout according to claim 1, wherein the establishing of the turnout steel rail information model according to the guide line and the lofting profile comprises the following steps:
establishing an initial model of the turnout steel rail according to the guide line and the lofting profile;
acquiring the auxiliary information of the target turnout; the auxiliary information comprises at least one of research information, design information, construction information and operation and maintenance information;
and combining the auxiliary information of the target turnout with the initial turnout steel rail model to obtain an information model of the turnout steel rail.
5. The method for designing a three-dimensional informatization model for railway turnout according to claim 4, characterized in that the type of the track of the target turnout comprises stock rail, switch rail, point rail and long wing rail; before establishing an initial model of the turnout steel rail according to the guide line and the lofting profile, the method further comprises the following steps:
judging the type of the track corresponding to the guide line;
when the type of the track is a stock track, judging whether the end point of the guide line is behind the intersection position of the gauge lines, and if the end point of the guide line is behind the intersection position of the gauge lines, cutting off the guide line at the intersection position of the gauge lines;
and when the type of the track is a switch rail or a point rail, calculating the distance from the key control section on the track to the starting point of the track so as to perform multi-section lofting.
6. The method of designing a three-dimensional information-based model for a railroad switch according to claim 1, wherein the target switch includes a switch portion, a connecting portion, a movable point frog, and a guard rail portion; the method further comprises the following steps:
acquiring design parameters to be filled of each part of a target turnout set by a user;
establishing a basic design parameter information base according to design parameters to be filled of each part of a target turnout;
the method further comprises the following steps: acquiring track profiles of various tracks in a target turnout;
establishing a key control section information base of the target turnout according to the track profiles of various tracks;
the method further comprises the following steps: and acquiring the under-rail structure of the target turnout, and establishing models of various under-rail structures according to a preset design size to establish a corresponding BIM library.
7. The method of designing a three-dimensional information-based model for a railway switch according to claim 1, wherein the under-rail structure model includes at least one of: the turnout tie model comprises a turnout tie model, a turnout plate model, a turnout zone fastener model, a turnout zone force transmission structure model and a conversion equipment model;
assembling the under-rail structure model and the turnout steel rail informatization model to obtain a three-dimensional informatization model of the target turnout, and the method comprises the following steps:
determining the coordinates of the corresponding preset position and the type of the under-rail structure model according to the design parameters of the under-rail structure of the target turnout for each under-rail structure model; assembling the under-rail structure model to the turnout steel rail informatization model according to the assembling mode and the preset position corresponding to the type of the under-rail structure model;
and sequentially assembling all the under-rail structure models to obtain the three-dimensional information model of the target turnout.
8. The method for designing a three-dimensional information-based model for a railway switch according to any one of claims 1 to 7, wherein determining the key points of the target switch based on the design parameters of the track of the target switch comprises:
acquiring a control point of the geometric shape and position of the target turnout plane;
selecting one control point from the control points as a reference point;
and establishing a coordinate system by taking the reference point as an origin, and calculating the coordinates of each control point to obtain the key point of the target turnout.
9. An electronic device comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor when executing the computer program implements the steps of the method for designing a three-dimensional information-based model for railroad switch as claimed in any one of claims 1 to 8.
10. A computer-readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the method for designing a three-dimensional information-based model for a railroad switch according to any one of claims 1 to 8.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115081098A (en) * | 2022-08-22 | 2022-09-20 | 中南大学 | Modeling method for single turnout of each number of parameterized railway |
| CN115758751A (en) * | 2022-11-22 | 2023-03-07 | 中铁工程设计咨询集团有限公司 | Seamless track design method, device, equipment and readable storage medium |
| CN117576293A (en) * | 2024-01-15 | 2024-02-20 | 中南大学 | Visual correlation multithreading dynamic updating method based on line paging layering model |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115081098A (en) * | 2022-08-22 | 2022-09-20 | 中南大学 | Modeling method for single turnout of each number of parameterized railway |
| CN115081098B (en) * | 2022-08-22 | 2022-11-15 | 中南大学 | Modeling method for single turnout of each number of parameterized railway |
| CN115758751A (en) * | 2022-11-22 | 2023-03-07 | 中铁工程设计咨询集团有限公司 | Seamless track design method, device, equipment and readable storage medium |
| CN115758751B (en) * | 2022-11-22 | 2023-09-26 | 中铁工程设计咨询集团有限公司 | Seamless line design method, device, equipment and readable storage medium |
| CN117576293A (en) * | 2024-01-15 | 2024-02-20 | 中南大学 | Visual correlation multithreading dynamic updating method based on line paging layering model |
| CN117576293B (en) * | 2024-01-15 | 2024-04-09 | 中南大学 | Visual correlation multithreading dynamic updating method based on line paging layering model |
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