Linear transportation engineering BIM and GIS thematic map production system and method

Abstract

The invention discloses a linear traffic engineering BIM and GIS thematic map making system, wherein the GIS element generation module is used to upload the geographic element layer in the two-dimensional GIS base map and the three-dimensional BIM model of the engineering component to the three-dimensional scene of the GIS platform according to the rules of spatial linking, to form a three-dimensional GIS map scene, to obtain the mapping relationship between the three-dimensional BIM model and the GIS geographic element, and to publish an online map service; the cross-platform interaction module is used to call the online map service and the three-dimensional GIS map scene, to construct the spatial link between the BIM model and the geographic element in the three-dimensional GIS map scene through the location code and WBS code of the linear traffic engineering BIM component, to establish a database and to develop a query function; the construction operation surface state management module is used to form a dynamic process of the construction operation surface state change. The invention can improve the management efficiency of linear traffic engineering.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic engineering management, and in particular to a linear traffic engineering BIM and GIS thematic map making system and method. Background Art

[0002] Linear transportation projects represented by rail transit and highways are important national infrastructure and transportation arteries, which can effectively shorten the time and space distance of personnel and logistics, improve lifestyles, and promote social progress and economic development. In recent years, with the increase in social needs and the upgrading of construction technology, long and large linear transportation projects across regions and cities have continued to emerge, increasing the difficulty of engineering data management. In long and large linear transportation projects, there are generally many file and data types, complex versions, and difficulties in comprehensive management and integrated application of BIM (Building Information Model) models and GIS (Geographic Information System) data.

[0003] At present, the main solution to the problem of difficult model data management in long linear transportation projects is to build linear transportation project WBS decomposition and BIM model unit division rules based on the actual situation of the project, formulate linear transportation project WBS codes and BIM model codes, and obtain model and data content according to code queries in different construction stages of the project. However, according to the complex WBS code query database, the location of the corresponding component in the project, model version, construction progress and other attributes, even the front-line personnel of the project need to go through a series of complex query operations to complete, and it is even more difficult for non-front-line personnel who do not fully understand the project to complete it independently. The engineering data management mode of the BIM model that relies solely on WBS coding is too cumbersome.

[0004] On the other hand, the existing BIM and GIS data solutions on the market generally adopt the ETL integration mode, which extracts BIM model data into GIS data and then loads it into the GIS platform for use. This is usually accompanied by the loss of attribute and material data, and it is difficult to maintain two-way relationships. It is difficult to give full play to the spatiotemporal attribute value of GIS data. Summary of the invention

[0005] The purpose of the present invention is to provide a linear transportation engineering BIM and GIS thematic map production system. The present invention can realize two-way cross-platform interaction between BIM model and GIS data, give full play to the spatiotemporal attributes of GIS data, make full use of GIS technology to display the construction site environment and external interfaces in a macroscopic way, and combine BIM technology to analyze in detail the construction organization details such as working space, construction progress, interspersed processes, etc., so as to improve the management efficiency of linear transportation engineering.

[0006] To achieve this purpose, the linear transportation engineering BIM and GIS thematic map making system designed by the present invention includes a GIS element generation module, a cross-platform interaction module and a construction work surface status management module;

[0007] The GIS element generation module is used to upload the geographic element layer in the two-dimensional GIS base map and the three-dimensional BIM model of the engineering component to the three-dimensional scene of the GIS platform according to the rules of spatial linking, to form a three-dimensional GIS map scene, to obtain the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, and to publish an online map service;

[0008] The cross-platform interaction module is used to call the online map service and the three-dimensional GIS map scene, build a spatial link between the BIM model and the geographical elements in the three-dimensional GIS map scene through the location code and WBS code of the linear transportation engineering BIM component, establish a database and develop a query function;

[0009] The construction surface status management module is used to divide the linear transportation project into several adjacent working surfaces based on the three-dimensional GIS map scene and the spatial links between the BIM model and the geographic elements in the three-dimensional GIS map scene; according to the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, the project progress on the working surface is mapped to the working surface status attributes, and a timeline tool for the entire construction process is established. The construction surface status is mapped and integrated, and key frames are extracted at each milestone time node to form a dynamic process of construction surface status changes.

[0010] Beneficial effects of the present invention:

[0011] The present invention is based on the GIS platform, and adopts technical means such as multi-source data spatial registration, multi-source data fusion, map mapping synthesis, online creation of geographic services, and development of Web interactive tools to build a Web platform that can realize two-way interaction between BIM and GIS. First, a three-dimensional spatial scene is generated through a two-dimensional / three-dimensional GIS element generation module, and the association relationship between GIS data and BIM models is established; then, the integration and interaction of the BIM platform and the GIS platform are realized through the BIM+GIS model cross-platform interactive operation module; finally, the operation, time and location map of the project is formed through the construction operation surface status management module, and the project is provided with a project-specific map containing spatiotemporal attributes, engineering attributes, and easy-to-use, which assists in the management of various files with spatial attributes, can transfer design and construction problems between BIM and GIS platforms, support the drawing and release of operation, time and location maps, and assist in the management of construction operation surfaces. The present invention has strong practicality and high degree of freedom, provides convenience for engineering management of professionals, and also lowers the threshold for engineering management of non-professionals, provides a new BIM model management and viewing means, and promotes the digitalization and intelligence of linear transportation engineering management. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2a The original CAD drawing of the present invention;

[0014] Figure 2b The present invention disassembles CAD engineering drawings according to professional categories to obtain a two-dimensional vector GIS data schematic diagram of a transportation station;

[0015] Figure 2c The present invention disassembles the CAD engineering drawings according to professional categories to obtain a two-dimensional vector GIS data schematic diagram of the viaduct;

[0016] Figure 2d A schematic diagram of two-dimensional vector GIS data of earth elevation obtained by disassembling CAD engineering drawings according to professional categories in the present invention;

[0017] Figure 2e The present invention disassembles CAD engineering drawings according to professional categories to obtain a two-dimensional vector GIS data schematic diagram of the construction work surface;

[0018] Figure 2f The present invention disassembles CAD engineering drawings according to professional categories to obtain a two-dimensional vector GIS data schematic diagram of an existing building;

[0019] Figure 2g The present invention disassembles CAD engineering drawings according to professional categories to obtain a two-dimensional vector GIS data schematic diagram of all GIS elements;

[0020] Figure 3a A schematic diagram of a BIM model suspended in the air before geo-referencing of the present invention;

[0021] Figure 3b A schematic diagram of the BIM model embedded on the ground surface after geo-registration in the present invention;

[0022] Figure 4a It is a schematic diagram of the overall BIM+GIS thematic map base map of the linear transportation project described in the present invention;

[0023] Figure 4b It is a schematic diagram of a local BIM+GIS thematic map base map of the linear transportation project described in the present invention;

[0024] Figure 5 It is a schematic diagram of the spatial link between the BIM engineering components and the GIS geographic elements of the present invention;

[0025] Figure 6A schematic diagram of a query function for basic engineering information such as the name, professional category, delivery status, model version, etc. of the BIM component developed according to the present invention;

[0026] Figure 7 This is a schematic diagram of a small window jump component developed across GIS and BIM platforms according to the present invention;

[0027] Figure 8 A schematic diagram of a component for developing a functional linear construction plan in a linear transportation engineering BIM and GIS scenario according to the present invention;

[0028] Fig. 9 This is a schematic diagram of the division of the construction work surface of the present invention;

[0029] Fig.10 This is a schematic diagram of the development and construction work surface status management function of the present invention; DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0031] like Figure 1 The linear transportation engineering BIM and GIS thematic map making system shown is characterized in that it includes a GIS element generation module, a cross-platform interaction module and a construction work surface status management module;

[0032] The GIS element generation module is used to upload the geographic element layer in the two-dimensional GIS base map and the three-dimensional BIM model of the engineering component to the three-dimensional scene of the GIS platform according to the rules of spatial linking, to form a three-dimensional GIS map scene, to obtain the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, and to publish an online map service. This design is to establish a mapping relationship between the BIM model and the GIS geographic elements, so that these two types of data can correctly display their spatial positions in the same three-dimensional GIS map scene, and at the same time, the BIM model at the corresponding spatial position can be queried through the GIS spatial analysis function by using the association rules;

[0033] The cross-platform interaction module is used to call the online map service and the three-dimensional GIS map scene, build a spatial link between the BIM model and the geographical elements in the three-dimensional GIS map scene through the location code and WBS code of the linear traffic engineering BIM component, establish a database and develop a query function; by clicking a certain GIS element with a mouse, the detailed information of the engineering component attached to the element can be queried, including the name of the component, professional category, delivery status, model version and other basic engineering information, and return it as an attribute table for users to view. The design uses association rules to query the BIM model at the corresponding geographical location through the GIS spatial analysis function, realizing the function of querying the BIM model by spatial location;

[0034] The construction work surface status management module is used to divide the linear transportation project into several adjacent working surfaces according to the three-dimensional GIS map scene, combined with the spatial link between the BIM model and the geographic elements in the three-dimensional GIS map scene; according to the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, the progress of the project (traffic engineering, traffic diversion, underground pipe network relocation) on the working surface is mapped to the working surface status attributes, and a timeline tool for the entire construction process is established to map the construction work surface status, extract key frames at each milestone time node, and form a dynamic process of construction work surface status changes. The above-mentioned engineering thematic map integrates spatiotemporal attributes and engineering attributes, is easy to use interactively, can provide a macro and micro comprehensive perspective for linear transportation engineering project management, improve the efficiency of data use, and has a certain potential for expanding application scenarios. The above-mentioned design can provide an engineering management method based on thematic maps and three-dimensional scenes, integrate engineering construction attribute information into thematic maps, and provide a management perspective that combines macro and micro for the project.

[0035] The cross-platform interaction module is used for the integration and interaction of the BIM platform and the GIS platform. Through the secondary development technology of the Web front-end page, it realizes the query and interoperation of the geographical location, model version, construction progress and other attributes of the BIM model in the GIS scenario; the module also realizes the linear construction plan compilation function in the BIM and GIS scenarios. It can jump to the corresponding linear construction plan through the BIM model, identify the process conflicts and work efficiency differences at the same mileage position, and perform editing operations. This design is to realize the query and interoperation of the geographical location, model version, construction progress and other attributes of the BIM model in the GIS scenario, avoid frequent switching between the ArcGIS thematic map scene and the Autodesk model platform. At the same time, the module can also synchronize the annotations of the model on the two platforms to improve management efficiency.

[0036] The method for establishing the spatial link is as follows: first, extract the layers of the linear traffic engineering CAD drawings, convert the layers of the linear traffic engineering CAD drawings into GIS vector data format, and import them into the three-dimensional scene of the GIS platform as a two-dimensional GIS base map; then design the attribute table of each geographic element layer in the two-dimensional GIS base map, so that the location code and WBS code of the linear traffic engineering BIM component are bound to the geographic elements of the two-dimensional GIS base map (specifically, the linear traffic engineering construction surface elements, viaduct line elements, and point of interest elements) to form a spatial link. This design is to use association rules to query the BIM model at the corresponding geographical location through the GIS spatial analysis function, and realize the function of querying the BIM model by spatial location.

[0037] In the above technical solution, the cross-platform interaction module is also used to develop a cross-platform small window jump component. Click on the specific component in the GIS map scene to jump to the BIM model view of the corresponding version on the BIM platform, and display it side by side with the GIS map scene, so that on the same web page, you can view the macro environment of the BIM model through the GIS scene, and view the local details of the BIM model through the small window three-dimensional view. This design is to realize the query and interoperability of the geographical location, model version, construction progress and other attributes of the BIM model in the GIS scene, avoid frequent switching between ArcGIS thematic map scenes and Autodesk model platforms, and at the same time, the module can also synchronize the annotations to the model on the two platforms to improve management efficiency.

[0038] In the above technical solution, the cross-platform interaction module is also used to meet the needs of linear transportation engineering construction plan preparation and management based on BIM model, develop functional linear construction plan preparation components in linear transportation engineering BIM and GIS scenarios, realize cross-platform connection through database technology, and establish a mapping relationship between the model and the linear construction schedule in the BIM and GIS scenarios, wherein the linear construction schedule includes two dimensions: construction time (X-axis represents construction time) and engineering mileage, and each process is presented as parallel or intersecting curves in the schedule;

[0039] Click on the BIM model in the scene to jump to the corresponding linear construction schedule for query and editing. The linear construction schedule can be used to identify process conflicts at the same construction mileage position and compare the work efficiency differences between different processes. By implementing this step, the construction progress has both time and space attributes, further increasing the ability to analyze construction progress issues. This design adds a mileage dimension to the traditional Gantt chart. Through the linear construction plan compilation component, it is easier to find process conflicts in a certain mileage section at the same time and compare the work efficiency differences between different processes.

[0040] In the above technical solution, the specific method of extracting the layers of the linear traffic engineering CAD drawings and converting the layers of the linear traffic engineering CAD drawings into GIS vector data format is:

[0041] According to the point, line and surface feature types and professional categories of the linear transportation engineering, the layers of the linear transportation engineering CAD drawings are extracted, the GIS element deepening operation is performed on the layers, and the format conversion software is used to establish a workflow. According to the professional category of the CAD drawings, the workflow is split into Shapefile (a non-topological simple format for storing the geometric position and attribute information of geographic features) layers in the GIS vector data format. The Shapefile layers in the GIS vector data format specifically include transportation stations, viaducts, geodetic elevations, construction work surfaces, buildings, etc., and each professional category is converted into Shapefile feature types such as points, lines, surfaces, polyhedrons, and text annotations. The above design disassembles the CAD layers and converts them into the ArcGIS platform, which is fully compatible with the ShapFile format.

[0042] In the above technical solution, the GIS element deepening operation includes editing and processing operation, data format conversion operation, geographic coordinate registration operation, and symbol system design operation. The editing and processing operation is used to eliminate mutual interference between layers through layer editing and movement (some annotations on CAD layers will be converted into surface elements, which will block other layers and cause image visual effects);

[0043] The data format conversion operation is used to realize the format conversion between CAD and shapefile;

[0044] Geographic coordinate registration is used to convert the local coordinate system used in CAD into the world coordinate system commonly used by GIS software. For example, the projection tool of GIS software can be used to convert the local projection coordinate system and local elevation system of traffic engineering CAD drawings and BIM models into WGS1984 (EPSG:4326) geographic coordinate system and elevation system.

[0045] The symbol system design operation is used to set the color and border of the point, line and surface layers on the GIS platform. Through comprehensive cartographic design, the readability and practicality of thematic maps can be improved from an artistic perspective.

[0046] In the above technical solution, the attribute table of each geographic element layer in the two-dimensional GIS base map is designed so that the location code and WBS code of the linear transportation engineering BIM component are bound to the geographic elements of the two-dimensional GIS base map in the following specific manner:

[0047] Use the association and connection tools of GIS software or Python script tools to uniquely match external BIM attribute data, location codes, and WBS codes through the ObjectID keyword and append them to GIS elements, thereby forming an attribute association between the BIM model and GIS elements. In the linear transportation engineering thematic map, attribute information will continue to change as the project progresses. The Python script tool can be used to automatically update attribute information.

[0048] In the above technical solution, the point, line and surface element types are vector element types, and the professional categories include architecture, electrical, structure, water supply and drainage, and HVAC.

[0049] In the above technical solution, the online map service and three-dimensional scene on the GIS platform refers to publishing the traffic engineering GIS data as an online service in the form of feature layers, converting the BIM model into a building scene layer, packaging it into slpk format, and publishing it as an online service. A three-dimensional empty scene is created on the GIS platform, and the published GIS data and BIM model are added to it to form the base map of the linear traffic engineering BIM and GIS thematic map. The GIS elements and BIM models are published as online services as the basic data for the scene base map for subsequent function development.

[0050] A method for producing a linear transportation engineering BIM and GIS thematic map, characterized in that it includes the following methods:

[0051] Step 1: The GIS element generation module uploads the geographic element layer in the 2D GIS base map and the 3D BIM model of the engineering component to the 3D scene of the GIS platform according to the rules of spatial linking, forms a 3D GIS map scene, obtains the mapping relationship between the 3D BIM model and the GIS geographic elements, and publishes an online map service;

[0052] Step 2: The cross-platform interactive model calls the online map service and the three-dimensional GIS map scene, builds the spatial link between the BIM model and the geographic elements in the three-dimensional GIS map scene through the location code and WBS code of the linear transportation engineering BIM component, establishes a database and develops a query function;

[0053] Step 3: Construction surface status management model Based on the 3D GIS map scene, combined with the spatial link between the BIM model and the geographic elements in the 3D GIS map scene, the linear transportation project is divided into several adjacent working surfaces; according to the mapping relationship between the 3D BIM model and the GIS geographic elements, the engineering progress on the working surface is mapped to the working surface status attributes, and a timeline tool for the entire construction process is established to map the construction surface status, extract key frames at each milestone time node, and form a dynamic process of construction surface status changes. Various types of construction progress data, engineering quantity statistics, process completion status, etc. generated by the data statistical analysis software can be directly called by the engineering thematic map platform in the form of services, linked and referenced with the construction scene, and finally form a project operation, time and location map, thereby helping managers to quickly grasp the overall information of the project from a macro perspective from the operation, time and location map interface.

[0054] In the above technical solution, the time-mileage linear construction schedule is different from the construction progress management mode of a single time dimension such as the Gantt chart and the bar chart. The construction mileage dimension is added to the one-dimensional progress chart to form a two-dimensional chart, and the progress plan of each process of the linear traffic engineering management process is abstracted into a curve, which is depicted in the time-mileage two-dimensional coordinate quadrant, thereby forming a progress schedule with a slope, and each process is presented as a parallel or intersecting curve in the schedule;

[0055] In the above technical solution, the construction work surface status management function uses the transition color band shown in the legend to distinguish the construction progress from 0% to 100%.

[0056] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0057] As shown in Figure 2, linear traffic engineering CAD drawings are split into Shapefile layers according to their professional categories, including transportation stations, viaducts, geodetic elevations, construction work surfaces, buildings, etc. Each professional category is converted into Shapefile feature types such as points, lines, surfaces, polyhedrons, and text annotations.

[0058] As shown in Figure 3, the local projection coordinate system and local elevation system of the traffic engineering CAD drawings and BIM models are converted to the WGS1984 (EPSG:4326) geographic coordinate system and elevation system, and the BIM model is placed at the actual location and actual elevation of the project to correct the mismatch between the BIM model and geographic elements caused by the deviation of the coordinate system and elevation system.

[0059] As shown in Figure 4, the online map service and three-dimensional scene of linear transportation engineering published on the GIS platform include GIS online base map (OSM map, world topographic map), GIS data (buildings), BIM model (transportation stations, viaducts), construction work surface, etc.

[0060] like Figure 5 As shown in the figure, the linear traffic engineering online map service and three-dimensional scene published on the GIS platform can switch the observation perspective of the three-dimensional scene through perspective translation, zooming, and rotation components, measure the length and area through the measurement component, and control the visibility and transparency of the layer through the layer control component.

[0061] like Figure 6 As shown in the figure, based on the attribute query function developed based on the spatial link between the BIM model and the GIS elements, by clicking a GIS element with the mouse, you can query the detailed information of the engineering components attached to the element, including the name of the components, professional category, delivery status, model version and other basic engineering information, which is displayed in the form of an attribute window for users to view.

[0062] like Figure 7 As shown in the figure, a cross-platform small window jump component is developed. By clicking on a specific component in the GIS map scene, the component jumps to the BIM model view of the corresponding version on the BIM platform and displays it side by side with the GIS map scene. This allows users to view the macro environment of the BIM model through the GIS scene and the local details of the BIM model through the small window 3D view on the same web page.

[0063] like Figure 8 As shown in the figure, a functional linear construction plan preparation component is developed in the linear transportation engineering BIM and GIS scene. Click the BIM model in the scene to jump to the corresponding linear construction plan table for query and editing. According to the curve crossing phenomenon in the linear construction plan table, the process conflicts at the same construction mileage position can be identified. According to the slope of the curve in the linear construction plan table, the work efficiency differences between different processes can be compared. This component enables the construction progress to have both time and space attributes, further increasing the ability to analyze the construction progress issues.

[0064] Through database connection, the annotation tags on the GIS platform and the model attributes on the BIM platform are synchronized with each other, so that the design and construction problems have both macro and micro perspectives and time and space attributes.

[0065] like Fig. 9 As shown, the three-dimensional GIS scene of the overall scope of the linear transportation project is divided into multiple construction work surface intervals.

[0066] like Fig.10 As shown in the figure, through symbol system design, different visual effects are used to distinguish the different states of each construction work surface, and a timeline component is developed to dynamically display the project progress and completion status, ultimately forming the project's work, time and location map.

[0067] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0068] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A linear transportation engineering BIM and GIS thematic map production system, characterized in that: include: The GIS element generation module is used to upload the geographic element layer in the two-dimensional GIS base map and the three-dimensional BIM model of the engineering component to the three-dimensional scene of the GIS platform according to the rules of spatial linking, to form a three-dimensional GIS map scene, to obtain the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, and to publish online map services; The cross-platform interaction module is used to call the online map service and the three-dimensional GIS map scene, build a spatial link between the BIM model and the geographic elements in the three-dimensional GIS map scene through the location code and WBS code of the linear transportation engineering BIM component, establish a database and develop a query function; It is also used to develop functional linear construction plan preparation components in the BIM and GIS scenarios of linear transportation projects, realize cross-platform connection through database technology, and establish a mapping relationship between the model and the linear construction plan in the BIM and GIS scenarios. The linear construction plan contains two dimensions: construction time and project mileage. Each process is presented as a parallel or intersecting curve in the plan. Click on the BIM model in the scene to jump to the corresponding linear construction plan. With the help of the linear construction plan, the process conflicts at the same construction mileage position are identified, and the work efficiency differences between different processes are compared. The construction mileage dimension is added to the one-dimensional progress chart to form a two-dimensional chart, and the progress plan of each process in the linear transportation project management process is abstracted as a curve, which is portrayed in the two-dimensional coordinate quadrant of time and mileage to form a progress plan with a slope. The construction surface status management module is used to divide the linear transportation project into several adjacent working surfaces based on the three-dimensional GIS map scene and the spatial links between the BIM model and the geographic elements in the three-dimensional GIS map scene; according to the mapping relationship between the three-dimensional BIM model and the GIS geographic elements, the project progress on the working surface is mapped to the working surface status attributes, and a timeline tool for the entire construction process is established. The construction surface status is mapped and integrated, and key frames are extracted at each milestone time node to form a dynamic process of construction surface status changes.

2. The linear transportation engineering BIM and GIS thematic map making system according to claim 1 is characterized by: The spatial link is established in the following way: first, the layers of the linear traffic engineering CAD drawings are extracted, and the layers of the linear traffic engineering CAD drawings are converted into GIS vector data format, and imported into the three-dimensional scene of the GIS platform as a two-dimensional GIS base map; then, the attribute table of each geographic element layer in the two-dimensional GIS base map is designed, so that the location code and WBS code of the linear traffic engineering BIM component are bound to the geographic elements of the two-dimensional GIS base map to form a spatial link.

3. The linear transportation engineering BIM and GIS thematic map making system according to claim 1 is characterized by: The cross-platform interaction module is also used to develop a cross-platform small window jump component. By clicking on a specific component in the GIS map scene, you can jump to the BIM model view of the corresponding version on the BIM platform and display it side by side with the GIS map scene. This allows you to view the macro environment of the BIM model through the GIS scene and the local details of the BIM model through the small window three-dimensional view on the same web page.

4. The linear transportation engineering BIM and GIS thematic map making system according to claim 2 is characterized by: The specific method of extracting the layers of the linear traffic engineering CAD drawings and converting the layers of the linear traffic engineering CAD drawings into GIS vector data format is as follows: According to the point, line and surface feature types and professional categories of linear transportation engineering, the layers of linear transportation engineering CAD drawings are extracted, and GIS element deepening operations are performed on the layers. A workflow is established using format conversion software, and the workflow is split into Shapefile layers in GIS vector data format according to the professional categories of CAD drawings.

5. The linear transportation engineering BIM and GIS thematic map making system according to claim 4 is characterized by: The GIS element deepening operation includes editing and processing operation, data format conversion operation, geographic coordinate registration operation, and symbol system design operation. The editing and processing operation is used to eliminate mutual interference between layers by editing and moving layers. The data format conversion operation is used to realize the format conversion between CAD and shapefile; The geographic coordinate registration operation is used to convert the local coordinate system used in CAD into the world coordinate system commonly used by GIS software; The symbol system design operation is used to set the color and border of point, line and surface layers on the GIS platform.

6. The linear transportation engineering BIM and GIS thematic map making system according to claim 2 is characterized by: The specific method of designing the attribute table of each geographic element layer in the two-dimensional GIS base map so that the location code and WBS code of the linear transportation engineering BIM component are bound to the geographic elements of the two-dimensional GIS base map is as follows: Use the association and connection tools of GIS software or Python script tools to uniquely match external BIM attribute data, location codes, and WBS codes through the ObjectID keyword and append them to GIS elements, thereby forming an attribute association between the BIM model and GIS elements.

7. The linear transportation engineering BIM and GIS thematic map making system according to claim 5 is characterized by: The point, line and surface element types are vector element types, and the professional categories include architecture, electrical engineering, structure, water supply and drainage, and HVAC.

8. A method for producing linear traffic engineering BIM and GIS thematic maps based on the system of claim 1, characterized in that: It includes the following methods: Step 1: The GIS element generation module uploads the geographic element layer in the 2D GIS base map and the 3D BIM model of the engineering component to the 3D scene of the GIS platform according to the rules of spatial linking, forms a 3D GIS map scene, obtains the mapping relationship between the 3D BIM model and the GIS geographic elements, and publishes an online map service; Step 2: The cross-platform interactive model calls the online map service and the three-dimensional GIS map scene, builds the spatial link between the BIM model and the geographic elements in the three-dimensional GIS map scene through the location code and WBS code of the linear transportation engineering BIM component, establishes a database and develops a query function; Step 3: The construction surface status management model divides the linear transportation project into several adjacent working surfaces based on the 3D GIS map scene and the spatial links between the BIM model and the geographic elements in the 3D GIS map scene; based on the mapping relationship between the 3D BIM model and the GIS geographic elements, the engineering progress on the working surface is mapped to the working surface status attributes, and a timeline tool for the entire construction process is established. The construction surface status is mapped and integrated, and key frames are extracted at each milestone time node to form a dynamic process of construction surface status changes.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 8 are implemented.

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