Road maintenance unit intelligent division management system based on BIM-GIS

Abstract

The invention provides a road maintenance unit intelligent division management system based on BIM-GIS, and belongs to the technical field of traffic operation and maintenance. The system comprises a BIM module used for establishing a BIM model of a target road; the GIS module is used for carrying out maintenance unit division on the target road based on a unit division rule to obtain a plurality of maintenance units; the BIM-GIS fusion module is used for carrying out position matching on the BIM model and a plurality of maintenance units; and the interaction module is used for displaying the maintenance information of each maintenance unit and executing maintenance operation in response to the maintenance instruction. The road maintenance unit intelligent division management system based on the BIM-GIS provided by the invention can improve the refinement degree of road maintenance and significantly improve the accuracy and efficiency of maintenance management.

Description

Technical Field

[0001] The present invention relates to the field of traffic operation and maintenance technology, and in particular to a BIM-GIS-based intelligent division and management system for highway maintenance units. Background Art

[0002] Currently, highway maintenance management systems based on GIS (Geographic Information System) enable digital management of highway assets, integrating spatial data and attribute information of highways and their ancillary facilities, providing strong data support for maintenance decision-making. Furthermore, the application of BIM (Building Information Modeling) technology in highway maintenance also demonstrates great potential. The high-precision highway facility models it provides enable comprehensive and refined management from the macro to the micro level.

[0003] However, the above two technologies still have the following limitations: 1. The GIS-based highway maintenance management system has a relatively rough division of maintenance units, usually divided by kilometer pile number, without considering the differences in facility characteristics, resulting in inaccurate allocation of maintenance resources. 2. The correspondence between BIM and actual geographic location is vague, making it difficult to effectively integrate with other spatial data, resulting in limited application efficiency. Summary of the Invention

[0004] The present invention provides a BIM-GIS-based intelligent division and management system for highway maintenance units, which is used to solve the defects of the existing technology in which the application of GIS and BIM in highway maintenance is limited, and achieve the technical effect of improving the efficiency and refinement of highway maintenance.

[0005] The BIM-GIS-based intelligent division and management system for highway maintenance units provided by the present invention may include: BIM module, used to build the BIM model of the target highway; A GIS module is used to divide the target highway into maintenance units based on a unit division rule to obtain a plurality of maintenance units; A BIM-GIS fusion module, configured to positionally match the BIM model with the multiple maintenance units; An interactive module, used to display maintenance information of each maintenance unit and perform maintenance operations in response to maintenance instructions; The unit division rule includes at least one of the following: Divide the maintenance units according to the facility types of the target highway; Divide the curing units according to the standard curing unit length; Maintenance units are divided according to the properties of the roadbed and / or pavement.

[0006] In one embodiment, the BIM module is specifically used to: Constructing a roadbed BIM model of the target highway based on the design drawing data and topographic map data of the target highway; Constructing a pavement BIM model of the target highway based on the design drawing data and latitude and longitude data of the target highway; Based on the design drawing data and construction data of the target highway, a bridge BIM model, a tunnel BIM model and ancillary facilities BIM model of the target highway are constructed.

[0007] In one embodiment, dividing the maintenance units according to the facility types of the target highway includes: Use fixed length to divide the facilities with strip-like characteristics into maintenance units; Individual facilities with complete structures are divided into single maintenance units.

[0008] In one embodiment, dividing the curing units according to the standard curing unit lengths includes: Bridges, tunnels and roadbeds are divided into maintenance units based on pile numbers.

[0009] In one embodiment, the division of maintenance units according to the properties of the roadbed and / or road surface includes: Divide the roadbed into maintenance units based on the changes in the cross-sectional characteristics of the roadbed; Based on the distribution of protective facilities on the roadbed and / or road surface, the roadbed and / or road surface are divided into maintenance units.

[0010] In one embodiment, the BIM-GIS fusion module is specifically used to: Converting the BIM model data format into a target data format supported by the GIS module; The BIM model data in the target data format is matched with the maintenance unit position of the GIS module based on a coordinate conversion method or a spatial analysis method.

[0011] In one embodiment, dividing the bridge into maintenance units based on pile numbers includes: The maintenance unit is determined according to the following calculation method: Maintenance unit starting pile number = bridge position pile number - total bridge length / 2; The end point pile number of the maintenance unit = the bridge position pile number + the total length of the bridge / 2.

[0012] In one embodiment, dividing the tunnel into maintenance units based on the pile number includes: The maintenance unit is determined according to the following calculation method: Maintenance unit starting pile number = tunnel entrance pile number; The end pile number of the maintenance unit = the center pile number of the tunnel + the total length of the tunnel / 2.

[0013] In one embodiment, dividing the roadbed into maintenance units based on pile numbers includes: The roadbed is divided into maintenance units based on pile numbers of whole hundred meters.

[0014] In one embodiment, the maintenance information includes at least one of the following: Maintenance unit division result data, road property data, maintenance data, and traffic data.

[0015] The BIM-GIS-based intelligent highway maintenance unit division and management system provided by this invention, on the one hand, divides maintenance units by comprehensively considering multiple dimensions such as facility type, standard maintenance unit length, and roadbed and / or pavement properties. This makes the division of maintenance units more rational, thereby improving the refinement of highway maintenance. On the other hand, by matching the location of BIM models with maintenance units, it can achieve deep integration of BIM models with the GIS platform, significantly improving the accuracy and efficiency of maintenance management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention.

[0018] Figure 2 It is a flowchart of a specific application example of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention.

[0019] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] Figure 1 This is a schematic diagram of the structure of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention. Figure 1 As shown, the system may include: BIM module 110, used to establish a BIM model of the target highway; GIS module 120, configured to divide the target highway into maintenance units based on a unit division rule to obtain a plurality of maintenance units; A BIM-GIS fusion module 130 is used to positionally match the BIM model with multiple maintenance units; Interaction module 140, for displaying maintenance information of each maintenance unit and performing maintenance operations in response to maintenance instructions; The unit division rules include at least one of the following: Divide the maintenance units according to the facility types of the target highway; Divide the curing units according to the standard curing unit length; Maintenance units are divided according to the properties of the roadbed and / or pavement.

[0022] It should be noted that the operating carrier of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention can be various computer devices, such as mobile phones, tablet computers, laptops, PDAs, etc., and the present invention does not make specific limitations on this.

[0023] The target road may be a road of any length, and the present invention does not impose any specific limitation on this.

[0024] The BIM module 110 can construct a BIM model of the target highway based on design drawings, route latitude and longitude data, construction data, topographic map data and other information of the target highway.

[0025] For example, the BIM model can encompass the target highway and its ancillary facilities, including roadbeds, pavements, bridges, tunnels, etc. The accuracy of the BIM model can be controlled according to the standards required for maintenance management, thereby providing accurate basic data and reference for subsequent highway maintenance work.

[0026] Specifically, the BIM module 110 constructs the BIM model of the target highway, which may include the following steps: Step 1: Data preprocessing.

[0027] Data cleaning: Detailed review and cleaning of collected data to eliminate duplicate data, erroneous data, and other incomplete or abnormal data to ensure data quality and integrity.

[0028] Data format conversion: According to the requirements of BIM modeling software, data from different sources are converted into formats supported by the software, such as IFC (Industry Foundation Classes) format and DWG (Drafting View Graphics) format to ensure data compatibility.

[0029] Data integration: Systematically integrate data from different sources to create a unified data model. For example, link and integrate road centerlines in design drawings with road surface information in latitude and longitude data to form a comprehensive data set for subsequent BIM model construction and analysis.

[0030] Step 2: Model construction.

[0031] The BIM module 110 constructs a BIM model of the target highway using BIM modeling software based on the design drawings, route latitude and longitude data, construction data, topographic map data and other information of the target highway.

[0032] Step 3: Model verification.

[0033] The accuracy of the BIM model must meet certain requirements, such as L6.0 level requirements. An automated inspection system can be used to automatically check the compliance of the BIM model to ensure that the design meets the relevant standard requirements. Specifically: (1) Geometry check: Collision detection: automatically identify spatial conflicts between components; Connection check: verify the connection relationship between components; Dimension check: Ensure that the model dimensions meet the design requirements.

[0034] (2) Attribute inspection: Completeness check: Verify the completion of necessary attribute information; Compliance check: ensure that attribute values comply with standard specifications; Consistency check: Check the attribute associations between different components.

[0035] The GIS module 120 may divide the target highway into maintenance units based on the unit division rule to obtain a plurality of maintenance units.

[0036] Specifically, the GIS module 120 may first name each product object of the BIM model. The naming rule may be adjusted according to actual conditions, and the present invention does not impose any specific limitation thereto.

[0037] For example, the naming rule may include unit number + road property English abbreviation + uplink and downlink number + sequence number. 1) The maintenance unit number is the number corresponding to the BIM model in the maintenance system. The maintenance unit number and subsequent alphanumeric characters are separated by the English “-” character.

[0038] 2) Road property is represented by two or three letters or numbers in English. For abbreviations, please see Table 1.

[0039] 3) The upper and lower row numbers record the location of the object. If it spans the upper and lower rows, it is recorded as the upper row, the upper row is 1, and the lower row is 2.

[0040] 4) The serial number indicates the order of objects of the same road property in this maintenance unit. It is a two-digit number and is sorted from small pile number to large pile number, and then from the central dividing strip to both sides.

[0041] Example 1: DYHF_G7_20211103_001-LE101 indicates the first upbound lane of the road within the maintenance unit number (DYHF_G7_20211103_001); Example 2: DYHF_G7_20211103_001-SB202 indicates the signboard with the number 2 in the descending sequence of the facility signboards along the maintenance unit.

[0042] The classification of road property objects is shown in Table 1: Table 1 Road Product Object Reference Table in: 1) Classify by individual elements in the layer object class, and name multiple different objects in a maintenance unit according to the rules.

[0043] 2) The object in the layer object class is already the smallest object, so there is no need to further subdivide the model.

[0044] For example, lane lines and intersection markings do not need to be treated as independent elements and should be classified by lane. Signposts do not need to separate the pillars and signs and should be combined into traffic sign objects.

[0045] After determining the naming rule, the GIS module 120 may divide the target highway into maintenance units based on the unit division rule, thereby obtaining a plurality of maintenance units.

[0046] The unit division rule may include any one of dividing the maintenance units according to the facility type of the target highway, dividing the maintenance units according to the standard maintenance unit length, and dividing the maintenance units according to the attributes of the roadbed and / or pavement.

[0047] It can be understood that compared with the technical solution of dividing highway maintenance units according to kilometer pile numbers in the existing technology, the unit division rules provided by the present invention take into account multiple dimensions such as facility type, standard maintenance unit length, roadbed and / or pavement properties, which can make the maintenance unit division more reasonable, thereby improving the level of refinement of highway maintenance.

[0048] The BIM-GIS fusion module 130 may include various GIS platforms, such as ArcGIS, SuperMap, etc.

[0049] When integrating BIM and GIS, the BIM-GIS fusion module 130 first converts the format of the BIM model data into a target data format supported by the GIS module 120 , such as Shapefile, GeoJSON, etc.

[0050] Then, based on a coordinate conversion method or a spatial analysis method, the BIM model data in the target data format is matched with the locations of the maintenance units divided by the GIS module 120, so that the locations of the BIM model and the GIS map accurately correspond.

[0051] The coordinate transformation method may include, for example, a scaling transformation method, a translation transformation method, a rotation transformation method, etc. The spatial analysis method may include, for example, a vector space analysis method, a grid space analysis method, etc. The present invention does not specifically limit the specific types of coordinate transformation methods and spatial analysis methods.

[0052] It can be understood that the BIM-GIS fusion module 130 realizes the automatic fusion of BIM and GIS data by matching the positions of the BIM model and the maintenance unit. It does not rely on the inherent information carried in the modeling stage, and the data update frequency is shortened to real-time, which greatly improves the maintenance efficiency and significantly reduces manual intervention.

[0053] The interactive module 140 can display the maintenance information of each maintenance unit and support users to perform operations such as map browsing, query and analysis.

[0054] Specifically, the interaction module 140 may have a concise and intuitive user interface to facilitate operations by different user groups, such as maintenance personnel, managers, decision makers, etc.

[0055] For example, when a user needs to query the maintenance information of a maintenance unit, a maintenance instruction can be output through the user interface (touch, mouse / keyboard control, etc.). The interactive module 140 can receive the maintenance instruction and display the maintenance information of the maintenance unit in response to the maintenance instruction.

[0056] The user interface can include functional modules such as maintenance unit division display, editing, data analysis, map display, etc. to meet the diverse needs of users.

[0057] Furthermore, the interactive module 140 can use charts, maps, etc. to intuitively display maintenance information such as maintenance unit division results, road property data, maintenance data, traffic data, etc., so as to facilitate user understanding.

[0058] The interaction module 140 can also realize the function of collecting the full life cycle maintenance data of each maintenance unit through the BIM model, such as inspection records, maintenance and repair, and other full life cycle data management.

[0059] It is understandable that the intuitive interface design of the interactive module 140 provided by the present invention can greatly improve the convenience and efficiency of user operations, enabling maintenance managers to handle maintenance work more efficiently.

[0060] The BIM-GIS-based intelligent highway maintenance unit division and management system provided by this invention, on the one hand, divides maintenance units by comprehensively considering multiple dimensions such as facility type, standard maintenance unit length, and roadbed and / or pavement properties. This makes the division of maintenance units more rational, thereby improving the refinement of highway maintenance. On the other hand, by matching the location of BIM models with maintenance units, it can achieve deep integration of BIM models with the GIS platform, significantly improving the accuracy and efficiency of maintenance management.

[0061] In one embodiment, the BIM module 110 may be specifically used to: Construct a roadbed BIM model of the target highway based on the design drawing data and topographic map data of the target highway; Build a BIM model of the target highway's pavement based on its design drawing data and latitude and longitude data; Based on the design drawing data and construction data of the target highway, the bridge BIM model, tunnel BIM model and ancillary facilities BIM model of the target highway are constructed.

[0062] Specifically, the BIM module 110 can establish a hierarchical model framework based on the strip characteristics of the highway project: Roadbed BIM model: Based on the design drawing data and topographic map data, a roadbed BIM model is constructed, including roadbed earthwork, drainage, retaining and protection, small bridges and culverts, etc.

[0063] Pavement BIM model: Based on the latitude and longitude data and design drawing data, a pavement BIM model is constructed, including the surface layer, base layer, subbase layer, cushion layer, etc. The surface layer is divided into different layers, including the upper layer, middle layer, and lower layer.

[0064] Bridge BIM model: Based on the design drawing data and construction data, a bridge BIM model is constructed, including the bridge superstructure, substructure, bridge deck system, etc.

[0065] Tunnel BIM model: Based on the design drawing data and construction data, a tunnel BIM model is constructed, including the tunnel structure, portal, gate, lining, etc.

[0066] Ancillary facilities BIM model: Based on the design drawing data and construction data, a BIM model of the entire ancillary facilities of the target highway is constructed, such as traffic signs, road markings, protective facilities, anti-glare facilities, isolation facilities, contour marks, etc.

[0067] The BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention can improve the accuracy of the highway BIM model by establishing a layered BIM model framework, thereby ensuring the refined maintenance of the highway maintenance unit intelligent division and management system.

[0068] In one embodiment, the maintenance unit division according to the facility type of the target highway may include: Use fixed length to divide the facilities with strip-like characteristics into maintenance units; Individual facilities with complete structures are divided into single maintenance units.

[0069] Specifically, for objects with strip-like characteristics, such as roadbeds, pavements, and ancillary facilities, fixed lengths can be used for segmentation. Individual facilities, such as bridges and tunnel sections, can be segmented based on structural integrity, meaning that a single structure is considered a complete maintenance unit, rather than being segmented by length.

[0070] A maintenance unit is defined as the smallest unit of road property. It refers to a fixed section of road property within a certain length of a route. Its physical location remains unchanged, and the maintenance units are arranged continuously. After dividing the maintenance units, a digital model of the asset can be created. For example, the minimum maintenance unit length for a roadbed can be 100 meters or 200 meters, while the minimum maintenance unit length for bridges and tunnels is one bridge or one tunnel, respectively.

[0071] In one embodiment, the division of the curing units according to the standard curing unit length may include: Bridges, tunnels and roadbeds are divided into maintenance units based on pile numbers.

[0072] Specifically, the overall division nodes for bridges, tunnels and roadbeds may include: roadbed starting pile number, bridge starting pile number, bridge ending pile number, tunnel starting pile number, tunnel ending pile number, and roadbed ending pile number.

[0073] The maintenance units of bridges are divided based on pile numbers. The maintenance units can be determined according to the following calculation method: Maintenance unit starting pile number = bridge position pile number - total bridge length / 2; The end point pile number of the maintenance unit = the bridge position pile number + the total length of the bridge / 2.

[0074] The tunnel maintenance unit is divided based on the pile number. The maintenance unit can be determined according to the following calculation method: Maintenance unit starting pile number = tunnel entrance pile number; The end pile number of the maintenance unit = the center pile number of the tunnel + the total length of the tunnel / 2.

[0075] The maintenance unit division of roadbed based on pile number can include: The roadbed is divided into maintenance units based on the pile numbers of whole hundred meters.

[0076] It can be understood that after excluding the bridge and tunnel sections, it becomes the roadbed section, and the roadbed section can be divided at pile numbers of whole 100 meters.

[0077] In one embodiment, the division of maintenance units according to the properties of the roadbed and / or pavement may include: Divide the roadbed into maintenance units based on the changes in the cross-sectional characteristics of the roadbed; Based on the distribution of protective facilities on the roadbed and / or road surface, the roadbed and / or road surface are divided into maintenance units.

[0078] Specifically, on the basis of dividing the maintenance units according to the standard maintenance unit length, the roadbed and pavement can be further dynamically divided according to their attribute information.

[0079] For example, the changes in the cross-sectional characteristics of the roadbed can be analyzed first, key change points can be identified, and the roadbed can be divided into maintenance units based on these key change points. Key change points can be points with large changes in cross-sectional area, which may cause safety hazards or require intensive maintenance.

[0080] In addition, the distribution of protective facilities on the roadbed and / or road surface can be considered to optimize the segmentation location.

[0081] For example, when the number of protective facilities on the roadbed and / or road surface exceeds a certain threshold, or the distribution density of the protective facilities is large, the roadbed and / or road surface can be appropriately divided into multiple maintenance units.

[0082] In addition, fragmented maintenance units less than 100 meters may not be integrated with adjacent maintenance units and may be retained in their original state.

[0083] The BIM-GIS-based intelligent division and management system for highway maintenance units provided by the present invention divides maintenance units by comprehensively considering unit division rules in multiple dimensions, such as facility type, standard maintenance unit length, roadbed and / or pavement properties. This breaks through the limitation of existing technologies that mainly rely on manual experience, achieves a more scientific and refined unit division, and provides a solid foundation for subsequent maintenance management and decision support.

[0084] The technical solution of the present invention is further illustrated below by taking a specific application example of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention.

[0085] like Figure 2 As shown, the data required for the BIM module 110 to establish the BIM model of the target highway can be obtained first, including design drawing data, latitude and longitude data, topographic map data, etc.

[0086] Next, the BIM module 110 can construct a BIM model of the target highway based on the acquired data, which specifically includes preprocessing steps such as data cleaning, data format conversion, and data integration, and establish a BIM model based on the preprocessed data; then complete the accuracy control and verification operations of the BIM model.

[0087] Furthermore, the GIS module 120 divides the target highway into maintenance units (unit model segmentation) based on the unit division rule to obtain multiple maintenance units. Specifically, the maintenance unit division may include dividing the bridge, tunnel, roadbed, etc. into maintenance units.

[0088] Finally, the BIM-GIS fusion module 130 matches the BIM model with the divided maintenance units, displays the divided units through the interaction module 140, and performs maintenance operations in response to maintenance instructions.

[0089] Figure 3 An example of a physical structure diagram of an electronic device is provided, which can implement the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention.

[0090] like Figure 3As shown, the electronic device may include: a processor 310, a communications interface 320, a memory 330, and a communication bus 340. The processor 310, the communications interface 320, and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the implementation process of the BIM-GIS-based highway maintenance unit intelligent division and management system provided by the present invention.

[0091] Furthermore, the logic instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0092] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0093] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A BIM-GIS-based highway maintenance unit intelligent division and management system, characterized by: include: BIM module, used to build the BIM model of the target highway; A GIS module is used to divide the target highway into maintenance units based on a unit division rule to obtain a plurality of maintenance units; A BIM-GIS fusion module, configured to positionally match the BIM model with the multiple maintenance units; An interactive module, used to display maintenance information of each maintenance unit and perform maintenance operations in response to maintenance instructions; The unit division rule includes at least one of the following: Divide the maintenance units according to the facility types of the target highway; Divide the curing units according to the standard curing unit length; Maintenance units are divided according to the properties of the roadbed and / or pavement.

2. The BIM-GIS-based highway maintenance unit intelligent division and management system according to claim 1 is characterized in that: The BIM module is specifically used for: Constructing a roadbed BIM model of the target highway based on the design drawing data and topographic map data of the target highway; Constructing a pavement BIM model of the target highway based on the design drawing data and latitude and longitude data of the target highway; Based on the design drawing data and construction data of the target highway, a bridge BIM model, a tunnel BIM model and ancillary facilities BIM model of the target highway are constructed.

3. The BIM-GIS-based highway maintenance unit intelligent division and management system according to claim 1 is characterized in that: The division of maintenance units according to the facility type of the target highway includes: Use fixed length to divide the facilities with strip-like characteristics into maintenance units; Individual facilities with complete structures are divided into single maintenance units.

4. The BIM-GIS-based highway maintenance unit intelligent division and management system according to claim 1 is characterized in that: The division of the curing units according to the standard curing unit length includes: Bridges, tunnels and roadbeds are divided into maintenance units based on pile numbers.

5. The BIM-GIS-based highway maintenance unit intelligent division and management system according to claim 1 is characterized in that: The division of maintenance units according to the properties of the roadbed and / or pavement includes: Divide the roadbed into maintenance units based on the changes in the cross-sectional characteristics of the roadbed; Based on the distribution of protective facilities on the roadbed and / or road surface, the roadbed and / or road surface are divided into maintenance units.

6. The BIM-GIS-based highway maintenance unit intelligent division and management system according to claim 1 is characterized in that: The BIM-GIS fusion module is specifically used to: Converting the BIM model data format into a target data format supported by the GIS module; The BIM model data in the target data format is matched with the maintenance unit position of the GIS module based on a coordinate conversion method or a spatial analysis method.

7. The BIM-GIS-based intelligent division and management system for highway maintenance units according to claim 4 is characterized in that: The division of bridge maintenance units based on pile numbers includes: The maintenance unit is determined according to the following calculation method: Maintenance unit starting pile number = bridge position pile number - total length of bridge / 2; The end point pile number of the maintenance unit = the bridge position pile number + the total length of the bridge / 2.

8. The BIM-GIS-based intelligent division and management system for highway maintenance units according to claim 4 is characterized in that: The tunnel maintenance unit division based on pile numbers includes: The maintenance unit is determined according to the following calculation method: Maintenance unit starting pile number = tunnel entrance pile number; The end pile number of the maintenance unit = the center pile number of the tunnel + the total length of the tunnel / 2.

9. The BIM-GIS-based intelligent division and management system for highway maintenance units according to claim 4 is characterized in that: The division of the roadbed into maintenance units based on the pile numbers includes: The roadbed is divided into maintenance units based on pile numbers of whole hundred meters.

10. The BIM-GIS-based highway maintenance unit intelligent division and management system according to any one of claims 1 to 9, characterized in that: The maintenance information includes at least one of the following: Maintenance unit division result data, road property data, maintenance data, and traffic data.

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