BIM (Building Information Modeling)-based visual management method and system for full-life-cycle digital assets of rail transit engineering

Abstract

The invention relates to a BIM-based digital asset visual management method and system for a rail transit project, and the method comprises the steps: inputting digital assets of different stages of the project into a same BIM model, and forming an asset database; performing node decomposition on an engineering three-dimensional model in the BIM model to obtain a component structure tree; correspondingly classifying and packaging the digital assets in the asset database according to the components to which the digital assets belong in the component structure tree to form a plurality of asset units, and associating each asset unit with the corresponding component; and selecting a target node component in the BIM model, and displaying an asset unit correspondingly associated with the target node component. Through the setting, the digital assets of each stage are collected based on the same BIM model, full life cycle management of a project is realized, the digital asset management method is visually presented to a user, the user can quickly select desired information in the model, and the management efficiency of the digital assets is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of digital asset management, and in particular, to a digital asset visualization management method and system for rail transit projects based on BIM. Background Art

[0002] The rail transit project is a complex systematic project involving multiple specialties and roles, featuring multiple constraints, long cycle, and large investment. Under the traditional management mode, the data and information in each stage are often isolated, and the communication and collaboration between stages are restricted. With the rapid development of the rail transit industry, higher requirements are put forward for the informatization and digitalization levels of project management, and efficient information management and collaboration need to be achieved through advanced technical means.

[0003] As an effective digital tool, BIM (Building Information Modeling) technology can provide a three-dimensional visualization model for rail transit projects and integrate geometric information, status information, professional attributes, etc. of buildings. BIM technology has been widely applied throughout the life cycle of rail transit projects, including planning, design, construction, operation, and maintenance, which can improve the information integration degree of the project and provide a collaborative work platform for all participants.

[0004] The rail transit project involves a large number of digital assets, including feasibility study materials, design drawings, construction drawings, construction records, quality inspection reports, security inspection reports, various monitoring image materials, equipment and material information, completion acceptance information, maintenance information, etc. These digital assets have great utilization value during both construction and operation and maintenance. The traditional digital asset management methods are inefficient in managing these digital assets and difficult to meet the requirements of modern project management. Its main defects are as follows:

[0005] ① In the traditional digital asset management method, due to the stage attributes of the project, different subjects are required to be responsible for each stage, and there are inevitably high barriers to information exchange between different subjects, making it very difficult to achieve full-life-cycle digital asset management.

[0006] ② The traditional digital assets are in various forms and large in quantity. Even if the project construction party collects all the digital assets, it is very difficult to truly implement full-life-cycle asset management. The reasons are as follows: on the one hand, the digital assets in each stage form their own loops and are difficult to be associated with other stages; on the other hand, if systematic sorting and classification are to be carried out, it will necessarily consume a huge amount of manpower and material resources.

[0007] The above difficulties have made it basically impossible to achieve digital asset management throughout the entire life cycle for a comprehensive project such as rail transit. As previously mentioned, these digital assets have incomparable importance and economic value, and there is an urgent need to propose solutions. Summary of the Invention

[0008] To address the above-mentioned defects in the prior art, the present invention proposes a method and system for visual management of digital assets throughout the entire life cycle of a rail transit project based on BIM. By using BIM technology, information integration and visualization throughout the entire life cycle are achieved, presenting complex engineering data in an intuitive manner and improving the utilization efficiency of asset data.

[0009] As a first aspect, the technical solution adopted by the present invention is a method for visual management of digital assets of a rail transit project based on BIM. The method includes:

[0010] Based on the same BIM model, digital assets at different stages of the project are collected and entered into the BIM model to form an asset database.

[0011] The engineering three-dimensional model in the BIM model is decomposed into nodes to obtain a component structure tree. The digital assets in the asset database are classified and packaged according to the components to which they belong in the component structure tree to form multiple asset units, and each asset unit is associated with its corresponding component.

[0012] Select a target node component in the BIM model and display the asset unit associated with the target node component.

[0013] Preferably, the association of each asset unit with its corresponding component is specifically:

[0014] Determine the asset number of each asset unit and determine the model number of each component in the engineering three-dimensional model in the BIM model, and associate the asset number of each asset unit with the model number of its corresponding component.

[0015] Preferably, the selection of the target node component in the BIM model is specifically:

[0016] Select the component three-dimensional image of the engineering three-dimensional model corresponding to the target node component in the BIM model; and / or

[0017] All component nodes of the component structure tree are displayed in the BIM model, and the component node corresponding to the target node component in the BIM model is selected.

[0018] Preferably, the selection of the target node component in the BIM model and the display of the asset unit associated with the target node component are specifically:

[0019] All component nodes of the component structure tree are displayed in the BIM model, and each component node of the component structure tree is associated with the corresponding component 3D image in the engineering 3D model; after selecting the target node component in the component structure tree, the component 3D image corresponding to the target node component is displayed, and then the asset unit corresponding to the associated component 3D image is displayed according to the component 3D image.

[0020] Preferably, the association of each component node of the component structure tree with the corresponding component 3D image in the engineering 3D model is specifically as follows:

[0021] Determine the node number of each component node of the component structure tree, and associate the node number of each component node with the model number of the corresponding component 3D image in the engineering 3D model.

[0022] Preferably, the decomposition of the engineering 3D model in the BIM model to obtain the component structure tree is specifically as follows:

[0023] The engineering 3D model in the BIM model is split according to the construction nodes, and N-level components are formed according to the inclusion relationship of the components to obtain the component structure tree;

[0024] Among them, the engineering 3D model includes at least one first-level component, the first-level component includes at least part of the second-level components... The N-level components are the minimum design units.

[0025] Preferably, the collection and entry of digital assets in different stages of the project based on the same BIM model to form an asset database means that the same BIM model is used in different stages of the project, and the digital assets of this stage are entered.

[0026] Preferably, the digital assets in different stages of the project include the corresponding data and materials in the feasibility study stage, exploration and design stage, construction stage and operation and maintenance stage.

[0027] Preferably, the asset unit includes a plurality of asset packages containing different categories of digital assets. When any asset unit is displayed, all the asset packages it contains are displayed; after selecting any one of the asset packages, all the digital assets it contains are displayed; after selecting any one of the digital assets, the information content of the digital asset is displayed.

[0028] The present invention also proposes a digital asset visualization management system for rail transit engineering based on BIM, which adopts the method as described above. The system includes: an engineering 3D modeling module for displaying the 3D model of the project; a database module containing the multi-stage digital assets of the project.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The digital asset management method is visually presented to the user, enabling the user to quickly select the desired information in the model, greatly improving the management efficiency of digital assets;

[0031] 2. Based on the same BIM model, digital assets at each stage are collected, realizing the whole life cycle management of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be described in detail below in conjunction with embodiments and the drawings, where:

[0033] Figure 1 is a schematic diagram of the change of digital assets accumulated based on the same BIM model in an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram showing the basic information of components in the BIM+GIS twin of the track project in an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of the asset unit retrieved and displayed after selecting the target node component in an embodiment of the present invention;

[0036] Figure 4 is Figure 3 a schematic diagram of further retrieving and displaying specific digital assets in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the drawings. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0038] The present invention discloses a digital asset visualization management method for rail transit projects based on BIM. The method includes: based on the same BIM model, collecting digital assets at different stages of the project and inputting them into the BIM model to form an asset database; decomposing the engineering three-dimensional model in the BIM model into nodes to obtain a component structure tree; classifying and packaging the digital assets in the asset database according to the components to which they belong in the component structure tree to form multiple asset units, and associating each asset unit with its corresponding component; selecting a target node component in the BIM model and displaying the asset unit associated with the target node component.

[0039] In a specific embodiment, collecting and inputting digital assets at different stages of a project based on the same BIM model to form an asset database means using the same BIM model at different stages of the project and inputting the digital assets of this stage. The digital assets at different stages of the project include the corresponding data and materials in the feasibility study stage, exploration and design stage, construction stage, and operation and maintenance stage. In this way, the goal of managing the digital assets throughout the entire life cycle of the project can be achieved.

[0040] As an example, in the feasibility study stage, inputting the project's project approval report and project proposal, including project background information such as the reasons, objectives, and significance of the project, into the BIM model allows subsequent personnel to understand the project's origin; inputting basic geographical information such as topographic and geomorphic data (such as contour topographic maps, satellite imagery) and preliminary geological exploration reports (including preliminary information such as soil types and stratigraphic structures) provides a basic reference for project site selection and overall layout; inputting the project's investment estimate report and cost-benefit analysis documents, which record economic analysis materials such as the estimated investment amount and revenue forecast of the project, facilitates cost control and economic evaluation throughout the life cycle; inputting the distribution of surrounding buildings, roads, water and electricity facilities, etc. in the form of drawings or data files into the BIM model helps to consider the mutual influence between the project and the surrounding environment.

[0041] In the exploration and design stage, inputting detailed geotechnical exploration reports and hydrogeological exploration reports, which clarify detailed geological exploration report information such as the mechanical properties of the strata and the groundwater level, provides an accurate basis for foundation design, and inputting into BIM can visually present the impact of geological conditions on the project; inputting design materials such as architectural design drawings (floor plans, sectional views, elevation views), structural design drawings (frame structure, foundation structure drawings, etc.), water supply and drainage design drawings, electrical design drawings, and HVAC design drawings not only achieves three-dimensional visualization but also facilitates collaboration among different disciplines; of course, structural calculation books (such as load calculations, structural internal force analysis, etc.), water supply and drainage hydraulic calculation books, electrical load calculation books, etc. can also be input to record the technical parameters and calculation basis in the design process, facilitating review and subsequent modification; finally, information such as the specifications, performance parameters, and brands of building materials, such as the strength grade of concrete, the model of steel, and the thermal conductivity of thermal insulation materials, can be input to provide data support for material management in the construction and operation and maintenance stages.

[0042] During the construction stage, associating the construction schedule with the BIM model can achieve visual tracking and management of the progress, and promptly detect progress deviations; for documents such as design changes and engineering negotiations occurring during the construction process, record in detail the reasons, content, and impacts of the changes, and update the BIM model to reflect the actual construction situation; collect quality inspection materials such as raw material inspection reports, concealed works acceptance records, and quality inspection and assessment materials for sub - projects and partial projects, and associate them with the corresponding components in the BIM model for easy quality traceability and management; at the same time, also input photos and video materials of the construction site to record key construction nodes, construction techniques, etc., which serve as a true record of the construction process and can also be used for later training and experience summary; it is also possible to input equipment installation materials such as equipment installation instructions, commissioning reports, and equipment parameters, such as the detailed information of equipment like elevators and air - conditioning units, into the BIM model to facilitate equipment management and maintenance during the operation and maintenance stage.

[0043] Finally, during the operation and maintenance stage, promptly collect and input equipment operation data, maintenance records, facility renovation materials, and project usage information.

[0044] It should be noted that the number of digital assets generated in actual projects is huge and cannot be listed one by one. The above description is only exemplary for easy understanding, and the digital assets in this solution are not limited to the above content. Moreover, due to the differences in actual projects, not every project will input the same types of digital assets. That is, in one embodiment, its digital assets may only be some of the categories mentioned in the previous examples.

[0045] In addition, as Figure 1 shown, the cumulative process of digital assets based on the same BIM model is also exhibited, and finally a complete digital asset management model is formed. In the BIM model, the three - dimensional structure of the component can be clearly displayed, while in the design model during the design stage, it mainly contains design attributes, specifically including geometric information (dimensions, specifications, etc.) and non - geometric information (materials, processes, prices, etc.), and the digital assets of the design model are accumulated.

[0046] Entering the construction preparation stage, add construction attributes on the basis of the design model, including environmental information, hydro - geological information, construction organization information, and safety information. Also input WBS decomposition information, inspection lot division information, implanted quality and safety information, and other necessary construction attention information, so as to iterate the design model to form an engineering model, and accumulate the digital assets of the engineering model.

[0047] Entering the construction stage, with further monitoring and dynamic adjustment of the construction site, new information about the actual components can be obtained, specifically including geometric information (actual dimensions, specifications, etc.), non-geometric information (actual materials, processes, etc.), construction parameters (time, personnel, machinery, etc.), quality acceptance, safety status, measurement and payment, project changes, etc. In Figure 1 In the illustrated embodiment, materials can be collected from aspects such as the progress, quality, safety, and cost of the project, and a construction management module can be formed based on these materials. Specifically, relevant documents related to work assignment management, construction log, process inspection and approval, work quantity valuation, safety monitoring, safety control, etc. are collected and entered into the aforementioned engineering model to form a new engineering management model, and the digital assets of the engineering management model are accumulated.

[0048] Finally, entering the operation and maintenance stage, starting from the operating status of the equipment and facilities, an operation and maintenance management module is formed. The materials of this module are collected and entered into the aforementioned engineering management model, thus forming a new operation and maintenance model, accumulating the digital assets of the operation and maintenance model, and forming the aforementioned asset database.

[0049] Of course, since the BIM model has not been formed in the feasibility study stage, the relevant documents formed in the feasibility study stage cannot be entered in a timely manner, but they can be supplemented and entered in the above four stages. It is preferably entered in the design stage.

[0050] In this way, the finally obtained operation and maintenance model contains the digital assets of the entire life cycle of the project, facilitating subsequent operation and management.

[0051] In one embodiment, the engineering three-dimensional model in the BIM model is decomposed into nodes to obtain a component structure tree. Specifically, the engineering three-dimensional model in the BIM model is split according to the construction nodes, and N-level components are formed according to the inclusion relationship of the components to obtain the component structure tree. Among them, the engineering three-dimensional model includes at least one first-level component, and the first-level component includes at least part of the second-level components... The N-level component is the smallest design unit.

[0052] For example, in a bridge traffic project, its three-dimensional model is the entire project, and the first-level components can be divided into multiple sections according to the construction section; each first-level component (section) includes second-level components such as the bridge body, bridge piers, etc.; and so on, each second-level component will include multiple third-level components, which can be beams, plates, columns, etc. ... until the (N-1)-level component contains multiple N-level components, and the N-level components are the smallest design units, such as main bars, stirrups, formwork, etc. Then, according to the total-to-specific relationship of the engineering components, the entire project can be decomposed into a tree-like relationship diagram, that is, the aforementioned component structure tree is obtained. Of course, the establishment of the component structure tree can be decomposed after the three-dimensional model of the BIM model is formed, or it can be decomposed before the BIM model is formed, or as the model is gradually designed, the component structure tree is also gradually improved.

[0053] According to the component structure tree, the digital assets in the asset database need to be classified and packaged to correspond and associate each digital asset with the component to which it belongs, so as to facilitate subsequent retrieval and review. Specifically, all digital assets can be classified once according to the corresponding relationship of the first-level components according to the hierarchical relationship of the component structure tree, that is, the digital assets of each bid section can be separated at this time; then, in each bid section, a secondary classification is performed according to the corresponding relationship of the second-level components, that is, the digital assets in each bid section are further classified and corresponded to specific second-level components; and so on until each digital asset finally corresponds one-to-one with the N-level components, and this correspondence is unique and definite.

[0054] In one embodiment, when digital assets are classified and packaged, multiple asset units are formed. Each asset unit has a one-to-one correspondence with the component to which it belongs. The multiple asset units here are also hierarchically set up in a total-to-score relationship, and the hierarchy is consistent with the hierarchy of the component structure tree. This also ensures that the asset units at each level have a unique and definite correspondence with the components at the same level. Figure 2 The multiple asset units shown in the figure include special plans, work instructions, safety briefings, commencement reports, technical briefings, construction plans, etc.

[0055] In addition, the asset unit includes multiple asset packages containing different categories of digital assets. When any of the asset units is displayed, all of the multiple asset packages it contains are displayed; after selecting any of the asset packages, all of the digital assets it contains are displayed; after selecting any of the digital assets, the information content of the digital asset is displayed.

[0056] Based on the foregoing multiple embodiments, the component structure tree has been decomposed, and all digital assets have also been classified and packaged according to the hierarchical logic of the component structure tree. At this time, by associating the asset units with the components, the purpose of selecting the target node component in the BIM model and displaying the asset units associated with the target node component can be achieved, thus achieving the effect of convenient, intuitive and efficient digital asset management.

[0057] Specifically, in one embodiment, determine the asset number of each of the asset units, determine the model number of each component in the engineering three-dimensional model in the BIM model, and associate the asset number of each asset unit with the model number of its corresponding component. Of course, it can also be that the asset packages included in each asset unit and the specific digital assets included in each asset package are numbered, and the digital unit, asset package, and specific digital assets are respectively associated with their corresponding components one by one.

[0058] In addition, it should be noted that there are multiple ways to select the target node component in the BIM model. In one embodiment, it is to directly select the component three-dimensional image of the engineering three-dimensional model corresponding to the target node component in the BIM model, that is, directly click on the image of the three-dimensional model to select it. At this time, BIM will retrieve and display the associated asset unit, and the operator can further select the asset package in the asset unit and finally view the specific digital assets included in the asset package.

[0059] In another embodiment, it can also be that all component nodes of the component structure tree are directly displayed in the BIM model interface, and the component node corresponding to the target node component in the BIM model is selected. Specifically, that is, a drop-down menu set according to the hierarchy of the component structure tree is added to the interface of the BIM model, and each component node of the last-level drop-down menu corresponds to the smallest design unit in the component structure tree. In this way, the operator can select the target node component by selecting the drop-down menu, and then BIM will retrieve and display the associated asset unit.

[0060] In another embodiment, it can also be a combination of the above two embodiments.

[0061] Furthermore, in order to enable users to view and manage the digital assets of the project more intuitively, in one embodiment, all component nodes of the component structure tree are displayed in the BIM model, and each component node of the component structure tree is associated with the corresponding component three-dimensional image in the engineering three-dimensional model; after selecting the target node component in the component structure tree, the component three-dimensional image associated with the target node component is displayed, and then the asset unit associated with the component three-dimensional image is displayed according to the component three-dimensional image.

[0062] In this embodiment, the node numbers of the component nodes of each component structure tree are determined, and the node numbers of each component node are associated with the model numbers of the corresponding component 3D images in the engineering 3D model. Through the above settings, the component structure tree of the BIM interface is associated with the 3D model, and when either of them is selected, the corresponding asset unit will be displayed, making the management of digital assets more intuitive and clear. There is not only the intuitive feeling of the 3D structure, but also the unique structure nodes can be determined.

[0063] As Figure 3-4 shown, when selecting a beam component, its corresponding asset unit and corresponding 3D image can be viewed. This asset unit contains multiple asset packages such as concrete, steel, and embedded parts, and each asset package contains multiple specific digital assets such as inspection reports and approval forms.

[0064] In a specific embodiment, the component structure tree obtained by the above decomposition is stored in a file in XML format, and each XML file corresponding to a component node contains its unique Global ID; similarly, each component 3D image of the engineering 3D model in BIM is also assigned its unique Global ID; at the same time, each asset unit, asset package, and specific digital asset is also assigned its unique Global ID. When associating the component nodes of the component structure tree, each component 3D image of the 3D model, and the asset unit / asset package / specific digital asset, only their Global IDs need to be associated, such as using the same Global ID.

[0065] As an example, the above embodiment is further described:

[0066] The component structure tree is a hierarchical component tree structure of N levels formed by splitting the engineering 3D model in the BIM model according to construction nodes and based on the inclusion relationship of components. For example, in bridge traffic engineering, the 3D model of the entire project is the starting point. The first-level components may be divided into multiple sections according to the construction section; under each section, the second-level components include bridge bodies, bridge piers, etc.; and so on, until the N-level components of the smallest design unit, such as main reinforcement bars, stirrups, formworks, etc. Through this hierarchical relationship, the composition structure of the engineering components is fully presented, which is an ordered tree-like hierarchical architecture. The component structure tree is stored in a file in XML (Extensible Markup Language) format. XML has good structuring and self-describing properties, and is very suitable for storing this kind of hierarchical data. It can be easily read and parsed by various software and systems, facilitating data management and interaction. In an actual project, this XML file may be stored in the project's database or on the file storage server specified by the project, and the specific location depends on the project's architecture design and data management strategy.

[0067] Since the Global ID is assigned to the XML file corresponding to each component node in the component structure tree, the three-dimensional image of each component in the three-dimensional engineering model in BIM, each asset unit, asset package, and specific digital asset. This ensures that in the entire management system, each key element has a unique identifier. In the development environment of BIM software, when creating or importing a three-dimensional model, a unique Global ID is assigned to the three-dimensional image of each component. This can be achieved by writing code. For example, in the secondary development based on a specific BIM platform, the API provided by the platform is used for operation.

[0068] For digital assets (including asset units, asset packages, and specific digital assets), a Global ID is assigned when they are entered into the system. For example, when uploading digital assets such as construction records and design drawings, the system automatically generates and associates a unique Global ID. In database design, a digital asset table can be created, and a field is specifically used to store the Global ID. When the digital asset changes or needs to be queried, operations are performed through this Global ID.

[0069] Due to the uniqueness of the Global ID, it is like the "ID number" of each element in the system. When operating in the BIM model, such as selecting a certain component, the system first obtains the Global ID corresponding to the component. Because all relevant digital assets and component structure tree nodes are associated with the three-dimensional image of the component through the same Global ID, the system can, based on this unique identifier, find the corresponding asset unit, asset package, and specific digital asset at different data storage locations, such as databases and file servers.

[0070] Of course, in this embodiment, regarding the assignment of the Global ID, an algorithm for generating a unique Global ID can be developed or an existing mature UUID generation scheme can be utilized. According to the regulations, the Global ID is assigned to the XML file nodes of the component structure tree, the component images of the three-dimensional model, and various digital assets. During the assignment process, to ensure the uniqueness and accuracy of the ID, verification can be performed through database constraints or code logic.

[0071] To ensure the accuracy during association, an association table can be established in the database to record the relationships between component structure tree nodes, three-dimensional model components, and digital assets. For example, create an "association table" containing fields such as "Component Global ID", "Three-dimensional Model Global ID", "Asset Unit Global ID", etc., and establish associations by inserting records. At the same time, in the code logic of BIM software and digital asset management systems, these Global IDs are used to achieve data association and invocation.

[0072] In another embodiment, in order to further enhance the intuitiveness of project management, as Figure 2 shown, the GIS system is also combined with the BIM model, thereby creating a digital twin scenario of the geographical environment of the actual project in the BIM model, forming an entity mapping body, so that users can better correspond to the actual environment and be more intuitive.

[0073] Finally, the present invention also discloses a digital asset visualization management system for rail transit projects based on BIM, which adopts the method described in any of the previous embodiments. The system includes an engineering three-dimensional modeling module for displaying a three-dimensional model of the project, and a database module containing multi-stage digital assets of the project.

[0074] In the description of this specification, if terms such as "Embodiment 1", "this embodiment", "in one embodiment", etc. appear, it means that the specific features, structures, materials or characteristics described in connection with this embodiment or example are included in at least one embodiment or example of the invention or the invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0075] In the description of this specification, terms such as "connection", "installation", "fixation", "setting", "having", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0076] In the description of this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0077] The above description of the embodiments is to enable those of ordinary skill in the art to understand and apply the technology of this case. Obviously, those who are familiar with the technology in this field can easily make various modifications to these examples and apply the general principles described herein to other embodiments without creative labor. Therefore, this case is not limited to the above embodiments, and the following modifications should all be within the protection scope of this case: ① A new technical solution implemented based on the technical solution of the present invention and combined with existing common knowledge, and the technical effect produced by this new technical solution does not exceed the technical effect of the present invention; ② An equivalent replacement of some features of the technical solution of the present invention using well-known technologies, and the technical effect produced is the same as the technical effect of the present invention; ③ Expansion based on the technical solution of the present invention, and the substantial content of the expanded technical solution does not exceed the technical solution of the present invention; ④ An equivalent transformation made using the content of the specification and drawings of the present invention, directly or indirectly applied to other related technical fields.

Claims

1. A digital asset visualization management method for rail transit engineering based on BIM, characterized in that, The method includes: Based on the same BIM model, collecting digital assets at different stages of the project and inputting them into the BIM model to form an asset database; Decomposing the engineering 3D model in the BIM model into nodes to obtain a component structure tree; classifying and packaging the digital assets in the asset database according to the components to which they belong in the component structure tree to form multiple asset units, and associating each asset unit with its corresponding component; Selecting a target node component in the BIM model and displaying the asset unit associated with the target node component.

2. The method according to claim 1, characterized in that, The associating each asset unit with its corresponding component specifically includes: Determining the asset number of each asset unit and determining the model number of each component in the engineering 3D model in the BIM model, and associating the asset number of each asset unit with the model number of its corresponding component.

3. The method according to claim 2, wherein The selecting a target node component in the BIM model specifically includes: Selecting the component 3D image of the engineering 3D model corresponding to the target node component in the BIM model; and / or All component nodes of the component structure tree are displayed in the BIM model, and selecting the component node corresponding to the target node component in the BIM model.

4. The method according to claim 2, characterized in that, The selecting a target node component in the BIM model and displaying the asset unit associated with the target node component specifically includes: All component nodes of the component structure tree are displayed in the BIM model, and associating each component node of the component structure tree with the corresponding component 3D image in the engineering 3D model; After selecting a target node component in the component structure tree, displaying the component 3D image associated with the target node component, and then displaying the asset unit associated with the component 3D image.

5. The method according to claim 4, wherein The associating each component node of the component structure tree with the corresponding component 3D image in the engineering 3D model specifically includes: Determining the node number of each component node of the component structure tree, and associating the node number of each component node with the model number of the corresponding component 3D image in the engineering 3D model.

6. The method according to claim 1, wherein The decomposing the engineering 3D model in the BIM model into nodes to obtain a component structure tree specifically includes: Splitting the engineering 3D model in the BIM model according to construction nodes and forming N-level components according to the inclusion relationship of components to obtain the component structure tree; Wherein, the engineering 3D model includes at least one first-level component, the first-level component includes at least part of the second-level components... the N-level components are the smallest design units.

7. The method according to claim 1, wherein The collecting and inputting digital assets at different stages of the project based on the same BIM model to form an asset database means using the same BIM model at different stages of the project and inputting the digital assets of this stage.

8. The method according to claim 7, wherein The digital assets at different stages of the project include the corresponding data and materials in the feasibility study stage, exploration and design stage, construction stage and operation and maintenance stage.

9. The method according to any one of claims 1-8, characterized in that, The asset unit includes multiple asset packages containing different categories of digital assets, and when any one of the asset units is displayed, all the asset packages it contains are displayed; after selecting any one of the asset packages, all the digital assets it contains are displayed; after selecting any one of the digital assets, the information content of the digital asset is displayed.

10. A digital asset visualization management system for rail transit engineering based on BIM, which adopts the method described in any one of claims 1-9, characterized in that, The system includes: An engineering 3D modeling module that displays a 3D model of the project; A database module that contains multi-stage digital assets of the project.

Images