Civil aviation construction project archive management method and system

Abstract

The application discloses a civil aviation construction engineering archive management method and system, and belongs to the technical field of intelligent archive management. The method comprises the following steps: obtaining a BIM model; identifying engineering basic units according to the BIM model, and constructing a basic unit tree with leaf nodes being the engineering basic units; correlating the engineering basic units with correlation according to spatial relations and process relations; matching engineering archives with the engineering basic units and mounting the engineering archives in corresponding engineering basic units in the basic unit tree; and when performing archive inquiry on any engineering basic unit, providing the engineering archives mounted by the engineering basic unit and the engineering archives of the engineering basic units correlated with the engineering basic unit. The civil aviation construction engineering archive management method and system construct a complete basic unit tree through minimization of engineering basic units and correlate the engineering basic units, so that the input and subsequent inquiry of engineering archives are facilitated, and the engineering management efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to intelligent record management technology, specifically to a method and system for managing civil aviation construction project records. Background Technology

[0002] Engineering archives are historical records in various forms, including text, drawings, charts, audio-visual materials, and electronic files, directly generated during engineering construction activities and possessing archival value. Their importance is self-evident. However, in actual construction projects, due to factors such as a shortage of professional data clerks, uneven professional capabilities among personnel, insufficient leadership attention, and high staff turnover, problems frequently arise such as non-standard data entry, omissions or errors in information, extensive modifications or redoing of archived data during data inspection and acceptance, data progress significantly lagging behind actual project progress, and construction records failing to accurately reflect on-site construction activities. Furthermore, when transferring archives for filing, management personnel, unfamiliar with the actual professional situation, cannot accurately assess the completeness and accuracy of the data, and cannot quickly and accurately retrieve the required information when needing to access the archives.

[0003] Meanwhile, civil aviation construction projects, especially airport projects, have long construction cycles, complex professional systems, and numerous participating units. Their construction content typically covers multiple professional fields such as terminal buildings, flight areas, air traffic control systems, baggage handling systems, terminal building low-voltage electrical systems, fuel supply engineering, and municipal supporting projects. They involve dozens of subcontractors specializing in civil engineering, steel structures, curtain walls, electromechanical systems, low-voltage electrical systems, and interior decoration. Construction cycles often last 3 to 5 years, making document management more difficult and complex compared to other civil engineering projects.

[0004] In the prior art, Chinese Patent Application No. 202310631087.1 discloses a method, device, medium, and system for archiving electronic documents in airport construction projects. In the project data management system, the airport construction project is divided into unit sub-projects, and the table styles and sorting are customized. Electronic documents are generated through table filling and approval. In the electronic archive management system, archive classification items are created, and the unit sub-project classification directory is identified from the project data management system to generate a unit project directory. File titles and document titles are intelligently created, and a set of electronic documents under the document titles to be archived is retrieved from the project data management system and automatically sorted, achieving one-click archiving. However, this method struggles to accurately archive complex project documents, making searching difficult. Summary of the Invention

[0005] In order to at least overcome the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a method and system for managing civil aviation construction project archives.

[0006] Firstly, embodiments of this application provide a method for managing civil aviation construction project archives, including:

[0007] Obtain a BIM model of the target airport based on its design data;

[0008] Based on the BIM model, basic engineering units are identified, and a basic unit tree is constructed with leaf nodes representing these basic engineering units; each basic engineering unit is the smallest component unit that is managed independently.

[0009] The engineering basic units with related relationships are associated according to spatial and procedural relationships;

[0010] Match the project file with the project basic unit and mount it in the corresponding project basic unit in the basic unit tree;

[0011] When a file query is performed on any of the aforementioned engineering basic units, the engineering files attached to that engineering basic unit and the engineering files of the engineering basic units associated with that engineering basic unit are provided.

[0012] In one possible implementation, identifying the basic engineering units includes:

[0013] Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones;

[0014] The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

[0015] In one possible implementation, the decomposition to form the engineering basic unit includes:

[0016] Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy;

[0017] The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction.

[0018] The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model.

[0019] The resulting structure after segmentation is used as the basic unit of the project.

[0020] In one possible implementation, the generation of the second decomposition structure includes:

[0021] Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction.

[0022] The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

[0023] In one possible implementation, the segmentation includes:

[0024] The necessary segmentation points are identified based on the attribute information of the component hierarchy in the BIM model; the necessary segmentation points include nodes of the component hierarchy, expansion joint locations, and construction joint locations.

[0025] Obtain the distance between the adjacent necessary dividing points, and divide the adjacent necessary dividing points according to the length specified by the geometric rules to form the engineering basic unit.

[0026] In one possible implementation, associating the basic engineering units includes:

[0027] When making associations based on spatial relationships, an enclosing space is constructed around each engineering basic unit, and engineering basic units whose enclosing spaces intersect are taken as the spatially associated engineering basic units; the size of the enclosing space is determined according to the type of the corresponding engineering basic unit.

[0028] When associating based on process relationships, engineering basic units in the same process form a first process association relationship, engineering basic units in the same process sequence form a second process association relationship along the process sequence direction, and the second process association relationship is used as the superior association relationship of the first process association relationship.

[0029] Secondly, this application also provides a civil aviation construction project file management system, including:

[0030] The acquisition unit is configured to acquire a BIM model of the target airport based on its design data.

[0031] The identification unit is configured to identify the basic engineering units based on the BIM model and construct a basic unit tree with the basic engineering units as leaf nodes; the basic engineering units are the smallest component units that are managed independently.

[0032] The associated unit is configured to associate the engineering basic units that have an associated relationship based on spatial and process relationships;

[0033] The mounting unit is configured to match the project file with the project base unit and mount it to the corresponding project base unit in the base unit tree;

[0034] The query unit is configured to provide the engineering files attached to any of the engineering basic units and the engineering files of the engineering basic units associated with the engineering basic unit when performing a file query on any of the engineering basic units.

[0035] In one possible implementation, the identification unit is further configured as follows:

[0036] Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones;

[0037] The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

[0038] In one possible implementation, the identification unit is further configured as follows:

[0039] Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy;

[0040] The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction.

[0041] The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model.

[0042] The resulting structure after segmentation is used as the basic unit of the project.

[0043] In one possible implementation, the identification unit is further configured as follows:

[0044] Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction.

[0045] The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

[0046] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0047] The present invention relates to a method and system for managing civil aviation construction project archives. By constructing a complete basic unit tree from the minimum basic engineering units and establishing connections between the basic engineering units, it facilitates the entry and subsequent query of project archives, effectively improving the efficiency of project management. Attached Figure Description

[0048] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0049] Figure 1 This is a schematic diagram of the method steps in an embodiment of this application. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0051] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0052] Please refer to the following: Figure 1 This is a flowchart illustrating the civil aviation construction project archive management method provided in this embodiment of the invention. Further, the civil aviation construction project archive management method may specifically include the content described in steps S1-S5.

[0053] S1: Obtain the BIM model of the target airport based on the design data;

[0054] S2: Identify the basic engineering units based on the BIM model, and construct a basic unit tree with leaf nodes of the basic engineering units; the basic engineering units are the smallest component units that are managed independently.

[0055] S3: Associate the engineering basic units that have related relationships based on spatial relationships and process relationships;

[0056] S4: Match the project file with the project basic unit and mount it in the corresponding project basic unit in the basic unit tree;

[0057] S5: When performing a file query on any of the aforementioned engineering basic units, provide the engineering files attached to the engineering basic unit and the engineering files of the engineering basic units associated with the engineering basic unit.

[0058] When implementing the embodiments of this application, it is necessary to first obtain a BIM model based on design data. The BIM model can well display the overall design of the target airport, and it is already a relatively mature technology. This application embodiment will not impose any limitations. However, the BIM model generated based on design data is often not very detailed and contains many large components. These components will be constructed in batches and sections during construction. If the components of the BIM model are directly used for project file management, some large components may be associated with a large number of files, making it difficult to search. In the prior art, there is a technology for file management using BIM models and related GIS. The reason is that the BIM model itself can be used as a digital twin model to map files in file management. However, the lack of detail in the components makes it difficult to search for details.

[0059] In this application embodiment, a minimum component unit that can be managed independently is proposed, namely the engineering basic unit. It needs to be obtained by segmenting the large components in the BIM model through identification. When the engineering basic unit is used as the bottom layer of the basic unit tree, the engineering files corresponding to each engineering basic unit can be queried independently. This facilitates access and also makes it convenient for construction supervisors and acceptance parties to upload files, thereby enabling refined management.

[0060] In this embodiment, there are also connections between basic engineering units. This is because, unlike ordinary engineering file management, airport construction involves numerous construction units and professional systems. A basic engineering unit can easily become associated with other basic engineering units, and these connections can affect the construction process of different basic engineering units. Even connections that are not easily observed visually can affect subsequent construction. For example, when building baggage handling equipment above a floor slab and structural beams below, the connection may seem weak, but there is actually a deep relationship between the two units. This involves the mutual influence of related embedded parts, load transfer, etc. During acceptance and traceability, they must be tested together for correlation. Therefore, this embodiment requires correlation through two dimensions: spatial relationship and procedural relationship. The spatial relationship characterizes the spatial scale influence of two basic engineering units, while the procedural relationship expresses the sequential relationship of different basic engineering units in a procedural chain.

[0061] In this embodiment, when uploading project files, the project files need to be matched with the corresponding basic project units and then mounted in the basic project units of the corresponding basic unit tree. This can be achieved through basic project unit encoding, which is a mature existing technology given the basic unit tree, and this application does not impose any limitations on it. Because this application adopts the above technical solution, file queries are performed based on basic project units. Not only can project files within a specific basic project unit be queried, but project files of associated basic project units can also be retrieved, thereby effectively improving the efficiency of project file retrieval, breaking down file silos, and realizing cross-unit file linkage based on project logic.

[0062] In one possible implementation, identifying the basic engineering units includes:

[0063] Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones;

[0064] The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

[0065] In implementing this application's embodiments, when dividing the basic engineering units, it is necessary to first determine which components in the corresponding BIM model need to be decomposed. This relies on three decomposition rules from the decomposition rule base. Among these, semantic and logical rules are rigid rules, depending on the division rules in relevant specifications, such as the division rules related to sections, items, and inspection batches. Logical rules, on the other hand, are based on the construction process flow or structural stress zoning, such as dividing before installation or dividing on both sides of the post-cast strip. Geometric rules provide different physical size thresholds for different types of components, which are often used to reflect the possible progress scales of construction.

[0066] In one possible implementation, the decomposition to form the engineering basic unit includes:

[0067] Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy;

[0068] The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction.

[0069] The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model.

[0070] The resulting structure after segmentation is used as the basic unit of the project.

[0071] In the implementation of this application embodiment, for rigid rules such as semantic rules and logical rules, the first decomposition structure can be directly divided, which only needs to meet the requirements of semantic rules and logical rules; however, when extracting the second decomposition structure, there is no requirement for complete rigidity, so it is necessary to determine whether the size of the component meets the corresponding size requirements from the geometric principal direction, and then determine whether it needs to be divided; when dividing, the cutting point needs to be attached to the network line and / or component node to facilitate the formation of a complete cutting structure, so that there are no areas that have not formed engineering basic units after the cutting is completed.

[0072] In one possible implementation, the generation of the second decomposition structure includes:

[0073] Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction.

[0074] The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

[0075] In the implementation of this application, the determination of the geometric principal direction adopts a method using multiple coordinate points of the component hierarchy structure. These coordinate points can be nodes of the component or points evenly distributed on the surface of the component; this application does not impose any limitations. Once the geometric principal direction is determined, the determination of the second decomposition structure needs to be performed based on the projection length of the component hierarchy structure along the geometric principal direction.

[0076] In one possible implementation, the segmentation includes:

[0077] The necessary segmentation points are identified based on the attribute information of the component hierarchy in the BIM model; the necessary segmentation points include nodes of the component hierarchy, expansion joint locations, and construction joint locations.

[0078] Obtain the distance between the adjacent necessary dividing points, and divide the adjacent necessary dividing points according to the length specified by the geometric rules to form the engineering basic unit.

[0079] In the implementation of this application embodiment, the component hierarchical structure in the BIM model will also contain some attribute information, such as the location of expansion joints, which are points that need to be divided. Therefore, these points need to be marked and the distance between the points that must be divided needs to be considered. When the distance exceeds the length specified by the geometric rules, the division is carried out. The specific division can be carried out by equal division or by searching for division points within the range of the points that must be divided. This application embodiment does not impose any limitations.

[0080] In one possible implementation, associating the basic engineering units includes:

[0081] When making associations based on spatial relationships, an enclosing space is constructed around each engineering basic unit, and engineering basic units whose enclosing spaces intersect are taken as the spatially associated engineering basic units; the size of the enclosing space is determined according to the type of the corresponding engineering basic unit.

[0082] When associating based on process relationships, engineering basic units in the same process form a first process association relationship, engineering basic units in the same process sequence form a second process association relationship along the process sequence direction, and the second process association relationship is used as the superior association relationship of the first process association relationship.

[0083] In implementing this application's embodiments, when associating based on spatial relationships, it is necessary to select and construct an appropriate enclosing space according to the different types of engineering basic units. This enclosing space needs to encompass all engineering basic units and is generally presented in the form of a cuboid. Engineering basic units within this coverage area are generally considered to be mutually influential and are thus associated. When associating based on process relationships, each process sequence needs to be listed first. Different engineering basic units may belong to the same step within the same process sequence, so they must be associated. Furthermore, units within the same process sequence must also be associated due to construction sequence requirements.

[0084] Based on the same inventive concept, this application also provides a civil aviation construction project file management system, including:

[0085] The acquisition unit is configured to acquire a BIM model of the target airport based on its design data.

[0086] The identification unit is configured to identify the basic engineering units based on the BIM model and construct a basic unit tree with the basic engineering units as leaf nodes; the basic engineering units are the smallest component units that are managed independently.

[0087] The associated unit is configured to associate the engineering basic units that have an associated relationship based on spatial and process relationships;

[0088] The mounting unit is configured to match the project file with the project base unit and mount it to the corresponding project base unit in the base unit tree;

[0089] The query unit is configured to provide the engineering files attached to any of the engineering basic units and the engineering files of the engineering basic units associated with the engineering basic unit when performing a file query on any of the engineering basic units.

[0090] In one possible implementation, the identification unit is further configured as follows:

[0091] Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones;

[0092] The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

[0093] In one possible implementation, the identification unit is further configured as follows:

[0094] Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy;

[0095] The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction.

[0096] The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model.

[0097] The resulting structure after segmentation is used as the basic unit of the project.

[0098] In one possible implementation, the identification unit is further configured as follows:

[0099] Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction.

[0100] The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

[0101] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0102] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, or may be electrical, mechanical or other forms of connection.

[0103] The units described as separate components may or may not be physically separate. As will be apparent to those skilled in the art, the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0104] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0105] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or grid device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for managing civil aviation construction project archives, characterized in that, include: Obtain a BIM model of the target airport based on its design data; Based on the BIM model, basic engineering units are identified, and a basic unit tree with leaf nodes representing the basic engineering units is constructed. The basic engineering unit is the smallest component unit that is managed independently; The engineering basic units with related relationships are associated according to spatial and procedural relationships; Match the project file with the project basic unit and mount it in the corresponding project basic unit in the basic unit tree; When a file query is performed on any of the aforementioned engineering basic units, the engineering files attached to that engineering basic unit and the engineering files of the engineering basic units associated with that engineering basic unit are provided.

2. The method for managing civil aviation construction project archives according to claim 1, characterized in that, The basic engineering units identified include: Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones; The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

3. The method for managing civil aviation construction project archives according to claim 2, characterized in that, The engineering basic unit is formed by decomposition as follows: Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy; The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction. The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model. The resulting structure after segmentation is used as the basic unit of the project.

4. The method for managing civil aviation construction project archives according to claim 3, characterized in that, The generation of the second decomposition structure includes: Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction. The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

5. The method for managing civil aviation construction project archives according to claim 3, characterized in that, The process of segmentation includes: The necessary segmentation points are identified based on the attribute information of the component hierarchy in the BIM model; the necessary segmentation points include nodes of the component hierarchy, expansion joint locations, and construction joint locations. Obtain the distance between the adjacent necessary dividing points, and divide the adjacent necessary dividing points according to the length specified by the geometric rules to form the engineering basic unit.

6. The method for managing civil aviation construction project archives according to claim 2, characterized in that, The association of basic engineering units includes: When making associations based on spatial relationships, an enclosing space is constructed around each engineering basic unit, and engineering basic units whose enclosing spaces intersect are taken as the spatially associated engineering basic units; the size of the enclosing space is determined according to the type of the corresponding engineering basic unit. When associating based on process relationships, engineering basic units in the same process form a first process association relationship, engineering basic units in the same process sequence form a second process association relationship along the process sequence direction, and the second process association relationship is used as the superior association relationship of the first process association relationship.

7. A civil aviation construction project archive management system, characterized in that, include: The acquisition unit is configured to acquire a BIM model of the target airport based on its design data. The identification unit is configured to identify the basic engineering units based on the BIM model and construct a basic unit tree with the basic engineering units as leaf nodes. The basic engineering unit is the smallest component unit that is managed independently; The associated unit is configured to associate the engineering basic units that have an associated relationship based on spatial and process relationships; The mounting unit is configured to match the project file with the project base unit and mount it to the corresponding project base unit in the base unit tree; The query unit is configured to provide the engineering files attached to any of the engineering basic units and the engineering files of the engineering basic units associated with the engineering basic unit when performing a file query on any of the engineering basic units.

8. The civil aviation construction project archive management system according to claim 7, characterized in that, The identification unit is further configured to: Obtain decomposition rules from a preset decomposition rule library; the decomposition rules include geometric rules, semantic rules, and logical rules; the geometric rules are the physical dimension rules of the engineering basic unit; the semantic rules are the division rules of sections, items, and inspection batches in the specifications; the logical rules are the division rules of construction process flow and / or structural stress zones; The component hierarchy in the BIM model is decomposed according to the decomposition rules to form the basic engineering unit.

9. The civil aviation construction project archive management system according to claim 8, characterized in that, The identification unit is further configured to: Based on the semantic rules and the logical rules, extract the first decomposition structure that must be segmented from the component hierarchy; The non-first decomposition structure in the component hierarchy is determined by geometric principal direction, and the second decomposition structure that must be divided in the non-first decomposition structure is extracted according to the size length and geometric rules of the geometric principal direction. The first decomposition structure and the second decomposition structure are segmented, and the segmentation points are snapped to the nearest network lines and / or component nodes in the BIM model. The resulting structure after segmentation is used as the basic unit of the project.

10. The civil aviation construction project archive management system according to claim 9, characterized in that, The identification unit is further configured to: Multiple coordinate points of the component hierarchy are obtained to form a coordinate point set, and the direction of the eigenvector corresponding to the largest eigenvalue of the covariance matrix of the coordinate point set is calculated as the geometric principal direction. The component hierarchical structure is projected along the main geometric direction to form a projection length, and the component hierarchical structure is determined to be a second decomposition structure when the projection length is greater than the length specified by the geometric rules.

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