A method and system for delivering BIM models for undersea tunnel projects

Abstract

The present invention relates to a method and system for delivering a BIM model for an undersea tunnel project, and belongs to the field of digital engineering technology for undersea tunnel projects. The method for delivering a BIM model for an undersea tunnel project comprises the following steps: S1, determining the delivery standard; S2, splitting each professional model; S3, encoding the split models; S4, lightweight processing; S5, integrating the lightweight processed models; S6, encoding the document data, and establishing a bidirectional index relationship between the document and the model; S7, formulating corresponding roles and operating permissions for different units and positions, and providing corresponding delivery results; and providing specific algorithm steps for step S6. The method ensures the accuracy and completeness of data association by establishing a bidirectional index relationship between documents and models, and at the same time significantly reduces human errors through an automated hooking and error reporting mechanism, thereby improving the reliability of delivery as a whole.

Description

Technical Field

[0001] The present invention belongs to the technical field of digital engineering of submarine tunnel projects, and in particular relates to a method and system for delivering a BIM model of a submarine tunnel project. Background Art

[0002] At present, three-dimensional digital design has become the mainstream, and the requirements for the quality of three-dimensional model data are getting higher and higher. The application of BIM technology system has greatly accelerated the digitalization capabilities of various professions. However, how to form a three-dimensional digital overall delivery of model data (geometric information), model attributes (non-geometric information) and their associated data (unstructured documents) has become a difficulty for design companies.

[0003] In the prior art, Chinese invention patent application CN118194411A discloses a BIM-based digital completion delivery method for sports stadium projects. In this method, a split-screen display is used for synchronous browsing and review to check the consistency of models and drawings. However, the model of the undersea tunnel project is large in size and complex in structure, and the manual review workload is large and prone to errors.

[0004] Therefore, how to provide a BIM model delivery method suitable for undersea tunnel projects is a technical problem that urgently needs to be solved. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a method and system for delivering a BIM model for an undersea tunnel project. By establishing a bidirectional index relationship between documents and models, the accuracy and completeness of data associations are ensured. At the same time, through an automated hookup and error reporting mechanism, human errors are significantly reduced, thereby improving the overall reliability of delivery.

[0006] The present invention provides a method for delivering a BIM model of a submarine tunnel project, comprising the following steps:

[0007] S1, the deliverer communicates with the deliveree on delivery requirements and determines the delivery standards;

[0008] S2, split each professional model according to the model splitting rules of the undersea tunnel project;

[0009] S3, encode the split model according to the coding rules of the undersea tunnel project and import the model into the delivery platform;

[0010] S4, lightweight processing of the model after importing into the delivery platform;

[0011] S5, integrate the lightweight models to form an overall BIM model, verify whether there are any problems with the overall BIM model, and issue alarms and repair the models or model data with problems;

[0012] S6, encode the document data, the encoding of the document data corresponds to the model encoding, import the document data into the delivery platform, match the document with the model, and establish a bidirectional index relationship between the document and the model;

[0013] S7, formulate corresponding roles and operation permissions for different units and positions, and provide corresponding deliverables according to the units and positions of the deliverees;

[0014] Wherein, step S6 further comprises:

[0015] S601, parsing the key-value pairs of all components in the model, extracting the code of the model to which each component belongs and the component ID, and forming a corresponding relationship table between the model code and the component ID;

[0016] S602, parsing the document coding, combining the coding of the model and the document, formulating a matching catalog file of the document, the model and the component, and importing it into the delivery platform;

[0017] S603, establishing a matching rule between the directory file and the model and component, and establishing a matching rule between the directory file and the document;

[0018] S604, searching for matching items of each entry in the matching directory file with the model, component, and document respectively according to the matching rule, and linking the model and component matching items and the document matching items corresponding to the same entry in the matching directory file and establishing a direct link relationship;

[0019] S605, traverse the attachment relationship between each entry in the matching directory file and the document, model and component, issue a failure report for the entry with an incorrect attachment relationship or attachment failure, and give modification suggestions.

[0020] This technical solution ensures the accuracy and completeness of data associations by establishing a bidirectional index relationship between documents and models. At the same time, through automated hooking and error reporting mechanisms, it significantly reduces human errors and improves the overall reliability of delivery.

[0021] In some embodiments, step S6 further includes:

[0022] S606, the user manually determines and modifies the attachment relationship of the failed item according to the modification suggestion, and returns to step S603 after the modification until all attachments are successful.

[0023] In some of the embodiments, in step S602, the method for parsing the document code includes: using OCR technology to scan and recognize document data to obtain the document code.

[0024] This technical solution can quickly and accurately extract coding information from a large number of documents through OCR technology, reducing the errors and time costs of manual operations.

[0025] In some of the embodiments, in step S3, the coding rules of the undersea tunnel project are encoded according to the classification level of the undersea tunnel project, including four levels of coding, wherein the first-level coding is compiled according to the professional classification of the undersea tunnel project, the second-level coding is compiled according to the sub-items of the undersea tunnel project, the third-level coding is compiled according to the location of the model, and the fourth-level coding is an automatically generated model serial number.

[0026] This technical solution provides a structured framework for the model through a four-level coding structure, which can clearly reflect the relationship and hierarchy between data, making the organization and storage of data more orderly.

[0027] In some of the embodiments, in step S5, when integrating the lightweight models, a shared coordinate method is used to integrate the models to the correct position.

[0028] This technical solution ensures that each model is accurately aligned and integrated in a unified coordinate system through shared coordinates, reduces position errors, and ensures the overall consistency and accuracy of the model.

[0029] In some of the embodiments, the method of integrating each model into the correct position by using shared coordinates includes: establishing a project BIM template file, importing the project general plan into the BIM template file, defining the project base point and measurement point and inputting the geodetic coordinate information as the main file, loading each model into the main file in the form of a link, and after the position is aligned, publishing the coordinates to the link file, and automatically integrating after the coordinate acquisition is completed.

[0030] In some of the embodiments, in step S7, the deliverables may be displayed via a Web terminal.

[0031] Based on the above-mentioned method for delivering a BIM model for a submarine tunnel project, the present invention further provides a system for delivering a BIM model for a submarine tunnel project, which is used to implement the above-mentioned method for delivering a BIM model for a submarine tunnel project, comprising:

[0032] Lightweight unit, used to lightweight the model after it is imported into the delivery platform;

[0033] The integration unit is connected to the lightweight unit for integrating the lightweighted model to form an overall BIM model, verifying whether there are any problems with the overall BIM model, and providing an alarm to repair the model or model data with problems.

[0034] A parsing unit, which is in communication with the integration unit, is used to parse the key-value pairs of the components in the model, extract the code of the model to which each component belongs and the component ID, and is also used to parse the document code;

[0035] A matching unit, which is in communication with the parsing unit and is used to match the document with the model and establish a bidirectional index relationship between the document and the model;

[0036] The registration unit is used to register the corresponding roles of different units and positions, and set the operation permissions of the corresponding roles according to the registration information.

[0037] This technical solution can significantly improve the efficiency and accuracy of BIM model delivery by integrating multiple units.

[0038] In some of the embodiments, the system for delivering the BIM model of the undersea tunnel project also includes an encoding unit, which is communicatively connected to the parsing unit and the matching unit, respectively, and is used to encode the split model and document data according to the encoding rules of the undersea tunnel project.

[0039] In some of the embodiments, the system for delivering the BIM model of the undersea tunnel project also includes a visualization unit, which is respectively communicated with the lightweight unit, the integration unit, the parsing unit, the matching unit, and the registration unit, and is used to display the user's operations on the system for delivering the BIM model of the undersea tunnel project on the Web.

[0040] Based on the above scheme, the method and system for delivering the BIM model of the undersea tunnel project in the embodiment of the present invention can effectively handle the complex model structure of the undersea tunnel project through detailed model splitting and coding rules, and reduce the workload and error rate of manual review. Lightweight processing and integration steps ensure the quality and consistency of model data. The establishment of a bidirectional index relationship between documents and models ensures the accuracy and completeness of data associations. At the same time, through the automated hooking and error reporting mechanism, human errors are significantly reduced, and the reliability of delivery is improved as a whole. At the same time, the roles and operating permissions formulated for different units and positions improve the security and accuracy of the delivery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0042] Figure 1 A flow chart of a method for delivering a BIM model for an undersea tunnel project of the present invention;

[0043] Figure 2This is a flow chart of step S6 of the method for delivering a BIM model for an undersea tunnel project in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] like Figure 1 As shown, in one embodiment of the method and system for delivering a BIM model for an undersea tunnel project of the present invention, the method for delivering a BIM model for an undersea tunnel project includes the following steps.

[0046] S1, the deliverer communicates with the deliveree on delivery requirements and determines the delivery standards;

[0047] In this step, through clear communication and standardized delivery requirements, we ensure that both parties have consistent expectations and requirements for the project, reducing rework and communication costs caused by unclear requirements in the later stage.

[0048] S2, split each professional model according to the model splitting rules of the undersea tunnel project;

[0049] In this step, model splitting enables the complex undersea tunnel project to be managed in stages, facilitating the processing and review of each professional model and reducing the complexity and difficulty of data processing.

[0050] S3, encode the split model according to the coding rules of the undersea tunnel project and import the model into the delivery platform;

[0051] In this step, unified coding rules are used to ensure the uniqueness and traceability of each model. After being imported into the delivery platform, data integration and management can be carried out conveniently and quickly, thereby improving delivery efficiency.

[0052] S4, lightweight processing of the model after importing into the delivery platform;

[0053] In this step, lightweight processing can reduce the complexity and data volume of the model, facilitating efficient operation and operation on the delivery platform, while reducing the consumption of storage and computing resources.

[0054] S5, integrate the lightweight models to form an overall BIM model, verify whether there are any problems with the overall BIM model, and issue alarms and repair the models or model data with problems;

[0055] In this step, the overall BIM model integration ensures the consistency and integrity of different professional data. The automated verification and alarm functions can quickly identify and solve potential problems, avoid human errors, and improve the reliability of the model.

[0056] S6, encode the document data, the encoding of the document data corresponds to the model encoding, import the document data into the delivery platform, match the document with the model, and establish a bidirectional index relationship between the document and the model;

[0057] In this step, the bidirectional index relationship between documents and models realizes effective association and fast query between data, improves the efficiency of information retrieval, and makes the management of document and model data more convenient and efficient.

[0058] S7, formulate corresponding roles and operation permissions for different units and positions, and provide corresponding deliverables according to the units and positions of the deliverees;

[0059] In this step, different roles and operating permissions are allocated to ensure the security and confidentiality of the data. At the same time, customized delivery results are provided according to specific needs, which improves the targetedness and effectiveness of delivery.

[0060] Among them, Figure 2 As shown, step S6 further includes:

[0061] S601, parsing the key-value pairs of all components in the model, extracting the code of the model to which each component belongs and the component ID, and forming a corresponding relationship table between the model code and the component ID;

[0062] S602, parsing the document coding, combining the coding of the model and the document, formulating a matching catalog file of the document, the model and the component, and importing it into the delivery platform;

[0063] S603, establishing a matching rule between the directory file and the model and component, and establishing a matching rule between the directory file and the document;

[0064] S604, searching for matching items of each entry in the matching directory file with the model, component, and document respectively according to the matching rule, and linking the model and component matching items and the document matching items corresponding to the same entry in the matching directory file and establishing a direct link relationship;

[0065] S605, traverse the attachment relationship between each entry in the matching directory file and the document, model and component, issue a failure report for the entry with an incorrect attachment relationship or attachment failure, and give modification suggestions.

[0066] In the above exemplary embodiment, through detailed model splitting and coding rules, the method can effectively handle the complex model structure of the undersea tunnel project and reduce the workload and error rate of manual review. Lightweight processing and integration steps ensure the quality and consistency of model data. The establishment of a bidirectional index relationship between documents and models ensures the accuracy and completeness of data associations. At the same time, through the automated hooking and error reporting mechanism, human errors are significantly reduced, and the reliability of delivery is improved overall. At the same time, the roles and operating permissions formulated for different units and positions improve the security and accuracy of the delivery process.

[0067] In some embodiments, step S1 also includes: coordinating the BIM delivery standards for the entire life cycle of the construction-management-operation project, the delivery standards include defining model accuracy, model splitting rules, model classification, model encoding rules and document encoding rules, model-carrying data types, data exchange formats, model integration methods, etc.; wherein, model accuracy is defined as LOD500.

[0068] It should be noted that the BIM model of the undersea tunnel project includes: submarine foundation, immersed tube tunnel, protective structure, buried tunnel section, road pavement, breakwater, equipment room, pump room, traffic safety facilities, power supply and distribution facilities, lighting facilities, water supply and drainage facilities, ventilation and air-conditioning facilities, fire-fighting facilities, and comprehensive monitoring facilities; the minimum model unit depth of civil facilities takes the immersed tube tunnel as an example, including the main structure, pipe joints, waterproof and water-stopping structures, fire-proof structures, decorative structures, backfill and protection, reserved openings, and embedded parts; the minimum model unit depth of equipment and facilities takes ventilation and air-conditioning facilities as an example, including fans, air ducts, air valves, control boxes, air-conditioning indoor units, outdoor units, and air-conditioning ducts. They all need to be created in the form of family files and distinguished by defining colors. The external dimensions of the equipment model are consistent with the actual ones.

[0069] In some embodiments, the model splitting rules in step S2 include: splitting the project file according to the pipe segment, splitting the project file according to the pile number for the submarine foundation, buried tunnel, road surface and traffic safety facilities, ensuring that each section does not exceed 500m, and ensuring the model loading and response speed. Since the equipment room and pump room are not large single buildings, each is split into a project file, and the equipment and facilities are split according to the specifications of the civil construction facilities to which they belong and are split according to the profession. Different professions and systems are distinguished by different colors through filters, and the color configuration standard of the entire project is unified. By splitting the BIM model of the undersea tunnel project according to the BIM model content of the undersea tunnel project, it can ensure that the models of large volumes and complex structures are more efficient and smooth during processing and review, and effectively improve the loading and response speed of the BIM model in complex projects.

[0070] In some embodiments, in step S4, the lightweight model is exported to .pak format.

[0071] In some embodiments, Figure 2 As shown, step S6 also includes:

[0072] S606, the user manually determines and modifies the attachment relationship of the failed item according to the modification suggestion, and returns to step S603 after the modification until all attachments are successful.

[0073] In some embodiments, in step S602, the method for parsing the document code includes: using OCR technology to scan and identify the document data to obtain the document code. OCR technology can quickly and accurately extract code information from a large number of documents, reducing the error and time cost of manual operation, thereby ensuring the accurate matching of documents and BIM model data, enhancing the automation and intelligence level of the delivery process, and improving the efficiency of the overall workflow.

[0074] Furthermore, the document coding rules are based on the project division plan. The document coding can reflect the profession, region, location and pile number through a combination of letters and numbers. All document materials are uploaded in .pdf or .jpeg format after adding codes in the specified locations. The document materials are scanned using OCR technology to read the document code and document name.

[0075] It should be noted that the documentary materials include project completion drawings, quality inspection materials, test materials, scheme materials and physical photos of equipment and facilities.

[0076] In some embodiments, in step S3, the coding rules of the submarine tunnel project are coded according to the classification level of the submarine tunnel project, including four levels of coding, wherein the first level coding is compiled according to the professional classification of the submarine tunnel project, the second level coding is compiled according to the sub-item division of the submarine tunnel project, the third level coding is compiled according to the location of the model, and the fourth level coding is automatically generated as a model serial number. Through the four-level coding structure, a structured framework is provided for the model, which can clearly reflect the relationship and hierarchy between the data, making the organization and storage of the data more orderly. When processing large-scale models of submarine tunnels, the models that need to be obtained in the subsequent operation are professional and large in volume. The four-level coding can divide the data into smaller, more manageable parts, and can realize the unique identity ID of a single model.

[0077] Furthermore, the professional classification of the undersea tunnel project in the first-level coding includes six major categories: site, equipment and facilities, cables and cable protection, piping system, instrumentation, and duct system. Each major category can be divided into four levels as needed, for example, instrumentation-meter-liquid level sensor-ultrasonic level meter; the sub-item division in the second-level coding can be divided according to the sub-item division plan of the undersea tunnel project; the location of the model in the third-level coding can be encoded according to the model splitting principle in step S2, and the area and position to which it belongs can be quickly matched when the model data is generated, and the layer number and room number of the model can be quickly located for the equipment room and pump room; the serial number of the model in the fourth-level coding is automatically generated according to the order of the model.

[0078] In some embodiments, the preset coding and model classification table data fields are stored in the server local database management system SQLite, and the corresponding parameters and parameter values ​​in the database are obtained through the data table and element category name selected by the user, and the corresponding elements are filtered in Revit.

[0079] In some embodiments, in step S5, when integrating the lightweight models, the shared coordinates are used to integrate the models to the correct positions. The shared coordinates ensure that the models are accurately aligned and integrated in a unified coordinate system, reduce position errors, ensure the overall consistency and accuracy of the models, and improve the efficiency of project collaboration.

[0080] In some embodiments, the method of integrating each model into the correct position by using shared coordinates includes: establishing a project BIM template file, importing the project master plan into the BIM template file, defining the project base point and measurement point and inputting the geodetic coordinate information as the main file, loading each model into the main file in the form of a link, and after the position is aligned, publishing the coordinates to the link file, and automatically integrating after the coordinate acquisition is completed.

[0081] It should be noted that if the project file is used as the main file, when linking the template file, the location and climate require the coordinates of the template file.

[0082] In some embodiments, in step S7, the deliverables may be displayed via a Web terminal. It should be noted that the display on the Web terminal may set a viewing angle and a roaming path, and may enable fast switching of viewing angles.

[0083] In some embodiments, the management and security control of permissions can define different roles and permissions for the operating unit, construction unit, design unit, supervision unit and construction unit respectively, and allocate operational permissions for model modification, data management and information management according to the roles.

[0084] In some embodiments, each model includes the component data, namely the model data. The model data runs through the entire process of design, procurement, and construction, including but not limited to static data such as coding information, design parameters, construction data, product parameters, model specifications, manufacturer information, installation time, installation unit, instructions for use, maintenance unit, maintenance information, etc. It also includes dynamic data such as reserved operating parameters and field positions of alarm records. The model data can be called by the maintenance system through the interface.

[0085] Based on the above-mentioned method for delivering a BIM model for a submarine tunnel project, the present invention further provides a system for delivering a BIM model for a submarine tunnel project, which is used to implement the above-mentioned method for delivering a BIM model for a submarine tunnel project, comprising:

[0086] Lightweight unit, used to lightweight the model after it is imported into the delivery platform;

[0087] The integration unit is connected to the lightweight unit for integrating the lightweighted model to form an overall BIM model, verifying whether there are any problems with the overall BIM model, and providing an alarm to repair the model or model data with problems.

[0088] A parsing unit, which is in communication with the integration unit, is used to parse the key-value pairs of the components in the model, extract the code of the model to which each component belongs and the component ID, and is also used to parse the document code;

[0089] A matching unit, which is in communication with the parsing unit and is used to match the document with the model and establish a bidirectional index relationship between the document and the model;

[0090] The registration unit is used to register the corresponding roles of different units and positions, and set the operation permissions of the corresponding roles according to the registration information.

[0091] In the above-mentioned schematic embodiment, the system for delivering the BIM model of the undersea tunnel project can significantly improve the efficiency and accuracy of BIM model delivery by integrating multiple units; specifically, the lightweight unit reduces the complexity of the model and ensures the efficient operation of the platform. The integration unit can not only integrate the lightweight model to form an overall BIM model, but also has problem detection and alarm repair functions, which improves the reliability of the model. The parsing unit realizes accurate data extraction and management by parsing the model and document encoding. The matching unit establishes a bidirectional index relationship between the document and the model to facilitate information retrieval and association. The registration unit ensures that the operating permissions of different roles are set reasonably, ensuring the security and operability of the system. In summary, while improving the efficiency of BIM model delivery, the system also greatly improves the accuracy and security of data management.

[0092] In some embodiments, the system for delivering the BIM model of the undersea tunnel project also includes a coding unit, which is communicatively connected to the parsing unit and the matching unit, respectively, and is used to encode the split model and document data according to the coding rules of the undersea tunnel project.

[0093] In some embodiments, the system for delivering the BIM model of the undersea tunnel project also includes a visualization unit, which is respectively communicated with the lightweight unit, the integration unit, the parsing unit, the matching unit, and the registration unit, and is used to display the user's operations on the system for delivering the BIM model of the undersea tunnel project on the Web.

[0094] Through the description of multiple embodiments of the method and system for delivering a BIM model for a subsea tunnel project of the present invention, it can be seen that the method and system embodiments for delivering a BIM model for a subsea tunnel project of the present invention have at least one or more of the following advantages:

[0095] 1. The method for delivering a BIM model for an undersea tunnel project provided by the present invention can effectively handle the complex model structure of an undersea tunnel project through detailed model splitting and coding rules, and reduce the workload and error rate of manual review;

[0096] 2. The method for delivering the BIM model of the undersea tunnel project provided by the present invention establishes a bidirectional index relationship between the document and the model, thereby ensuring the accuracy and completeness of the data association. At the same time, through the automated hooking and error reporting mechanism, human errors are significantly reduced, thereby improving the reliability of delivery as a whole.

[0097] 3. The system for delivering BIM models for undersea tunnel projects provided by the present invention can significantly improve the efficiency and accuracy of BIM model delivery by integrating multiple units; specifically, the lightweight unit reduces the complexity of the model and ensures the efficient operation of the platform; the integration unit can not only integrate the lightweight model to form an overall BIM model, but also has problem detection and alarm repair functions, thereby improving the reliability of the model; the parsing unit realizes accurate data extraction and management by parsing the model and document encoding; the matching unit establishes a bidirectional index relationship between the document and the model, which is convenient for information retrieval and association; the registration unit ensures that the operating authority settings of different roles are reasonable, thereby ensuring the security and operability of the system.

[0098] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0099] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for delivering a BIM model for an undersea tunnel project, characterized in that: The following steps are involved: S1, the deliverer communicates with the deliveree on delivery requirements and determines the delivery standards; S2, split each professional model according to the model splitting rules of the undersea tunnel project; S3, encode the split model according to the coding rules of the undersea tunnel project and import the model into the delivery platform; S4, lightweight processing of the model after importing into the delivery platform; S5, integrate the lightweight models to form an overall BIM model, verify whether there are any problems with the overall BIM model, and issue alarms and repair the models or model data with problems; S6, encode the document data, the encoding of the document data corresponds to the model encoding, import the document data into the delivery platform, match the document with the model, and establish a bidirectional index relationship between the document and the model; S7, formulate corresponding roles and operation permissions for different units and positions, and provide corresponding deliverables according to the units and positions of the deliverees; Wherein, step S6 further comprises: S601, parsing the key-value pairs of all components in the model, extracting the code of the model to which each component belongs and the component ID, and forming a corresponding relationship table between the model code and the component ID; S602, parsing the document coding, combining the coding of the model and the document, formulating a matching catalog file of the document, the model and the component, and importing it into the delivery platform; S603, establishing a matching rule between the directory file and the model and component, and establishing a matching rule between the directory file and the document; S604, searching for matching items of each entry in the matching directory file with the model, component, and document respectively according to the matching rule, and linking the model and component matching items and the document matching items corresponding to the same entry in the matching directory file to establish a direct link relationship; S605, traverse the attachment relationship between each entry in the matching directory file and the document, model and component, issue a failure report for the entry with an incorrect attachment relationship or attachment failure, and give modification suggestions.

2. The method for delivering a BIM model for an undersea tunnel project according to claim 1, characterized in that: Step S6 also includes: S606, the user manually determines and modifies the attachment relationship of the failed item according to the modification suggestion, and returns to step S603 after the modification until all attachments are successful.

3. The method for delivering a BIM model for an undersea tunnel project according to claim 1 or 2, characterized in that: In step S602, the method for parsing the document code includes: using OCR technology to scan and recognize the document data to obtain the document code.

4. The method for delivering a BIM model for an undersea tunnel project according to claim 1, characterized in that: In step S3, the coding rules of the undersea tunnel project are coded according to the classification level of the undersea tunnel project, including four levels of coding, wherein the first-level coding is compiled according to the professional classification of the undersea tunnel project, the second-level coding is compiled according to the sub-items of the undersea tunnel project, the third-level coding is compiled according to the location of the model, and the fourth-level coding is an automatically generated model serial number.

5. The method for delivering a BIM model for an undersea tunnel project according to claim 1, characterized in that: In step S5, when the lightweight models are integrated, the models are integrated to the correct positions by using a shared coordinate method.

6. The method for delivering a BIM model for an undersea tunnel project according to claim 5, characterized in that: The method of integrating each model to the correct position by using shared coordinates includes: establishing a project BIM template file, importing the project general plan into the BIM template file, defining the project base point and measurement point, and entering the geodetic coordinate information as the main file, loading each model into the main file in the form of a link, and after the position is aligned, publishing the coordinates to the link file, and automatically integrating after the coordinate acquisition is completed.

7. The method for delivering a BIM model for an undersea tunnel project according to claim 1, characterized in that: In step S7, the delivery results can be displayed through the Web.

8. A system for delivering BIM models for an undersea tunnel project, characterized in that: The method for implementing the BIM model for delivering a subsea tunnel project as claimed in any one of claims 1 to 7 comprises: Lightweight unit, used to lightweight the model after it is imported into the delivery platform; The integration unit is connected to the lightweight unit for integrating the lightweighted model to form an overall BIM model, verifying whether there are any problems with the overall BIM model, and providing an alarm to repair the model or model data with problems. A parsing unit, which is in communication with the integration unit, is used to parse the key-value pairs of the components in the model, extract the code of the model to which each component belongs and the component ID, and is also used to parse the document code; A matching unit, which is in communication with the parsing unit and is used to match the document with the model and establish a bidirectional index relationship between the document and the model; The registration unit is used to register the corresponding roles of different units and positions, and set the operation permissions of the corresponding roles according to the registration information.

9. The system for delivering a BIM model for an undersea tunnel project according to claim 8, characterized in that: It also includes a coding unit, which is communicatively connected to the parsing unit and the matching unit, and is used to encode the split model and document data according to the coding rules of the undersea tunnel project.

10. The system for delivering BIM models for subsea tunnel projects according to claim 8, characterized in that: It also includes a visualization unit, which is communicated with the lightweight unit, the integration unit, the analysis unit, the matching unit, and the registration unit, and is used to display the operation of the system for delivering the BIM model of the undersea tunnel project to the user on the Web side.

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