Random on-site quality inspection, acceptance and settlement method based on BIM model

Abstract

The present invention discloses a method for random on-site quality inspection, evaluation, acceptance and settlement based on BIM model, including: dividing engineering projects based on building information BIM model, defining unit engineering, sub-engineering, sub-project and unit engineering; using mobile terminal APP to inspect the quality of unit engineering, filling in inspection and evaluation materials through mobile terminal, and randomly sending them to relevant approvers for review, and obtaining the review results; based on the review results, measuring and verifying the corresponding unit engineering, uploading the engineering quantity calculation book, and associating and matching the unit engineering with the contract list, completing the approval process, and obtaining the measurement and verification sheet; selecting the measurement and verification sheet range, automatically generating contract settlement information, and visually displaying the settlement progress. The engineering quantity and quality of each unit can be more clearly determined, thereby optimizing the settlement process and reducing settlement disputes and disputes.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a method for performing random on-site quality inspection, evaluation, acceptance and settlement based on a BIM model. Background Art

[0002] In the field of construction engineering, especially in hydropower engineering construction, quality inspection, acceptance and settlement are key links to ensure project quality and control costs. However, the existing acceptance and settlement methods mainly rely on paper drawings, on-site inspections and manual calculations, and this traditional method has many defects.

[0003] First, the problem of inconsistent inspection and evaluation standards is that there are differences in technical standards and inspection and evaluation standards in different regions and projects, which may lead to inconsistent on-site quality inspection and evaluation results. This inconsistency not only affects the evaluation of project quality, but also lays hidden dangers for the subsequent operation of the project. Secondly, with the development of hydropower engineering technology, traditional inspection and evaluation technology has become outdated. Many projects still rely on traditional technical methods and means, which limits the accuracy and reliability of inspection and evaluation results and cannot meet the needs of modern engineering construction. Furthermore, the uneven quality of inspection and evaluation personnel is also a major problem. Professional and technical personnel are required to conduct on-site quality inspection and evaluation of unit projects, but in some projects, inspection and evaluation personnel lack the necessary professional knowledge and experience, resulting in misjudgments and omissions in the inspection and evaluation process. In addition, the non-standardization of the inspection and evaluation process also affects the effect of quality inspection and evaluation. The problems of arbitrary operation and lack of supervision are common, resulting in inaccurate and unfair inspection and evaluation results, affecting the evaluation of the overall project quality. Finally, the lack of an effective supervision mechanism makes the inspection and evaluation process lack fairness and transparency. Some projects lack independent third-party supervision agencies, or the role of the supervision agencies is not fully played, resulting in the problem of opacity in the inspection and evaluation process.

[0004] In response to these problems, a method for random on-site quality inspection, acceptance and settlement based on the BIM model is urgently needed. Summary of the invention

[0005] The present invention provides a method for performing random on-site quality inspection, evaluation, acceptance and settlement based on a BIM model to solve the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The method of random on-site quality inspection, acceptance and settlement based on the BIM model includes:

[0008] S101: Based on the building information BIM model, the project is divided into unit projects, sub-projects, sub-projects and unit projects;

[0009] S102: Use the mobile APP to conduct quality inspection and evaluation of the unit project, fill in the inspection and evaluation materials through the mobile terminal, and randomly send them to the relevant approvers for review and obtain the review results;

[0010] S103: Based on the audit results, the corresponding unit project is measured and certified, the engineering quantity calculation sheet is uploaded, the unit project is associated and matched with the contract list, the approval process is completed, and the measurement certification sheet is obtained;

[0011] S104: Select the measurement certification form range, automatically generate contract settlement information, and visually display the settlement progress.

[0012] Wherein, step S101 includes:

[0013] S1011: Build BIM model based on engineering design drawings and related information;

[0014] S1012: After receiving the engineering project division request, obtain the structural information of the BIM model and relevant parameters of the engineering project in response to the division request;

[0015] S1013: Acquire engineering division data at different levels according to the structural information of the BIM model and relevant parameters of the engineering project;

[0016] S1014: performing division processing on the engineering division data according to a preset division standard to obtain a division result;

[0017] S1015: Determine the unit project, sub-project, sub-item project and unit project according to the division result, and obtain the construction section and construction location information related to each project unit;

[0018] S1016: Determine the construction process included in each unit project, and determine the report design method according to the construction process included in each unit project;

[0019] S1017: Bind the unit project to the report template, design the report template according to the relevant construction quality assessment procedures, and attach it to the corresponding unit project.

[0020] Wherein, step S102 includes:

[0021] S1021: Use the mobile APP to conduct quality inspection and evaluation of unit projects. The contractor fills in the inspection and evaluation information through the mobile terminal. The system records the geographic location, electronic signature or identity verification information, and initiates the inspection and evaluation process;

[0022] S1022: Based on the set initial inspection approver database, the unit project quality inspection and evaluation process is randomly sent to the initial inspector for review. The initial inspector uploads the handwritten signature and construction site photos through the mobile terminal for approval;

[0023] S1023: Based on the initial inspection results, a re-inspection and approval database is set up, and the unit project quality inspection and evaluation process is randomly sent to the re-inspector. The re-inspector uploads handwritten signatures and construction site photos through the mobile terminal for re-inspection and approval;

[0024] S1024: Based on the re-inspection results, a final inspection reviewer database is set up, and the unit project quality inspection and evaluation process is randomly sent to the final inspector. The final inspector uploads the handwritten signature and construction site photos through the mobile terminal for final inspection and approval;

[0025] S1025: Based on the final inspection results, set up an owner approver database, and randomly send the unit project quality inspection and evaluation process to the owner's personnel for final review. The owner's personnel upload their handwritten signatures and construction site photos through the mobile terminal for review.

[0026] Wherein, step S103 includes:

[0027] S1031: Analyze the audit results, identify the unit projects that need measurement certification, and obtain the audit analysis results, which include the priority processing order of the unit projects and detailed audit information;

[0028] S1032: Upload the engineering quantity calculation sheet based on the audit and analysis results. After completing the engineering quantity calculation, the contractor fills in the data according to the template and saves it as an electronic file;

[0029] S1033: associate and match the unit project with relevant items in the contract list, identify the project scope or type to which the unit project belongs, and find the corresponding items in the contract list, including the bill of quantities, pricing method, and payment terms;

[0030] S1034: Fill in the unit engineering design quantity, attach the contract list and review and approve it, and archive the approved engineering quantity calculation in the project management system;

[0031] S1035: The contractor selects the corresponding unit project to create a measurement certificate and fills it out according to the actual quantity. It is then transferred to the supervisor, designer, and owner for quantity approval.

[0032] Wherein, step S104 includes:

[0033] S1041: When the contractor selects the scope of the measurement certificate, the system automatically generates contract settlement information;

[0034] S1042: The system automatically calculates the contract amount, visa increase amount, advance payment deduction amount and final settlement amount based on the contract unit price, actual completed project quantity, visa increase amount and advance payment deduction amount parameters;

[0035] S1043: After the contract settlement information is approved, the system will write the settlement information into the incurred costs of the power plant design budget and visualize the settlement progress.

[0036] Among them, building a BIM model includes:

[0037] Acquire engineering design drawings and related information, and establish a three-dimensional model in BIM software according to the engineering design drawings and related information to form a first model information item;

[0038] Acquire a preset engineering requirement information database, and select a corresponding second model information item from the engineering requirement information database;

[0039] Determine a division principle according to the second model information item, and if the division principle meets a preset division standard, divide the first model information item according to the division principle to obtain a third model information item;

[0040] Adding attribute information of name, number, engineering quantity, and construction requirements to the third model information item to form a fourth model information item;

[0041] Checking and optimizing the fourth model information item, and if the preset model accuracy and completeness requirements are met, forming a fifth model information item;

[0042] The fifth model information item is exported as relevant documents of construction drawings and bill of quantities to complete the construction of the BIM model.

[0043] Among them, the unit project is bound to the report template, including:

[0044] Receive a binding request for a target unit project, and obtain relevant project information, construction process data, and quality assessment parameters of the target unit project;

[0045] According to the "Regulations on Construction Quality Assessment of Water Conservancy and Hydropower Projects" (SL 176-2007), the construction quality assessment regulations corresponding to the target unit project are determined, and the assessment standards and index requirements related to the unit project are extracted;

[0046] Use FineReport report design tool to design report templates suitable for target unit projects according to the determined construction quality assessment procedures;

[0047] The designed report template is attached to the corresponding unit project to ensure that one process corresponds to one report template. During the attachment process, data mapping and logic verification are performed on the report template according to the process attributes of the target unit project.

[0048] Wherein, after step S1025, the following steps are included:

[0049] Based on the audit results, the system generates a quality inspection report. If any problems or unqualified items are found in any inspection stage, the system will give corresponding prompts or suggestions.

[0050] Among them, the unit project is associated and matched with the relevant items in the contract list, including:

[0051] Determine the unit project to be matched, and output an initial unit project classification identifier from a preset classification based on the project category, where the initial classification identifier is used to indicate the basic characteristics or scope of the unit project;

[0052] Determine the project scope or type to which the unit project belongs:

[0053] According to the initial unit project classification mark, identify the project scope or type of the unit project, including foundation engineering, main structure, decoration engineering, etc. to form a clear project classification;

[0054] Find the items in the contract list that correspond to the project scope or type to which the unit project belongs. The items include: quantitative description of the project content and scope of the relevant unit project, determination of the specific pricing rules for the unit project, and clarification of the payment conditions and methods after the completion of the unit project;

[0055] Match the unit project with the corresponding contract list items to generate a clear correspondence table, which includes the classification identification of the unit project, the project scope to which it belongs, and the specific contents of the corresponding bill of quantities, pricing method, and payment terms;

[0056] For unit projects that cannot be matched to the contract list items, adjust the matching logic or classification identification, re-output the unit project classification identification and match the contract list items by adding association conditions or search scope, until a complete matching relationship is established or it is confirmed that no match can be made;

[0057] Based on the matching process and results, a matching result list is generated, which includes the unit engineering classification identification, project scope, and corresponding items in the contract list.

[0058] Among them, the settlement progress is visualized, including:

[0059] Match the core information of the contract settlement amount and settlement date with the power plant engineering design budget according to the established logic, and record them in the corresponding cost items;

[0060] Based on the settlement information and the progress of the power plant project, a Gantt chart is dynamically generated to display the settlement progress. The Gantt chart display includes task decomposition and progress marking, dynamic display of the timeline, abnormal reminders and annotations, and data interaction functions.

[0061] Compared with the prior art, the present invention has the following advantages:

[0062] The method of random quality inspection, acceptance and settlement on site based on BIM model includes: dividing the project based on the building information BIM model, defining unit projects, sub-projects, sub-projects and unit projects; using the mobile APP to inspect the quality of the unit project, filling in the inspection and evaluation materials through the mobile terminal, and randomly sending them to the relevant approvers for review and obtaining the review results; based on the review results, the corresponding unit project is measured and certified, the engineering quantity calculation book is uploaded, the unit project is associated and matched with the contract list, the approval process is completed, and the measurement certification form is obtained; the scope of the measurement certification form is selected, the contract settlement information is automatically generated, and the settlement progress is visually displayed. The engineering quantity and quality of each unit can be more clearly determined, thereby optimizing the settlement process and reducing settlement disputes and disputes.

[0063] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0064] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0066] Figure 1 It is a flow chart of a method for performing random on-site quality inspection, acceptance and settlement based on a BIM model in an embodiment of the present invention;

[0067] Figure 2 A flowchart of automatically generating contract settlement information in an embodiment of the present invention;

[0068] Figure 3 This is a simplified diagram of a method for performing random on-site quality inspection, acceptance and settlement based on a BIM model in an embodiment of the present invention. DETAILED DESCRIPTION

[0069] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0070] The embodiment of the present invention provides a method for performing random on-site quality inspection, evaluation, acceptance and settlement based on a BIM model, including:

[0071] S101: Based on the building information BIM model, the project is divided into unit projects, sub-projects, sub-projects and unit projects;

[0072] S102: Use the mobile APP to conduct quality inspection and evaluation of the unit project, fill in the inspection and evaluation materials through the mobile terminal, and randomly send them to the relevant approvers for review and obtain the review results;

[0073] S103: Based on the audit results, the corresponding unit project is measured and certified, the engineering quantity calculation sheet is uploaded, the unit project is associated and matched with the contract list, the approval process is completed, and the measurement certification sheet is obtained;

[0074] S104: Select the measurement certification form range, automatically generate contract settlement information, and visually display the settlement progress.

[0075] The working principle of the above technical solution is: Divide the engineering project based on the building information BIM model

[0076] Data initialization: Based on the Building Information Model (BIM), import the overall engineering data of the project.

[0077] Use the BIM model to decompose the project into unit projects, sub-projects, sub-item projects, and unit projects. In the BIM environment, automatic division can be achieved through classification attributes such as structure and function.

[0078] Generate a detailed engineering division table to form traceable engineering nodes, laying the foundation for subsequent inspection, evaluation and measurement.

[0079] Project site personnel use mobile APP to conduct quality inspection and evaluation of unit projects, and fill in inspection and evaluation materials in the APP, such as acceptance standards, actual implementation results, etc. After submitting the materials, the system randomly distributes the inspection and evaluation results to relevant approvers for review (such as engineers, supervisors, etc.). Approver completes the review through the mobile terminal and submits the review results (pass / fail). The inspection and evaluation system records and feeds back the final review results to the project management system.

[0080] Audit result matching: Based on the audit results of S102, extract the unit projects that have passed the audit and automatically associate and match them with the project items in the contract list.

[0081] Upload or generate engineering quantity calculations based on unit projects. Associate engineering quantities with approved project items to form complete measurement data. The system automatically completes the approval process, generates measurement certification forms, and archives them.

[0082] Select the scope of the measurement certificate and extract the relevant items in the contract list. The system automatically calculates the cumulative completion amount and generates the settlement amount. Through the visual interface, the progress of the contract settlement (such as completion ratio, settlement amount, remaining amount, etc.) is displayed in real time. The contract settlement information is automatically generated to form exportable documents or reports.

[0083] like Figure 3As shown, the PC-side engineering project part: S1: Engineering project division; S2: Unit engineering definition; S3: Unit engineering sets process quality standards and associates them through Fanruan in accordance with the "SL176-2007 National Standard".

[0084] APP quality inspection and evaluation: D1: The contractor APP fills in the quality inspection and evaluation information and submits it; D2: Approved by the initial inspection warehouse; D3: Approved by the re-inspection warehouse; D4: Approved by the final inspection warehouse; D5: Approved by the owner.

[0085] Measurement certification: F1: The contractor uploads the quantity calculation sheet and the unit project is linked; F2: List of related contracts for the unit project; F3: Approval of the design quantity of the unit project; F4: The contractor creates a measurement certification sheet; F5: Project manager-supervisor-owner for approval.

[0086] The visa form generates contract settlement: G1: Select the measurement visa form range to generate a contract settlement form; G2: The visa form generates the settlement calculation formula: Final_Settlement_Amount=Contract_Amount+A–B, and then proceeds with approval; G3: After approval, write it into the estimated cost incurred.

[0087] The beneficial effects of the above technical scheme are as follows: the random on-site audit method based on the unit project reduces the possibility of interest association and subjective judgment by randomly selecting auditors, making the inspection and evaluation results more fair and objective. The random on-site audit method requires auditors to conduct inspection and evaluation immediately after the completion of the unit project, which can find problems in real time and correct them in time, improving the accuracy and effectiveness of the inspection and evaluation. The inspection and evaluation method based on the unit project divides the project into several units, and each unit is independently inspected and evaluated, which simplifies the inspection and evaluation process and improves the inspection and evaluation efficiency. At the same time, the random on-site audit method also reduces waiting and coordination time, further improving the inspection and evaluation efficiency. Based on the inspection and evaluation method of the unit project, each unit has detailed inspection and evaluation records and reports, which can clearly trace the source and responsible person of the quality problem. At the same time, the random audit method also increases the supervision of the inspection and evaluation process to ensure the reliability and effectiveness of the inspection and evaluation results. Based on the inspection and evaluation method of the unit project, through real-time and accurate inspection and evaluation results, the engineering quantity and quality of each unit can be more clearly determined, thereby optimizing the settlement process and reducing settlement disputes and disputes.

[0088] In another embodiment, step S101 includes:

[0089] S1011: Build BIM model based on engineering design drawings and related information;

[0090] S1012: After receiving the engineering project division request, obtain the structural information of the BIM model and relevant parameters of the engineering project in response to the division request;

[0091] S1013: Acquire engineering division data at different levels according to the structural information of the BIM model and relevant parameters of the engineering project;

[0092] S1014: performing division processing on the engineering division data according to a preset division standard to obtain a division result;

[0093] S1015: Determine the unit project, sub-project, sub-item project and unit project according to the division result, and obtain the construction section and construction location information related to each project unit;

[0094] S1016: Determine the construction process included in each unit project, and determine the report design method according to the construction process included in each unit project;

[0095] S1017: Bind the unit project to the report template, design the report template according to the relevant construction quality assessment procedures, and attach it to the corresponding unit project.

[0096] The working principle of the above technical solution is: based on the engineering design drawings and related information, a three-dimensional digital model is created through the BIM (Building Information Modeling) tool. The BIM model integrates the geometric information, physical properties and related documents of the building. The project management platform or the relevant team makes a division request. The hierarchical structure of the building (such as buildings, floors, rooms, etc.) and engineering-related parameters (such as scale, construction technology, and progress requirements) are read through the BIM model. Based on the actual needs of the engineering project, separate and extract engineering division data of different levels from the BIM model. For example, a unit project contains several sub-projects, and the sub-projects are further subdivided into sub-projects. Combine the structural information with the engineering parameters to generate a preliminary division data set.

[0097] According to the project scale, construction stage and quality requirements, refer to industry specifications or project-specific rules (such as the "Standards for the Division of Construction Engineering Projects"), and process the preliminary division data in sections to further refine the engineering data.

[0098] Engineering level division: Unit project: the overall functional unit of the project, such as dams and powerhouses. Sub-project: a sub-project related to a specific part or function, such as foundation engineering and structural engineering. Sub-project: a more detailed construction content, such as steel bar binding and concrete pouring. Unit project: a construction section or construction site, such as pile foundation construction in a certain area. Binding information: attaching the engineering unit to the construction section and construction site information in the BIM model to form a visual display.

[0099] Identify the construction steps of each unit project (such as setting out, formwork, concrete pouring). Design reports that meet the quality evaluation standards according to the "Regulations on Construction Quality Assessment of Water Conservancy and Hydropower Projects" (SL 176-2007).

[0100] Using FineReport reporting tool, we designed the evaluation report template based on the process characteristics. We bound each template to the corresponding unit project to ensure that the evaluation information of different processes is clearly recorded.

[0101] The beneficial effects of the above technical solution are as follows: The BIM model integrates various types of project information into a three-dimensional visual model, effectively reducing the risk of information fragmentation. The project division data is intuitively displayed, which is convenient for project managers to understand and plan. By presetting the division standards, the project division can be completed quickly, avoiding the problem of time-consuming manual division and large errors. The division results are refined to the construction section or construction site, which is convenient for construction management.

[0102] In another embodiment, step S102 includes:

[0103] S1021: Use the mobile APP to conduct quality inspection and evaluation of unit projects. The contractor fills in the inspection and evaluation information through the mobile terminal. The system records the geographic location, electronic signature or identity verification information, and initiates the inspection and evaluation process;

[0104] S1022: Based on the set initial inspection approver database, the unit project quality inspection and evaluation process is randomly sent to the initial inspector for review. The initial inspector uploads the handwritten signature and construction site photos through the mobile terminal for approval;

[0105] S1023: Based on the initial inspection results, a re-inspection and approval database is set up, and the unit project quality inspection and evaluation process is randomly sent to the re-inspector. The re-inspector uploads handwritten signatures and construction site photos through the mobile terminal for re-inspection and approval;

[0106] S1024: Based on the re-inspection results, a final inspection reviewer database is set up, and the unit project quality inspection and evaluation process is randomly sent to the final inspector. The final inspector uploads the handwritten signature and construction site photos through the mobile terminal for final inspection and approval;

[0107] S1025: Based on the final inspection results, set up an owner approver database, and randomly send the unit project quality inspection and evaluation process to the owner's personnel for final review. The owner's personnel upload their handwritten signatures and construction site photos through the mobile terminal for review.

[0108] The working principle of the above technical solution is as follows: Filling and recording on the mobile terminal: The contractor fills in the quality inspection and evaluation information of the unit project in the mobile terminal APP. For example: key data such as pile number (location number of specific project piles), elevation (height information). Geographic location recording: Through the GPS module of the device, the system records the geographic location information of the contractor when filling in the information in real time. Identity authentication and electronic signature: Ensure the authenticity of the submitter's identity through the identity authentication method supported by the mobile terminal (such as fingerprint, face recognition or password) and electronic signature function. Initiation process: After confirming that the information is complete, the system automatically starts the inspection and evaluation process and distributes the task to the next approver.

[0109] Initial inspection reviewer database: The system pre-configures the initial inspection reviewer database, which contains all the information of the personnel who may participate in the initial inspection (such as name, position, contact information, etc.). This information is stored in a database (such as SQLite, MySQL). Random assignment: The system randomly selects an initial inspection reviewer by writing an SQL query. For example, an example using a SQLite database:

[0110] CREATE TABLE personnel(

[0111] id INTEGER PRIMARY KEY AUTOINCREMENT,

[0112] name TEXT NOT NULL,

[0113] age INTEGER,

[0114] position TEXT );

[0116] INSERT INTO personnel(name,age,position)VALUES('Alice',30,'Engineer');

[0117] INSERT INTO personnel(name,age,position)VALUES('Bob',25,'Manager');

[0118] INSERT INTO personnel(name,age,position)VALUES('Charlie',35,'Analyst');

[0119] Initial inspection and approval: The selected initial inspector completes the following tasks through the mobile terminal: Upload photos of the construction site as a visual basis for inspection and evaluation. Handwritten signature: Handwritten signature on the mobile terminal screen to confirm the review opinion on the quality of the unit project. After the approval is completed, the system records the timestamp and sends the result to the next process.

[0120] Re-inspection approver pool: Similar to the initial inspection, the system sets up a re-inspection approver pool for random assignment. Random delivery and operation: The process is randomly assigned to the re-inspector, who completes the following operations through the mobile terminal: Review the review results of the initial inspector. Upload on-site photos and handwritten signatures as the basis for re-inspection. Flow after confirmation: After the re-inspection is passed, the process enters the final inspection stage.

[0121] Final inspection reviewer database: The system establishes a final inspection reviewer database, and the process is still randomly assigned. Final inspection tasks: The final inspector needs to further confirm the re-inspection results and submit signatures and on-site photos through the mobile terminal. Quality report confirmation: After the final inspection and approval, the quality inspection and evaluation process is nearing the end, and the relevant information is archived.

[0122] Owner Approver Database: The system sets up a special owner approver database for random assignment of final review tasks. Final review tasks: quality records and on-site photos of all links before review. Submit the owner's signature to confirm that the review is finally completed.

[0123] The beneficial effects of the above technical solution are as follows: the mobile APP greatly improves the convenience of inspection and evaluation, eliminates the carrying and delivery of paper documents, and records key information (geolocation, time, signature) in real time, making the inspection and evaluation process more efficient and transparent. The random assignment of approvers effectively prevents human intervention and ensures the fairness of the inspection and evaluation results. Through geographic location records, electronic signatures and on-site photos, the system fully records the inspection and evaluation process, and each link can be traced back to reduce disputes. Using modern database technology (such as SQL queries), the personnel database can be flexibly adjusted to meet the needs of different project sizes and organizational structures.

[0124] In another embodiment, step S103 includes:

[0125] S1031: Analyze the audit results, identify the unit projects that need measurement certification, and obtain the audit analysis results, which include the priority processing order of the unit projects and detailed audit information;

[0126] S1032: Upload the engineering quantity calculation sheet based on the audit and analysis results. After completing the engineering quantity calculation, the contractor fills in the data according to the template and saves it as an electronic file;

[0127] S1033: associate and match the unit project with relevant items in the contract list, identify the project scope or type to which the unit project belongs, and find the corresponding items in the contract list, including the bill of quantities, pricing method, and payment terms;

[0128] S1034: Fill in the unit engineering design quantity, attach the contract list and review and approve it, and archive the approved engineering quantity calculation in the project management system;

[0129] S1035: The contractor selects the corresponding unit project to create a measurement certificate and fills it out according to the actual quantity. It is then transferred to the supervisor, designer, and owner for quantity approval.

[0130] Among them, obtaining audit analysis results includes:

[0131] Analyze the audit results, identify the unit projects that need to be certified, and build an analysis model, including: extracting data from the audit results, including project progress indicators, capital flow requirements, and contract terms matching; setting the horizontal axis of the analysis model to the unit project, and the vertical axis to the key indicator value corresponding to each unit project; forming the key indicator curve of the unit project for project progress, capital requirements, and contract matching;

[0132] Determine whether the key indicator of any unit project exceeds the set threshold value based on the key indicator curve, and create a priority factor based on the change rate of the key indicator, specifically including: calculating the change rate of the unit project on each key indicator curve to obtain the key indicator-change rate set of each unit project; determine whether the change rate in each key indicator-change rate set is greater than or equal to the set threshold value; different key indicators have different threshold values; filter out all unit projects with a change rate greater than or equal to the set threshold value;

[0133] Determine the priority factor based on the selected change rate and the corresponding unit project, set a first weight value for each key indicator, and the first weight value is determined according to the degree of influence of the indicator on the project results; perform weighted sum calculation on the selected change rate and the corresponding first weight value to obtain the weighted sum value of each unit project; determine the unit project with a weighted sum value greater than or equal to the sum threshold as the unit project that needs measurement certification, and assign the corresponding priority factor;

[0134] The audit analysis results are obtained based on the priority factors. The audit analysis results include the priority processing order of the unit projects and the detailed audit information. A priority factor database is constructed to record the priority factor of each unit project and the corresponding audit details, including the project location, current progress and contract terms matching.

[0135] The working principle of the above technical solution is: the system conducts in-depth analysis of the unit projects of the project through the audit results to identify which unit projects need to be verified. The audit results provide detailed information, including the priority order of the unit projects and their audit status. For example, the priority order can be sorted according to factors such as the critical path of the project schedule and the cash flow requirements. The audit details include the project location, current progress and matching of relevant contract terms.

[0136] The contractor completes the quantity calculation of the unit project based on the audit and analysis results, fills in the system template and saves it as an electronic file (such as Excel or PDF format). Find the corresponding unit project through the project management system, use the upload function to submit the quantity calculation book, and fill in the relevant description information for easy classification and retrieval. The system provides a file attachment function to specify the unit project to which the calculation book belongs.

[0137] The system associates unit projects with items in the contract list. For example, it associates "foundation projects" with "earth excavation projects" in the contract list, matching key contents such as the bill of quantities, pricing methods (such as fixed unit prices, variable unit prices), and payment terms. This process is completed through preset rules and classification models to ensure the correct attribution of project scope or type.

[0138] The contractor fills in the design quantity of the unit project according to the contract list items and submits it for review. The approval process includes multiple confirmations from the supervision engineer, design unit and owner to ensure the accuracy and compliance of the data. After approval, the system will archive the calculation book in the project management system for subsequent query and traceability.

[0139] The contractor selects the approved unit project, creates a measurement certificate, and fills in the actual number of completed projects. The certificate is transferred through the system to the supervisor, designer, owner and other relevant parties for approval step by step. If additional or modified information is required during the approval process, the system supports returning to modify and resubmit.

[0140] The beneficial effects of the above technical solutions are as follows: automated review and analysis reduces the complexity of manual intervention, priority sorting improves the efficiency of resource allocation, and ensures that key unit projects are processed in a timely manner. The template and system hookup functions of the quantity calculation book ensure data consistency, facilitate subsequent inquiries and verifications, and reduce the risk of disputes caused by missing files or incorrect classification. The association of unit projects with the contract list improves the transparency of project management, avoids errors and omissions, and improves the accuracy of financial settlement. The electronic approval process and multi-party collaboration mechanism improve efficiency and reduce the delays that may occur in traditional paper processes. The archiving function ensures long-term data preservation and availability.

[0141] In another embodiment, step S104 includes:

[0142] S1041: When the contractor selects the scope of the measurement certificate, the system automatically generates contract settlement information;

[0143] S1042: The system automatically calculates the contract amount, visa increase amount, advance payment deduction amount and final settlement amount based on the contract unit price, actual completed project quantity, visa increase amount and advance payment deduction amount parameters;

[0144] S1043: After the contract settlement information is approved, the system will write the settlement information into the incurred costs of the power plant design budget and visualize the settlement progress.

[0145] The working principle of the above technical solution is as follows: the contractor selects a specific range of measurement certificates in the system, which include the completed work quantity and possible change certificates. The system will automatically generate preliminary settlement information for the contract based on the input information. Measurement certificate: It is a document or data that records the amount of work completed by the contractor, usually presented in the form of quantity, amount or description. The system generates the relevant preliminary contract amount and change information by matching the work quantity within the scope of the certificate with the contract unit price.

[0146] The contract amount and final settlement amount are automatically calculated based on the contract price, actual completed project volume, visa increase amount and advance payment deduction amount parameters. The generation method and formula are as follows: The system uses the input parameters and calculation rules to generate the contract amount and final settlement amount: Contract amount: Formula: Contract_Amount = P × Q (P is the contract price, Q is the actual completed project volume)

[0147] Visa increase amount: The system directly obtains the amount recorded in the visa form, set to A. Prepayment deduction amount: Read directly from the visa form, set to B.

[0148] Final settlement amount: Formula: Final_Settlement_Amount=Contract_Amount+AB

[0149] Through the above formula, the system automatically completes the calculation and generates the settlement amount.

[0150] After the settlement information is approved, the incurred costs of the power plant design budget are written, and the settlement progress is visualized. Data writing: After all contract settlement information is approved, the system will write the relevant data into the incurred cost items in the power plant design budget module. This process ensures that the actual payment amount is aligned with the cost accounting in the design budget. The system visualizes the settlement progress data (such as the completed amount and the completed progress) by generating a Gantt chart. The Gantt chart displays the stage of settlement completion, the current progress, and the future planned progress through the timeline, helping users to intuitively understand the settlement status.

[0151] The beneficial effects of the above technical solution are as follows: Automated calculation and data generation reduce the time of manual input and verification, and improve the efficiency of contract settlement. Visualization tools (such as Gantt charts) make project progress and cost control more intuitive and transparent. Through formulas and system logic, errors that may be caused by manual calculations are avoided. The combination of data writing and approval flow ensures the integrity and consistency of information. Real-time updated settlement progress and data visualization provide project managers with timely and accurate reference information. It helps to optimize resource allocation, control costs and ensure the smooth completion of the project. The system combines the settlement amount with the design budget to achieve dynamic tracking and control of costs, which is convenient for subsequent financial audits and report generation.

[0152] In another embodiment, constructing a BIM model includes:

[0153] Acquire engineering design drawings and related information, and establish a three-dimensional model in BIM software according to the engineering design drawings and related information to form a first model information item;

[0154] Acquire a preset engineering requirement information database, and select a corresponding second model information item from the engineering requirement information database;

[0155] Determine a division principle according to the second model information item, and if the division principle meets a preset division standard, divide the first model information item according to the division principle to obtain a third model information item;

[0156] Adding attribute information of name, number, engineering quantity, and construction requirements to the third model information item to form a fourth model information item;

[0157] Checking and optimizing the fourth model information item, and if the preset model accuracy and completeness requirements are met, forming a fifth model information item;

[0158] The fifth model information item is exported as relevant documents of construction drawings and bill of quantities to complete the construction of the BIM model.

[0159] The working principle of the above technical solution is: create a complete 3D model in BIM software based on the engineering design drawings and related information. All structures (such as beams, columns, walls), equipment (such as generators, control equipment), pipelines (such as water pipelines, cable trays), etc. need to be accurately modeled to ensure that the model reflects the details and design intent of the actual project. The geometry, physical properties and associated information of the model must be accurate and complete. The initial model can be quickly established with the help of drawing scanning, point cloud data import and other technologies.

[0160] Obtain and analyze the contents of the project demand information database to clarify the functional requirements, construction technology, time schedule requirements, etc. of the project. For example, the functional requirements of a hydropower station include power generation capacity, flood control capacity, and operating efficiency; the construction technology involves concrete pouring, steel bar binding, equipment installation, etc.

[0161] Determine the division principle: Determine the principle of model unit division according to the project requirements. Usually it includes division by function (such as power generation area, management area, etc.), division by process (such as civil engineering, mechanical and electrical installation, etc.), and division by space (such as division by floor, partition). The division principle needs to meet the preset division standards, such as construction logic and independence, to ensure that the divided model can directly guide the construction.

[0162] Use BIM for division: In the BIM model, use software tools (such as "split", "group" and other commands) to divide the model into independent unit projects according to the determined division principles. Each unit project should have clear boundaries and scope to avoid model overlap or omission.

[0163] Add attribute information: Process description: Add detailed attribute information to each unit project, including: Name: Indicate the function or area name of the unit project. Number: Assign a unique number to the unit project for easy identification. Project quantity: Calculate the number of materials, construction area, etc. Construction requirements: Add construction instructions and specification requirements. For example: The equipment installation unit contains the attributes "Equipment model: XX123, installation height: 3 meters, construction temperature requirement: above 15℃".

[0164] Model Check and Optimization: Process Description: Check whether the model meets the preset accuracy and completeness requirements, including: Clear boundaries: Ensure that there is no overlap or omission between unit projects. Complete attribute information: Ensure that additional information is comprehensive. Optimization measures: Use collision check tools to detect whether the model has conflicts, adjust geometry or attributes, and ensure that the model meets construction accuracy.

[0165] Export the division results: Export the optimized BIM model as construction drawings and bill of quantities. Construction drawings provide floor plans, elevations, sections, etc.; bill of quantities provides a basis for subsequent cost estimation and management.

[0166] The beneficial effects of the above technical solution are: with the help of BIM technology, complex three-dimensional modeling can be quickly completed, reducing the repetitive work in traditional modeling methods. By rationally dividing unit projects and clarifying the construction scope and attribute information of each part, it is helpful to organize and manage the construction process. Through model inspection and optimization, the accuracy of the model in terms of geometry, attributes and construction requirements is ensured, and errors and rework in construction are reduced. The BIM model provides a unified platform for different disciplines (such as structure, equipment, and pipelines), promotes cross-departmental collaboration, and reduces communication costs. The BIM model not only serves the construction phase, but also serves as a digital asset in the operation and maintenance phase, providing data support for subsequent maintenance and transformation. Accurate bills of quantities and construction drawings reduce waste and delays, and significantly improve the economic efficiency of the project.

[0167] In another embodiment, binding a unit project to a report template includes:

[0168] Receive a binding request for a target unit project, and obtain relevant project information, construction process data, and quality assessment parameters of the target unit project;

[0169] According to the "Regulations on Construction Quality Assessment of Water Conservancy and Hydropower Projects" (SL 176-2007), the construction quality assessment regulations corresponding to the target unit project are determined, and the assessment standards and index requirements related to the unit project are extracted;

[0170] Use FineReport report design tool to design report templates suitable for target unit projects according to the determined construction quality assessment procedures;

[0171] The designed report template is attached to the corresponding unit project to ensure that one process corresponds to one report template. During the attachment process, data mapping and logic verification are performed on the report template according to the process attributes of the target unit project.

[0172] The working principle of the above technical solution is as follows: the user initiates a binding request for the target unit project through the system, and the system retrieves the basic information of the unit project. The system queries the associated database of the unit project to obtain its project information (such as project name, location, category, etc.), construction process data (such as start time, end time, construction unit, etc.) and quality assessment parameters (such as acceptance standards, testing requirements). Through this information, the properties of the target unit project and the integrity and accuracy of the construction-related data are confirmed.

[0173] Determine the construction quality assessment procedures, according to the regulations: According to the "Water Conservancy and Hydropower Engineering Construction Quality Assessment Procedures" (SL176-2007), determine the corresponding construction quality assessment procedures through unit project attributes (such as type, scale, construction method). For example: reinforced concrete engineering: test indicators such as steel bar spacing and concrete strength. Earthwork engineering: assess indicators such as compaction, slope, and flatness. The system extracts relevant assessment standards and indicator requirements from the standard library to ensure that each indicator has a clear quantitative or descriptive standard.

[0174] Design a report template, open the FineReport report design tool, and based on the quality assessment procedures of the target unit project, design a report template that adapts to its process and assessment requirements.

[0175] Set up the template structure: Title part: including basic information such as project name, process name, construction unit, etc. Data part: display construction process data (such as measured value, theoretical value, deviation, etc.) and quality assessment parameters (such as inspection items, qualified standards, inspection results). Summary part: summarize the overall assessment results of the unit project (such as qualified / unqualified). Data connection: through the database connection function of FineReport, the construction data source of the unit project is associated, and the data required for assessment is called and updated in real time.

[0176] Report template attachment and logic verification, attach the completed report template to the corresponding unit project. The system dynamically maps the required data fields in the report template according to the process attributes of the project.

[0177] Binding of process attributes and template fields: For example, the data fields of the rebar binding process correspond to the "rebar spacing" and "binding density" items in the template. Dynamic field verification: Ensure that all mapped data fields comply with logical rules (such as field type, data range, data integrity). After the verification is passed, the report template is successfully bound to the target unit project, and each generated process has a unique report template.

[0178] The beneficial effects of the above technical solution are: the system automatically extracts unit engineering information and construction data, reduces manual operation errors, and improves the efficiency of data acquisition. According to the "Regulations on Quality Assessment of Water Conservancy and Hydropower Engineering Construction", ensure that the assessment standards are unified and scientific, and avoid standard deviations caused by differences in human understanding. Through the report template designed by FineReport, complex data is converted into easy-to-understand charts and tables, which facilitates managers to quickly grasp the quality assessment results. According to the process attributes, the template is dynamically attached to achieve "one process, one report", ensuring that the assessment of each process is targeted. The data mapping and logic verification mechanism improves the accuracy and completeness of the report generation process.

[0179] In another embodiment, the step S1025 includes:

[0180] Based on the audit results, the system generates a quality inspection report. If any problems or unqualified items are found in any inspection stage, the system will give corresponding prompts or suggestions.

[0181] The working principle of the above technical solution is: the system automatically summarizes the evaluation results of each process according to the attached report template and inspection and evaluation data. The inspection and evaluation data are compared with the evaluation standards item by item: items that meet the standards are marked as "qualified" and the evaluation data is recorded. Items that do not meet the standards are marked as "unqualified" and the deviation data (such as the difference between the actual measured value and the qualified standard) is recorded.

[0182] Automatically generate quality inspection and evaluation reports, including: project information: project name, location, construction unit, etc.

[0183] Verification and evaluation results: List the evaluation results of each indicator in detail (qualified / unqualified). Overall evaluation conclusion: Summarize the quality status of the unit project (passed / failed) based on the verification and evaluation results.

[0184] Tips and suggestions for problems or non-conforming items: Problem identification: The system scans the inspection and evaluation data of all processes and locates items marked as "non-conforming". Analyze the types and causes of non-conforming items and handle them according to the following categories: Data-type problems: such as missing measurements, input errors, etc. Process-type problems: such as construction methods that do not meet requirements. Material-type problems: such as materials that do not meet standards. The system automatically links the quality management knowledge base and matches the corresponding solutions.

[0185] Prompt and suggestion generation: such as "Unqualified items: Concrete strength is insufficient, it is recommended to review the test data or adjust the mix ratio." Based on the type of problem, generate actionable suggestions, such as "It is recommended to increase the compaction degree to meet the design requirements" or "Check the quality certification documents of the raw material supply batches."

[0186] The system will generate quality inspection reports in PDF or other formats for easy review and archiving by project managers. If problems are found, the system will notify the relevant responsible parties and generate rectification records or feedback reports for further processing.

[0187] The beneficial effects of the above technical solution are: the system can quickly generate quality inspection and evaluation reports through automatic data comparison and analysis, avoiding deviations in manual statistics and records. The standardized data comparison method ensures the accuracy and consistency of the inspection and evaluation results. The classification and knowledge base suggestions for non-conforming items enable the system to not only identify problems, but also provide intelligent support for solving them.

[0188] In another embodiment, associating and matching the unit project with the relevant items in the contract list includes:

[0189] Determine the unit project to be matched, and output an initial unit project classification identifier from a preset classification based on the project category, where the initial classification identifier is used to indicate the basic characteristics or scope of the unit project;

[0190] Determine the project scope or type to which the unit project belongs:

[0191] According to the initial unit project classification mark, identify the project scope or type of the unit project, including foundation engineering, main structure, decoration engineering, etc. to form a clear project classification;

[0192] Find the items in the contract list that correspond to the project scope or type to which the unit project belongs. The items include: quantitative description of the project content and scope of the relevant unit project, determination of the specific pricing rules for the unit project, and clarification of the payment conditions and methods after the completion of the unit project;

[0193] Match the unit project with the corresponding contract list items to generate a clear correspondence table, which includes the classification identification of the unit project, the project scope to which it belongs, and the specific contents of the corresponding bill of quantities, pricing method, and payment terms;

[0194] For unit projects that cannot be matched to the contract list items, adjust the matching logic or classification identification, re-output the unit project classification identification and match the contract list items by adding association conditions or search scope, until a complete matching relationship is established or it is confirmed that no match can be made;

[0195] Based on the matching process and results, a matching result list is generated, which includes the unit engineering classification identification, project scope, and corresponding items in the contract list.

[0196] The working principle of the above technical solution is: determine the initial unit project classification mark, the system identifies the basic information of the unit project (such as project name, scale, construction content) according to the preset project category classification library. Output the initial classification mark to indicate the basic characteristics or scope of the unit project. For example:

[0197] Foundation Engineering Mark: FND001

[0198] Main structure identification: STR002

[0199] Renovation project logo: FIN003

[0200] Determine the project scope or type to which the unit project belongs. The system parses the initial classification identifier and maps it to the predefined project classification level. Classify the unit project, for example:

[0201] Foundation engineering (pile foundation, foundation pit support, etc.).

[0202] Main structure (concrete pouring, steel structure construction, etc.).

[0203] Renovation works (floor laying, wall painting, etc.).

[0204] Search for contract list items. The system compares the project scope or type of the unit project with the items in the contract list one by one. Contract list items include:

[0205] Project content and scope: such as "concrete foundation construction, thickness 500mm".

[0206] Pricing rules: such as "settled by cubic meter unit price".

[0207] Payment terms: such as "After the project is completed and accepted by Party A, 90% of the payment will be paid."

[0208] The system associates the entries with the unit engineering content to ensure an accurate match.

[0209] Generate a correspondence table to organize the matching unit projects and contract list items into a clear correspondence table. The table contains:

[0210] Unit project classification identification (such as STR002).

[0211] Project scope (e.g. “Main structure”).

[0212] Corresponding contract list items (such as "concrete pouring, unit price 300 yuan / cubic meter").

[0213] Output format example:

[0214]

[0215] To process unmatched unit projects, the system identifies the unmatched unit projects and analyzes the reasons: the classification identification is unclear and the contract list items are missing.

[0216] Adjust matching logic: Increase the search scope: such as expanding from a single category to related categories. Add association conditions: such as matching similar project descriptions or pricing rules.

[0217] Update the classification ID and rematch the contract list until the match is successful or it is confirmed that the match cannot be made.

[0218] Generate a list of matching results, and summarize the matching results to form a list.

[0219] The list contents include: unit project classification identification, project scope, corresponding items in the contract list and matching status.

[0220] The beneficial effects of the above technical solution are: through the initial classification identification and project classification, the classification standards of unit projects are unified, which is convenient for subsequent management and traceability. The workload of manual comparison is reduced, and the matching efficiency and accuracy are improved. The generated correspondence table clarifies the correspondence between the unit project and the contract list, which is convenient for all parties to review. The pricing method and payment terms are clearly listed to reduce settlement disputes.

[0221] In another embodiment, the settlement progress is visualized, including:

[0222] Match the core information of the contract settlement amount and settlement date with the power plant engineering design budget according to the established logic, and record them in the corresponding cost items;

[0223] Based on the settlement information and the progress of the power plant project, a Gantt chart is dynamically generated to display the settlement progress. The Gantt chart display includes task decomposition and progress marking, dynamic display of the timeline, abnormal reminders and annotations, and data interaction functions.

[0224] The working principle of the above technical solution is as follows: the system extracts core information from the contract settlement data, including the settlement amount and settlement date. The settlement information is compared and matched with the power plant engineering design budget: the budget items are located according to the project stage (such as basic engineering, equipment procurement, installation and commissioning, etc.). Comparison is performed based on the item description and the amount matching algorithm (such as the allowable range of amount error).

[0225] The matching results are recorded in the corresponding cost items, including: budget item number (such as BAS001 for basic engineering), settlement amount, date, matching status (such as "complete match" or "match within 5% error"). Unmatched settlement items are marked as abnormal and prompted to recheck or manual intervention.

[0226] Dynamically generate Gantt charts, task decomposition and progress marking: Divide the power plant project into several key tasks (such as "foundation pit excavation" and "equipment installation", etc.). The system marks the completion ratio of each task based on the settlement information and project progress records. For example: foundation pit excavation is 80% complete (display task bar partially filled). Equipment installation is 50% complete (display color changes).

[0227] Dynamic display of timeline: Gantt chart displays task progress according to the timeline, with the horizontal axis representing time (day, week, month) and the vertical axis representing tasks. The system dynamically adjusts the timeline range and supports zooming (viewing global progress or details).

[0228] Abnormal reminder and annotation: If the settlement information of a task lags behind the expected progress (for example, the settlement amount is far lower than the completion ratio), the Gantt chart will automatically mark the abnormality and display a prompt annotation. Provide color or icon (such as red warning sign) to mark abnormal tasks.

[0229] Data interaction function: Users can click on the task bar in the Gantt chart to view detailed information (such as settlement amount, completion ratio, settlement date, etc.).

[0230] Supports real-time updates. When new settlement data is entered, the Gantt chart will automatically refresh and display.

[0231] The beneficial effects of the above technical solution are: through accurate settlement matching and visual Gantt chart display, the system significantly improves the refinement of cost and schedule management. The dynamic Gantt chart combined with settlement data provides managers with real-time information support and optimizes engineering decisions. Abnormal reminders and dynamic adjustment functions effectively reduce the risk of engineering settlement and schedule deviations.

[0232] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A random quality inspection, acceptance and settlement method based on the BIM model, characterized in that: include: S101: Based on the building information BIM model, the project is divided into unit projects, sub-projects, sub-projects and unit projects; S102: Use the mobile APP to conduct quality inspection and evaluation of the unit project, fill in the inspection and evaluation materials through the mobile terminal, and randomly send them to the relevant approvers for review and obtain the review results; S103: Based on the audit results, the corresponding unit project is measured and certified, the engineering quantity calculation sheet is uploaded, the unit project is associated and matched with the contract list, the approval process is completed, and the measurement certification sheet is obtained; S104: Select the measurement certification form range, automatically generate contract settlement information, and visually display the settlement progress.

2. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 1 is characterized in that: Step S101 includes: S1011: Build BIM model based on engineering design drawings and related information; S1012: After receiving the engineering project division request, obtain the structural information of the BIM model and relevant parameters of the engineering project in response to the division request; S1013: Acquire engineering division data at different levels according to the structural information of the BIM model and relevant parameters of the engineering project; S1014: performing division processing on the engineering division data according to a preset division standard to obtain a division result; S1015: Determine the unit project, sub-project, sub-item project and unit project according to the division result, and obtain the construction section and construction location information related to each project unit; S1016: Determine the construction process included in each unit project, and determine the report design method according to the construction process included in each unit project; S1017: Bind the unit project to the report template, design the report template according to the relevant construction quality assessment procedures, and attach it to the corresponding unit project.

3. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 1 is characterized in that: Step S102 includes: S1021: Use the mobile APP to conduct quality inspection and evaluation of unit projects. The contractor fills in the inspection and evaluation information through the mobile terminal. The system records the geographic location, electronic signature or identity verification information, and initiates the inspection and evaluation process; S1022: Based on the set initial inspection approver database, the unit project quality inspection and evaluation process is randomly sent to the initial inspector for review. The initial inspector uploads the handwritten signature and construction site photos through the mobile terminal for approval; S1023: Based on the initial inspection results, a re-inspection and approval database is set up, and the unit project quality inspection and evaluation process is randomly sent to the re-inspector. The re-inspector uploads handwritten signatures and construction site photos through the mobile terminal for re-inspection and approval; S1024: Based on the re-inspection results, a final inspection reviewer database is set up, and the unit project quality inspection and evaluation process is randomly sent to the final inspector. The final inspector uploads the handwritten signature and construction site photos through the mobile terminal for final inspection and approval; S1025: Based on the final inspection results, set up an owner approver database, and randomly send the unit project quality inspection and evaluation process to the owner's personnel for final review. The owner's personnel upload their handwritten signatures and construction site photos through the mobile terminal for review.

4. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 1 is characterized in that: Step S103 includes: S1031: Analyze the audit results, identify the unit projects that need measurement certification, and obtain the audit analysis results, which include the priority processing order of the unit projects and detailed audit information; S1032: Upload the engineering quantity calculation sheet based on the audit and analysis results. After completing the engineering quantity calculation, the contractor fills in the data according to the template and saves it as an electronic file; S1033: associate and match the unit project with relevant items in the contract list, identify the project scope or type to which the unit project belongs, and find the corresponding items in the contract list, including the bill of quantities, pricing method, and payment terms; S1034: Fill in the unit engineering design quantity, attach the contract list and review and approve it, and archive the approved engineering quantity calculation in the project management system; S1035: The contractor selects the corresponding unit project to create a measurement certificate and fills it out according to the actual quantity. It is then transferred to the supervisor, designer, and owner for quantity approval.

5. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 1 is characterized in that: Step S104 includes: S1041: When the contractor selects the scope of the measurement certificate, the system automatically generates contract settlement information; S1042: The system automatically calculates the contract amount, visa increase amount, advance payment deduction amount and final settlement amount based on the contract unit price, actual completed project quantity, visa increase amount and advance payment deduction amount parameters; S1043: After the contract settlement information is approved, the system will write the settlement information into the incurred costs of the power plant design budget and visualize the settlement progress.

6. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 2 is characterized in that: Build a BIM model, including: Acquire engineering design drawings and related information, and establish a three-dimensional model in BIM software according to the engineering design drawings and related information to form a first model information item; Acquire a preset engineering requirement information database, and select a corresponding second model information item from the engineering requirement information database; Determine a division principle according to the second model information item, and if the division principle meets a preset division standard, divide the first model information item according to the division principle to obtain a third model information item; Adding attribute information of name, number, engineering quantity, and construction requirements to the third model information item to form a fourth model information item; Checking and optimizing the fourth model information item, and if the preset model accuracy and completeness requirements are met, forming a fifth model information item; The fifth model information item is exported as relevant documents of construction drawings and bill of quantities to complete the construction of the BIM model.

7. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 2 is characterized in that: Bind the unit project to the report template, including: Receive a binding request for a target unit project, and obtain relevant project information, construction process data, and quality assessment parameters of the target unit project; According to the "Regulations on Construction Quality Assessment of Water Conservancy and Hydropower Projects" (SL 176-2007), the construction quality assessment regulations corresponding to the target unit project are determined, and the assessment standards and index requirements related to the unit project are extracted; Use FineReport report design tool to design report templates suitable for target unit projects according to the determined construction quality assessment procedures; The designed report template is attached to the corresponding unit project to ensure that one process corresponds to one report template. During the attachment process, data mapping and logic verification are performed on the report template according to the process attributes of the target unit project.

8. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 3 is characterized in that: The following steps are included after step S1025: Based on the audit results, the system generates a quality inspection report. If any problems or unqualified items are found in any inspection stage, the system will give corresponding prompts or suggestions.

9. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 4 is characterized in that: Associate and match the unit works with the relevant items in the contract list, including: Determine the unit project to be matched, and output an initial unit project classification identifier from a preset classification based on the project category, where the initial classification identifier is used to indicate the basic characteristics or scope of the unit project; Determine the project scope or type to which the unit project belongs: According to the initial unit project classification mark, identify the project scope or type of the unit project, including foundation engineering, main structure, decoration engineering, etc. to form a clear project classification; Find the items in the contract list that correspond to the project scope or type to which the unit project belongs. The items include: quantitative description of the project content and scope of the relevant unit project, determination of the specific pricing rules for the unit project, and clarification of the payment conditions and methods after the completion of the unit project; Match the unit project with the corresponding contract list items to generate a clear correspondence table, which includes the classification identification of the unit project, the project scope to which it belongs, and the specific contents of the corresponding bill of quantities, pricing method, and payment terms; For unit projects that cannot be matched to the contract list items, adjust the matching logic or classification identification, re-output the unit project classification identification and match the contract list items by adding association conditions or search scope, until a complete matching relationship is established or it is confirmed that no match can be made; Based on the matching process and results, a matching result list is generated, which includes the unit engineering classification identification, project scope, and corresponding items in the contract list.

10. The method for random on-site quality inspection, acceptance and settlement based on the BIM model according to claim 5 is characterized in that: Visualize the settlement progress, including: Match the core information of the contract settlement amount and settlement date with the power plant engineering design budget according to the established logic, and record them in the corresponding cost items; Based on the settlement information and the progress of the power plant project, a Gantt chart is dynamically generated to display the settlement progress. The Gantt chart display includes task decomposition and progress marking, dynamic display of the timeline, abnormal reminders and annotations, and data interaction functions.

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