A progress management method and system based on a BIM model

Abstract

The application provides a progress management method and system based on a BIM model, wherein the method comprises the following steps: S1, establishing a BIM model of a target building based on parameters of the target building; S2, superimposing a virtual model in the BIM on a real scene to be constructed through an AR device, and intuitively displaying a building structure; S3, a calculation system calculates a daily construction progress according to a predicted completion time of the target building, simulates a construction scene on site through the AR device, compares a construction progress simulated by the AR device with construction photos collected by a collection device to obtain a construction progress deviation; S4, comparing the construction progress deviation with a preset construction progress deviation of the calculation system, and judging whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold value, and taking corresponding measures. The application can quickly, accurately and visually manage an engineering project through the BMI.

Description

Technical Field

[0001] This invention relates to the field of construction management technology, and in particular to a progress management method and system based on BIM model. Background Technology

[0002] In the traditional construction industry, construction schedule management has always been a crucial aspect of project management, directly impacting project cost, quality, and delivery time. However, many companies struggle with insufficient depth in their construction schedule data analysis, relying on manual recording, experiencing delayed data updates, and failing to provide real-time updates of the construction site. These issues not only increase management complexity but also reduce efficiency, making it difficult to adapt to the increasingly complex and rapidly changing demands of modern construction projects. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a BIM model-based progress management method and system to solve the problem that existing technologies lack sufficient depth in analyzing construction progress data, thus hindering effective management of construction progress. The technical solution adopted is as follows:

[0004] A schedule management method based on a BIM model, the method comprising:

[0005] S1: Based on the parameters of the target building under construction, establish a BIM model of the target building;

[0006] S2: Using AR devices, the virtual model in BIM is overlaid onto the real-world construction scene, visually displaying the building structure;

[0007] S3: The calculation system calculates the daily construction progress based on the expected completion time of the target building. At the same time, it simulates the on-site construction scene through AR equipment and compares the on-site construction photos collected by the data acquisition equipment with the simulated construction progress to obtain the construction progress deviation.

[0008] S4: Compare the construction progress deviation with the construction progress deviation preset by the calculation system, and determine whether the difference between the construction progress deviation and the preset construction progress deviation is higher than the threshold, and take corresponding measures.

[0009] Preferably, S1 includes:

[0010] S11: Create project files in BIM and set relevant project information;

[0011] S12: Based on the parameters of the target building, select the required materials and structures from the intelligent component library, and complete the construction of the target building in BIM.

[0012] Preferably, S2 includes:

[0013] S21: Automatically detect and correct errors in the BIM model, and then perform lightweight processing on the model to enable the BIM model to run smoothly on AR devices.

[0014] S22: Import the BIM model into the AR device, capture images of the real world through the AR device's camera, use image recognition technology to find the real scene corresponding to the BIM model, intuitively display the details of the target building, and make further adjustments to the data of the target building based on the details.

[0015] Preferably, S3 includes:

[0016] S31: Decompose the overall construction plan into multiple sub-plans, and calculate the percentage of construction progress that each sub-plan should complete each day based on the overall construction plan and the expected completion time.

[0017] S32: Collect on-site construction information using data acquisition equipment and compare it with the construction progress simulated by AR equipment to obtain the deviation between the actual construction progress and the preset construction progress.

[0018] Preferably, S4 includes:

[0019] S41: When the gap is below a threshold, the management system calculates the growth rate of the gap.

[0020] If the growth rate is ≤0, the construction plan will continue.

[0021] If the growth rate is greater than 0, then proceed to step S42;

[0022] S42: When the gap is higher than the threshold or the growth rate of the gap is greater than 0, that is, when the gap increases gradually every day and eventually exceeds the threshold, the management system analyzes the factors that cause the construction progress deviation to be large compared with the preset construction progress deviation, and divides the factors into human factors and non-human factors.

[0023] If the issue is due to human error, the management system will intervene in real time.

[0024] If the cause is not human error, the management system will activate its emergency response plan.

[0025] A BIM model-based schedule management system, the system comprising:

[0026] Modeling device: Based on the parameters of the target building under construction, a BIM model of the target building is established;

[0027] Augmented Reality System: Using AR devices, virtual models from BIM are overlaid onto the real-world construction site, visually displaying the building structure.

[0028] The calculation system calculates the daily construction progress based on the expected completion time of the target building. At the same time, it simulates the on-site construction scene through AR equipment and compares the on-site construction photos collected by the data acquisition equipment with the simulated construction progress to obtain the construction progress deviation.

[0029] Emergency response system: compares the construction progress deviation with the construction progress deviation preset by the calculation system, determines whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold, and takes corresponding measures.

[0030] Preferably, the modeling apparatus includes:

[0031] Initial Files: Create project files in BIM and set up relevant project information;

[0032] Construction System: Based on the parameters of the target building, select the required materials and structures from the intelligent component library, and complete the construction of the target building in BIM.

[0033] Preferably, the augmented reality system includes:

[0034] Self-inspection system: Automatically detects BIM models, corrects errors in the models, and then performs lightweight processing on the models to enable the BIM models to run smoothly on AR devices;

[0035] Projection System: The BIM model is imported into the AR device, which captures images of the real world through its camera. Image recognition technology is used to find the real scene corresponding to the BIM model, intuitively displaying the details of the target building, and making further adjustments to the data of the target building based on these details.

[0036] Preferably, the calculation system includes:

[0037] The planning refinement system breaks down the overall construction plan into multiple sub-plans, and calculates the percentage of construction progress that each sub-plan should complete each day based on the overall construction plan and the expected completion time.

[0038] Deviation estimation system: It uses data acquisition equipment to collect on-site construction information and compares it with the construction progress simulated by AR equipment to obtain the deviation between the actual construction progress and the preset construction progress.

[0039] Preferably, the emergency response system includes:

[0040] The first response plan: When the gap falls below a threshold, the management system calculates the growth rate of the gap.

[0041] If the growth rate is ≤0, the construction plan will continue.

[0042] If the growth rate is greater than 0, then the second response plan will be executed;

[0043] Second response plan: When the gap is higher than the threshold or the growth rate of the gap is greater than 0, that is, when the gap gradually increases every day and eventually exceeds the threshold, the management system analyzes the factors that cause the construction progress deviation to be large compared with the preset construction progress deviation, and divides the factors into human factors and non-human factors.

[0044] If the issue is due to human error, the management system will intervene in real time.

[0045] If the cause is not human error, the management system will activate its emergency response plan.

[0046] Beneficial effects of the invention: By using BIM technology, the invention provides a basis for collaborative work for design teams and all parties involved in construction, including building operation units. It plays an important role in improving production efficiency, saving costs, and shortening construction period. By using AR technology, modeling becomes faster and more convenient, and a high degree of realism can be achieved. Attached Figure Description

[0047] Figure 1 This invention relates to a BIM model-based schedule management method. Detailed Implementation

[0048] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0049] One embodiment of the present invention provides a progress management method based on a BIM model, the method comprising:

[0050] S1: Based on the parameters of the target building under construction, establish a BIM model of the target building;

[0051] S2: Using AR devices, the virtual model in BIM is overlaid onto the real-world construction scene, visually displaying the building structure;

[0052] S3: The calculation system calculates the daily construction progress based on the expected completion time of the target building. At the same time, it simulates the on-site construction scene through AR equipment and compares the on-site construction photos collected by the data acquisition equipment with the simulated construction progress to obtain the construction progress deviation.

[0053] S4: Compare the construction progress deviation with the construction progress deviation preset by the calculation system, and determine whether the difference between the construction progress deviation and the preset construction progress deviation is higher than the threshold, and take corresponding measures.

[0054] The working principle and effects of the above technical solution are as follows: Based on the detailed parameters of the target building, including structure, dimensions, materials, and equipment, a precise virtual building model is constructed using BIM technology. Augmented Reality (AR) technology is then used to overlay the virtual building model from the BIM onto the real-world construction site. Through AR devices, construction workers can intuitively see the building structure to be constructed and even virtually roam the real environment, gaining a preliminary understanding of the building's spatial layout. The system automatically calculates the construction progress for each day or stage based on the target building's estimated completion time and project plan. AR devices simulate the on-site construction scene, and real-time photos or videos of the on-site construction are collected. This information is compared with the simulated construction progress by the calculation system to calculate the construction progress deviation. The calculated construction progress deviation is compared with the preset allowable deviation threshold of the calculation system. If the deviation is within the threshold range, it is considered normal, and the original plan continues; if the deviation exceeds the threshold, further analysis of the nature and cause of the deviation is required. Based on the nature and cause of the deviation, corresponding countermeasures are taken. This may include adjusting the construction plan, increasing construction resources, optimizing construction methods, and strengthening construction management. The goal is to quickly get the construction schedule back on track and ensure the project is completed on time. BIM technology considers multiple aspects of the project, including design, construction, and operation, enabling comprehensive information integration across all aspects. In schedule management, BIM technology can integrate schedule plans, material lists, construction drawings, and other information from various disciplines to form a holistic schedule. This comprehensive information integration helps to better coordinate the work and schedules of different disciplines, avoiding conflicts and delays, and improving construction efficiency. BIM technology can visualize all aspects of the project, including schedule plans, material lists, and construction drawings from various disciplines. This information can be visualized and presented in three-dimensional or even four-dimensional form using BIM technology, allowing managers to intuitively understand the project's progress and the specific work content and time requirements of each schedule item. This visualization helps to avoid interference from human factors in schedule management, improving the accuracy and reliability of project management.

[0055] In one embodiment of the present invention, S1 includes:

[0056] S11: Create project files in BIM and set relevant project information;

[0057] S12: Based on the parameters of the target building, select the required materials and structures from the intelligent component library, and complete the construction of the target building in BIM.

[0058] The working principle and effect of the above technical solution are as follows: First, a new project file is created in the BIM software. This usually involves selecting an appropriate template or creating a new blank project from scratch. In the project file, the user needs to set a series of project-related information, including, project name: a clear and unique identifier for the project.

[0059] Project Location: Describes the specific geographical location of the project.

[0060] Unit settings: Set the format and standard of units such as length, area, volume, and angle according to project requirements.

[0061] Project parameters: Define specific parameters related to the project, such as structure type, building materials, design standards, etc.

[0062] Drawing information: Set the name, number, scale, etc. of the drawing to facilitate the generation of construction drawings later.

[0063] Set up the project's storage path and backup strategy to ensure the security and recoverability of project data. Based on project requirements, input various parameters of the target building into the BIM software. Select appropriate components and materials from the intelligent component library according to the target building's parameters and design requirements. Assemble and construct the selected components and materials in the BIM software according to the design requirements to form a 3D model of the target building. During this process, various parameters and attributes of the model can be viewed and adjusted in real time to ensure they meet design requirements. After construction, verify and check the model to ensure that all parameters and attributes are set correctly. Simultaneously, utilize the simulation and analysis functions of the BIM software to perform structural analysis, energy consumption analysis, clash detection, etc., to identify potential problems and optimize the model. BIM technology can integrate information from all stages of a project, from design and construction to operation and maintenance, including data from various disciplines such as building structure, electrical, mechanical, and piping. This comprehensive information integration helps project managers better understand the overall project situation and provides comprehensive data support for schedule management. BIM models support multi-disciplinary collaboration, allowing designers from different disciplines to work on the same model, avoiding professional conflicts and duplication of work that may occur in traditional design. This collaborative approach helps shorten design cycles and improve design quality. BIM technology can generate 4D models, incorporating the time dimension into 3D models to simulate project schedules. This simulation helps project managers better plan timelines and resources, and promptly identify and resolve potential schedule issues. Furthermore, BIM technology can optimize schedules to ensure projects are completed on time.

[0064] In one embodiment of the present invention, S2 includes:

[0065] S21: Automatically detect and correct errors in the BIM model, and then perform lightweight processing on the model to enable the BIM model to run smoothly on AR devices.

[0066] S22: Import the BIM model into the AR device, capture images of the real world through the AR device's camera, use image recognition technology to find the real scene corresponding to the BIM model, intuitively display the details of the target building, and make further adjustments to the data of the target building based on the details.

[0067] The working principle and effect of the above technical solution are as follows: Utilizing the automatic detection function in BIM software, a comprehensive error and conflict check is performed on the BIM model. This typically includes geometric consistency checks, attribute consistency checks, spatial consistency checks, and specification compliance checks. Based on the detection results, the BIM software will automatically or prompt the user to manually correct errors and conflicts in the model. To ensure smooth operation of the BIM model on AR devices, it needs to be lightweighted. Lightweighting aims to reduce the model's data volume while maintaining necessary information and accuracy, including removing duplicate or unnecessary data and reducing storage space and computing resource consumption. The complexity of the model is reduced and operational efficiency is improved by optimizing the structure and details of the geometric data. Efficient data compression algorithms are used to minimize the model's data volume. A hierarchical storage structure is adopted to distribute model data across different levels to improve operational efficiency. The lightweighted BIM model is then imported into the AR device. The AR device captures images of the real world using its built-in camera. Image recognition technology is used to process and analyze the captured images to find the corresponding real-world scene in the BIM model. Precise alignment of the BIM model with the real-world scene ensures the virtual model is accurately overlaid. The BIM model is displayed intuitively via an AR device's screen or projection equipment. Users can observe detailed information about the target building, such as structure, materials, and dimensions, using AR devices. Users can interact with the BIM model using the AR device's interactive functions. Based on the observed details, users can further adjust and optimize the data in the BIM model. Automated inspection quickly identifies and marks errors and conflicts in the model, such as geometric inconsistencies, attribute errors, or code violations, ensuring the model's accuracy and integrity. Compared to traditional manual inspection, automated inspection significantly reduces manual workload, improves efficiency, and reduces the risk of human error. Lightweight processing significantly reduces the model's data size, improving display efficiency on resource-constrained platforms like AR devices and ensuring a smooth user experience. Overlaying the BIM model onto the real-world scene using AR devices provides users with a more intuitive and immersive experience, facilitating a better understanding of design schemes and site conditions. AR-based BIM model displays can provide more comprehensive information support, helping decision-makers more accurately evaluate design schemes, construction plans, or operation and maintenance strategies.

[0068] In one embodiment of the present invention, S3 includes:

[0069] S31: Decompose the overall construction plan into multiple sub-plans, and calculate the percentage of construction progress that each sub-plan should complete each day based on the overall construction plan and the expected completion time.

[0070] S32: Collect on-site construction information using data acquisition equipment and compare it with the construction progress simulated by AR equipment to obtain the deviation between the actual construction progress and the preset construction progress.

[0071] The working principle and effects of the above technical solution are as follows: First, the calculation system breaks down the complex construction process into multiple more specific and manageable sub-plans based on the overall construction plan and expected completion time. For each sub-plan, the calculation system further calculates the percentage of daily construction progress to be completed based on its total workload, required time, and resources. The daily progress targets of each sub-plan are then summarized to form a detailed progress schedule. At the construction site, various data acquisition devices are used to collect construction information in real time. Simultaneously, augmented reality (AR) technology is used to simulate the current construction progress. AR technology can reproduce the actual situation of the construction site in a virtual environment and dynamically display the construction progress according to the preset construction plan. Through AR technology, the project management team can intuitively see the virtual representation of the current construction progress. The actual collected construction information is compared with the construction progress simulated by AR technology. Through comparison, the deviation between the actual construction progress and the preset progress can be clearly seen. These deviations may manifest as different situations such as delays, advancements, or conformity with the preset progress. Once a deviation between the actual construction progress and the preset progress is found, the project management team needs to immediately analyze the cause of the deviation. These reasons may include changes in construction conditions, insufficient resource supply, and difficulties in construction technology. By breaking down the overall construction plan into multiple sub-plans, the construction tasks and objectives of each stage can be more clearly defined, making the construction plan more precise and easier to execute. Setting a daily percentage of construction progress to be completed for each sub-plan helps the construction team clarify daily work priorities and progress requirements, improving construction efficiency. Using data acquisition equipment to collect on-site construction information in real time can accurately reflect the actual situation on the construction site, providing reliable data support for monitoring construction progress. Comparing the actual construction progress with the construction progress simulated by AR technology allows for immediate detection and analysis of deviations, helping the project management team to take timely adjustment measures to ensure that the construction progress remains consistent with the plan. Simulating construction progress through AR technology makes the construction management process more transparent, helping all parties involved to understand the construction progress and existing problems.

[0072] In one embodiment of the present invention, S4 includes:

[0073] S41: When the gap is below a threshold, the management system calculates the growth rate of the gap.

[0074] If the growth rate is ≤0, the construction plan will continue.

[0075] If the growth rate is greater than 0, then proceed to step S42;

[0076] S42: When the gap is higher than the threshold or the growth rate of the gap is greater than 0, that is, when the gap increases gradually every day and eventually exceeds the threshold, the management system analyzes the factors that cause the construction progress deviation to be large compared with the preset construction progress deviation, and divides the factors into human factors and non-human factors.

[0077] If the issue is due to human error, the management system will intervene in real time.

[0078] If the cause is not human error, the management system will activate its emergency response plan.

[0079] The working principle and effects of the above technical solution are as follows:

[0080] One embodiment of the present invention provides a BIM model-based progress management system, the system comprising:

[0081] Modeling device: Based on the parameters of the target building under construction, a BIM model of the target building is established;

[0082] Augmented Reality System: Using AR devices, virtual models from BIM are overlaid onto the real-world construction site, visually displaying the building structure.

[0083] The calculation system calculates the daily construction progress based on the expected completion time of the target building. At the same time, it simulates the on-site construction scene through AR equipment and compares the on-site construction photos collected by the data acquisition equipment with the simulated construction progress to obtain the construction progress deviation.

[0084] Emergency response system: compares the construction progress deviation with the construction progress deviation preset by the calculation system, determines whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold, and takes corresponding measures.

[0085] The working principle and effects of the above technical solution are as follows: Based on the detailed parameters of the target building, including structure, dimensions, materials, and equipment, a precise virtual building model is constructed using BIM technology. Augmented Reality (AR) technology is then used to overlay the virtual building model from the BIM onto the real-world construction site. Through AR devices, construction workers can intuitively see the building structure to be constructed and even virtually roam the real environment, gaining a preliminary understanding of the building's spatial layout. The system automatically calculates the construction progress for each day or stage based on the target building's estimated completion time and project plan. AR devices simulate the on-site construction scene, and real-time photos or videos of the on-site construction are collected. This information is compared with the simulated construction progress by the calculation system to calculate the construction progress deviation. The calculated construction progress deviation is compared with the preset allowable deviation threshold of the calculation system. If the deviation is within the threshold range, it is considered normal, and the original plan continues; if the deviation exceeds the threshold, further analysis of the nature and cause of the deviation is required. Based on the nature and cause of the deviation, corresponding countermeasures are taken. This may include adjusting the construction plan, increasing construction resources, optimizing construction methods, and strengthening construction management. The goal is to quickly get the construction schedule back on track and ensure the project is completed on time. BIM technology considers multiple aspects of the project, including design, construction, and operation, enabling comprehensive information integration across all aspects. In schedule management, BIM technology can integrate schedule plans, material lists, construction drawings, and other information from various disciplines to form a holistic schedule. This comprehensive information integration helps to better coordinate the work and schedules of different disciplines, avoiding conflicts and delays, and improving construction efficiency. BIM technology can visualize all aspects of the project, including schedule plans, material lists, and construction drawings from various disciplines. This information can be visualized and presented in three-dimensional or even four-dimensional form using BIM technology, allowing managers to intuitively understand the project's progress and the specific work content and time requirements of each schedule item. This visualization helps to avoid interference from human factors in schedule management, improving the accuracy and reliability of project management.

[0086] In one embodiment of the present invention, the modeling apparatus includes:

[0087] Initial Files: Create project files in BIM and set up relevant project information;

[0088] Construction System: Based on the parameters of the target building, select the required materials and structures from the intelligent component library, and complete the construction of the target building in BIM.

[0089] The working principle and effect of the above technical solution are as follows: First, a new project file is created in the BIM software. This usually involves selecting an appropriate template or creating a new blank project from scratch. In the project file, the user needs to set a series of project-related information, including, project name: a clear and unique identifier for the project.

[0090] Project Location: Describes the specific geographical location of the project.

[0091] Unit settings: Set the format and standard of units such as length, area, volume, and angle according to project requirements.

[0092] Project parameters: Define specific parameters related to the project, such as structure type, building materials, design standards, etc.

[0093] Drawing information: Set the name, number, scale, etc. of the drawing to facilitate the generation of construction drawings later.

[0094] Set up the project's storage path and backup strategy to ensure the security and recoverability of project data. Based on project requirements, input various parameters of the target building into the BIM software. Select appropriate components and materials from the intelligent component library according to the target building's parameters and design requirements. Assemble and construct the selected components and materials in the BIM software according to the design requirements to form a 3D model of the target building. During this process, various parameters and attributes of the model can be viewed and adjusted in real time to ensure they meet design requirements. After construction, verify and check the model to ensure that all parameters and attributes are set correctly. Simultaneously, utilize the simulation and analysis functions of the BIM software to perform structural analysis, energy consumption analysis, clash detection, etc., to identify potential problems and optimize the model. BIM technology can integrate information from all stages of a project, from design and construction to operation and maintenance, including data from various disciplines such as building structure, electrical, mechanical, and piping. This comprehensive information integration helps project managers better understand the overall project situation and provides comprehensive data support for schedule management. BIM models support multi-disciplinary collaboration, allowing designers from different disciplines to work on the same model, avoiding professional conflicts and duplication of work that may occur in traditional design. This collaborative approach helps shorten design cycles and improve design quality. BIM technology can generate 4D models, incorporating the time dimension into 3D models to simulate project schedules. This simulation helps project managers better plan timelines and resources, and promptly identify and resolve potential schedule issues. Furthermore, BIM technology can optimize schedules to ensure projects are completed on time.

[0095] In one embodiment of the present invention, the augmented reality system includes:

[0096] Self-inspection system: Automatically detects BIM models, corrects errors in the models, and then performs lightweight processing on the models to enable the BIM models to run smoothly on AR devices;

[0097] Projection System: The BIM model is imported into the AR device, which captures images of the real world through its camera. Image recognition technology is used to find the real scene corresponding to the BIM model, intuitively displaying the details of the target building, and making further adjustments to the data of the target building based on these details.

[0098] The working principle and effect of the above technical solution are as follows: Utilizing the automatic detection function in BIM software, a comprehensive error and conflict check is performed on the BIM model. This typically includes geometric consistency checks, attribute consistency checks, spatial consistency checks, and specification compliance checks. Based on the detection results, the BIM software will automatically or prompt the user to manually correct errors and conflicts in the model. To ensure smooth operation of the BIM model on AR devices, it needs to be lightweighted. Lightweighting aims to reduce the model's data volume while maintaining necessary information and accuracy, including removing duplicate or unnecessary data and reducing storage space and computing resource consumption. The complexity of the model is reduced and operational efficiency is improved by optimizing the structure and details of the geometric data. Efficient data compression algorithms are used to minimize the model's data volume. A hierarchical storage structure is adopted to distribute model data across different levels to improve operational efficiency. The lightweighted BIM model is then imported into the AR device. The AR device captures images of the real world using its built-in camera. Image recognition technology is used to process and analyze the captured images to find the corresponding real-world scene in the BIM model. Precise alignment of the BIM model with the real-world scene ensures the virtual model is accurately overlaid. The BIM model is displayed intuitively via an AR device's screen or projection equipment. Users can observe detailed information about the target building, such as structure, materials, and dimensions, using AR devices. Users can interact with the BIM model using the AR device's interactive functions. Based on the observed details, users can further adjust and optimize the data in the BIM model. Automated inspection quickly identifies and marks errors and conflicts in the model, such as geometric inconsistencies, attribute errors, or code violations, ensuring the model's accuracy and integrity. Compared to traditional manual inspection, automated inspection significantly reduces manual workload, improves efficiency, and reduces the risk of human error. Lightweight processing significantly reduces the model's data size, improving display efficiency on resource-constrained platforms like AR devices and ensuring a smooth user experience. Overlaying the BIM model onto the real-world scene using AR devices provides users with a more intuitive and immersive experience, facilitating a better understanding of design schemes and site conditions. AR-based BIM model displays can provide more comprehensive information support, helping decision-makers more accurately evaluate design schemes, construction plans, or operation and maintenance strategies.

[0099] In one embodiment of the present invention, the calculation system includes:

[0100] The planning refinement system breaks down the overall construction plan into multiple sub-plans, and calculates the percentage of construction progress that each sub-plan should complete each day based on the overall construction plan and the expected completion time.

[0101] Deviation estimation system: It uses data acquisition equipment to collect on-site construction information and compares it with the construction progress simulated by AR equipment to obtain the deviation between the actual construction progress and the preset construction progress.

[0102] The working principle and effects of the above technical solution are as follows: First, the calculation system breaks down the complex construction process into multiple more specific and manageable sub-plans based on the overall construction plan and expected completion time. For each sub-plan, the calculation system further calculates the percentage of daily construction progress to be completed based on its total workload, required time, and resources. The daily progress targets of each sub-plan are then summarized to form a detailed progress schedule. At the construction site, various data acquisition devices are used to collect construction information in real time. Simultaneously, augmented reality (AR) technology is used to simulate the current construction progress. AR technology can reproduce the actual situation of the construction site in a virtual environment and dynamically display the construction progress according to the preset construction plan. Through AR technology, the project management team can intuitively see the virtual representation of the current construction progress. The actual collected construction information is compared with the construction progress simulated by AR technology. Through comparison, the deviation between the actual construction progress and the preset progress can be clearly seen. These deviations may manifest as different situations such as delays, advancements, or conformity with the preset progress. Once a deviation between the actual construction progress and the preset progress is found, the project management team needs to immediately analyze the cause of the deviation. These reasons may include changes in construction conditions, insufficient resource supply, and difficulties in construction technology. By breaking down the overall construction plan into multiple sub-plans, the construction tasks and objectives of each stage can be more clearly defined, making the construction plan more precise and easier to execute. Setting a daily percentage of construction progress to be completed for each sub-plan helps the construction team clarify daily work priorities and progress requirements, improving construction efficiency. Using data acquisition equipment to collect on-site construction information in real time can accurately reflect the actual situation on the construction site, providing reliable data support for monitoring construction progress. Comparing the actual construction progress with the construction progress simulated by AR technology allows for immediate detection and analysis of deviations, helping the project management team to take timely adjustment measures to ensure that the construction progress remains consistent with the plan. Simulating construction progress through AR technology makes the construction management process more transparent, helping all parties involved to understand the construction progress and existing problems.

[0103] In one embodiment of the present invention, the emergency response system includes:

[0104] The first response plan: When the gap falls below a threshold, the management system calculates the growth rate of the gap.

[0105] If the growth rate is ≤0, the construction plan will continue.

[0106] If the growth rate is greater than 0, then the second response plan will be executed;

[0107] Second response plan: When the gap is higher than the threshold or the growth rate of the gap is greater than 0, that is, when the gap gradually increases every day and eventually exceeds the threshold, the management system analyzes the factors that cause the construction progress deviation to be large compared with the preset construction progress deviation, and divides the factors into human factors and non-human factors.

[0108] If the issue is due to human error, the management system will intervene in real time.

[0109] If the cause is not human error, the management system will activate its emergency response plan.

[0110] In the BIM-based progress management system, the emergency response system dynamically adjusts thresholds to better adapt to actual construction conditions. Furthermore, the calculation formula for the dynamically adjusted thresholds is as follows:

[0111] T = T0 + K × α

[0112] Where T represents the adjusted threshold, T0 represents the initial threshold, K represents the adjustment coefficient, and α represents the adjustment factor.

[0113] Furthermore, the adjustment coefficient K can be obtained using the following formula:

[0114]

[0115] Among them, E i represents the absolute deviation in the i-th observation period, N represents the most recent N observation periods, β represents the volatility adjustment factor, i.e. the contribution of the volatility of the deviation to the threshold adjustment, and V represents the variance of the deviation in the most recent N observation periods, which is used to measure the stability or volatility of the deviation.

[0116] Furthermore, the absolute deviation E i It can be obtained through the following formula:

[0117] |E i |=|U i -P i |

[0118] Among them, U i P represents the actual construction progress during the i-th observation period. i This represents the preset construction progress for the i-th observation period;

[0119] When 0.5 < T ≤ 1, it indicates that the emergency management system has a high tolerance for construction progress deviations and will continue the construction plan.

[0120] When 0 < T ≤ 0.5, it indicates that the emergency management system has a low tolerance for deviations in construction progress, and the emergency management system will activate emergency response measures.

[0121] The working principle and effect of the above technical solution are as follows: When the difference between the actual construction progress and the preset progress is lower than a set threshold, the management system first calculates the growth rate of this difference. Growth rate ≤ 0: This indicates that the construction progress is proceeding as planned or ahead of schedule; no special measures are needed, and the current construction plan continues. Growth rate > 0: This indicates that the construction progress is starting to lag behind the plan, and the gap is showing a widening trend; in this case, a second response plan needs to be implemented. When the difference between the actual construction progress and the preset progress is higher than the threshold, or the growth rate of the gap is greater than 0 (i.e., the gap is predicted to widen and exceed the threshold in the future), the management system conducts an in-depth analysis of the specific factors causing the construction progress deviation. Human factors: such as insufficient construction personnel, substandard skill levels, poor management, etc. For these factors, the management system will intervene in real time, such as adjusting personnel allocation, strengthening skills training, and optimizing management processes. Other factors: such as weather changes, material supply delays, equipment failures, etc. For these factors, the management system will activate emergency plans, including adjusting the construction plan, urgently procuring materials, and repairing or replacing equipment. The system can monitor the construction progress in real time and compare it with the preset progress; once a deviation exceeds the threshold or the growth rate is unfavorable, the response plan is immediately triggered. This real-time capability ensures that problems can be detected and resolved promptly. Dynamically adjusting thresholds based on actual construction conditions makes the system more flexible and adaptable. This dynamism helps to more accurately reflect the actual construction progress and improve the precision of emergency response. The system can deeply analyze the specific factors causing deviations in construction schedules, categorizing them into human and non-human factors. This precision helps project managers address problems effectively with targeted measures. For human factors, the system can intervene in real time; for non-human factors, it can activate corresponding emergency plans. This targeted approach can more effectively solve problems and reduce unnecessary waste and losses. Through real-time monitoring and precise analysis, the system can quickly make decisions and execute corresponding response plans. This efficiency helps to quickly resolve deviations in construction schedules and prevent problems from escalating.

[0122] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A progress management method based on a BIM model, characterized by, The method comprises: S1: establishing a BIM model of the target building based on parameters of the target building; S2: superimposing a virtual model in the BIM on a real scene to be constructed through an AR device to intuitively display the building structure; S3: a calculation system calculates the construction progress of each day according to the expected completion time of the target building, and simulates the construction scene on site through the AR device, and compares the construction progress simulated by the AR device with the construction information collected by the collection device to obtain the construction progress deviation; S4: comparing the construction progress deviation with the preset construction progress deviation of the calculation system, and determining whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold value, and taking corresponding measures, and dynamically adjusting the threshold value in the progress management system based on the BIM model to better adapt to the actual construction situation; and the calculation formula of the dynamically adjusted threshold value is as follows: wherein T denotes an adjusted threshold value, denotes an initial threshold value, K denotes an adjustment coefficient, and a denotes an adjustment factor And the adjustment coefficient K can be obtained by the following formula: wherein, denotes the absolute deviation in the i-th observation period, N denotes the last N observation periods, β denotes a volatility adjustment factor, i.e. the contribution of the volatility of the deviation to the adjustment of the threshold, V denotes the variance of the deviation in the last N observation periods, for measuring the stability or volatility of the deviation; And, the absolute deviation may be obtained by the following equation: wherein, represents the actual construction progress of the i-th observation period, represents the preset construction progress of the i-th observation period; When 0.5 < T ≤ 1, it means that the tolerance of the emergency management system to the construction progress deviation is high, and the construction plan is continued; When 0 < T ≤ 0.5, it means that the tolerance of the emergency management system to the construction progress deviation is low, and the emergency management system will start the emergency treatment measures.

2. The progress management method based on a BIM model according to claim 1, characterized by, The S1 comprises: S11: creating a project file in BIM and setting the relevant information of the project; S12: selecting the required materials and structures in the intelligent component library according to the parameters of the target building, and completing the construction of the target building in BIM.

3. The progress management method based on a BIM model according to claim 1, characterized by, The S2 comprises: S21: automatically detecting the BIM model and correcting the errors in the model, and then performing lightweight processing on the model to make the BIM model run smoothly on the AR device; S22: importing the BIM model into the AR device, capturing the images of the real world through the camera of the AR device, finding the corresponding real scene of the BIM model by using image recognition technology, intuitively displaying the details of the target building, and further adjusting the data of the target building according to the details.

4. The progress management method based on a BIM model according to claim 1, characterized by, The S3 comprises: S31: decomposing the overall construction plan into multiple sub-plans, and calculating the construction progress percentage of each sub-plan per day according to the overall construction plan and the expected completion time; S32: collecting the on-site construction information by using the data collection device, and comparing it with the construction progress simulated by the AR device to obtain the deviation between the actual construction progress and the preset construction progress.

5. The progress management method based on a BIM model according to claim 1, characterized by, The S4 comprises: S41: when the difference is lower than the threshold value, the management system calculates the growth rate of the difference, If the growth rate ≤ 0, continue the construction plan; If the growth rate > 0, proceed to step S42; S42: when the difference is higher than the threshold value or the growth rate of the difference > 0, i.e. the difference increases gradually every day and will eventually exceed the threshold value, the management system analyzes the factors causing the large difference between the construction progress deviation and the preset construction progress deviation, and divides the factors into artificial factors and non-artificial factors; If it is an artificial factor, the management system intervenes in real time; If it is not a human factor, the management system starts an emergency plan.

6. A progress management system based on a BIM model, characterized by, The system comprises: a modeling device: establishing a BIM model of the target building based on the parameters of the target building; an augmented reality system: superimposing the virtual model in the BIM onto the real scene to be constructed through an AR device, and intuitively displaying the building structure; a calculation system: calculating the construction progress of each day according to the expected completion time of the target building, and simulating the construction scene on site through the AR device, and comparing the construction progress simulated by the AR device with the construction information collected by the data collection device to obtain the construction progress deviation; an emergency handling system: comparing the construction progress deviation with the preset construction progress deviation of the calculation system, and judging whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold value, and taking corresponding measures; and dynamically adjusting the threshold value in the progress management system based on the BIM model to better adapt to the actual construction situation; and the calculation formula of the dynamically adjusted threshold value is as follows: wherein T denotes an adjusted threshold value, denotes an initial threshold value, K denotes an adjustment coefficient, and a denotes an adjustment factor And the adjustment coefficient K can be obtained by the following formula: wherein, represents the absolute deviation in the i-th observation period, N represents the last N observation periods, β represents a volatility adjustment factor, i.e., the contribution of the volatility of the deviation to the threshold adjustment, V represents the variance of the deviation in the last N observation periods, for measuring the stability or volatility of the deviation; And, the absolute deviation may be obtained by the following equation: wherein, represents the actual construction progress of the i-th observation period, represents the preset construction progress of the i-th observation period; When 0.5 < T ≤ 1, it means that the tolerance of the emergency management system to the construction progress deviation is high, and the construction plan is continued; When 0 < T ≤ 0.5, it means that the tolerance of the emergency management system to the construction progress deviation is low, and the emergency handling measures will be started.

7. The progress management system based on a BIM model according to claim 6, characterized by, The modeling device comprises: an initial file: creating a project file in BIM and setting the relevant information of the project; a construction system: selecting the required materials and structures in the intelligent component library according to the parameters of the target building, and completing the construction of the target building in BIM.

8. The progress management system based on a BIM model according to claim 6, characterized in that The augmented reality system comprises: a self-checking system: automatically detecting the BIM model and correcting errors in the model, and then performing lightweight processing on the model to enable the BIM model to run smoothly on the AR device; a projection system: importing the BIM model into the AR device, capturing the images of the real world through the camera of the AR device, finding the corresponding real scene of the BIM model using image recognition technology, and intuitively displaying the details of the target building, and further adjusting the data of the target building according to the details.

9. The progress management system based on a BIM model according to claim 6, characterized in that The calculation system comprises: a plan refinement system: decomposing the overall construction plan into multiple sub-plans, and calculating the construction progress percentage of each sub-plan per day according to the overall construction plan and the expected completion time; a deviation calculation system: collecting on-site construction information using a data collection device, and comparing it with the construction progress simulated by the AR device to obtain the deviation between the actual construction progress and the preset construction progress.

10. The progress management system based on a BIM model according to claim 6, characterized in that The emergency handling system comprises: a first response plan: when the difference is lower than the threshold value, the management system calculates the growth rate of the difference, If the growth rate ≤ 0, continue the construction plan; If the growth rate > 0, execute the second response plan; The second response plan: when the gap is higher than the threshold value or the growth rate of the gap is greater than 0, i.e. the gap of each day is gradually increased and finally will exceed the threshold value, the management system analyzes the factors causing the construction progress deviation and the preset construction progress deviation gap, and divides the factors into human factors and non-human factors; If it is a human factor, the management system carries out real-time intervention; If it is a non-human factor, the management system starts an emergency plan.

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