Progress management method and system based on BIM model

Abstract

The invention provides a progress management method and system based on a BIM model, and the method comprises the steps: S1, building the BIM model of a target building based on the parameters of the constructed target building; s2, superposing the virtual model in the BIM into a to-be-constructed scene in reality through AR equipment, and visually displaying a building structure; s3, the calculation system calculates the construction progress of each day according to the predicted completion time of the target building, simulates a site construction scene through AR equipment, and carries out conformity comparison on site construction photo information collected by collection equipment and the simulated construction progress to obtain a construction progress deviation; and S4, comparing the construction progress deviation with the preset construction progress deviation of the calculation system, judging whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold value or not, and taking corresponding measures. According to the invention, the engineering project can be managed quickly, accurately and visually through the BMI.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction management, and in particular to a progress management method and system based on a BIM model. Background Art

[0002] In the traditional construction industry, construction progress management has always been a key link in project management, directly related to the cost, quality and delivery time of the project. However, during the construction process of many companies, there are problems such as insufficient in-depth analysis of construction progress data, reliance on manual records, delayed data updates, and difficulty in reflecting the construction site situation in real time. These problems not only increase the difficulty of management, but also reduce management efficiency, making it difficult to adapt to the increasingly complex and rapidly changing needs of modern construction projects. Summary of the invention

[0003] In view of the above technical problems, the present invention proposes a progress management method and system based on the BIM model to solve the problem that the construction progress data analysis in the prior art is not deep enough and the construction progress cannot be effectively managed. The technical solutions adopted are as follows:

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

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

[0006] S2: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure;

[0007] S3: The estimation system estimates the daily construction progress based on the estimated 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 photo information collected by the 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 estimation system, determine whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold, and take corresponding measures.

[0009] Preferably, the S1 includes:

[0010] S11: Create a project file in BIM and set relevant information of the project;

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

[0012] Preferably, S2 includes:

[0013] S21: Automatically detect the BIM model, correct errors in the model, and then perform lightweight processing on the model so that the BIM model runs smoothly on the AR device;

[0014] S22: Import the BIM model into the AR device, capture the image of the real world through the camera of the AR device, use image recognition technology to find the real scene corresponding to the BIM model, intuitively display the details of the target building, and further adjust the data of the target building according to 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 should be completed daily for each sub-plan based on the overall construction plan and the estimated completion time;

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

[0018] Preferably, the S4 includes:

[0019] S41: When the gap is lower than a threshold, the management system calculates a 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, proceed to step S42;

[0022] S42: When the gap is higher than a threshold or the growth rate of the gap is greater than 0, that is, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors causing the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors;

[0023] If it is a human factor, the management system will intervene in real time;

[0024] If it is a non-human factor, the management system will initiate an emergency plan.

[0025] A progress management system based on a BIM model, the system comprising:

[0026] Modeling device: based on the parameters of the target building under construction, establish a BIM model of the target building;

[0027] Augmented reality system: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure;

[0028] Estimation system: The estimation system estimates the daily construction progress based on the estimated 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 photo information collected by the acquisition equipment with the simulated construction progress to obtain the construction progress deviation;

[0029] Emergency handling system: compares the construction progress deviation with the construction progress deviation preset by the estimation 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 device comprises:

[0031] Initial file: Create a project file in BIM and set relevant information of the project;

[0032] Construction system: According to the parameters of the target building, select the required materials and structures in the intelligent component library and complete the construction of the target building in BIM.

[0033] Preferably, the augmented reality system comprises:

[0034] Self-check system: automatically checks the BIM model, corrects errors in the model, and then performs lightweight processing on the model so that the BIM model can run smoothly on the AR device;

[0035] Projection system: Import the BIM model into the AR device, capture the image of the real world through the camera of the AR device, 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.

[0036] Preferably, the calculation system comprises:

[0037] Plan refinement system: The overall construction plan is broken down into multiple sub-plans. Based on the overall construction plan and the estimated completion time, the percentage of construction progress that should be completed daily for each sub-plan is calculated;

[0038] Deviation calculation system: Use data acquisition equipment to collect on-site construction information 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.

[0039] Preferably, the emergency handling system comprises:

[0040] First response plan: When the gap is lower than the 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, the second response plan is 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, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors that cause the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors;

[0044] If it is a human factor, the management system will intervene in real time;

[0045] If it is a non-human factor, the management system will initiate an emergency plan.

[0046] Beneficial effects of the invention: The invention uses BIM technology to provide a basis for collaborative work for the design team and various construction entities including the building operating unit, and 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 sense of reality can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a progress management method based on the BIM model described in the present invention. DETAILED DESCRIPTION

[0048] 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.

[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, a BIM model of the target building is established;

[0051] S2: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure;

[0052] S3: The estimation system estimates the daily construction progress based on the estimated 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 photo information collected by the 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 estimation system, determine whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold, and take corresponding measures.

[0054] The working principle and effect of the above technical solution are as follows: according to the detailed parameters of the construction target building, including structure, size, material, and equipment, an accurate virtual building model is constructed using BIM technology. Using augmented reality (AR) technology, the virtual building model in BIM is superimposed on the real construction scene. Through AR equipment, construction personnel can intuitively see the building structure to be built, and even conduct virtual roaming in the real environment to perceive and understand the spatial layout of the building in advance. The system automatically calculates the construction progress of each day or each stage according to the expected completion time and project plan of the target building. The on-site construction scene is simulated by AR equipment, and on-site construction photos or video information is collected in real time through acquisition equipment. This information is compared with the construction progress simulated by the calculation system for compliance, and the construction progress deviation is calculated. The calculated construction progress deviation is compared with the allowable deviation threshold preset by the calculation system. If the deviation is within the threshold range, it is considered normal and continues to be executed according to the original plan; if the deviation exceeds the threshold, it is necessary to further determine the nature and cause of the deviation. According to the nature and cause of the deviation, take corresponding countermeasures. This may include adjusting the construction plan, increasing construction resources, optimizing construction methods, strengthening construction management, etc. The purpose is to bring the construction progress back on track as soon as possible and ensure that the project can be completed on time. BIM technology considers multiple aspects of the project, such as design, construction, operation and maintenance, and can integrate information from all aspects of the project. In schedule management, BIM technology can integrate information such as schedule plans, material lists, construction drawings, etc. of various disciplines to form an overall schedule. This comprehensive information integration helps to better coordinate the work and progress between various disciplines, avoid conflicts and delays, and improve construction efficiency. BIM technology can visualize all aspects of the project, including schedule plans, material lists, construction drawings, etc. of various disciplines. This information can be visualized and presented in three or even four dimensions through BIM technology, so that managers can intuitively understand the progress of the project and the specific work content and time requirements of each schedule. This visual display helps to avoid interference from human factors in schedule management and improve the accuracy and reliability of project management.

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

[0056] S11: Create a project file in BIM and set relevant information of the project;

[0057] S12: According to the parameters of the target building, select the required materials and structures in 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, create a new project file 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 the project name: a clear unique identifier for the project.

[0059] Project Location: Describe the specific geographic location of the project.

[0060] Unit settings: Set the format and standard of units such as length, area, volume, angle, etc. 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 drawing name, number, scale, etc. to facilitate the subsequent generation of construction drawings.

[0063] Set the storage path and backup strategy of the project to ensure the security and recoverability of the project data. According to the project requirements, the various parameters of the target building are input into the BIM software, and the appropriate components and materials are selected in the intelligent component library according to the parameters and design requirements of the target building. The selected components and materials are assembled and constructed in the BIM software according to the design requirements to form a three-dimensional model of the target building. In this process, the various parameters and properties of the model can be viewed and adjusted in real time to ensure that it meets the design requirements. After the construction is completed, the model is verified and checked to ensure that the parameters and properties are set correctly. At the same time, the simulation and analysis functions of the BIM software can be used to perform structural analysis, energy consumption analysis, collision detection, etc. on the model to find potential problems and optimize them. BIM technology can integrate information from various stages of the project from design, construction to operation and maintenance, including data from various disciplines such as the structure, electrical, mechanical, and piping of the building. This comprehensive information integration helps project managers better understand the overall situation of the project and provide comprehensive data support for progress management. The BIM model supports multi-disciplinary collaboration, and designers from different disciplines can work on the same model, avoiding professional conflicts and duplication of work that may occur in traditional design. This collaborative working method helps shorten the design cycle and improve design quality. BIM technology can generate 4D models, that is, adding the time dimension to the 3D model to simulate the project schedule. This simulation helps project managers better plan the construction period and resources, and timely discover and solve potential schedule problems. At the same time, BIM technology can also optimize the schedule to ensure that the project can be completed on time.

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

[0065] S21: Automatically detect the BIM model, correct errors in the model, and then perform lightweight processing on the model so that the BIM model runs smoothly on the AR device;

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

[0067] The working principle and effect of the above technical solution are: using the automatic detection function in the BIM software to perform a comprehensive error and conflict check on the BIM model. This usually includes geometric consistency check, attribute consistency check, spatial consistency check and specification compliance check. According to the detection results, the BIM software will automatically or prompt the user to manually correct the errors and conflicts in the model. In order to make the BIM model run smoothly on the AR device, it needs to be lightweight. Lightweight processing aims to reduce the amount of data in the model while maintaining the necessary information and accuracy of the model, including deleting duplicate or unnecessary data in the model and reducing the storage space and computing resources. By optimizing the structure and details of the geometric data, the complexity of the model is reduced and the operation efficiency is improved. Use an efficient data compression algorithm to compress the data volume of the model to a minimum. Use a hierarchical storage structure to disperse the model data into different levels to improve the operation efficiency. Import the lightweight BIM model into the AR device. The AR device captures images of the real world through its built-in camera. Using image recognition technology, the captured images are processed and analyzed to find the real scene corresponding to the BIM model. Accurately align the BIM model with the real scene to ensure that the virtual model can be accurately superimposed on the real scene. The BIM model is displayed in an intuitive way through the display screen or projection device of the AR device. Users can observe the detailed information of the target building, such as structure, material, size, etc. through the AR device. Users can interact with the BIM model through the interactive function of the AR device. Based on the observed detailed information, users can further adjust and optimize the data in the BIM model. Automatic detection can quickly identify and mark errors and conflicts in the model, such as geometric inconsistencies, attribute errors, or specification violations, to ensure the accuracy and completeness of the model. Compared with traditional manual inspection, automatic detection can greatly reduce manual workload, improve work efficiency, and reduce the risk of human error. Lightweight processing can significantly reduce the amount of data in the model, improve display efficiency on resource-constrained platforms such as AR devices, and ensure a smooth operation experience. Superimposing the BIM model on the real scene through the AR device provides users with a more intuitive and immersive experience, which helps to better understand the design plan and on-site conditions. The BIM model display based on AR devices can provide more comprehensive information support, helping decision makers to more accurately evaluate design plans, 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 should be completed daily for each sub-plan based on the overall construction plan and the estimated completion time;

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

[0071] The working principle and effect of the above technical solution are as follows: First, the calculation system will decompose the complex construction process into multiple more specific and easier to manage sub-plans based on the overall construction plan and the expected completion time. For each sub-plan, the calculation system will further calculate the percentage of construction progress that should be completed every day based on its overall workload, required time and resources. The daily progress targets of each sub-plan are summarized to form a detailed schedule. At the construction site, various data acquisition devices are used to collect construction information in real time. At the same time, 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. Compare the actual collected construction information with the construction progress simulated by AR technology. By comparison, the deviation between the actual construction progress and the preset progress can be clearly seen. These deviations may be manifested in different situations such as delayed progress, early progress or consistency with the preset progress. Once it is found that the actual construction progress deviates from the preset progress, 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 goals of each stage can be more specifically defined, making the construction plan more accurate and easier to execute. Setting a percentage of construction progress to be completed daily for each sub-plan helps the construction team clarify daily work priorities and progress requirements and improve construction efficiency. Using data acquisition equipment to collect on-site construction information in real time can accurately reflect the actual situation of the construction site and provide reliable data support for monitoring the construction progress. Comparing the actual construction progress with the construction progress simulated by AR technology can instantly discover deviations and analyze them, which helps the project management team take timely adjustment measures to ensure that the construction progress is consistent with the plan. Simulating the construction progress through AR technology makes the construction management process more transparent and helps all parties involved understand the construction progress and existing problems.

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

[0073] S41: When the gap is lower than a threshold, the management system calculates a 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, proceed to step S42;

[0076] S42: When the gap is higher than a threshold or the growth rate of the gap is greater than 0, that is, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors causing the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors;

[0077] If it is a human factor, the management system will intervene in real time;

[0078] If it is a non-human factor, the management system will initiate an emergency plan.

[0079] The working principle and effect of the above technical solution are:

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

[0081] Modeling device: based on the parameters of the target building under construction, establish a BIM model of the target building;

[0082] Augmented reality system: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure;

[0083] Calculation system: The calculation system calculates the daily construction progress according to the estimated completion time of the target building, and simulates the on-site construction scene through AR equipment. The on-site construction photo information collected by the acquisition equipment is compared with the simulated construction progress to obtain the construction progress deviation;

[0084] Emergency handling system: compares the construction progress deviation with the construction progress deviation preset by the estimation 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 effect of the above technical solution are as follows: according to the detailed parameters of the construction target building, including structure, size, material, and equipment, an accurate virtual building model is constructed using BIM technology. Using augmented reality (AR) technology, the virtual building model in BIM is superimposed on the real construction scene. Through AR equipment, construction personnel can intuitively see the building structure to be built, and even conduct virtual roaming in the real environment to perceive and understand the spatial layout of the building in advance. The system automatically calculates the construction progress of each day or each stage according to the expected completion time and project plan of the target building. The on-site construction scene is simulated by AR equipment, and on-site construction photos or video information is collected in real time through acquisition equipment. This information is compared with the construction progress simulated by the calculation system for compliance, and the construction progress deviation is calculated. The calculated construction progress deviation is compared with the allowable deviation threshold preset by the calculation system. If the deviation is within the threshold range, it is considered normal and continues to be executed according to the original plan; if the deviation exceeds the threshold, it is necessary to further determine the nature and cause of the deviation. According to the nature and cause of the deviation, take corresponding countermeasures. This may include adjusting the construction plan, increasing construction resources, optimizing construction methods, strengthening construction management, etc. The purpose is to bring the construction progress back on track as soon as possible and ensure that the project can be completed on time. BIM technology considers multiple aspects of the project, such as design, construction, operation and maintenance, and can integrate information from all aspects of the project. In schedule management, BIM technology can integrate information such as schedule plans, material lists, construction drawings, etc. of various disciplines to form an overall schedule. This comprehensive information integration helps to better coordinate the work and progress between various disciplines, avoid conflicts and delays, and improve construction efficiency. BIM technology can visualize all aspects of the project, including schedule plans, material lists, construction drawings, etc. of various disciplines. This information can be visualized and presented in three or even four dimensions through BIM technology, so that managers can intuitively understand the progress of the project and the specific work content and time requirements of each schedule. This visual display helps to avoid interference from human factors in schedule management and improve the accuracy and reliability of project management.

[0086] In one embodiment of the present invention, the modeling device comprises:

[0087] Initial file: Create a project file in BIM and set relevant information of the project;

[0088] Construction system: According to the parameters of the target building, select the required materials and structures in 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, create a new project file 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 unique identifier for the project.

[0090] Project Location: Describe the specific geographic location of the project.

[0091] Unit settings: Set the format and standard of units such as length, area, volume, angle, etc. 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 drawing name, number, scale, etc. to facilitate the subsequent generation of construction drawings.

[0094] Set the storage path and backup strategy of the project to ensure the security and recoverability of the project data. According to the project requirements, the various parameters of the target building are input into the BIM software, and the appropriate components and materials are selected in the intelligent component library according to the parameters and design requirements of the target building. The selected components and materials are assembled and constructed in the BIM software according to the design requirements to form a three-dimensional model of the target building. In this process, the various parameters and properties of the model can be viewed and adjusted in real time to ensure that it meets the design requirements. After the construction is completed, the model is verified and checked to ensure that the parameters and properties are set correctly. At the same time, the simulation and analysis functions of the BIM software can be used to perform structural analysis, energy consumption analysis, collision detection, etc. on the model to find potential problems and optimize them. BIM technology can integrate information from various stages of the project from design, construction to operation and maintenance, including data from various disciplines such as the structure, electrical, mechanical, and piping of the building. This comprehensive information integration helps project managers better understand the overall situation of the project and provide comprehensive data support for progress management. The BIM model supports multi-disciplinary collaboration, and designers from different disciplines can work on the same model, avoiding professional conflicts and duplication of work that may occur in traditional design. This collaborative working method helps shorten the design cycle and improve design quality. BIM technology can generate 4D models, that is, adding the time dimension to the 3D model to simulate the project schedule. This simulation helps project managers better plan the construction period and resources, and timely discover and solve potential schedule problems. At the same time, BIM technology can also optimize the schedule to ensure that the project can be completed on time.

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

[0096] Self-check system: automatically checks the BIM model, corrects errors in the model, and then performs lightweight processing on the model so that the BIM model can run smoothly on the AR device;

[0097] Projection system: Import the BIM model into the AR device, capture the image of the real world through the camera of the AR device, 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.

[0098] The working principle and effect of the above technical solution are: using the automatic detection function in the BIM software to perform a comprehensive error and conflict check on the BIM model. This usually includes geometric consistency check, attribute consistency check, spatial consistency check and specification compliance check. According to the detection results, the BIM software will automatically or prompt the user to manually correct the errors and conflicts in the model. In order to make the BIM model run smoothly on the AR device, it needs to be lightweight. Lightweight processing aims to reduce the amount of data in the model while maintaining the necessary information and accuracy of the model, including deleting duplicate or unnecessary data in the model and reducing the storage space and computing resources. By optimizing the structure and details of the geometric data, the complexity of the model is reduced and the operation efficiency is improved. Use an efficient data compression algorithm to compress the data volume of the model to a minimum. Use a hierarchical storage structure to disperse the model data into different levels to improve the operation efficiency. Import the lightweight BIM model into the AR device. The AR device captures images of the real world through its built-in camera. Using image recognition technology, the captured images are processed and analyzed to find the real scene corresponding to the BIM model. Accurately align the BIM model with the real scene to ensure that the virtual model can be accurately superimposed on the real scene. The BIM model is displayed in an intuitive way through the display screen or projection device of the AR device. Users can observe the detailed information of the target building, such as structure, material, size, etc. through the AR device. Users can interact with the BIM model through the interactive function of the AR device. Based on the observed detailed information, users can further adjust and optimize the data in the BIM model. Automatic detection can quickly identify and mark errors and conflicts in the model, such as geometric inconsistencies, attribute errors, or specification violations, to ensure the accuracy and completeness of the model. Compared with traditional manual inspection, automatic detection can greatly reduce manual workload, improve work efficiency, and reduce the risk of human error. Lightweight processing can significantly reduce the amount of data in the model, improve display efficiency on resource-constrained platforms such as AR devices, and ensure a smooth operation experience. Superimposing the BIM model on the real scene through the AR device provides users with a more intuitive and immersive experience, which helps to better understand the design plan and on-site conditions. The BIM model display based on AR devices can provide more comprehensive information support, helping decision makers to more accurately evaluate design plans, construction plans or operation and maintenance strategies.

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

[0100] Plan refinement system: The overall construction plan is broken down into multiple sub-plans. Based on the overall construction plan and the estimated completion time, the percentage of construction progress that should be completed daily for each sub-plan is calculated;

[0101] Deviation calculation system: Use data acquisition equipment to collect on-site construction information 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.

[0102] The working principle and effect of the above technical solution are as follows: First, the calculation system will decompose the complex construction process into multiple more specific and easier to manage sub-plans based on the overall construction plan and the expected completion time. For each sub-plan, the calculation system will further calculate the percentage of construction progress that should be completed every day based on its overall workload, required time and resources. The daily progress targets of each sub-plan are summarized to form a detailed schedule. At the construction site, various data acquisition devices are used to collect construction information in real time. At the same time, 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. Compare the actual collected construction information with the construction progress simulated by AR technology. By comparison, the deviation between the actual construction progress and the preset progress can be clearly seen. These deviations may be manifested in different situations such as delayed progress, early progress or consistency with the preset progress. Once it is found that the actual construction progress deviates from the preset progress, 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 goals of each stage can be more specifically defined, making the construction plan more accurate and easier to execute. Setting a percentage of construction progress to be completed daily for each sub-plan helps the construction team clarify daily work priorities and progress requirements and improve construction efficiency. Using data acquisition equipment to collect on-site construction information in real time can accurately reflect the actual situation of the construction site and provide reliable data support for monitoring the construction progress. Comparing the actual construction progress with the construction progress simulated by AR technology can instantly discover deviations and analyze them, which helps the project management team take timely adjustment measures to ensure that the construction progress is consistent with the plan. Simulating the construction progress through AR technology makes the construction management process more transparent and helps all parties involved understand the construction progress and existing problems.

[0103] In one embodiment of the present invention, the emergency handling system comprises:

[0104] First response plan: When the gap is lower than the 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, the second response plan is 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, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors that cause the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors;

[0108] If it is a human factor, the management system will intervene in real time;

[0109] If it is a non-human factor, the management system will initiate an emergency plan.

[0110] In the progress management system based on the BIM model, the emergency handling system dynamically adjusts the threshold to better adapt to the actual construction situation. And the calculation formula of the dynamically adjusted threshold is as follows:

[0111] T=T0+K×α

[0112] Among them, 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 by 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, that is, 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] And, the absolute deviation E i It can be obtained by the following formula:

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

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

[0119] When 0.5<T≤1, it means that the emergency management system has a high tolerance for construction progress deviation and continues the construction plan;

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

[0121] The working principle and effect of the above technical solution are as follows: when the gap between the actual construction progress and the preset progress is lower than the set threshold, the management system first calculates the growth rate of the gap. Growth rate ≤ 0: indicates that the construction progress is proceeding as planned or ahead of schedule. At this time, no special measures are needed and the current construction plan continues to be implemented. Growth rate > 0: indicates that the construction progress begins to lag behind the plan and the gap has a tendency to expand. At this time, the second response plan needs to be implemented. When the gap 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 (that is, it is predicted that the gap will expand and exceed the threshold in the future), the management system deeply analyzes the specific factors that cause the deviation of the construction progress. Human factors: such as insufficient construction personnel, substandard skill levels, poor management, etc. For such factors, the management system will intervene in real time, such as adjusting staffing, strengthening skill training, optimizing management processes, etc. Such as weather changes, delayed material supply, equipment failure, etc. For such factors, the management system will initiate emergency plans, including adjusting construction plans, emergency procurement of materials, repairing or replacing equipment, etc. The system can monitor the construction progress in real time and compare it with the preset progress. Once it is found that the deviation exceeds the threshold or the growth rate is unfavorable, the response plan is triggered immediately. This real-time feature ensures that problems can be discovered and solved in a timely manner. Dynamic adjustment of thresholds based on actual construction conditions makes the system more flexible and adaptable. This dynamism helps to more accurately reflect the actual situation of the construction progress and improve the accuracy of emergency response. The system can deeply analyze the specific factors that cause deviations in the construction progress and divide them into human factors and non-human factors. This accuracy helps project managers to prescribe the right medicine and take targeted measures to solve the problem. For human factors, the system can intervene in real time; for non-human factors, the system can initiate corresponding emergency plans. This targeted approach can solve problems more effectively and reduce unnecessary waste and losses. Through real-time monitoring and accurate analysis, the system can make decisions quickly and implement corresponding response plans. This efficiency helps to quickly solve deviations in the construction progress and avoid further expansion of the problem.

[0122] 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 progress management method based on BIM model, characterized in that: The method comprises: S1: Based on the parameters of the target building under construction, a BIM model of the target building is established; S2: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure; S3: The estimation system estimates the daily construction progress based on the estimated 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 photo information collected by the acquisition equipment with the simulated construction progress to obtain the construction progress deviation; S4: Compare the construction progress deviation with the construction progress deviation preset by the estimation system, determine whether the difference between the construction progress deviation and the preset construction progress deviation is higher than a threshold, and take corresponding measures.

2. A progress management method based on BIM model according to claim 1, characterized in that: The S1 includes: S11: Create a project file in BIM and set relevant information of the project; S12: According to the parameters of the target building, select the required materials and structures in the intelligent component library and complete the construction of the target building in BIM.

3. The progress management method based on the BIM model according to claim 1 is characterized in that: The S2 includes: S21: Automatically detect the BIM model, correct errors in the model, and then perform lightweight processing on the model so that the BIM model runs smoothly on the AR device; S22: Import the BIM model into the AR device, capture the image of the real world through the camera of the AR device, use image recognition technology to find the real scene corresponding to the BIM model, intuitively display the details of the target building, and further adjust the data of the target building according to the details.

4. The progress management method based on the BIM model according to claim 1 is characterized in that: The S3 includes: S31: Decompose the overall construction plan into multiple sub-plans, and calculate the percentage of construction progress that should be completed daily for each sub-plan based on the overall construction plan and the estimated completion time; S32: Collect on-site construction information using data acquisition equipment, and compare 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 the BIM model according to claim 1 is characterized in that: The S4 includes: S41: When the gap is lower than a threshold, the management system calculates a growth rate of the gap. If the growth rate is ≤0, the construction plan will continue; If the growth rate is greater than 0, proceed to step S42; S42: When the gap is higher than a threshold or the growth rate of the gap is greater than 0, that is, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors causing the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors; If it is a human factor, the management system will intervene in real time; If it is a non-human factor, the management system will initiate an emergency plan.

6. A progress management system based on BIM model, characterized in that: The system comprises: Modeling device: based on the parameters of the target building under construction, establish a BIM model of the target building; Augmented reality system: Through AR devices, the virtual model in BIM is superimposed on the real construction scene to intuitively display the building structure; Estimation system: The estimation system estimates the daily construction progress based on the estimated 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 photo information collected by the acquisition equipment with the simulated construction progress to obtain the construction progress deviation; Emergency handling system: compares the construction progress deviation with the construction progress deviation preset by the estimation 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.

7. A progress management system based on a BIM model according to claim 6, characterized in that: The modeling device comprises: Initial file: Create a project file in BIM and set relevant information of the project; Construction system: According to the parameters of the target building, select the required materials and structures in the intelligent component library and complete the construction of the target building in BIM.

8. According to claim 6, a progress management system based on a BIM model is characterized in that ,The augmented reality system includes: Self-check system: automatically checks the BIM model, corrects errors in the model, and then performs lightweight processing on the model so that the BIM model can run smoothly on the AR device; Projection system: Import the BIM model into the AR device, capture the image of the real world through the camera of the AR device, 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.

9. According to claim 6, a progress management system based on a BIM model is characterized in that , the calculation system comprises: Plan refinement system: The overall construction plan is broken down into multiple sub-plans. Based on the overall construction plan and the estimated completion time, the percentage of construction progress that should be completed daily for each sub-plan is calculated; Deviation calculation system: Use data acquisition equipment to collect on-site construction information 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.

10. A progress management system based on a BIM model according to claim 6, characterized in that , the emergency handling system comprises: First response plan: When the gap is lower than the threshold, the management system calculates the growth rate of the gap. If the growth rate is ≤0, the construction plan will continue; If the growth rate is greater than 0, the second response plan is executed; Second response plan: when the gap is higher than the threshold or the growth rate of the gap is greater than 0, that is, the gap gradually increases every day and will eventually exceed the threshold, the management system analyzes the factors that cause the large gap between the construction progress deviation and the preset construction progress deviation, and divides the factors into human factors and non-human factors; If it is a human factor, the management system will intervene in real time; If it is a non-human factor, the management system will initiate an emergency plan.

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