Project management method and system based on BIM

Abstract

The invention relates to the technical field of management, in particular to a BIM-based project management method and system, and the BIM-based project management system comprises a plan simulation module, a dynamic updating module, a progress comparison module, a reason analysis module, an automatic scheduling module and a resource management module. The plan simulation module generates a building construction 4D simulation video; the dynamic updating module collects progress data of a construction site in real time and generates an actual construction progress; the progress comparison module compares the actual construction progress with the construction reference progress plan, and finds out the specific situation of the backward construction progress if the backward progress is found; the reason analysis module analyzes the root reason of the backward construction progress according to the specific situation of the backward construction progress; the automatic scheduling module automatically adjusts the sequence and time arrangement of construction tasks according to the root cause of the backward construction progress and generates resource allocation information, and the resource management module allocates resources again according to the resource allocation information.

Description

Technical Field

[0001] The present invention relates to the field of management technology, and in particular to a BIM-based project management method and system. Background Art

[0002] As the complexity of construction projects continues to increase, traditional project management methods have gradually shown their shortcomings in terms of progress control, resource allocation and cost management. Building Information Modeling (BIM), as an integrated and digital tool, has been widely used in the process of building design and construction. BIM, the full name of which is Building Information Modeling, is a digital tool for planning, designing, building and managing buildings and infrastructure. It is not only a 3D modeling software, but also a platform that integrates multiple information, which can include information from the entire life cycle from building design to construction to operation and maintenance.

[0003] At present, in the process of building construction project management, 4D simulation based on BIM mainly relies on pre-set progress plans, lacks real-time data collection methods, and cannot accurately reflect the actual progress of the construction site. When the progress is behind schedule, it is also impossible to adjust the sequence and schedule of construction tasks in time. Summary of the invention

[0004] The purpose of the present invention is to provide a BIM-based project management method and system, which can accurately reflect the actual progress of the construction site and timely adjust the sequence and time arrangement of construction tasks when the progress falls behind.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present invention provides a BIM-based project management system, comprising a plan simulation module, a dynamic update module, a progress comparison module, a cause analysis module, an automatic scheduling module and a resource management module; the dynamic update module is connected to the plan simulation module; the progress comparison module is respectively connected to the plan simulation module and the dynamic update module; the cause analysis module is connected to the progress comparison module; the automatic scheduling module is connected to the cause analysis module; the resource management module is respectively connected to the plan simulation module and the automatic scheduling module;

[0006] The planning simulation module is used to generate a construction benchmark schedule based on existing resources, and to construct a 3D model of the building construction, and to generate a 4D simulation video of the building construction in combination with the construction benchmark schedule;

[0007] The dynamic update module is used to collect progress data of the construction site in real time, generate actual construction progress, and correct the 4D simulation video of the building construction;

[0008] The progress comparison module is used to compare the actual construction progress with the construction baseline progress plan, and if it is found that the progress is behind schedule, find out the specific situation of the construction progress being behind schedule;

[0009] The cause analysis module is used to analyze the root cause of the construction progress delay according to the specific situation of the construction progress delay;

[0010] The automated scheduling module is used to automatically adjust the sequence and schedule of construction tasks and generate resource allocation information based on the root cause of the construction progress delay.

[0011] The resource management module is used to allocate resources according to the resource allocation information.

[0012] Wherein, the planning simulation module comprises a planning unit, a 3D modeling unit and a 4D simulation unit; the 4D simulation unit is connected to the planning unit and the 3D modeling unit respectively;

[0013] The plan simulation unit is used by the staff to formulate a detailed construction baseline schedule;

[0014] The 3D modeling unit is used to create a detailed 3D model of the building construction;

[0015] The 4D simulation unit is used to combine the construction baseline schedule with the building construction 3D model to create a building construction 4D simulation video, and is also used to correct the building construction 4D simulation video according to the actual construction progress.

[0016] Wherein, the dynamic update module includes a real-time progress data collection unit, a manual upload unit and a data aggregation unit; the data aggregation unit is connected to the real-time progress data collection unit and the manual upload unit respectively;

[0017] The real-time progress data acquisition unit is used to regularly acquire three-dimensional data of the construction site using drone and laser scanning technology;

[0018] The manual uploading unit is used to upload the work progress of the construction personnel every day using a mobile terminal;

[0019] The data summary unit is used to summarize and evaluate the actual construction progress based on the work progress uploaded by the construction personnel and the three-dimensional data of the construction site obtained, and to correct the 4D simulation video of the building construction.

[0020] Wherein, the progress comparison module includes a deviation analysis unit and a visualization display unit; the visualization display unit is connected to the deviation analysis unit;

[0021] The deviation analysis unit is used to calculate the deviation between the actual construction progress and the construction baseline progress plan, and determine which tasks are behind schedule;

[0022] The visual display unit is used to visually display the delayed tasks in the form of charts.

[0023] Wherein, the cause analysis module includes an input unit and a cause analysis unit; the cause analysis unit is connected to the input unit;

[0024] The input unit is used for the staff to input various relevant information of the delayed task;

[0025] The cause analysis unit is used to analyze the root cause of the delayed task.

[0026] Wherein, the automatic scheduling module includes an intelligent scheduling unit and a resource allocation unit; the resource allocation unit is connected to the intelligent scheduling unit;

[0027] The intelligent scheduling unit is used to automatically adjust the sequence and time schedule of construction tasks according to the current resource status and the root cause of the delayed tasks;

[0028] The resource allocation unit is used to generate resource allocation information according to the sequence and time arrangement of the reallocated construction tasks.

[0029] Wherein, the resource management module includes a resource aggregation unit and a resource management unit; the resource management unit is connected to the resource aggregation unit;

[0030] The resource summary unit is used by staff to input information on various types of human resources, materials and equipment resources;

[0031] The resource management unit is used to allocate human resources, material resources and equipment resources according to the resource allocation information.

[0032] In a second aspect, the present invention further provides a BIM-based project management method, comprising:

[0033] The planning simulation module generates a construction baseline schedule based on existing resources, builds a 3D model of the building construction, and combines it with the construction baseline schedule to generate a 4D simulation video of the building construction;

[0034] The dynamic update module collects the progress data of the construction site in real time, generates the actual construction progress, and corrects the 4D simulation video of the building construction;

[0035] The progress comparison module compares the actual construction progress with the construction baseline progress plan. If the progress is found to be behind schedule, the specific circumstances of the delay will be found.

[0036] The cause analysis module analyzes the root cause of the construction progress delay according to the specific situation of the construction progress delay;

[0037] The automated scheduling module automatically adjusts the sequence and schedule of construction tasks according to the root cause of the construction delay and generates resource allocation information. The resource management module reallocates resources based on the resource allocation information.

[0038] The project management method and system based on BIM of the present invention, the planning simulation module uses Autodesk Revit to create a detailed 3D model of building construction, and uses Primavera P6 formulates and manages a detailed construction benchmark schedule, combines it with the 3D model of the building construction, and generates a 4D simulation video of the building construction, wherein the construction benchmark schedule needs to be determined based on the existing resource information, mainly including the sequence and time arrangement of the construction tasks; the dynamic update module is mainly used to timely understand the situation of the construction site, generate the actual construction progress, and correct the 4D simulation video according to the actual construction progress, so that the 4D simulation video accurately reflects the actual construction progress; the progress comparison module is used to compare the actual construction progress with the construction benchmark schedule. If the progress is found to be behind schedule, find out the specific situation of the construction progress and which construction tasks are behind schedule; the cause analysis module analyzes the root cause of the construction progress behind schedule according to the specific situation of the construction progress behind schedule; the automatic scheduling module readjusts the sequence and time arrangement of the construction tasks according to the existing resource situation and the specific situation of the behind-schedule construction tasks, and generates resource allocation information; the resource management module allocates resources according to the resource allocation information, and also displays the resources that need to be supplemented to the staff for reference; through the above method, the actual progress of the construction site can be accurately reflected, and the sequence and time arrangement of the construction tasks can be adjusted in time when the progress is behind schedule. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0040] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention.

[0041] Figure 2 It is a schematic diagram of the structure of the planning simulation module of the first embodiment of the present invention.

[0042] Figure 3 It is a schematic diagram of the structure of the dynamic update module of the first embodiment of the present invention.

[0043] Figure 4 It is a structural diagram of a progress comparison module according to the first embodiment of the present invention.

[0044] Figure 5It is a schematic diagram of the structure of the cause analysis module of the first embodiment of the present invention.

[0045] Figure 6 It is a structural diagram of the automatic scheduling module of the first embodiment of the present invention.

[0046] Figure 7 It is a schematic diagram of the structure of the resource management module of the first embodiment of the present invention.

[0047] Figure 8 It is a flowchart of the second embodiment of the present invention.

[0048] 1-Planning simulation module, 2-Dynamic update module, 3-Progress comparison module, 4-Cause analysis module, 5-Automated scheduling module, 6-Resource management module, 11-Planning unit, 12-3D modeling unit, 13-4D simulation unit, 21-Real-time progress data acquisition unit, 22-Manual upload unit, 23-Data summary unit, 31-Deviation analysis unit, 32-Visual display unit, 41-Input unit, 42-Cause analysis unit, 51-Intelligent scheduling unit, 52-Resource allocation unit, 61-Resource summary unit, 62-Resource management unit. DETAILED DESCRIPTION

[0049] The first embodiment of the present application is:

[0050] See also Figure 1-Figure 7 ,in, Figure 1 It is a schematic structural diagram of the first embodiment of the present invention. Figure 2 It is a schematic diagram of the structure of the planning simulation module of the first embodiment of the present invention. Figure 3 It is a schematic diagram of the structure of the dynamic update module of the first embodiment of the present invention. Figure 4 It is a structural diagram of a progress comparison module according to the first embodiment of the present invention. Figure 5 It is a schematic diagram of the structure of the cause analysis module of the first embodiment of the present invention. Figure 6 It is a structural diagram of the automatic scheduling module of the first embodiment of the present invention. Figure 7 It is a schematic diagram of the structure of the resource management module of the first embodiment of the present invention.

[0051] The present invention provides a BIM-based project management system: comprising a plan simulation module 1, a dynamic update module 2, a progress comparison module 3, a cause analysis module 4, an automatic scheduling module 5 and a resource management module 6; the plan simulation module 1 comprises a plan unit 11, a 3D modeling unit 12 and a 4D simulation unit 13; the dynamic update module 2 comprises a real-time progress data acquisition unit 21, a manual upload unit 22 and a data summary unit 23; the progress comparison module 3 comprises a deviation analysis unit 31 and a visual display unit 32; the cause analysis module 4 comprises an input unit 41 and a cause analysis unit 42; the automatic scheduling module 5 comprises an intelligent scheduling unit 51 and a resource allocation unit 52; the resource management module 6 comprises a resource summary unit 61 and a resource management unit 62; the above scheme can accurately reflect the actual progress of the construction site, and timely adjust the sequence and time arrangement of construction tasks when the progress is behind schedule.

[0052] Further, it includes a plan simulation module 1, a dynamic update module 2, a progress comparison module 3, a cause analysis module 4, an automatic scheduling module 5 and a resource management module 6; the dynamic update module 2 is connected to the plan simulation module 1; the progress comparison module 3 is respectively connected to the plan simulation module 1 and the dynamic update module 2; the cause analysis module 4 is connected to the progress comparison module 3; the automatic scheduling module 5 is connected to the cause analysis module 4; the resource management module 6 is respectively connected to the plan simulation module 1 and the automatic scheduling module 5;

[0053] The planning simulation module 1 is used to generate a construction benchmark schedule based on existing resources, and to construct a 3D model of the building construction, and to generate a 4D simulation video of the building construction in combination with the construction benchmark schedule;

[0054] The dynamic update module 2 is used to collect the progress data of the construction site in real time, generate the actual construction progress, and correct the 4D simulation video of the building construction;

[0055] The progress comparison module 3 is used to compare the actual construction progress with the construction benchmark progress plan, and if it is found that the progress is behind schedule, find out the specific situation of the construction progress being behind schedule;

[0056] The cause analysis module 4 is used to analyze the root cause of the construction progress delay according to the specific situation of the construction progress delay;

[0057] The automatic scheduling module 5 is used to automatically adjust the sequence and time arrangement of construction tasks according to the root cause of the construction progress delay and generate resource allocation information.

[0058] The resource management module 6 is used to allocate resources according to the resource allocation information.

[0059] In this embodiment, the planning simulation module 1 uses Autodesk Revit to create a detailed 3D model of the building construction, and uses Primavera P6 formulates and manages a detailed construction benchmark schedule, combines it with the 3D model of the building construction, and generates a 4D simulation video of the building construction, wherein the construction benchmark schedule needs to be determined based on the existing resource information, mainly including the sequence and time arrangement of the construction tasks; the dynamic update module 2 is mainly used to timely understand the situation of the construction site, generate the actual construction progress, and correct the 4D simulation video according to the actual construction progress, so that the 4D simulation video accurately reflects the actual construction progress; the progress comparison module 3 is used to compare the actual construction progress with the construction benchmark schedule. If it is found that the progress is lagging behind, find out the specific situation of the construction progress lagging behind, and specifically which construction tasks are lagging behind; the cause analysis module 4 analyzes the root cause of the construction progress lagging behind according to the specific situation of the construction progress lagging behind; the automatic scheduling module 5 readjusts the sequence and time arrangement of the construction tasks according to the existing resource situation and the specific situation of the lagging construction tasks, and generates resource allocation information; the resource management module 6 allocates resources according to the resource allocation information, and also displays the resources that need to be supplemented to the staff for reference; through the above method, the actual progress of the construction site can be accurately reflected, and the sequence and time arrangement of the construction tasks can be adjusted in time when the progress is lagging behind.

[0060] Further, the planning simulation module 1 includes a planning unit 11, a 3D modeling unit 12 and a 4D simulation unit 13; the 4D simulation unit 13 is connected to the planning unit 11 and the 3D modeling unit 12 respectively;

[0061] The plan simulation unit is used by the staff to formulate a detailed construction baseline schedule;

[0062] The 3D modeling unit 12 is used to create a detailed 3D model of the building construction;

[0063] The 4D simulation unit 13 is used to combine the construction baseline schedule with the building construction 3D model to create a building construction 4D simulation video, and is also used to correct the building construction 4D simulation video according to the actual construction progress.

[0064] In this embodiment, the planning simulation unit uses Primavera P6 to formulate and manage a detailed construction baseline schedule, the 3D modeling unit 12 uses Autodesk Revit to create a detailed building construction 3D model, and the 4D simulation unit 13 uses Primavera P6 to combine the construction baseline schedule with the building construction 3D model to generate a building construction 4D simulation video. The building construction 4D simulation video can also be corrected according to the actual construction progress feedback from the dynamic update module 2, so that the building construction 4D simulation video can feed back the real construction progress to the staff.

[0065] Further, the dynamic update module 2 includes a real-time progress data collection unit 21, a manual upload unit 22 and a data aggregation unit 23; the data aggregation unit 23 is connected to the real-time progress data collection unit 21 and the manual upload unit 22 respectively;

[0066] The real-time progress data acquisition unit 21 is used to regularly acquire three-dimensional data of the construction site using drone and laser scanning technology;

[0067] The manual uploading unit 22 is used to upload the work progress of the construction personnel every day using a mobile terminal;

[0068] The data summary unit 23 is used to summarize and evaluate the actual construction progress based on the work progress uploaded by the construction personnel and the three-dimensional data of the construction site obtained, and to correct the 4D simulation video of the building construction.

[0069] In this embodiment, the real-time progress data acquisition unit 21 uses drones and laser scanning technology to regularly obtain three-dimensional data of the construction site; the manual uploading unit 22 uses a mobile terminal, such as an app on a mobile phone, to allow construction workers to report their work progress every day; the data aggregation unit 23 aggregates the work progress uploaded by the construction workers and the acquired three-dimensional data of the construction site, summarizes the actual construction progress, and corrects the 4D simulation video of the building construction.

[0070] Further, the progress comparison module 3 includes a deviation analysis unit 31 and a visualization display unit 32; the visualization display unit 32 is connected to the deviation analysis unit 31;

[0071] The deviation analysis unit 31 is used to calculate the deviation between the actual construction progress and the construction baseline progress plan, and determine which tasks are behind schedule;

[0072] The visual display unit 32 is used to visually display the delayed tasks in the form of charts.

[0073] In this embodiment, the deviation analysis unit 31 can use a difference analysis algorithm to compare the planned progress with the actual progress, including time series analysis to identify trends and outliers, and determine which construction tasks are delayed. The visualization display unit 32 is used to display the delayed tasks intuitively to the staff through charts to understand the situation.

[0074] Further, the cause analysis module 4 includes an input unit 41 and a cause analysis unit 42; the cause analysis unit 42 is connected to the input unit 41;

[0075] The input unit 41 is used for the staff to input various related information of the delayed task;

[0076] The cause analysis unit 42 is used to analyze the root cause of the delayed task.

[0077] In this embodiment, the input unit 41 is used for the staff to input various relevant information of the delayed task, including but not limited to resource conditions, design changes, weather factors, and quality problem rework conditions. The cause analysis unit 42 is used to analyze the root cause of the delayed construction task based on the various relevant information of the delayed task.

[0078] Furthermore, the automatic scheduling module 5 includes an intelligent scheduling unit 51 and a resource allocation unit 52; the resource allocation unit 52 is connected to the intelligent scheduling unit 51;

[0079] The intelligent scheduling unit 51 is used to automatically adjust the sequence and time arrangement of construction tasks according to the current resource status and the root cause of the delayed tasks;

[0080] The resource allocation unit 52 is used to generate resource allocation information according to the order and time arrangement of the reallocated construction tasks.

[0081] In this embodiment, the intelligent scheduling unit 51 reallocates the order and time schedule of construction tasks according to the current resource status and the root cause of delayed tasks; the resource allocation unit 52 intelligently generates resource allocation information according to the reallocated order and time schedule of construction tasks.

[0082] Further, the resource management module 6 includes a resource aggregation unit 61 and a resource management unit 62; the resource management unit 62 is connected to the resource aggregation unit 61;

[0083] The resource summary unit 61 is used for staff to input information of various types of human resources, materials and equipment resources;

[0084] The resource management unit 62 is used to allocate human resources, material resources and equipment resources according to the resource allocation information.

[0085] In this embodiment, the resource aggregation unit 61 is used to aggregate information on all available human, material and equipment resources, and real-time newly added resources and expected newly added resources are also aggregated in a timely manner; the resource management unit 62 is used to allocate human, material and equipment resources according to resource allocation information.

[0086] The BIM-based project management system described in this embodiment, in this implementation, the planning simulation module 1 uses Autodesk Revit to create a detailed building construction 3D model, and uses Primavera P6 formulates and manages a detailed construction benchmark schedule, combines it with the 3D model of the building construction, and generates a 4D simulation video of the building construction, wherein the construction benchmark schedule needs to be determined based on the existing resource information, mainly including the sequence and time arrangement of the construction tasks; the dynamic update module 2 is mainly used to timely understand the situation of the construction site, generate the actual construction progress, and correct the 4D simulation video according to the actual construction progress, so that the 4D simulation video accurately reflects the actual construction progress; the progress comparison module 3 is used to compare the actual construction progress with the construction benchmark schedule. If it is found that the progress is lagging behind, find out the specific situation of the construction progress lagging behind, and specifically which construction tasks are lagging behind; the cause analysis module 4 analyzes the root cause of the construction progress lagging behind according to the specific situation of the construction progress lagging behind; the automatic scheduling module 5 readjusts the sequence and time arrangement of the construction tasks according to the existing resource situation and the specific situation of the lagging construction tasks, and generates resource allocation information; the resource management module 6 allocates resources according to the resource allocation information, and also displays the resources that need to be supplemented to the staff for reference; through the above method, the actual progress of the construction site can be accurately reflected, and the sequence and time arrangement of the construction tasks can be adjusted in time when the progress is lagging behind.

[0087] The second embodiment of the present application is:

[0088] See also Figure 8 ,in, Figure 8 It is a flowchart of the second embodiment of the present invention.

[0089] The present invention provides a BIM-based project management method, comprising:

[0090] S1 planning simulation module 1 generates a construction baseline schedule based on existing resources, builds a 3D model of the building construction, and combines it with the construction baseline schedule to generate a 4D simulation video of the building construction;

[0091] S2 dynamic update module 2 collects progress data of the construction site in real time, generates the actual construction progress, and corrects the 4D simulation video of the building construction;

[0092] S3 Progress comparison module 3 compares the actual construction progress with the construction baseline progress plan. If the progress is found to be behind schedule, find out the specific circumstances of the construction progress being behind schedule;

[0093] S4 Cause Analysis Module 4 analyzes the root cause of the construction progress delay according to the specific situation of the construction progress delay;

[0094] S5 The automated scheduling module 5 automatically adjusts the sequence and time schedule of construction tasks according to the root cause of the delayed construction progress, and generates resource allocation information. The resource management module 6 reallocates resources according to the resource allocation information.

[0095] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A BIM-based project management system, characterized in that: It includes a plan simulation module, a dynamic update module, a progress comparison module, a cause analysis module, an automatic scheduling module and a resource management module; the dynamic update module is connected to the plan simulation module; the progress comparison module is connected to the plan simulation module and the dynamic update module respectively; the cause analysis module is connected to the progress comparison module; the automatic scheduling module is connected to the cause analysis module; the resource management module is connected to the plan simulation module and the automatic scheduling module respectively; The planning simulation module is used to generate a construction benchmark schedule based on existing resources, and to construct a 3D model of the building construction, and to generate a 4D simulation video of the building construction in combination with the construction benchmark schedule; The dynamic update module is used to collect progress data of the construction site in real time, generate actual construction progress, and correct the 4D simulation video of the building construction; The progress comparison module is used to compare the actual construction progress with the construction baseline progress plan, and if it is found that the progress is behind schedule, find out the specific situation of the construction progress being behind schedule; The cause analysis module is used to analyze the root cause of the construction progress delay according to the specific situation of the construction progress delay; The automated scheduling module is used to automatically adjust the sequence and schedule of construction tasks and generate resource allocation information based on the root cause of the construction progress delay. The resource management module is used to allocate resources according to the resource allocation information.

2. A BIM-based project management system as claimed in claim 1, characterized in that: The planning simulation module includes a planning unit, a 3D modeling unit and a 4D simulation unit; the 4D simulation unit is connected to the planning unit and the 3D modeling unit respectively; The plan simulation unit is used by the staff to formulate a detailed construction baseline schedule; The 3D modeling unit is used to create a detailed 3D model of the building construction; The 4D simulation unit is used to combine the construction baseline schedule with the building construction 3D model to create a building construction 4D simulation video, and is also used to correct the building construction 4D simulation video according to the actual construction progress.

3. A BIM-based project management system as claimed in claim 2, characterized in that: The dynamic update module includes a real-time progress data collection unit, a manual upload unit and a data aggregation unit; the data aggregation unit is connected to the real-time progress data collection unit and the manual upload unit respectively; The real-time progress data acquisition unit is used to regularly acquire three-dimensional data of the construction site using drone and laser scanning technology; The manual uploading unit is used to upload the work progress of the construction personnel every day using a mobile terminal; The data summary unit is used to summarize and evaluate the actual construction progress based on the work progress uploaded by the construction personnel and the three-dimensional data of the construction site obtained, and to correct the 4D simulation video of the building construction.

4. A BIM-based project management system as claimed in claim 3, characterized in that: The progress comparison module includes a deviation analysis unit and a visualization display unit; the visualization display unit is connected to the deviation analysis unit; The deviation analysis unit is used to calculate the deviation between the actual construction progress and the construction baseline progress plan, and determine which tasks are behind schedule; The visual display unit is used to visually display the delayed tasks in the form of charts.

5. A BIM-based project management system as claimed in claim 4, characterized in that: The cause analysis module includes an input unit and a cause analysis unit; the cause analysis unit is connected to the input unit; The input unit is used for the staff to input various relevant information of the delayed task; The cause analysis unit is used to analyze the root cause of the delayed task.

6. A BIM-based project management system as claimed in claim 5, characterized in that: The automatic scheduling module includes an intelligent scheduling unit and a resource allocation unit; the resource allocation unit is connected to the intelligent scheduling unit; The intelligent scheduling unit is used to automatically adjust the sequence and time schedule of construction tasks according to the current resource status and the root cause of the delayed tasks; The resource allocation unit is used to generate resource allocation information according to the sequence and time arrangement of the reallocated construction tasks.

7. A BIM-based project management system as claimed in claim 6, characterized in that: The resource management module includes a resource aggregation unit and a resource management unit; the resource management unit is connected to the resource aggregation unit; The resource summary unit is used by staff to input information on various types of human resources, materials and equipment resources; The resource management unit is used to allocate human resources, material resources and equipment resources according to the resource allocation information.

8. A BIM-based project management method, applied to a BIM-based project management system as claimed in any one of claims 1 to 7; characterized in that: include: The planning simulation module generates a construction baseline schedule based on existing resources, builds a 3D model of the building construction, and combines it with the construction baseline schedule to generate a 4D simulation video of the building construction; The dynamic update module collects the progress data of the construction site in real time, generates the actual construction progress, and corrects the 4D simulation video of the building construction; The progress comparison module compares the actual construction progress with the construction baseline progress plan. If the progress is found to be behind schedule, the specific circumstances of the delay will be found. The cause analysis module analyzes the root cause of the construction progress delay according to the specific situation of the construction progress delay; The automated scheduling module automatically adjusts the sequence and schedule of construction tasks according to the root cause of the construction delay and generates resource allocation information. The resource management module reallocates resources based on the resource allocation information.

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