Using BIM technology for project schedule management in prefabricated building construction can significantly reduce construction time and prevent unnecessary cost overruns. The application process typically involves the following steps:
1. Establishing 4DBIM involves three key steps:
① Create a 3D solid model. Using BIM software such as Autodesk Revit, develop a detailed 3D solid model of the building. The model must accurately represent all components involved in the assembly process, ensuring a faithful virtual reflection of the actual construction site. Additionally, engineering attributes like position, dimensions, and materials should be incorporated according to assembly requirements.
② Develop an assembly process model. This step focuses on defining the project’s hierarchical assembly activities, their sequence, and structure. Each activity is assigned a duration based on empirical data, and logical task dependencies are established between them to reflect the workflow.
③ Integrate the solid and process models. Using linking tools, couple the assembly process model with the 3D solid model by tagging components with activity identifiers. This allows filtering and classification of model information by activity, creating a comprehensive 4DBIM model.
2. Digital Management of Assembly Data includes:
① Assembly information database. All data within the 4DBIM model is recorded, analyzed, managed, and maintained here. Due to the large volume of data generated during lean management, an object-oriented approach is adopted to encapsulate data efficiently, enhancing processing speed.
② Assembly management information platform. This platform creates a unified environment for information sharing, allowing all stakeholders in the assembly process to collaborate seamlessly. It supports data statistics, analysis, logical sorting, and links data with management activities. Users can classify, search, access, analyze, and edit data consistently by retrieving information from the database.
③ Data exchange interface. This interface facilitates seamless data transfer between various management software tools. In the assembly schedule model, it primarily supports data exchange between modeling software and schedule management applications.
3. 4D Assembly Progress Management System comprises several components:
① 4D assembly progress management. Built on assembly construction progress management software, this framework uses standardized data protocols to enable data reading, writing, and exchange. Progress information is visualized not only through traditional bar charts and network diagrams but also dynamic 4D models.
② 4D assembly process simulation. This links the 3D solid model with the schedule and related construction resource information. Through algorithms, it establishes logical relationships between the assembly schedule, model, and resource allocation plan, enabling a visual simulation of the entire assembly process. Real-time progress tracking is achieved by integrating simulation results with on-site data inputs.
③ 4D dynamic resource management. This associates resource data with the 4DBIM model based on construction logic and allocates resources using specialized algorithms. On-site data recording allows monitoring, controlling, and adjusting resource usage in real time, ensuring efficient resource management throughout the project.
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