During construction, the use of BIM visualization has greatly facilitated the process and significantly enhanced construction accuracy. Traditionally, workers had to flip through extensive drawings, carefully searching for relevant sections in both drawings and documents, then manually or digitally recording or marking information. This method relied heavily on mental spatial organization and association, often leading to issues such as forgetting, misreading, or miscalculating details.
BIM technology’s visualization capability addresses many of these challenges by providing a clear model right before users’ eyes, making related information easy to comprehend. Currently, BIM visualization is primarily applied in three key areas: construction progress simulation, construction process guidance, and on-site model simulation.
Construction Progress Simulation
The most common application of BIM during the construction phase is construction progress simulation, often referred to as “4D construction progress.” BIM integrates information models by linking classification and coding data within the model to corresponding project schedule details. This integration automatically aligns the model with the construction timeline.
Many platforms now support importing schedule files directly from construction planning software, such as XML format files. Once progress data is integrated, the model allows users to view components’ current stages and task names or check construction nodes at specific time points. This includes temporary site facilities and machinery used during construction.
When all stakeholders collaborate on the schedule, the model serves as a tool to control planned timelines—from equipment delivery to temporary facility removal. If delays occur, for example due to weather or safety incidents, adjustments can be made in one section, and subsequent tasks automatically update based on task dependencies. These dynamic updates are reflected clearly in the project bar chart, helping management teams to analyze progress, anticipate potential issues, and develop more effective plans.
On-Site and Model Simulation
Accurate and rational design results are crucial during construction. Errors can cause rework, waste resources, and delay progress, making simulation inspections essential. Collision detection is a key aspect of this process. Although many clashes are resolved during the design phase, real-world construction methods and techniques may still cause unforeseen conflicts.
Traditionally, factories produce components based on drawings, but discrepancies in dimensions can occur. BIM models, however, are built on precise dimensional data, allowing components to be assembled and simulated accurately, especially in steel structure projects. When load requirements specified in the model are met, BIM software can directly output manufacturing-ready files for cutting and processing.
Construction Process Guidance
BIM also plays a vital role in guiding construction processes. For example, the production sequence and construction steps of specific bridge components can be visually represented, helping workers clearly understand detailed procedures. Once construction models are established on-site, personnel can navigate and inspect the site virtually, providing a clearer and more intuitive understanding of any onsite issues.
This approach promotes a more organized work environment, reducing problems such as clutter, disorder, and hidden safety hazards in blind spots. For major construction methods, animations can simulate the process in advance, allowing evaluation of sequence, progress assurance, and process rationality. This helps prevent rework and unsafe practices, enabling timely discussion and finalization of construction strategies.
These outputs are accessible on both PCs and mobile devices. Onsite staff can use portable devices like iPads with browsing software to view models without carrying heavy drawings, enhancing their understanding of model relationships. Moreover, remote access to models is possible without requiring onsite network infrastructure.
Construction guidance images and videos produced by animation software such as 3ds Max, along with 3D drawings generated by modeling tools, provide fast, intuitive instruction. This is especially valuable for complex processes that are difficult to convey through traditional drawings or verbal explanations.
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