Researchers in Purdue Polytechnic have developed a software method that converts 2D bridge drawings into 3D models in a fraction of the time traditionally required.
Jiansong Zhang, a professor in the Bowen School of Construction, co-led the creation of the semi-automatic method with Temitope Akanbi. The method processes uploaded 2D PDF drawings and generates completed 3D computer-aided design (CAD) models.
Building information modeling for bridges is typically completed manually on CAD software. This manual process takes an experienced bridge engineer approximately five hours for a single bridge. Zhang's team tested their new software on six bridges and reduced the average processing time to 10 minutes and 43 seconds.
The automated system completes the task in just 3.33% of the time typically required to model bridges. The system outputs the 3D models into Industry Foundation Classes (IFC) files. These files provide standard compatibility with existing industry software.
Civil engineers and project managers can use the technology to rapidly create 3D renderings of new bridges. The software also helps infrastructure professionals develop maintenance schedules for existing bridges and generate digital twins for construction planning.
Zhang and Akanbi published their methodology, "Framework for Developing IFC-Based 3D Documentation from 2D Bridge Drawings," in the American Society of Civil Engineers' Journal of Computing in Civil Engineering. The technology is currently available to license through the Purdue Innovates Office of Technology Commercialization.
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