Facilitating maintenance of existing bridges through digital twins
|Coordinator||Luleå tekniska universitet - Institutionen för samhällsbyggnad och naturresurser|
|Funding from Vinnova||SEK 990 000|
|Project duration||June 2019 - May 2022|
|Venture||The strategic innovation programme InfraSweden2030|
|Call||Solutions for sustainable transport infrastructure|
Purpose and goal
The aim of this project is the development of a digital twin of a concrete bridge and demonstrate its impact on asset management. First, a 3D geometry model would be generated using photogrammetry methods. Then, using non-destructive methods the model would be enhanced by in-depth information (material properties, damages, inner geometry). Finally, we would use virtual reality as support for maintenance and inspection. This will deliver a large evolutionary step in facility management by creating an immersive and interactive experience for the end-user.
Expected results and effects
Current bridge management system in Sweden contains basic information such as 2D drawings and inspection notes which have significant importance to the repair and alteration of constructions still in use. However, geometric deviations and material degradation may have a negative impact on the accuracy of structural assessment. Hence, a digital twin of the physical bridge representing the as-is condition will constitute a specific innovation in this project. This project will lift the current TRL to allow the techniques to migrate towards market application.
Planned approach and implementation
The study will focus on a concrete railway bridge. The selection is carried out in collaboration with Trafikverket. Photogrammetry-based scanning will be employed aiming to generate the geometric representation of the bridge. Semantic information will be needed for feeding the digital model with in-depth information obtained through non-destructive equipment. Lastly, guidelines for inspection and model updating will be developed. We would use virtual reality as support for maintenance and inspection.