Facilitating maintenance of existing bridges through digital twins

Reference number
Coordinator Luleå tekniska universitet - Institutionen för samhällsbyggnad och naturresurser
Funding from Vinnova SEK 990 000
Project duration June 2019 - May 2022
Status Ongoing
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.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 10 April 2019

Reference number 2019-01115

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