Consideration of confirmation method of on-site constructability in steel bridge maintenance using augmented reality

Abstract

In the maintenance work of steel bridges, repairs and reinforcements are carried out to improve performance deterioration due to corrosion or fatigue, or to meet the requirements of the latest standards. Repairs and reinforcements often involve adding new members such as patch plates to existing members, or replacing members. It is necessary to understand the detailed shape and dimensions by measuring the existing members, as well as to conduct a three-dimensional examination of the structure and construction method based on sufficient knowledge and experience. Aiming to improve productivity, we focused on easy-to-understand three-dimensional augmented reality technology, which allowed us to image new members by directly seeing the existing members on site. We considered incorporating into practice a method to confirm the installation status in three dimensions in advance. As a result, we clarified that it can be implemented easily with sufficient accuracy.