RAILWAY BRIDGE CONDITION ASSESSMENT BASED ON STATE-OF-THE-ART REALITY CAPTURE TECHNOLOGIES: APPLICATION TO A CASE STUDY

Abstract

Structural visual inspection documentation is essential for monitoring, maintaining, rehabilitating, and reinforcing structures. Close-Range Photogrammetry (CRP) and Terrestrial Laser Scanners (TLS) are cutting-edge technologies that are commonly used in surveying. In this article, these technologies were integrated to capture a railway bridge. The lower deck and lateral deck surfaces were captured using TLS, while the upper deck, track and laterals of the deck were captured using CRP-UAV photogrammetry. Post-processing techniques allowed the fusion of TLS and CRP models to produce a precise 3D model of the entire railway bridge deck. (c) 2023, European Council on Computing in Construction (EC3). All rights reserved.