The Boyne Viaduct: structural health monitoring and probabilistic analysis

摘要

The Boyne viaduct lies on the main Dublin-Belfast railway line and consists of a series of masonry arch spans and three steel truss spans. This work focuses on the central steel span (Fig 1, main image), which was constructed around 1932. As the structure is now beyond its expected design life, it is essential that it is appropriately assessed to ensure continued safe use. This paper describes a probabilistic Ultimate Limit State (ULS) assessment of the structure which was carried out and used design an optimal Structural Health Monitoring (SHM) strategy.