'International Association for Bridge and Structural Engineering (IABSE)'
Abstract
Risk management plays a crucial role in the stakeholders’ decision making because it is directly related to safety, serviceability and economy. There is now a growing concern about how to relocate known risks into an acceptance threshold: this implies the evaluation of several options obtained from hazard scenarios considering the related consequences. In parallel, practitioners usually rely on standard tools for risk assessment, and on structural codes to compute performances. Although this approach is currently widely implemented, this research shows that hazardous situations can arise in properly designed infrastructures, due to errors in management. This paper deals with such issue, also highlighting a gap in current codes that could contribute to losses caused by unforeseen failure modes. In this study, a preliminary FMEA assessment was
performed to identify the failure modes that required a deeper quantitative analysis. In a second step, a quantitative analysis was implemented, using a modular methodology that combines reliability theory with a risk-based approach. The results evidenced that a wider analysis focused on the identification of vulnerable areas shall be considered in every stage of the asset management. Furthermore, the dynamic of this process is regulated by the established safety level concerning possible damages to people, production sites and commercial activities.This work was partly financed by FEDER funds
through the Competitivity Factors Operational
Programme - COMPETE and by national funds
through FCT Foundation for Science and
Technology within the scope of the project POCI01-0145-FEDER-007633. This work was supported
by the FCT Foundation for Science and Technology
under Grant SFRH/BD/145478/2019. This project
has received funding from the European Union’s
Horizon 2020 research and innovation
programme under grant agreement No 769255