Uncertainty and Track Stability: Analysis of Partial Safety Factors for High-Speed Railway Bridges

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2022-12

Autores

António Abel Henriques (Autor) FEUP; Gonçalo Ferreira (Autor) FEUP; Pedro Aires Montenegro (Autor) FEUP; Rui Calçada (Autor) FEUP

Ata de Conferência Internacional

Título: Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures: EUROSTRUCT 2021

Páginas: 1216-1225

1st Conference of the European Association on Quality Control of Bridges and Structures, EUROSTRUCT 2021

29 August 2021 through 1 September 2021

Indexação

Scopus - 0 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil ; Ciências Tecnológicas > Engenharia > Engenharia civil > Engenharia estrutural

FOS: Ciências da engenharia e tecnologias > Engenharia civil

Outras Informações

ID Authenticus: P-00V-V3Z

DOI: 10.1007/978-3-030-91877-4_138

Abstract (EN): Short-span railway bridges subjected to high-speed traffic are structures where dynamic effects are mandatory. Additionally, the variability associated with materials and geometric characteristics introduces uncertainty to the safety assessment of railway traffic. This work discusses the current norm¿s limit for vertical deck acceleration regarding the evaluation of stability on ballasted tracks, as stated on Annex A2 of EN1990. A probabilistic methodology to define a partial safety factor is presented, employing dynamic analyses and Monte Carlo simulations. The evaluation of a case study is presented for a single-span filler-beam bridge of the Portuguese Railways Network. The results allow the definition of deterministic design scenarios that are compared to the simulations¿ outcome. Conclusions show consistent partial safety factors with the norm¿s limit, contributing to further discussion of this factor. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Idioma: Inglês

Tipo (Avaliação Docente): Científica