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

• Type: Article in International Conference Proceedings Book
• Date: 2022-12

Authors

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

Conference proceedings International

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

Pages: 1216-1225

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

29 August 2021 through 1 September 2021

Indexing

Scopus - 2 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Civil engineering ; Technological sciences > Engineering > Civil engineering > Structural engineering

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific