The effect of crossing of trains in bridges safety analysis according to en 1991-2

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2021

Autores

Pinto, JR (Autor) Outra; Rui Calçada (Autor) FEUP; António Abel Henriques (Autor) FEUP

Ata de Conferência Internacional

Título: Concrete Structures: New Trends for Eco-Efficiency and Performance. Proceedings of the fib Symposium 2021

Páginas: 2009-2016

Indexação

Scopus

Outras Informações

ID Authenticus: P-00W-Z5T

Abstract (EN): This work is aimed to study the importance of crossing of trains passing over a varied range of precast concrete bridges on the dynamic response of these bridges. Continuous bridges with maximum spans within a range between 20m to 40m, with steps of 1.0m, have been selected. All the typology of trains in circulation were used (articulated trains, regular trains, conventional trains with and without limits defined in EN1991-2). Several scenarios with ranges of variation for each of the geometric parameters defined in EN1991-2 were defined to include future requirements for rolling stock: basic dimensions and performance (capacity, loading gauge, axle load, train and car length, configuration of trainset, compatibility with infrastructure, maximum speed, acceleration and deceleration). The definition of new geometric solutions for trains and the crossing position of trains requires that all possible variation scenarios are covered, so this study was carried out through simulations. For each speed and for each of the situations presented above, 100.000 simulations were performed. The results presented in this study intend to contribute for the discussion of the safety factor applied to the Serviceability Limit State of vertical acceleration defined in the EN1991-2. © Fédération Internationale du Béton (fib) ¿ International Federation for Structural Concrete.

Idioma: Inglês

Tipo (Avaliação Docente): Científica