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

• Type: Article in International Conference Proceedings Book
• Date: 2021

Authors

Pinto, JR (Author) Other; Rui Calçada (Author) FEUP; António Abel Henriques (Author) FEUP

Conference proceedings International

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

Pages: 2009-2016

Indexing

Scopus

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific