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A computational framework for finite element modeling of traveling loads on bridges in dynamic regime
Author(s) -
De Risi Raffaele
Publication year - 2021
Publication title -
computer‐aided civil and infrastructure engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.773
H-Index - 82
eISSN - 1467-8667
pISSN - 1093-9687
DOI - 10.1111/mice.12745
Subject(s) - bridge (graph theory) , finite element method , structural engineering , structural dynamics , dynamic load testing , range (aeronautics) , reliability (semiconductor) , sensitivity (control systems) , computer science , pedestrian , engineering , civil engineering , physics , aerospace engineering , medicine , power (physics) , quantum mechanics , electronic engineering
The rigorous modeling of traveling loads on bridges in a dynamic regime is not an easy task as the traveling load contributes to the dynamic of the structural system with its mass and damping. In this paper, a simplified approach for traveling loads on bridges in dynamic regime is proposed. The main simplification consists in neglecting the traveling mass. The validity of the proposed simplification is checked with a sensitivity analysis considering a few realistic case‐study bridges. The ranges of velocity and traveling‐force/bridge‐weight ratio are identified. Eventually, the proposed methodology is applied to two case studies, (i) an existing Italian reinforced concrete viaduct and (ii) a pedestrian bridge. The applications show that the proposed simplified approach can be applied to a range of civil engineering problems such as the quantification of the structural reliability of existing structures or the assessment of pedestrian comfort.