A computational framework for finite element modeling of traveling loads on bridges in dynamic regime. (27th July 2021)

• Record Type: Journal Article
• Authors: De Risi, Raffaele
• Is Part Of: Computer-aided civil and infrastructure engineering. Volume 37:Number 4(2022)
• Page Start: 470
• Page End: 484
• Publication Date: 2021-07-27
• Subjects: Civil engineering -- Data processing -- Periodicals; Computer-aided engineering -- Periodicals; 624.0285
• DOI: 10.1111/mice.12745
• Languages: English
• ISSNs: 1093-9687

Abstract

Abstract: 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.