Robustness of steel truss bridges: Laboratory testing of a full-scale 21-metre bridge span

Buitrago, Manuel, Bertolesi, Elisa ORCID: https://orcid.org/0000-0003-3258-0743, Calderón, Pedro A. and Adam, José M. 2021. Robustness of steel truss bridges: Laboratory testing of a full-scale 21-metre bridge span. Structures 29 , pp. 691-700. 10.1016/j.istruc.2020.12.005

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Abstract

This study aimed to experimentally analyse the robustness of riveted steel bridges based on truss-type structures and to define practical recommendations for early detection of local failures before they cause progressive structural collapse. Although there are many experimental studies on robustness and progressive collapse on buildings, those on bridges are either theoretical or deal with actual collapses. This paper describes a unique case of a 21 m full-scale bridge span tested under laboratory conditions with an extensive monitoring system, together with an experimental study to evaluate structural behaviour and robustness as damage or failure progressed in its elements. A linear-static finite-element analysis was also included to examine other possible causes not included in the experiment. The results proved the structural redundancy of this type of truss structure based on the joints’ resistance to bending moments and gave rise to a series of practical structural health recommendations to identify early failures and avoid progressive or sudden bridge collapse. The study carried out and the recommendations it produced are now being applied in three similar bridge case studies.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	2352-0124
Date of Acceptance:	1 December 2020
Last Modified:	24 Nov 2023 17:11
URI:	https://orca.cardiff.ac.uk/id/eprint/164052

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