Numerical Modeling of a Tensioned Diagonals Replacement at a Historic Puddled Iron Bridge
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 5
Abstract
The historic Imperial Dom Pedro II Bridge, located in Bahia, Brazil, underwent a major rehabilitation program that began in 2018. All tensioned diagonals, made of puddled iron, were replaced with new components, made of stronger steel. This paper presents a numerical model of the Dom Pedro II Bridge capable of reproducing structural performance before and during the replacement work. Numerical results were verified by the experimental data derived from monitoring systems installed in the bridge on several occasions. The differences observed from the numerical results could be justified by the bridge’s age and maintenance condition. In general, the numerical results were fairly similar to the measured data, indicating the numerical solution could be used to assess other sequences of tensioned diagonal replacements. It was concluded that the replacement work improved the safety of the bridge, and the proposed modeling process may be suitable for other sequences of replacements, including other steel truss bridges.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Brasil (CAPES), Finance Code 001. The authors thank VLI Logística, the company responsible for the bridge, and the field team for their collaboration, work, and data provided throughout this research.
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Published In
Journal of Performance of Constructed Facilities
Volume 35 • Issue 5 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Nov 17, 2020
Accepted: Mar 31, 2021
Published online: Jul 1, 2021
Published in print: Oct 1, 2021
Discussion open until: Dec 1, 2021
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