Structures Congress 2018
Application of a Sequence-Free Iterative Structural Identification Framework for Reserve Capacity Estimation of a Steel-Concrete Composite Bridge
Publication: Structures Congress 2018: Bridges, Transportation Structures, and Nonbuilding Structures
ABSTRACT
Most civil engineering structures are designed using justifiably conservative models with the goal of achieving life-safety. The use of conservative models during design and safe construction practices creates reserve capacity enabling structures to last well beyond their design life. Understanding structural behaviour can enhance the effectiveness of asset-management tasks such as retrofit or replacement of these structures. With advances in sensing and computing technology, it is now possible to interpret vast amounts of measurement data to evaluate structural performance. In this paper, the application of a sequence-free iterative structural identification framework on a steel-concrete composite bridge is presented. The iterative nature of decision-making is illustrated through varying conditions during the service life of the bridge, in this case increased traffic intensity. The engineer utilises new information as it becomes available to update knowledge of structural behaviour and thus update predictions of reserve capacity.
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ACKNOWLEDGEMENTS
This work was funded by the Swiss National Science Foundation under contract no. 200020-169026 and Singapore-ETH Centre (SEC) under contract no. FI 370074011-370074016. The authors would like to acknowledge the assistance provided by A. Nussbaumer in elaboration of the case study and fatigue-life evaluation.
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Published In
Structures Congress 2018: Bridges, Transportation Structures, and Nonbuilding Structures
Pages: 275 - 286
Editor: James Gregory Soules, CB&I
ISBN (Online): 978-0-7844-8133-2
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Apr 17, 2018
Published in print: Apr 17, 2018
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