Earthquake-Resilience-Based Control Solutions for the Extended Benchmark Cable-Stayed Bridge
Publication: Journal of Structural Engineering
Volume 142, Issue 8
Abstract
Structural control solutions can offer a decisive contribution to reducing the consequences of strong events in earthquake-affected areas, enhancing structural resilience. Furthermore, the inherent feature of some control systems, which can adapt themselves to different loading levels, can be exploited when structural conditions change due to local failures. This occurs by changing the working parameters of the control system in real time or, even if very short, over the period between two seismic events. This work deals with resilience of seismic control solutions for cable-stayed bridges through a case study represented by a standard bridge control benchmark from the literature. A strategy for recovering the optimal configuration of the controlled bridge after a damaging event is presented. Emphasis is given to the time interval between the damage occurrence and the restoration, which represent the essential aspect of the resilient behavior. Finally, the formulation of a robustness index and general procedures that suggest how to quantify resilience for the control system of cable-stayed bridges in the context of multiple hazards are explored.
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Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 8 • August 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Mar 4, 2014
Accepted: Jul 8, 2015
Published online: Aug 5, 2015
Discussion open until: Jan 5, 2016
Published in print: Aug 1, 2016
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