Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structural Health Monitoring Based on Automated Operational Modal Analysis: Application to an Arch Bridge
This book chapter presents a strategy to perform the processing of data collected by dynamic monitoring systems in continuous operation, having in mind the evaluation of the structure health. This is based on the use of recently developed algorithms that are able to automatically perform the identification of the structure modal parameters from acceleration time series collected while the structure is in normal operation. From the analysis of the time evolution of natural frequencies associated with relevant modes, it is possible to perceive abnormal changes that might be associated with the appearance of structural damage. As it will be demonstrated throughout the chapter, this is only possible if adequate statistical tools are adopted to minimize the effects of environmental and operational factors, such as the ambient temperature or the traffic intensity over a bridge, on the experimentally identified modal parameters.
The presentation of the essential theoretical aspects behind the main processing steps is combined with their exemplification on the analysis of data collected by a dynamic monitoring system in continuous operation on a concrete arch bridge at the city of Porto, in Portugal.
Structural Health Monitoring Based on Automated Operational Modal Analysis: Application to an Arch Bridge
This book chapter presents a strategy to perform the processing of data collected by dynamic monitoring systems in continuous operation, having in mind the evaluation of the structure health. This is based on the use of recently developed algorithms that are able to automatically perform the identification of the structure modal parameters from acceleration time series collected while the structure is in normal operation. From the analysis of the time evolution of natural frequencies associated with relevant modes, it is possible to perceive abnormal changes that might be associated with the appearance of structural damage. As it will be demonstrated throughout the chapter, this is only possible if adequate statistical tools are adopted to minimize the effects of environmental and operational factors, such as the ambient temperature or the traffic intensity over a bridge, on the experimentally identified modal parameters.
The presentation of the essential theoretical aspects behind the main processing steps is combined with their exemplification on the analysis of data collected by a dynamic monitoring system in continuous operation on a concrete arch bridge at the city of Porto, in Portugal.
Structural Health Monitoring Based on Automated Operational Modal Analysis: Application to an Arch Bridge
Springer Environmental Sci.,Engineering
Garevski, Mihail (Herausgeber:in) / Magalhães, Filipe (Autor:in) / Cunha, Álvaro (Autor:in) / Caetano, Elsa (Autor:in)
28.10.2012
28 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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