Experimental and operational modal analysis of a bio-composite pedestrian bridge

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

With the aim of reducing the carbon footprint of the construction industry, three pedestrian bridges, are
currently being developed as Smart Circular Bridges (SCB). The bridges innovate through the use of a novel
bio-composite material and by incorporating Structural Health Monitoring (SHM) technology, consisting of
accelerometers and embedded optical strain sensors. This paper discusses the SHM setup and gives initial
results from the first installed SCB. Analysis from a controlled test, consisting of an experimental modal
analysis when the bridge was still in the factory, is compared to results found from a field test during the
first months of operational use. Here, the acceleration data is processed using automated operational modal
analysis. The effect of environmental variables on tracked frequencies and a strategy for simplifying datanormalization of the dynamic properties are detailed. Finally, alternative machine learning strategies could
be used to detect anomalies in the spectrum or detect events occurring on the bridge from SHM data only.
Original languageEnglish
Title of host publicationProceedings of ISMA2022 International Conference on Noise and Vibration Engineering USD2022 International Conference on Uncertainty in Structural Dynamics
PublisherKU Leuven, Departement Werktuigkunde (LMSD)
Pages1436-1449
Number of pages14
Publication statusPublished - 2022
Event2022 ISMA International Conference on Noise and Vibration Engineering - KU Leuven, Leuven, Belgium
Duration: 12 Sep 202214 Sep 2022

Conference

Conference2022 ISMA International Conference on Noise and Vibration Engineering
CountryBelgium
CityLeuven
Period12/09/2214/09/22

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