Dynamic Testing and Modal Identification of a Concrete-filled Steel Tubular Arch Bridge under Natural Excitation

DOI

10.2991/icmia-16.2016.112How to use a DOI?

Keywords

Arch bridge; Concrete-filled steel tubular; Natural excitation; Dynamic testing; Operational modal identification

Abstract

Rapid progresses have been made in design and erection technologies of concrete-filled steel tubular arch bridge in recent years. However, the research on dynamic properties of this type of bridge is far from mature. Generally, the dynamic properties are analyzed using numerical models. This paper presents the results of experimental study on dynamic properties of a concrete-filled steel tubular arch bridge. The dynamic testing of the bridge is performed by collecting acceleration responses stimulated by natural excitation. The sensor placement, the signal acquisition and measurement setups are given in detail. Dynamic properties, including modal frequencies and mode shapes of low-order modes, are identified from the ambient responses using frequency domain decomposition method. The identified modal properties could be used as initial state parameters in model updating, structural health monitoring or safety evaluation.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yulin Chen
AU  - Huiqin Chen
AU  - Liwei Huang
PY  - 2016/11
DA  - 2016/11
TI  - Dynamic Testing and Modal Identification of a Concrete-filled Steel Tubular Arch Bridge under Natural Excitation
BT  - Proceedings of the 2016 5th International Conference on Measurement, Instrumentation and Automation (ICMIA 2016)
PB  - Atlantis Press
SN  - 1951-6851
UR  - https://doi.org/10.2991/icmia-16.2016.112
DO  - 10.2991/icmia-16.2016.112
ID  - Chen2016/11
ER  -