Ambient vibration tests and analysis of a multiple-span elevated bridge

X. Chen, P. Omenzetter, S. Beskhyroun

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

2 Citations (Scopus)
25 Downloads (Pure)

Abstract

Modal parameters (e.g., natural frequencies and mode shapes) describe the dynamic characteristics of bridge structures and their experimental identification is an important part of bridge assessment. More traditional experimental methods require artificial excitation by large equipment, which affects the normal operation of the bridge. However, reliable estimates of modal parameters can be extracted from ambient vibration caused by wind, traffic, environmental loads, etc. In this paper, the dynamic behavior of a 12 span, 700m long, curved, segmental, elevated concrete viaduct, recently constructed in Auckland, New Zealand, is investigated using ambient vibration tests and numerical modeling. Twelve vibration modes have been identified in the frequency range 0-10 Hz using two complementary modal parameter identification techniques: the peak picking method and stochastic subspace identification. Modal parameters estimated from ambient response have been compared with those obtained from a three-dimensional finite element model and good agreement demonstrated.

Original languageEnglish
Title of host publicationFrom Materials to Structures
Subtitle of host publicationAdvancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
PublisherCRC Press
Pages393-398
Number of pages6
ISBN (Print)9780415633185
DOIs
Publication statusPublished - 12 Aug 2013
Event22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012 - Sydney, NSW, Australia
Duration: 11 Dec 201214 Dec 2012

Conference

Conference22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
CountryAustralia
CitySydney, NSW
Period11/12/1214/12/12

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