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Proceedings Paper

Effect of sensor placement on operational modal analysis of steel girder bridges
Author(s): Matthew J. Whelan; Michael V. Gangone; Kerop D. Janoyan
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Paper Abstract

With the advent and development of low-cost wireless structural health monitoring systems, the task of routinely assessing the in-service condition of highway bridges through distributed sensor-based measurements is an increasingly feasible component of bridge safety and management practice. Bridge monitoring encompasses placement of often a limited number of distributed sensors across a relatively large and complex structural system. Consequently, the selection of proper sensor locations is imperative to extraction of the most value from the recorded measurements. An experimental investigation is presented wherein sensor placement on the superstructure girders or primary beams is contrasted to the response measured on the surface of the bridge deck. The effect on the dataset richness, as evidenced by the modal content, is presented and conclusions regarding optimal placement for this structure type are presented. To affirm the plausibility of the observed responses and conclusions drawn, a finite element analysis is also performed on a model developed from the as-built drawings.

Paper Details

Date Published: 15 April 2011
PDF: 10 pages
Proc. SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011, 79820L (15 April 2011); doi: 10.1117/12.880527
Show Author Affiliations
Matthew J. Whelan, The Univ. of North Carolina at Charlotte (United States)
Michael V. Gangone, Clarkson Univ. (United States)
Kerop D. Janoyan, Clarkson Univ. (United States)

Published in SPIE Proceedings Vol. 7982:
Smart Sensor Phenomena, Technology, Networks, and Systems 2011
Wolfgang Ecke; Kara J. Peters; Theodore E. Matikas, Editor(s)

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