Effect of sensor placement on operational modal analysis of steel girder bridges

Matthew J. Whelan; Michael V. Gangone; Kerop D. Janoyan

doi:10.1117/12.880527

15 April 2011 Effect of sensor placement on operational modal analysis of steel girder bridges

Matthew J. Whelan, Michael V. Gangone, Kerop D. Janoyan

Proceedings Volume 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011; 79820L (2011) https://doi.org/10.1117/12.880527
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

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.

Citation Download Citation

Matthew J. Whelan, Michael V. Gangone, and Kerop D. Janoyan "Effect of sensor placement on operational modal analysis of steel girder bridges", Proc. SPIE 7982, Smart Sensor Phenomena, Technology, Networks, and Systems 2011, 79820L (15 April 2011); https://doi.org/10.1117/12.880527

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