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Proceedings Paper

Bridge condition assessment from dynamic response collected using wireless sensor networks
Author(s): A. K. M. Anwarul Islam; Hiwa F. Hamid; Frank Li
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Paper Abstract

We propose dynamic response based condition assessment of prestressed box beam (PSBB) bridges that will be more realistic and cost-efficient. The hypothesis includes that the dynamic response is a sensitive indicator of the physical integrity and condition of a structure. We deployed two wireless sensor networks for collecting the real-time dynamic response of a 25-year old PSBB bridge under trucks with variable loads and speeds. The dynamic response of the bridge at its newest condition was collected from FE simulations of its 3-D FE models mimicking field conditions. The FE model was validated using experimental and theoretical methods. We used Fast Fourier Transform and peak-picking method to determine peak amplitudes and their corresponding fundamental frequencies at its newest and current condition. The analyses interestingly indicate a 37% reduction in its fundamental frequency over a 25-year service life. This reduction has been correlated to its current visual inspection to develop application software for quick and efficient condition assessment of PSBB bridges. The research outcome will provide an efficient and cost-effective solution for bridge inspection and maintenance.

Paper Details

Date Published: 9 March 2014
PDF: 12 pages
Proc. SPIE 9064, Health Monitoring of Structural and Biological Systems 2014, 90640B (9 March 2014); doi: 10.1117/12.2044265
Show Author Affiliations
A. K. M. Anwarul Islam, Youngstown State Univ. (United States)
Hiwa F. Hamid, Youngstown State Univ. (United States)
Frank Li, Youngstown State Univ. (United States)

Published in SPIE Proceedings Vol. 9064:
Health Monitoring of Structural and Biological Systems 2014
Tribikram Kundu, Editor(s)

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