TY - GEN
T1 - Vibration-based scour monitoring
T2 - 33rd IMAC Conference and Exposition on Structural Dynamics, 2015
AU - Atamturktur, Sez
AU - Khan, Abdul
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Scouring is caused by the removal of bed material surrounding the piers and abutments and can rapidly compromise the integrity of a bridge structure and cause catastrophic failure. Such failures, which occur most frequently during peak flow periods, such as flooding, are a hindrance to emergency personnel trying to enter affected areas and to individuals trying to evacuate. As a countermeasure to mitigate the effects of the bed degradation, this article presents a vibration-based scour monitoring technique. This novel approach exploits the differences between the measured lowfrequency ambient excitations of a thin, flexible plate located in the flow and the same plate located in the sediment. The underlying principle is that a flexible plate excited by the turbulent flow vibrates at significantly higher amplitude compared to an identical plate placed within sediment. Laboratory and field results obtained at various flow conditions indicate that the vibration-based scour monitoring concept is able to supply reliable information regarding both scour and refill processes. This article details the underlying monitoring concept, the design and optimization of sensors, the evaluation of sensitivity of the developed sensors to environmental conditions, and their long-term field deployment.
AB - Scouring is caused by the removal of bed material surrounding the piers and abutments and can rapidly compromise the integrity of a bridge structure and cause catastrophic failure. Such failures, which occur most frequently during peak flow periods, such as flooding, are a hindrance to emergency personnel trying to enter affected areas and to individuals trying to evacuate. As a countermeasure to mitigate the effects of the bed degradation, this article presents a vibration-based scour monitoring technique. This novel approach exploits the differences between the measured lowfrequency ambient excitations of a thin, flexible plate located in the flow and the same plate located in the sediment. The underlying principle is that a flexible plate excited by the turbulent flow vibrates at significantly higher amplitude compared to an identical plate placed within sediment. Laboratory and field results obtained at various flow conditions indicate that the vibration-based scour monitoring concept is able to supply reliable information regarding both scour and refill processes. This article details the underlying monitoring concept, the design and optimization of sensors, the evaluation of sensitivity of the developed sensors to environmental conditions, and their long-term field deployment.
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U2 - 10.1007/978-3-319-15230-1_13
DO - 10.1007/978-3-319-15230-1_13
M3 - Conference contribution
AN - SCOPUS:84930510492
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 137
EP - 144
BT - Structural Health Monitoring and Damage Detection - Proceedings of the 33rd IMAC, a Conference and Exposition on Structural Dynamics, 2015
A2 - Niezrecki, Christopher
PB - Springer New York LLC
Y2 - 2 February 2015 through 5 February 2015
ER -