Nondestructive monitoring systems currently applied to evaluate existing bridges. This study aims to assess the service life of YangHwa steel bridge, Seoul, Korea, using short period nondestructive structural health monitoring system due to static and moving trucks effects. Different static and dynamic loads were carried out to evaluate the bridge behavior though change trucks’ positions and speeds. The reliability index, neutral axis position, curvatures modal, and frequency and dynamic factor changes are extracted and evaluated. A novel similarity index is investigated, and the analysis of wavelet spectrum is applied to evaluate the bridge behavior. The results show that the bridge is safe using different indices, such as reliability, neutral axis, similarity performance, and curvature modal, dynamic factor and frequency changes. All these indices values are reported to be lower than the standard American Association of State Highway Officials (AASHTO) values and previous inspections, and no abnormal conditions are observed. The similarity index and wavelet spectrum analysis are found to be useful tools to estimate the similarity performance and to estimate the dominant frequency change of the bridge, respectively.
Service-Life Evaluation of Existing Bridges Subjected to Static and Moving Trucks Using Structural Health Monitoring System: Case Study
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 24 , 5 ; 1593-1606
2020-05-01
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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