Compensation of Temperature Effects in Long-Term Monitoring of a Highway Bridge located in the Austrian Alps. (2017)

• Record Type: Journal Article
• Authors: Furtmüller, Thomas; Adam, Christoph
• Is Part Of: Procedia engineering. Volume 199(2017)
• Page Start: 2078
• Page End: 2083
• Publication Date: 2017
• Subjects: Structural Health Monitoring -- Damage Detection -- Temperature Effect -- Long-term Monitoring -- Automated System Identification; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.09.477
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: This contribution addresses the compensation of temperature effects on a natural frequency of a highway bridge located in the Austrian Alps with seasonal ambient temperature fluctuation above and below freezing. This frequency identified from the ambient acceleration response recorded in a five-year monitoring campaign shows a pronounced temperature dependency. Two different methods are proposed and effectively applied to compensate this undesired temperature effect. In the first approach a direct correlation between natural frequency and ambient temperature is established, whereas the more sophisticated approach is based on a dynamic time-series model of Box-Jenkins type.