Reference : Temperature effect on static and quasi-static bridge measurements

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Civil engineering Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/10993/55996

Title :	Temperature effect on static and quasi-static bridge measurements
Language :	English
Author, co-author :	Dakhili, Khatereh [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
	Kebig, Tanja [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
	Schäfer, Markus [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
	Maas, Stefan [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
	Bender, Michél []
	Zürbes, Arno [University of Luxembourg > > >]
Publication date :	2023
Main document title :	Life-Cycle of Structures and Infrastructure Systems
Peer reviewed :	Yes
Audience :	International
ISBN :	9781003323020
Event name :	Eighth International Symposium on Life-Cycle Civil Engineering (IALCCE 2023)Life-Cycle of Structures and Infrastructure Systems
Event date :	July 2-6, 2023
Abstract :	[en] The performance of bridge damage assessment based on model updating ap-proaches relies on correctly identifying the structural responses in the undamaged state. However, environmental uncertainties, such as temperature changes, influence structural responses in the same order of magnitude as damages. Therefore, a prestressed concrete bridge beam is studied in this paper. Temperature influences on static experiments in 2 test periods are minimized with physical temperature compensation technique. Displacement fluctuations decrease at least 60% after temperature compensation, making the summer and winter measurements comparable. Next, temperature-compensated Influence Lines (ILs), static flexibility and stiffness matrices are ob-tained. Comparing the results reveal the importance of performing measurements only on cloudy days. This paper contributes to differentiating between temperature effects and damages, which is crucial for a successful damage assessment.
Funders :	Fonds National de la Recherche - FnR
Permalink :	http://hdl.handle.net/10993/55996

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