Effects of various outdoor conditions on Structural Health Monitoring (SHM) of bridges using data from Luxembourg

Dakhili, Khatereh; Kebig, Tanja; Maas, Stefan

doi:10.51202/9783181023792-209

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Effects of various outdoor conditions on Structural Health Monitoring (SHM) of bridges using data from Luxembourg

Dakhili, Khatereh; Kebig, Tanja; Maas, Stefan

2022 • In VDI-Berichte 2379, 7. VDI-Fachtagung Baudynamik 27. und 28. April 2022, Würzburg

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https://hdl.handle.net/10993/51493

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10.51202/9783181023792-209

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Keywords :

Structural Health Monitoring (SHM); prestressed concrete bridges; temperature effects; static experiments; modal analysis

Abstract :

[en] An increasing number of bridges are approaching the end of their service life due to corrosion and fatigue. Damages can be detected by performing regular measurements of characteristic values and comparing them with reference state data when there is no damage in the bridge. Unfortunately, environmental factors such as temperature variations have a considerable impact on the measurements and structural properties, such as stiffness. Since these environmental effects can be in the same order as damage, it is important to quantify them and reduce their effect before damage assessment. This paper aims to establish a correct reference model by investigating the parameters that affect structural responses. Doing so enables discrimination between structural property changes caused by damage and parameters such as temperature variations, load uncertainties, and various bearings. In this regard, several static and dynamic experiments are performed on a full scale undamaged prestressed concrete beam from a demolished bridge, and the results are reported.
[de] Immer mehr Brücken nähern sich aufgrund von Korrosion und Ermüdung dem Ende ihrer Nutzungsdauer. Schäden können durch regelmäßige Messung charakteristischer Größen und dem Vergleich mit Referenzdaten (z. B. Daten aus dem unbeschädigten Zustand der Brücke) festgestellt werden. Leider haben Umweltfaktoren wie Temperaturschwankungen einen erheblichen Einfluss auf die Messwerte und strukturellen Eigenschaften, wie z. B. die Steifigkeit. Da die Auswirkungen dieser Umwelteinflüsse in der gleichen Größenordnung wie Schäden liegen können, ist es wichtig, sie vor der Schadensbewertung zu quantifizieren und zu kompensieren. Ziel dieser Arbeit ist es, ein korrektes Referenzmodell zu erstellen, indem die Parameter untersucht werden, die die strukturellen Messgrößen beeinflussen. Dies ermöglicht eine Unterscheidung zwischen den durch Schäden verursachten Veränderungen der Struktureigenschaften und Parametern wie Temperaturschwankungen, Lastunsicherheiten und verschiedenen Lagerungen. Zu diesem Zweck werden mehrere statische und dynamische Experimente an einem unbeschädigten Spannbetonbalken in Originalgröße aus einer Abrissbrücke durchgeführt und die Ergebnisse vorgestellt.

Disciplines :

Mechanical engineering
Civil engineering

Author, co-author :

Dakhili, Khatereh ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)

Kebig, Tanja

Maas, Stefan ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)

External co-authors :

Language :

English

Title :

Effects of various outdoor conditions on Structural Health Monitoring (SHM) of bridges using data from Luxembourg

Publication date :

April 2022

Event name :

7. VDI-Fachtagung Baudynamik

Event place :

Würzburg, Germany

Event date :

from 27-04-2022 to 28-04-2022

Main work title :

VDI-Berichte 2379, 7. VDI-Fachtagung Baudynamik 27. und 28. April 2022, Würzburg

Publisher :

VDI Verlag GmbH, Düsseldorf, Germany

ISBN/EAN :

978-3-18-092379-6

Pages :

209-220

Additional URL :

https://elibrary.vdi-verlag.de/10.51202/9783181023792/baudynamik-2022

FnR Project :

FNR14008775 - New Methods For Bridge Damage Assessment, 2019 (15/11/2020-14/11/2024) - Stefan Maas

Funders :

FNR - Fonds National de la Recherche [LU]

Available on ORBilu :

since 04 July 2022

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