Article (Scientific journals)
The Deformation Area Difference (DAD) method for condition assessment of reinforced structures
Erdenebat, Dolgion; Waldmann, Danièle; Scherbaum, Frank et al.
2018In Engineering Structures, 155, p. 315-329
Peer reviewed
 

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Keywords :
Deformation Area Difference Method; Condition assessment; Bridge construction; Localisation of damage; Inclination; Curvature; Deflection line
Abstract :
[en] The investigation and condition assessment of bridges have a very high priority in the construction industry today. Particularly, due to the fact that many bridge structures are getting old and partly reach the end of their useful life, the control and condition assessment of bridge structures have become very important and essential. The present research work introduces an efficient new method for condition assessment called the Deformation Area Difference (DAD) Method. This new method represents an attractive alternative to visual inspection and long-term monitoring. In this paper, the new method with its theoretical background is presented and explained by means of a laboratory experiment and some additional theoretical calculation examples. The experimental investigations have been realised on a reinforced concrete beam, which has been gradually loaded until failure. For each load step, the stiffness reduction and the apparent cracking have been monitored. High-precision measurements such as close-range photogrammetry, digital levelling and displacement sensors have been used for the determination of the deflection curve. The DAD method has been applied to identify the area of the crack pattern of the laboratory experiment. Furthermore, the method is discussed with regard to the load level and the precision of the deformation measurements. On the basis of the laboratory experiment, the applicability of the DAD method for damage detection could be proven. Furthermore, the sensitivity of the method with regard to the damage degree, the static system, the damage position and the impact of temperature variation were analysed.
Disciplines :
Civil engineering
Author, co-author :
Erdenebat, Dolgion ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Waldmann, Danièle ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Scherbaum, Frank
Teferle, Felix Norman ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
The Deformation Area Difference (DAD) method for condition assessment of reinforced structures
Publication date :
15 January 2018
Journal title :
Engineering Structures
Volume :
155
Pages :
315-329
Peer reviewed :
Peer reviewed
Focus Area :
Computational Sciences
Name of the research project :
STATOSTRUC
Available on ORBilu :
since 17 November 2017

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