Conference proceeding
Modal analysis for damage identification: Past experiences and Swiss Z-24 bridge
PROCEEDINGS OF IMAC-XX: STRUCTURAL DYNAMICS VOLS I AND II, Vol.4753, pp.448-456
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
01 Jan 2002
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Abstract
This paper describes some results of damage identification studies performed for the Swiss Z-24 Bridge, a three-span post-tensioned concrete box girder structure. The data were sent to several researchers as part of a collaborative effort. Modal properties obtained from the ambient vibration tests of the bridge are utilized for damage identfication purposes. The writers performed these studies employing only the vertical test data for two measurement lines on the bridge deck, although various data sets and results for different spatial discretizations were provided for analyses. The subset of data utilized for the writer's studies represents a reasonable and feasible spatial discreatization that utilizes 40 sensors for condition evaluation of operating bridges. The writers present the deflected shapes of measurement lines under virtual uniformly distributed load, which is termed as the "Bridge Girder Condition Indicator" (BGCI). A total of 14 damage cases were analyzed for the Z-24 Bridge using the pseudo-modal flexibility based BGCI. In addition, the curvature of BGCI was also analyzed, The impact of each damage scenario was evaluated by examining the deflection profiles generated for the box girders.
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Details
- Title
- Modal analysis for damage identification: Past experiences and Swiss Z-24 bridge
- Creators
- F N CatbasA E AktanSPIE
- Publication Details
- PROCEEDINGS OF IMAC-XX: STRUCTURAL DYNAMICS VOLS I AND II, Vol.4753, pp.448-456
- Series
- PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
- Publisher
- Soc Experimental Mechanics Inc
- Number of pages
- 5
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- [Retired Faculty]
- Identifiers
- 991019170481004721
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- Web of Science research areas
- Engineering, Aerospace
- Engineering, Civil
- Engineering, Mechanical