Improving Knowledge of Structural System Behavior through Multiple Models
Publication: Journal of Structural Engineering
Volume 134, Issue 4
Abstract
A system identification and model updating methodology that accounts for factors influencing the reliability of identification is proposed. An important aspect of this methodology is the generation of a population of candidate models. This paper presents an analysis of error sources that are used to define model populations. A case study illustrates the need for such an approach even when a single conservative model has been appropriate for design. Data mining techniques such as principal component analysis and -means clustering combined to interpret model predictions. These methods are useful for estimating the dependability of system identification.
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Acknowledgments
This work is part of the current results of several years of funding by the Swiss National Science Foundation and the Commission for Technology and Innovation. The writers would like to thank B. Raphael for his support, and E. Bruehwiler, P. Kripakaran, S. Ravindran, and A. Salvo for their assistance with the Schwandbach Bridge case study.
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© 2008 ASCE.
History
Received: Jul 13, 2006
Accepted: Apr 30, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
Notes
Note. Associate Editor: Finley A. Charney
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