
Proceedings Paper
Estimation of deflections of bridge by two-step model updating approach based on ambient acceleration measurementsFormat | Member Price | Non-Member Price |
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Paper Abstract
For the deflection measurement of a bridge, sensor inaccessibility due to the reference point (fixed point) may cause lots
of inconvenience and increase of installation cost and time. Therefore, an alternative indirect deflection estimation
method is proposed utilizing the FE model updating with measured acceleration data from an ambient vibration test. For
the fast and stable optimization during the model updating, two step model updating approach is additionally proposed.
To investigate the effects of used modal quantities and their weighting factors, extensive model updating was carried out
by applying several kinds of data sets: using only natural frequencies, using only mode shapes, and using both of them,
By simulating the load test on each of the updated model, deflections were estimated and compared with the real
measured deflection data in the load test.
Paper Details
Date Published: 8 April 2008
PDF: 10 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 693220 (8 April 2008); doi: 10.1117/12.776155
Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)
PDF: 10 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 693220 (8 April 2008); doi: 10.1117/12.776155
Show Author Affiliations
Soojin Cho, Korea Advanced Institute of Science and Technology (South Korea)
Jin-Hak Yi, Korea Ocean Research and Development Institute (South Korea)
Jin-Hak Yi, Korea Ocean Research and Development Institute (South Korea)
Chung-Bang Yun, Korea Advanced Institute of Science and Technology (South Korea)
Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)
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