000022045 001__ 22045
000022045 005__ 20170622145953.0
000022045 04107 $$aeng
000022045 046__ $$k2015-05-25
000022045 100__ $$aRalbovsky, Marian
000022045 24500 $$aUNCERTAINTY OF BRIDGE VIBRATION PROPERTIES AND ITS CONSEQUENCE FOR DAMAGE IDENTIFICATION

000022045 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022045 260__ $$bNational Technical University of Athens, 2015
000022045 506__ $$arestricted
000022045 520__ $$2eng$$aThis study deals with the topic of bridge health monitoring based on identification of bridge vibration properties, which are influenced by uncertainties. Focus is laid on quantification of the uncertainties from continuous monitoring data. The determined uncertainties are then used in probabilistic evaluation of structural state. The purpose is to acquire besides the “best-match” structural state also the reliability of identification. A method for automated extraction of modal parameters and evaluation of their uncertainties is presented. It comprises clustering and statistical evaluation of Stochastic Subspace Identification system poles. The statistical properties of modal parameters are used to build a set of probabilistic variables sampled using Monte-Carlo Simulation. The generated sets are used for probabilistic damage detection, which uses a forward approach of finding the best match within a database of precalculated structural states. The presented study was performed using monitoring data acquired on a prestressed concrete box-girder bridge in course of 9 months of continuous data recording.

000022045 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022045 653__ $$aUncertainty, Modal properties, Damage Detection, Clustering, Monte-Carlo Simulation.

000022045 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022045 720__ $$aRalbovsky, Marian$$iVorwagner, Alois$$iKwapisz, Maciej
000022045 8560_ $$ffischerc@itam.cas.cz
000022045 8564_ $$s482847$$uhttp://invenio.itam.cas.cz/record/22045/files/C1069.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022045 962__ $$r22030
000022045 980__ $$aPAPER