Nonlinear FE model updating of seismic isolated bridge instrumented during the 2010 Mw 8.8 Maule-Chile Earthquake
Author
dc.contributor.author
Li, Yong
Author
dc.contributor.author
Astroza, Rodrigo
Author
dc.contributor.author
Conte, Joel P.
Author
dc.contributor.author
Soto Muñoz, Pedro
Admission date
dc.date.accessioned
2019-05-29T13:41:02Z
Available date
dc.date.available
2019-05-29T13:41:02Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Procedia Engineering 199 (2017) 3003–3008
Identifier
dc.identifier.issn
18777058
Identifier
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10.1016/j.proeng.2017.09.397
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/169072
Abstract
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In this paper, nonlinear finite element model updating (FEMU) is performed to study the prediction accuracy of a state-of-the-art
finite element (FE) model of a seismic isolated bridge (SIB). The seismic isolator model parameters are updated in two phases:
using component-wise and system-wise FEMU. The isolator model parameter values estimated from 23 isolator component tests
show a large scatter, and a poor goodness-of-fit (GOF) of the bridge response to the 2010 Maule Earthquake is obtained when
most of those parameter sets are used for the isolator elements of the bridge FE model. In contrast, good agreement between the
FE predicted and measured bridge response is obtained when the isolator model parameters are calibrated using the bridge
response data recorded during the 2010 Mw 8.8 Maule, Chile Earthquake. The updated FE model is then used to reconstruct
response quantities not recorded to gain more insight into the effects of seismic isolation during a strong earthquake.