Output-only identification of civil structures using nonlinear finite element model updating

Hamed Ebrahimian, Rodrigo Astroza, Joel P. Conte

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Resumen

This paper presents a novel approach for output-only nonlinear system identification of structures using data recorded during earthquake events. In this approach, state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with Bayesian Inference method to estimate (i) time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure, and (ii) the time history of the earthquake ground motion. To validate the performance of the proposed framework, the simulated responses of a bridge pier to an earthquake ground motion is polluted with artificial output measurement noise and used to jointly estimate the unknown material parameters and the time history of the earthquake ground motion. This proof-of-concept example illustrates the succeßful performance of the proposed approach even in the presence of high measurement noise.

Idioma originalInglés
Título de la publicación alojadaHealth Monitoring of Structural and Biological Systems 2015
EditoresTribikram Kundu
EditorialSPIE
ISBN (versión digital)9781628415414
DOI
EstadoPublicada - 2015
Publicado de forma externa
EventoHealth Monitoring of Structural and Biological Systems 2015 - San Diego, Estados Unidos
Duración: 9 mar. 201512 mar. 2015

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
Volumen9438
ISSN (versión impresa)0277-786X
ISSN (versión digital)1996-756X

Conferencia

ConferenciaHealth Monitoring of Structural and Biological Systems 2015
País/TerritorioEstados Unidos
CiudadSan Diego
Período9/03/1512/03/15

Nota bibliográfica

Publisher Copyright:
© 2015 SPIE.

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