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A Nonlinear Model Inversion to Estimate Dynamic Soil Stiffness of Building Structures

Ebrahimian, Hamed and Ghahari, S. Farid and Asimaki, Domniki and Taciroglu, Ertugrul (2018) A Nonlinear Model Inversion to Estimate Dynamic Soil Stiffness of Building Structures. In: Geotechnical Earthquake Engineering and Soil Dynamics V: Numerical Modeling and Soil Structure Interaction. Geotechnical Special Publication. No.292. American Society of Civil Engineers , Reston, VA, pp. 293-299. ISBN 9780784481479.

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This study presents an output-only model inversion method to jointly estimate the model parameters and foundation input motions in structural models. The model inversion is based on Bayesian finite element model updating using the measured seismic response of the structure. The model parameters to be estimated consist of parameters characterizing the structural model, dynamic soil springs (to account for inertial soil structure interaction effects), and Rayleigh damping. We use the recorded response of the Millikan Library building to the 2002 Yorba Linda earthquake for validation study, in which the recorded structural responses are used to update the structural model resting on soil springs and dashpots. This study is a step forward towards developing model inversion methods that can be used with seismic response of real-world buildings to identify the Rayleigh damping and dynamic soil springs parameters.

Item Type:Book Section
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URLURL TypeDescription
Ebrahimian, Hamed0000-0003-1992-6033
Asimaki, Domniki0000-0002-3008-8088
Additional Information:© 2018 American Society of Civil Engineers. Published online: June 07, 2018.
Series Name:Geotechnical Special Publication
Issue or Number:292
Record Number:CaltechAUTHORS:20190522-151717317
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95710
Deposited By: Tony Diaz
Deposited On:22 May 2019 22:25
Last Modified:03 Oct 2019 21:16

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