Graduate Thesis Or Dissertation
 

Numerical Characterization and Modeling Uncertainty of Frame-Spine and Frame-Spine-FLC Full-Scale Specimens Tested at E-Defense Shake-Table

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/0z7094087

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  • The characterization of the seismic performance of structures relies on numerical simulations. However, estimates of seismic response are subject to various sources of uncertainty, including modeling uncertainty. This research estimated the response of two full-scale structural specimens composed of a moment resisting frame, elastic spines, and force-limiting connections (FLC), which were tested at the E-Defense shake table in Japan. Estimates of the expected response included sources of modeling uncertainties to support the experimental testing plan. Modeling variations included deterministic modeling choices and continuous random variables based on several uncertainty groups, including uncertainties in modeling the specimen’s beam composite action, panel zone strength, damping, building mass, and spine-to-frame connections. Sensitivity of the estimated story drift ratios and floor accelerations to the continuous modeling variations were evaluated in terms of Monte Carlo Simulations. Results from the experimental testing program were compared with the numerical estimates, including the expected range of response due to modeling uncertainties. Estimates generally agreed with the experimental results. Estimates of the peak floor accelerations were more sensitive to variations in modeling inputs compared to estimates of the story drifts. In particular, assumptions for the spine-to-frame connection models in these systems significantly impacted estimates of peak accelerations. In highlighting those modeling features most important to response, these results can be used to guide future numerical models and post-test modeling calibrations.
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  • Pending Publication
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  • 2022-03-24 to 2024-04-24

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