A Platform for Efficient Ground Motion Selection Considering Multi-Target Spectra
Publication: Lifelines 2022
ABSTRACT
We developed an efficient platform to select and consistently scale recorded earthquake ground motions. Given a set of target response spectra for horizontal and vertical ground motion components, a set of ground motions is selected and scaled such that: (1) the mean spectra of the selected and scaled horizontal and vertical motions would follow their respective target spectra; (2) the selected set of horizontal and vertical spectra would preserve the prescribed period-dependent record-to-record variability for their respective components; and (3) for each set of horizontal and vertical components, a single scaling factor is used; thus, preserving the relative amplitude and phasing of the original recorded horizontal and vertical components. Additionally, significant improvement in computational efficiency is achieved by employing a modified version of a greedy record selection algorithm.
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Lifelines 2022
Pages: 175 - 184
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Published online: Nov 16, 2022
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