Conditional Ground-Motion Model for Damaging Characteristics of Near-Fault Ground Motions Based on Instantaneous Power

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dc.contributor.authorZengin, Esra
dc.contributor.authorAbrahamson, Norman
dc.date.accessioned2024-03-13T10:33:07Z
dc.date.available2024-03-13T10:33:07Z
dc.date.issued2020
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe velocity pulse in near-fault ground motions has been used as a key characteristic of damaging ground motions. Characterization of the velocity pulse involves three parameters: presence of the pulse, period of the pulse, and amplitude of the pulse. The basic concept behind the velocity pulse is that a large amount of seismic energy is packed into a short time, leading to larger demands on the structure. An intensity measure for near-fault ground motions, which is a direct measure of the amount of energy arriving in short time, called instantaneous power (IP (T-1)), is defined as the maximum power of the bandpassfiltered velocity time series measured over a time interval of 0.5 T-1, in which T-1 is the fundamental period of the structure. The records are bandpass filtered in the period band (0.2 T-1-3 T-1) to remove the frequencies that are not expected to excite the structure. Zerin and Abrahamson (2020) showed that the drift is better correlated with the IP (T-1) than with the velocity pulse parameters for records scaled to the same spectral acceleration at T-1. A conditional ground-motion model (GMM) for the root IP is developed based on the 5%-damped spectral acceleration at T-1, the earthquake magnitude, and the rupture distance. This conditional GMM can be used for record selection for near-fault ground motions that captures the key features of velocity pulses and can lead to a better representation of the median and variability of the maximum interstory drift. The conditional GMM can also be used in a vector hazard analysis for spectral acceleration (T-1) and IP (T-1) that can be used for more accurate estimation of drift hazard and seismic risk.en_US
dc.identifier.doi10.1785/0120200124
dc.identifier.endpage2842en_US
dc.identifier.issn0037-1106
dc.identifier.issn1943-3573
dc.identifier.issue6en_US
dc.identifier.scopus2-s2.0-85096419923en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage2828en_US
dc.identifier.urihttps://doi.org/10.1785/0120200124
dc.identifier.urihttps://hdl.handle.net/20.500.12662/3779
dc.identifier.volume110en_US
dc.identifier.wosWOS:000592938000015en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSeismological Soc Ameren_US
dc.relation.ispartofBulletin Of The Seismological Society Of Americaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleConditional Ground-Motion Model for Damaging Characteristics of Near-Fault Ground Motions Based on Instantaneous Poweren_US
dc.typeArticleen_US

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