On the use of instantaneous power for near-fault record modification

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dc.contributor.authorZengin E.
dc.contributor.authorAbrahamson N.A.
dc.date.accessioned2024-03-13T10:00:59Z
dc.date.available2024-03-13T10:00:59Z
dc.date.issued2021
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2021 -- 28 June 2021 through 30 June 2021 -- -- 174550en_US
dc.description.abstractThe current seismic design and assessment procedures describe the seismic demand in terms of elastic spectral accelerations, which may not be adequate to capture the destructive effects of near-fault ground motions. The relevant characteristics of near-fault records, such as the presence of a velocity pulse, the pulse amplitude, and the pulse period (Tp), make the record selection and modification task more challenging. A newly proposed intensity measure, called Instantaneous Power (IP(T1)), takes into account the effects of velocity pulses on structural response. It has been shown that vector IM including IP(T1) and elastic spectral acceleration at the first mode period of structure Sa(T1) results in more reliable and accurate structural responses compared to the traditional IM, Sa(T1). A new matching method is developed to incorporate the effects of IP into the record modification process. The procedure combines a widely used time-domain spectral matching algorithm, RspMatch, and a velocity adjustment approach to simultaneously match the target response spectrum and IP spectrum. We investigate the extent to which controlling the IP parameter in the modification process affects the nonlinear structural response by comparing the results of single-degree-of-freedom (SDOF) systems and multi-degree-of-freedom (MDOF) system, under the sets of Sa-only matched and Sa- and IP- matched records. Our findings show that the consideration of IP in the record matching can help prevent potential bias in structural response. © 2021 COMPDYN Proceedings.en_US
dc.identifier.issn2623-3347
dc.identifier.scopus2-s2.0-85120801151en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://hdl.handle.net/20.500.12662/2907
dc.identifier.volume2021-Juneen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherNational Technical University of Athensen_US
dc.relation.ispartofCOMPDYN Proceedingsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectModificationen_US
dc.subjectNear-fault ground motionsen_US
dc.subjectRecord selectionen_US
dc.subjectSpectral matchingen_US
dc.subjectVelocity pulsesen_US
dc.titleOn the use of instantaneous power for near-fault record modificationen_US
dc.typeConference Objecten_US

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