Torsion control in structures isolated with the triple friction pendulum system

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dc.contributor.authorOlivares, Claudio
dc.contributor.authorLlera Martin, Juan Carlos de la
dc.contributor.authorPoulos Campbell, Alan John
dc.date.accessioned2021-07-21T23:53:35Z
dc.date.available2021-07-21T23:53:35Z
dc.date.issued2020
dc.description.abstractA parametric study was carried out to investigate the torsional response of structures isolated with the Triple Friction Pendulum (TFP) system with building properties such as uncoupled torsional to lateral frequency ratio, , building slenderness, and mass and stiffness eccentricities. A simplified model of a parametric multistory structure and a small deformation model of the TFP, but with the ability to capture uplift, were used to perform parametric 3D non-linear dynamic analyses. The input ground motions were 20 Chilean records selected using a conditional mean spectrum. Response history results showed that uplift in the devices occurs in structures with large mass eccentricity, and in some extreme cases, normal force values in the TFPs may be as large as 6 times the nominal average gravitational load in each isolator. Torsional envelope response results also show that mass eccentric systems may undergo larger normalized edge amplification factors relative to stiffness eccentric systems, with values 2.5 and 1.8, respectively, and that torsional balance cannot be achieved naturally. Although rotations are small in magnitude due to seismic isolation, displacement values in resisting planes of the superstructure equidistant from the geometric center of the plan will be different. Moreover, structures with large present correlation values between response histories of torsion and translation measured at the geometric center of the plan near one, as well as values above zero for different and plan eccentricity, which implies no torsional control in the weak sense. It is concluded that parameter strongly influences the torsional amplification values computed herein.
dc.fechaingreso.objetodigital2023-03-28
dc.format.extent17 páginas
dc.fuente.origenConveris
dc.identifier.citationOlivares, C. I., de la Llera, J. C., & Poulos, A. (2020). Torsion control in structures isolated with the triple friction pendulum system. Engineering Structures, 216, 110503. https://doi.org/10.1016/j.engstruct.2020.110503
dc.identifier.doi10.1016/j.engstruct.2020.110503
dc.identifier.issn0141-0296
dc.identifier.urihttps://doi.org/10.1016/j.engstruct.2020.110503
dc.identifier.wosidWOS:000539276800051
dc.information.autorucEscuela de ingeniería ; Llera Martin, Juan Carlos de la ; 0000-0002-9064-0938 ; 53086
dc.information.autorucEscuela de ingeniería ; Poulos Campbell, Alan John ; 0000-0001-8654-1024 ; 177702
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final17
dc.pagina.inicio1
dc.revistaENGINEERING STRUCTURESes_ES
dc.rightsacceso restringido
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.subject.otherConstrucciones antisísmicases_ES
dc.subject.otherTorsiónes_ES
dc.subject.otherIngenieria de estructurases_ES
dc.titleTorsion control in structures isolated with the triple friction pendulum systemes_ES
dc.typeartículo
dc.volumen216
sipa.codpersvinculados70299
sipa.codpersvinculados53086
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