Epistemic uncertainty in the seismic response of RC free-plan buildings

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dc.contributor.authorChacón, Matías F.
dc.contributor.authorLlera Martin, Juan Carlos de la
dc.contributor.authorHube Ginestar, Matías Andrés
dc.contributor.authorMarques, J.
dc.contributor.authorLemnitzer, A.
dc.date.accessioned2020-07-23T15:53:56Z
dc.date.available2020-07-23T15:53:56Z
dc.date.issued2017
dc.description.abstractComplex building models consider multiple degrees of freedom and modeling assumptions that influence the accuracy of the predicted seismic response. This study evaluates the epistemic uncertainty inherent to modeling assumptions by evaluating the seismic response behavior of six instrumented reinforced concrete free-plan structures in Santiago, Chile. The free-plan structural concept is frequently used in office buildings and consists of a core of shear walls, a perimeter frame, and a flat slab connecting both lateral force resisting systems. Epistemic uncertainties studied in this paper are inherent to the following modeling assumptions: (1) the type of finite elements used in the building models; (2) the in-plane and out-of-plane stiffness of the diaphragms; (3) the interaction between the basement and the surrounding soil; and (4) the decision where to apply base fixity. The response uncertainty was first evaluated by comparing predicted and measured vibration periods using ambient vibrations and aftershock records of the 2010 Maule, Chile earthquake. Additionally predicted global and local seismic response parameters such as story shears, torques, and drifts were compared between a predefined reference model typically used in design and a set of variant models. A statistical evaluation of the modeling uncertainty showed a strong dependency on the response parameter considered. Larger uncertainties were observed for shear force related response parameters, including the influence of soil-structure interaction on base and story shears, while uncertainties for predicting fundamental periods or the depth at which building fixity was assumed had moderate impact on the overall building response. In general, uncertainties identified in core forces were larger than uncertainties in story forces and also larger at the underground stories than in comparison to upper levels.
dc.fechaingreso.objetodigital2023-01-16
dc.format.extent16 páginas
dc.fuente.origenConveris
dc.identifier.citationChacón, M. F., Juan, C., Hube, M. A., Marques, J., & Lemnitzer, A. (2017). Epistemic uncertainty in the seismic response of RC free-plan buildings. Engineering Structures, 141,687-702.https://doi.org/10.1016/j.engstruct.2017.03.015
dc.identifier.doi10.1016/j.engstruct.2017.03.015
dc.identifier.issn0141-0296
dc.identifier.urihttps://doi.org/10.1016/j.engstruct.2017.03.015
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/37426
dc.information.autorucEscuela de Ingeniería ; Llera Martin, Juan Carlos de la ; 0000-0002-9064-0938 ; 53086
dc.information.autorucEscuela de ingeniería ; Hube Ginestar, Matías Andrés ; 0000-0003-0371-9048 ; 10832
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final702
dc.pagina.inicio687
dc.revistaEngineering Structureses_ES
dc.rightsacceso restringido
dc.rightsacceso abierto
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.otherConstrucción asísmicaes_ES
dc.subject.otherEdificios de oficinas - Diseño y Construcción - Chileles_ES
dc.subject.otherIngeniería civiles_ES
dc.titleEpistemic uncertainty in the seismic response of RC free-plan buildingses_ES
dc.typeartículo
dc.volumenVol. 141
sipa.codpersvinculados53086
sipa.codpersvinculados10832
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