Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1015304
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dc.contributor.authorPereira, R.pt_BR
dc.contributor.authorBatista, A. L.pt_BR
dc.contributor.authorNeves, L.pt_BR
dc.contributor.authorLemos, J. V.pt_BR
dc.date.accessioned2022-10-12T09:43:22Zpt_BR
dc.date.accessioned2022-11-04T11:25:28Z-
dc.date.available2022-10-12T09:43:22Zpt_BR
dc.date.available2022-11-04T11:25:28Z-
dc.date.issued2022-04pt_BR
dc.identifier.other10.1016/j.istruc.2022.02.049pt_BR
dc.identifier.urihttps://repositorio.lnec.pt/jspui/handle/123456789/1015304-
dc.description.abstractConcrete gravity dams are mass concrete structures, often built on rock mass foundations, conceived to rely upon their weight for stability. To prevent sliding, these structures are usually keyed/embedded into the foundation, a good construction practice particularly relevant in medium to high intensity seismic zones. In stability analysis, the extra strength obtained by keying the dam into the foundation is usually either neglected or taken as a passive resistance, which, such as explored in this paper, do not reflect the real structural response in pre-collapse situations. Limit state philosophy requires the ultimate equilibrium conditions to be expressed as accurately as possible. In this paper, the rigid-body equilibrium of a wedgy model representing the dam and a downstream rock wedge is analyzed according to the large displacement regime. Failure mechanisms were identified, analytically described and numerically validated. Application to two Portuguese large concrete gravity dams led to safety factors considerably larger than those computed assuming the usual practice. The proposed approach is intended to support probabilistic and/or semi-probabilistic methodologies for safety assessment of concrete gravity dams, in the design and feasibility phases, in which the limit state approach is inherently followed.pt_BR
dc.language.isoengpt_BR
dc.publisherElsevierpt_BR
dc.rightsopenAccesspt_BR
dc.subjectConcrete gravity damspt_BR
dc.subjectKeyed profilespt_BR
dc.subjectStability analysispt_BR
dc.subjectAnalytical modelingpt_BR
dc.subjectLimit state approachpt_BR
dc.subjectUltimate equilibriumpt_BR
dc.subjectLarge displacement analysispt_BR
dc.titleDeduction of ultimate equilibrium limit states for concrete gravity dams keyed into rock mass foundations based on large displacement analysispt_BR
dc.typearticlept_BR
dc.description.volume38pt_BR
dc.description.sectorDBB/CHEFIApt_BR
dc.description.magazineStructurespt_BR
dc.contributor.peer-reviewedSIMpt_BR
dc.contributor.academicresearchersSIMpt_BR
dc.contributor.arquivoSIMpt_BR
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