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dc.contributor.authorUlfberg, Adrian
dc.contributor.authorGonzalez-Libreros, Jaime
dc.contributor.authorDas, Oisik
dc.contributor.authorBista, Dipen
dc.contributor.authorWestberg Wilde, Marie
dc.contributor.authorJohansson, Fredrik
dc.contributor.authorSas, Gabriel
dc.date.accessioned2023-08-28T06:57:34Z
dc.date.available2023-08-28T06:57:34Z
dc.date.created2023-05-15T10:25:50Z
dc.date.issued2023
dc.identifier.citationArchives of Civil and Mechanical Engineering (ACME). 2023, 23 (2), .
dc.identifier.issn1644-9665
dc.identifier.urihttps://hdl.handle.net/11250/3085907
dc.description.abstractCommon analytical assessment methods for concrete dams are unlikely to predict material fracture in the dam body because of the assumption of rigid body behavior and uniform- or linear stress distribution along a predetermined failure surface. Hence, probabilistic non-linear finite element analysis, calibrated from scale model tests, was implemented in this study to investigate the impact of concrete material parameters (modulus of elasticity, tensile strength, compressive strength, fracture energy) on the ultimate capacity of scaled model dams. The investigated dam section has two types of large asperities, located near the downstream and/or upstream end of the rock–concrete interface. These large-scale asperities significantly increased the interface roughness. Post-processing of the numerical simulations showed interlocking between the buttress and the downstream asperity leading to fracture of the buttress with the capacity being determined mainly by the tensile strength of the buttress material. The capacity of a model with an asperity near the upstream side, with lower inclination, was less dependent on the material parameters of the buttress as failure occurred by sliding along the interface, even with inferior material parameters. Results of this study show that material parameters of the concrete in a dam body can govern the load capacity of the dam granted that significant geometrical variations in the rock–concrete interface exists. The material parameters of the dam body and their impact on the capacity with respect to the failure mechanism that developed for some of the studied models are not commonly considered to be decisive for the load capacity. Also, no analytical assessment method for this type of failure exists. This implies that common assessment methods may misjudge the capacity and important parameters for certain failure types that may develop in dams.
dc.language.isoeng
dc.subjectMaterial randomization
dc.subjectMaterial randomization
dc.subjectConcrete dams
dc.subjectConcrete dams
dc.subjectNumerical analysis
dc.subjectNumerical analysis
dc.subjectModel test
dc.subjectModel test
dc.titleProbabilistic finite element analysis of failures in concrete dams with large asperities in the rock–concrete interface
dc.title.alternativeProbabilistic finite element analysis of failures in concrete dams with large asperities in the rock–concrete interface
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersion
dc.subject.nsiVDP::Materialteknologi: 520
dc.subject.nsiVDP::Materials science and engineering: 520
dc.source.pagenumber17
dc.source.volume23
dc.source.journalArchives of Civil and Mechanical Engineering (ACME)
dc.source.issue2
dc.identifier.doi10.1007/s43452-023-00652-4
dc.identifier.cristin2147458
dc.relation.projectAndre: FORMAS, Grant No. 2019-01236
dc.relation.projectNorges forskningsråd: 244029
dc.relation.projectAndre: Swedish Hydropower Center (SVC). Grant VKU14169
dc.relation.projectAndre: Luleå University of Technology, Sweden
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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