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A Fibre-Based Frame Element with Explicit Consideration of Bond-Slip Effects

2017-01-09Conference object Open access
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dc.contributor.authorSousa, Romain
dc.contributor.authorCorreia, António A.
dc.contributor.authorAlmeida, João P.
dc.contributor.authorPinho, Rui
dc.date.accessioned2020-02-19T16:23:32Z
dc.date.available2020-02-19T16:23:32Z
dc.date.issued2017-01-09
dc.date.updated2020-02-19T11:29:20Z
dc.description.abstractReinforced concrete (RC) frames subjected to seismic loading often depict localized member-end deformations due to strain penetration effects between adjacent members, such as beam-column and column-footing joints. Past experimental programs indicate that the bond-slip deformations occurring at the interface between the reinforcement and the surrounding concrete can contribute up to 40% of the lateral deformation of the RC members. The employment of advanced bond-slip models within detailed finite element formulations, capable of simulating continuous domains with highly discretized meshes, has witnessed great advances over the recent years with encouraging results. Nonetheless, this modelling approach is computationally heavy and hence inapplicable for practical seismic (nonlinear) analysis of structures. Alternatively, the use of beam-column elements with lumped or distributed plasticity is a more computationally efficient and engineering-friendly modelling approach. Unfortunately, the elements of this type available in conventional numerical packages did not yet consider an explicit simulation of the interface between the reinforcing bars and the surrounding concrete along their embedment length. The present study aimed at overcoming the foregoing limitation by developing an explicit bond-slip model applicable to general fibre-based beam-column elements. Using a state-of-the-art bond-slip constitutive model, the current paper introduces a zero-length element that computes the localized member-end deformations accounting for the bond-slip response at each reinforcing bar of a given RC section. Along with the material properties and anchorage conditions, the proposed nonlinear model also accounts for cyclic degradation and rebar yielding effects. Validation studies conducted with the proposed numerical formulation reveal a good agreement with past experimental tests, evidencing an important stability and accuracy at the expense of an acceptable additional computational effort.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.slugcv-prod-1087734
dc.identifier.urihttp://hdl.handle.net/10400.8/4691
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.subjectBond-slippt_PT
dc.subjectReinforced concretept_PT
dc.subjectFramept_PT
dc.subjectNonlinear analysispt_PT
dc.titleA Fibre-Based Frame Element with Explicit Consideration of Bond-Slip Effectspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceSantiago, Chilept_PT
oaire.citation.titleWorld Conference on Earthquake Engineeringpt_PT
person.familyNameSousa
person.givenNameRomain
person.identifier1257123
person.identifier.ciencia-idB51F-077A-89DB
person.identifier.orcid0000-0003-1213-8376
person.identifier.scopus-author-id53867134400
rcaap.cv.cienciaidB51F-077A-89DB | Romain Ribeiro de Sousa
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationef762f92-201d-4335-8c9c-487c706fbfd8
relation.isAuthorOfPublication.latestForDiscoveryef762f92-201d-4335-8c9c-487c706fbfd8

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