Analytical, experimental and numerical study of timber-concrete composite beams for bridges

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dc.contributor.authorMolina, Julio C. [UNESP]
dc.contributor.authorJunior, Carlito Calil
dc.contributor.authorDe Oliveira, Diego R.
dc.contributor.authorGomes, Nádia B. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionOregon State University
dc.date.accessioned2019-10-06T15:55:22Z
dc.date.available2019-10-06T15:55:22Z
dc.date.issued2019-01-01
dc.description.abstractIn this study, the strength and stiffness (EI) of wood-concrete composite beams for bridges with T-shaped cross section were evaluated. Two types of connectors were used: connectors bonded with epoxy adhesive and connectors attached to the wood just by pre-drilling (without adhesive). The connectors consisted of common steel bars with a diameter of 12.5 mm. Initially, the strength and stiffness (EI) of the beams were analyzed by bending tests with the load applied at the third point of the beam. Subsequently, the composite beams were evaluated by numerical simulation using ANSYS software with focus on the connection system. To make the composite beams, Eucalyptus citriodora wood and medium strength concrete were used. The slip modulus K and the ultimate strength values of each type of connector were obtained by direct shear tests performed on composite specimens. The results showed that the connector glued with epoxy adhesive resulted in better strength and stiffness (EI) for the composite beams when compared to the connector fixed by pre-drilling. The differences observed were up to 10%. The strength and stiffness (EI) values obtained analytically by Möhler’ model were lower than the values obtained experimentally from the bending tests, and the differences were up to 25%. The numerical simulations allowed, with reasonable approximation, the evaluation of stress distributions in the composite beams tested experimentally.en
dc.description.affiliationMechanical Engineering Department University of São Paulo State - UNESP, 333 Ariberto Pereira da Cunha
dc.description.affiliationDepartment of Structural Engineering São Carlos School of Engineering of the University of São Paulo, 400 Trabalhador São-carlense Street, Downtown
dc.description.affiliationWood Science and Engineering Department Oregon State University, 119 Richardson Hall
dc.description.affiliationUnespMechanical Engineering Department University of São Paulo State - UNESP, 333 Ariberto Pereira da Cunha
dc.format.extent103-115
dc.identifierhttp://dx.doi.org/10.12989/cac.2019.24.2.103
dc.identifier.citationComputers and Concrete, v. 24, n. 2, p. 103-115, 2019.
dc.identifier.doi10.12989/cac.2019.24.2.103
dc.identifier.issn1598-818X
dc.identifier.issn1598-8198
dc.identifier.scopus2-s2.0-85071698477
dc.identifier.urihttp://hdl.handle.net/11449/188038
dc.language.isoeng
dc.relation.ispartofComputers and Concrete
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAnalytical Möhler model
dc.subjectComposite beams
dc.subjectNumerical simulation
dc.subjectSteel bar connector
dc.subjectStiffness EI
dc.subjectStrength
dc.subjectTimber-concrete
dc.titleAnalytical, experimental and numerical study of timber-concrete composite beams for bridgesen
dc.typeArtigo

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