Potential of continuous nail-laminated timber concrete composite slabs to cover large spans with timber

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dc.catalogadordfo
dc.contributor.authorAdema, A.
dc.contributor.authorChacón, M.F.
dc.contributor.authorMaría, H.S.
dc.contributor.authorOpazo, A.
dc.contributor.authorCasanova, E.
dc.contributor.authorGuindos Bretones, Pablo
dc.date.accessioned2025-10-22T14:49:01Z
dc.date.available2025-10-22T14:49:01Z
dc.date.issued2024
dc.description.abstractThis study examines the flexural performance of six 9-m full-scale Nail-Laminated Timber Concrete (NLTC) composite slabs with continuous Boundary Conditions (BC)s. The slabs were made with lumber beams edge-joined with double nailing, end-joined with butt joints, and the reinforced concrete topping connected with a set of notches, inclined screws, or a combination of both. This slab configuration provides large-span continuous BCs, reducing their deflections in a simple and effective way. Five-point monotonic bending tests were considered for all slabs. Before full-scale slabs, compressive and tensile pull-out tests of Timber-Concrete Composite (TCC) shear connections were performed, including notches and inclined screws. Tensile pull-out tests were added to assess whether the shear connectors had dissimilar behavior under the negative bending moments expected in these unconventional BCs. Failure modes, load–mid-span deflection relation, bending stiffness, and timber-concrete slip were evaluated for all slabs. A detailed 3D micro-Finite Element (FE) model of the shear connections was built in ANSYS software, whereas a macro-FE model of NLTC slabs was made in SAP2000, demonstrating a good fit for the timber-concrete interaction and the load-carrying capacity of the composite slab under these unconventional BCs at the serviceability range, respectively. Moreover, an analytical elastic beam with the Girhammar method for continuous TCC slabs was assessed and demonstrated as more precise than the traditional -method. Predictions of the numerical and analytical (Girhammar) models for the bending stiffness at service loads up to 30% of capacity showed errors up to 10% and 57%, respectively. This study demonstrates that achieving continuous boundary conditions may be an effective way for applying timber in modern large span applications.
dc.fuente.origenORCID
dc.identifier.doi10.2139/ssrn.4696695
dc.identifier.urihttps://doi.org/10.2139/ssrn.4696695
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/106321
dc.information.autorucEscuela de Ingeniería; Guindos Bretones Pablo; 0000-0001-7471-0281; 1051045
dc.language.isoen
dc.nota.accesoContenido parcial
dc.rightsAcceso restringido
dc.subjectTimber-concrete composite
dc.subjectBail-laminated timber
dc.subjectFlexural performance
dc.subjectHybrid timber-concrete building
dc.subjectPropped cantilevered slab
dc.subjectNotched and screwed connections
dc.subjectPull-out test
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titlePotential of continuous nail-laminated timber concrete composite slabs to cover large spans with timber
dc.typepreprint
sipa.codpersvinculados1051045
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