Flexural performance of full-scale two-span Nail-Laminated Timber Concrete composite slabs

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dc.contributor.authorAdema, Andres
dc.contributor.authorChacon, Matias F.
dc.contributor.authorSanta Maria, Hernan
dc.contributor.authorOpazo-Vega, Alexander
dc.contributor.authorCasanova, Euro
dc.contributor.authorGuindos, Pablo
dc.date.accessioned2025-01-20T16:10:26Z
dc.date.available2025-01-20T16:10:26Z
dc.date.issued2024
dc.description.abstractThis study examines the flexural performance of six 9-m full-scale two-span Nail-Laminated Timber Concrete (NLTC) composite slabs. 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. The multi-span configuration of slabs reduces their deflections simply and effectively. Fivepoint monotonic bending tests were considered for all slabs. Before full-scale slabs, compressive and tensile pullout tests of Timber-Concrete Composite (TCC) shear connections were performed, including notches and inclined screws. Tensile pull-out tests of shear connections were also included to emulate the negative bending moments that occur in the middle of the slabs. 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 at the serviceability range. Moreover, an analytical elastic TCC beam with the Girhammar method was assessed and demonstrated as more precise than the traditional gamma-method. Finally, an accurate prediction of the numerical and analytical (Girhammar) models for the bending stiffness at service loads up to 30% of capacity is observed, with errors in a range of 2-23% and 9-74%, respectively.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.conbuildmat.2024.136528
dc.identifier.eissn1879-0526
dc.identifier.issn0950-0618
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.136528
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90212
dc.identifier.wosidWOS:001292505300001
dc.language.isoen
dc.revistaConstruction and building materials
dc.rightsacceso restringido
dc.subjectTimber-concrete composite
dc.subjectNail-laminated timber
dc.subjectFlexural performance
dc.subjectHybrid timber-concrete building
dc.subjectNotched and screwed connections
dc.subjectPull-out tests
dc.subjectFive-point bending tests
dc.subjectMulti-span tests
dc.titleFlexural performance of full-scale two-span Nail-Laminated Timber Concrete composite slabs
dc.typeartículo
dc.volumen432
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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