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Investigación de vangarda para o desenvolvemento sostible

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2025

Otero-Chans, Dolores; Suárez-Riestra, Félix; Martín-Gutiérrez, Emilio; Estévez-Cimadevila, Javier

Experimental and numerical analysis of a full-scale timber-concrete-composite beam from simply supported to frame-connected Journal Article

In: Engineering Structures, vol. 327, pp. 119624, 2025, ISSN: 0141-0296.

Abstract | Links | BibTeX | Etiquetas: Continuous beam-to-column connection, Continuous shear connection, Full-scale testing, Structural design, Timber-concrete composite frame

@article{otero-chans_experimental_2025,

title = {Experimental and numerical analysis of a full-scale timber-concrete-composite beam from simply supported to frame-connected},

author = {Dolores Otero-Chans and Félix Suárez-Riestra and Emilio Martín-Gutiérrez and Javier Estévez-Cimadevila},

url = {https://www.sciencedirect.com/science/article/pii/S0141029625000148},

doi = {10.1016/j.engstruct.2025.119624},

issn = {0141-0296},

year  = {2025},

date = {2025-03-01},

urldate = {2026-03-18},

journal = {Engineering Structures},

volume = {327},

pages = {119624},

abstract = {Numerous TCC (timber-concrete composite) systems have been proposed and studied in recent years. Most of the studies have focused on the behaviour of the timber-concrete shear connection and the flexural behaviour of floor elements. This paper presents the results of an experimental and numerical study comparing the behaviour of a simply supported (SS) beam and a beam connected in continuity to mixed TCC supports, named as frame-connected beam (FC). The objective of this study is to assess the potential benefits of using a semi-rigid beam-to-support connection in the overall design of the structure. Full-scale tests were carried out with 370 mm height and 600 mm width beams and 5.9 m span. The failure load of the SS beam was found to be equivalent to an uniformly distributed load of 97.8 kN/m. The maximum loads applied to the FC beam were 28 % higher, yet did not achieve failure because the loading device's limit was reached. The deflection of the simply supported beam was less than 1/335 of the span for a load of 36 kN/m, reducing to 1/776 in the frame-connected specimen. A three-dimensional finite element model has been validated and calibrated from the test results. This model has been used to evaluate the moment redistribution in the frame-connected beam which, in the case studied, allows the maximum stresses in the timber members to be reduced by up to 49 %.},

keywords = {Continuous beam-to-column connection, Continuous shear connection, Full-scale testing, Structural design, Timber-concrete composite frame},

pubstate = {published},

tppubtype = {article}

}