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Investigación de vangarda para o desenvolvemento sostible

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2026

Suárez-Riestra, Félix; Martín-Gutiérrez, Emilio; Otero-Chans, Dolores; Vázquez-Rodríguez, Pepe

Experimental investigation and proposal of a simplified analytical approach for the evaluation of the long-term behaviour of TCC beams (floors) Journal Article

In: Journal of Building Engineering, vol. 127, pp. 116363, 2026, ISSN: 2352-7102.

Abstract | Links | BibTeX | Etiquetas: Cyclical, Environmental, Long-term, Timber-concrete, Time

@article{suarez-riestra_experimental_2026,

title = {Experimental investigation and proposal of a simplified analytical approach for the evaluation of the long-term behaviour of TCC beams (floors)},

author = {Félix Suárez-Riestra and Emilio Martín-Gutiérrez and Dolores Otero-Chans and Pepe Vázquez-Rodríguez},

url = {https://www.sciencedirect.com/science/article/pii/S2352710226011848},

doi = {10.1016/j.jobe.2026.116363},

issn = {2352-7102},

year  = {2026},

date = {2026-06-01},

urldate = {2026-08-18},

journal = {Journal of Building Engineering},

volume = {127},

pages = {116363},

abstract = {A new methodology is proposed for analysing the long-term behaviour of composite timber-concrete composite beams (TCC) exposed to changing and cyclical environmental conditions. Conventional predictive methodologies are typically developed based on the evaluation of changes in the properties of constituents (timber, concrete and connection media) over time. They are unable to adequately define fluctuations due to environmental changes. Based on the instantaneous deflection resulting from the loading process, the analytical proposal enables the establishment of a deflection timeline, taking into account the humidity (RH) and temperature (T) conditions at each instant. The proposal is applied to specimens with different span to depth ratio, in lengths of 6.0, 7.2 and 8.4 m, exposed to an uncontrolled environment and continuous loading for a period of 1000 days. Relative humidity and ambient temperature controls were carried out continuously and, at the same time, direct moisture contents in timber were determined. In this way, the measured deformations are correlated with the evolution of environmental conditions and the effect on the materials. The proposal developed is capable of reflecting the relationship between these changing environmental conditions, their cyclical nature and the oscillation in the value of the deformation characteristic of these climatic exposures. The accuracy of the analytical proposal allows its predictive nature to be established based on the differences obtained in relation to the measurement taken, with variations at 1000 days ranging from −0.73 mm (−4.42%) to +0.29 mm (+1.62%).},

keywords = {Cyclical, Environmental, Long-term, Timber-concrete, Time},

pubstate = {published},

tppubtype = {article}

}