Modal frequencies of a reinforced timber-concrete composite Floor

testing and modeling

Pedro Gil Girão Dos Santos, Carlos Eduardo De Jesus Martins, Jonathan Skinner, Richard Harris, Alfredo Manuel Pereira Geraldes Dias, Luís Manuel Cortesão Godinho

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The reinforcement of a timber floor with a concrete layer properly connected to produce a composite system represents not only an improvement in the stiffness but also a foreseeable change in the modal frequencies of the floor. In order to assess that change, a typical timber floor, which was subsequently reinforced with a concrete layer to produce a composite, was tested at both stages in the research reported in this paper. Additionally, composite beams taken from the original floor were also tested. The results showed a significant decrease (44%) in the fundamental frequency after the reinforcement. In order to obtain the mode shapes and frequencies of the floor, finite-element (FE) models of the floors and beams were created. The FE models accurately matched the experimental results. Having validated the model, a parametric study was carried out to compare the results provided by the proposed FE model with a numerical model from the bibliography and to understand the influence of the most relevant structural parameters on the fundamental frequency of the composite floor.


Original languageEnglish
Article number04015029
Pages (from-to)1-11
Number of pages11
JournalJournal of Structural Engineering
Volume141
Issue number11
Early online date19 Feb 2015
DOIs
Publication statusPublished - 30 Nov 2015

Fingerprint

Timber
Concretes
Composite materials
Testing
Reinforcement
Bibliographies
Large scale systems
Numerical models
Stiffness

Keywords

  • Wood structures

Cite this

Santos, P. G. G. D., Martins, C. E. D. J., Skinner, J., Harris, R., Dias, A. M. P. G., & Godinho, L. M. C. (2015). Modal frequencies of a reinforced timber-concrete composite Floor: testing and modeling. Journal of Structural Engineering, 141(11), 1-11. [04015029]. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001275

Modal frequencies of a reinforced timber-concrete composite Floor : testing and modeling. / Santos, Pedro Gil Girão Dos; Martins, Carlos Eduardo De Jesus; Skinner, Jonathan; Harris, Richard; Dias, Alfredo Manuel Pereira Geraldes; Godinho, Luís Manuel Cortesão.

In: Journal of Structural Engineering, Vol. 141, No. 11, 04015029, 30.11.2015, p. 1-11.

Research output: Contribution to journalArticle

Santos, PGGD, Martins, CEDJ, Skinner, J, Harris, R, Dias, AMPG & Godinho, LMC 2015, 'Modal frequencies of a reinforced timber-concrete composite Floor: testing and modeling', Journal of Structural Engineering, vol. 141, no. 11, 04015029, pp. 1-11. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001275
Santos, Pedro Gil Girão Dos ; Martins, Carlos Eduardo De Jesus ; Skinner, Jonathan ; Harris, Richard ; Dias, Alfredo Manuel Pereira Geraldes ; Godinho, Luís Manuel Cortesão. / Modal frequencies of a reinforced timber-concrete composite Floor : testing and modeling. In: Journal of Structural Engineering. 2015 ; Vol. 141, No. 11. pp. 1-11.
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