Experimental evidence for effective flexural-only stiffnesses to account for nonlinear flexural-slip behaviour of timber-concrete composite sections

W.M. Sebastian, O.G.A. Bell, C. Martins, A.M.P.G. Dias

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

Abstract The nonlinear behaviours of timber-concrete composite (TCC) members can be predicted via linear beam element analyses. The key is to quantify effective flexural-only stiffnesses (B) that capture the material nonlinearities from flexure-slip action of the TCC section, and to conduct the analyses using B profiles which satisfy equilibrium, compatibility and nonlinear constitutive links to the connections. This paper demonstrates the manner in which ad-hoc of a TCC specimen can underpin validation of that concept. The test-based nonlinear B profiles along the span are found to out-perform the Gamma method (which assumes uniform B) in load response prediction. Finally, future research to broaden this approach is outlined.
Original languageEnglish
Pages (from-to)481-496
Number of pages16
JournalConstruction and Building Materials
Volume149
DOIs
Publication statusPublished - 15 Sep 2017

Keywords

  • Timber-concrete composites
  • Effective flexural-only stiffness
  • Nonlinear analysis

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