Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/38262

TitleNumerical simulation of the punching shear behaviour of self-compacting fibre reinforced flat slabs
Author(s)Teixeira, Marcos D. E.
Barros, Joaquim A. O.
Cunha, Vitor M. C. F.
Moraes-Neto, B. N.
Gouveia, A. Ventura
KeywordsFlat slab
Punching
Steel fibre reinforced self-compacting concrete
FEM analysis
Issue date5-Feb-2015
PublisherElsevier
JournalConstruction and Building Materials
Abstract(s)This paper presents the numerical simulations of the punching behaviour of centrally loaded steel fibre reinforced self-compacting concrete (SFRSCC) flat slabs. Eight half scaled slabs reinforced with different content of hooked-end steel fibres (0, 60, 75 and 90 kg/m3) and concrete strengths of 50 and 70 MPa were tested and numerically modelled. Moreover, a total of 54 three-point bending tests were carried out to assess the post-cracking flexural tensile strength. All the slabs had a relatively high conventional flexural reinforcement in order to promote the occurrence of punching failure mode. Neither of the slabs had any type of specific shear reinforcement rather than the contribution of the steel fibres. The numerical simulations were performed according to the Reissner-Mindlin theory under the finite element method framework. Regarding the classic formulation of the Reissner-Mindlin theory, in order to simulate the progressive damage induced by cracking, the shell element is discretized into layers, being assumed a plane stress state in each layer. The numerical results are, then, compared with the experimental ones and it is possible to notice that they accurately predict the experimental force-deflection relationship. The type of failure observed experimentally was also predicted in the numerical simulations.
TypeArticle
URIhttp://hdl.handle.net/1822/38262
DOI10.1016/j.conbuildmat.2014.10.003
ISSN0950-0618
Peer-Reviewedyes
AccessOpen access
Appears in Collections:ISISE - Artigos em Revistas Internacionais

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