Design considerations on the influence of slab continuity on punching resistance of flat slabs
File(s)1983-4195-riem-13-6-e13615.pdf (2.99 MB)
Published version
Author(s)
Oliveira, FGBS
Soares, LFS
Vollum, RL
Type
Journal Article
Abstract
This paper assesses the influence of slab continuity on the punching resistance of a realistically
proportioned flat slab floor plate without shear reinforcement. The edge column punching resistance of
a symmetric flat slab extending bays in each direction was assessed by means of NLFEA with TNO
DIANA, MC2010 levels II, III, IV, Eurocode 2 and NBR 6118. Both Eurocode 2 and NBR 6118 are
seen to give similar predictions for punching resistance, while MC2010, which is based on the Critical
Shear Crack Theory and depends on how rotations are calculated and FE modelling assumptions, varies
significantly with its levels of approximation with Level IV agreeing reasonably well with predictions
from NLFEA. Direction for the critical rotations is shown to vary and can also be influenced by the
reinforcement over the span. For EC2, NBR 6118 and MC2010 LoA II and III punching shear design
are independent of span, unlike the results obtained with MC2010 LoA IV.
proportioned flat slab floor plate without shear reinforcement. The edge column punching resistance of
a symmetric flat slab extending bays in each direction was assessed by means of NLFEA with TNO
DIANA, MC2010 levels II, III, IV, Eurocode 2 and NBR 6118. Both Eurocode 2 and NBR 6118 are
seen to give similar predictions for punching resistance, while MC2010, which is based on the Critical
Shear Crack Theory and depends on how rotations are calculated and FE modelling assumptions, varies
significantly with its levels of approximation with Level IV agreeing reasonably well with predictions
from NLFEA. Direction for the critical rotations is shown to vary and can also be influenced by the
reinforcement over the span. For EC2, NBR 6118 and MC2010 LoA II and III punching shear design
are independent of span, unlike the results obtained with MC2010 LoA IV.
Date Issued
2020-10-21
Date Acceptance
2020-05-12
Citation
IBRACON Structures and Materials Journal, 2020, 13 (6), pp.1-20
ISSN
1983-4195
Publisher
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000600203&tlng=en
Start Page
1
End Page
20
Journal / Book Title
IBRACON Structures and Materials Journal
Volume
13
Issue
6
Copyright Statement
© 2020 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited https://creativecommons.org/licenses/by/4.0/.
Identifier
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952020000600203&tlng=en
Publication Status
Published
Date Publish Online
2020-10-21