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Realistic modelling of irregular slabs under extreme loading

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Title: Realistic modelling of irregular slabs under extreme loading
Authors: Grosman, S
Izzuddin, B
Item Type: Journal Article
Abstract: This paper presents a new triangular flat shell element for reinforced concrete slabs of complex planar configuration subjected to extreme loading. The element is developed within a co-rotational framework, and it incorporates the effects of geometric as well as material non-linearities. To improve the approximation of the solution, additional hierarchic parameters are introduced within the local system of the element. The element formulation allows for composite action between different layers under the assumption of perfect bond between the slab concrete material, the reinforcement layers and the steel deck for composite slabs. To account for floor slabs of irregular geometric configurations, due allowance is made for uniaxial reinforcement to be oriented arbitrarily within the slab plane. The paper briefly describes the element formulation followed by several numerical verification examples. The applicability of the element to modelling concrete slabs is demonstrated using several validation studies against existing experimental results. The versatility of the element is further exemplified with a realistic large-scale floor slab model subjected to extreme loading scenarios. It is shown that the developed element provides a good balance between accuracy and efficiency in the modelling of irregular floor slabs subject to extreme loading conditions.
Issue Date: 14-Nov-2018
Date of Acceptance: 26-Jul-2018
URI: http://hdl.handle.net/10044/1/63973
DOI: https://dx.doi.org/10.1680/jencm.18.00020
ISSN: 1755-0777
Publisher: Thomas Telford
Start Page: 49
End Page: 64
Journal / Book Title: Proceedings of the ICE - Engineering and Computational Mechanics
Volume: 171
Issue: 2
Copyright Statement: © ICE Publishing, all rights reserved. Original article available at https://www.icevirtuallibrary.com/doi/10.1680/jencm.18.00020. Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.
Keywords: Science & Technology
Technology
Engineering, Civil
Engineering
computational mechanics
concrete structures
mathematical modelling
REINFORCED-CONCRETE SLABS
SHELL ELEMENT
PROGRESSIVE COLLAPSE
NONLINEAR-ANALYSIS
PERFORMANCE
BUILDINGS
0905 Civil Engineering
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status: Published
Online Publication Date: 2018-09-21
Appears in Collections:Civil and Environmental Engineering
Faculty of Engineering