Hot-rolled steel and steel-concrete composite design incorporating strain hardening

Title: Hot-rolled steel and steel-concrete composite design incorporating strain hardening
Authors: Gardner, L
Yun, X
Macorini, L
Kucukler, M
Item Type: Journal Article
Abstract: Current design codes for steel and steel-concrete composite structures are based on elastic, perfectly plastic material behaviour and can lead to overly conservative strength predictions due to the neglect of the beneficial influence of strain hardening, particularly in the case of stocky, bare steel cross-sections and composite beams under sagging bending moments. The Continuous Strength Method (CSM) is a deformation based design method that enables material strain hardening properties to be exploited, thus resulting in more accurate capacity predictions. In this paper, a strain hardening material model, which can closely represent the stress-strain response of hot-rolled steel, is introduced and incorporated into the CSM design framework. The CSM cross-section resistance functions, incorporating strain hardening, are derived for hot-rolled steel sections in compression and bending, as well as hot-rolled steel-concrete composite sections where their neutral axes lie within the concrete slab in bending. Comparisons of the capacity predictions with a range of experimental data from the literature and finite element data generated herein demonstrate the applicability and benefits of the proposed approach.
Issue Date: 8-Aug-2016
Date of Acceptance: 7-Aug-2016
URI: http://hdl.handle.net/10044/1/39716
DOI: https://dx.doi.org/10.1016/j.istruc.2016.08.005
ISSN: 2352-0124
Publisher: Elsevier
Start Page: 21
End Page: 28
Journal / Book Title: Structures
Volume: 9
Copyright Statement: © 2016 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Engineering, Civil
Engineering
Composite beams
Continuous strength method
Deformation based design
Hot-rolled steel
Steel structures
HIGH-STRENGTH STEEL
RECTANGULAR HOLLOW SECTIONS
ULTIMATE BEHAVIOR
FLEXURAL BEHAVIOR
BENDING STRENGTH
BEAMS
SLENDERNESS
CONNECTION
RESTRAINTS
CAPACITY
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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