Model error and reliability of reinforced concrete beams in shear designed according to the Modified Compression Field Theory

Agarwal, A; Foster, SJ; Stewart, MG

Model error and reliability of reinforced concrete beams in shear designed according to the Modified Compression Field Theory

Agarwal, A Foster, SJ Stewart, MG

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: Structural Concrete, 2021, 22, (6), pp. 3711-3726
Issue Date:: 2021-12-01

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Field	Value	Language
dc.contributor.author	Agarwal, A
dc.contributor.author	Foster, SJ
dc.contributor.author	Stewart, MG
dc.date.accessioned	2022-08-06T09:53:44Z
dc.date.available	2022-08-06T09:53:44Z
dc.date.issued	2021-12-01
dc.identifier.citation	Structural Concrete, 2021, 22, (6), pp. 3711-3726
dc.identifier.issn	1464-4177
dc.identifier.issn	1751-7648
dc.identifier.uri	http://hdl.handle.net/10453/159712
dc.description.abstract	Model error (or model uncertainty) were probabilistically characterized for modified compression field theory (MCFT) Simplified and General Method approaches using experimental databases that contained reinforced concrete (RC) beams having shear failures with and without stirrups (168 and 368 specimens, respectively). It was found that when compared to the design shear model currently used in ACI-318, the General Method produced low model error variability indicating better consistency for the determination of shear strength. Structural reliabilities were then calculated for RC beams in shear designed to MCFT General Method (AASHTO LRFD, CSA A23.3-14, AS3600-2018) for a live-to-dead load ratio between 0 and 5, and for capacity reduction factor ϕ = 0.70, 0.75, and 0.80. It was concluded that the ϕ-factor for shear failure for Australian standards can be increased from 0.70 to 0.75 for RC beams with stirrups, providing a 7.1% increase in the design shear capacity and contributing to sustainable design and reduction in greenhouse gas emissions due to more efficient usage of materials.
dc.language	en
dc.publisher	Wiley
dc.relation.ispartof	Structural Concrete
dc.relation.isbasedon	10.1002/suco.202100319
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Civil Engineering
dc.title	Model error and reliability of reinforced concrete beams in shear designed according to the Modified Compression Field Theory
dc.type	Journal Article
utslib.citation.volume	22
utslib.for	0905 Civil Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-08-06T09:53:38Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	22
utslib.citation.issue	6

Abstract:

Model error (or model uncertainty) were probabilistically characterized for modified compression field theory (MCFT) Simplified and General Method approaches using experimental databases that contained reinforced concrete (RC) beams having shear failures with and without stirrups (168 and 368 specimens, respectively). It was found that when compared to the design shear model currently used in ACI-318, the General Method produced low model error variability indicating better consistency for the determination of shear strength. Structural reliabilities were then calculated for RC beams in shear designed to MCFT General Method (AASHTO LRFD, CSA A23.3-14, AS3600-2018) for a live-to-dead load ratio between 0 and 5, and for capacity reduction factor ϕ = 0.70, 0.75, and 0.80. It was concluded that the ϕ-factor for shear failure for Australian standards can be increased from 0.70 to 0.75 for RC beams with stirrups, providing a 7.1% increase in the design shear capacity and contributing to sustainable design and reduction in greenhouse gas emissions due to more efficient usage of materials.

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http://hdl.handle.net/10453/159712