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Article: A unified shear stress limit for reinforced concrete beam design

TitleA unified shear stress limit for reinforced concrete beam design
Authors
Issue Date2015
PublisherTaylor & Francis for Hong Kong Institution of Engineers. The Journal's web site is located at http://www.tandfonline.com/loi/thie20
Citation
HKIE Transactions, 2015, v. 22 n. 4, p. 223-234 How to Cite?
AbstractNine asymmetrically spanned reinforced concrete deep beams were designed and tested to unreinforced web crushing failure in this experimental study to establish the appropriate shear stress limit for beam design. The lower bound and mean shear design limits associated with the concrete strut crushing in the web of the beam are identified, based on the better correlated concrete compressive strength parameter rather than its square root. A unified shear stress limit model is proposed to anchor the maximum strut crushing limit and sectional shear stress in design codes via a generic shear enhancement factor. The proposed unified model exhibits modest conservatism compared to the Hong Kong Code of Practice for Structural Concrete 2013 and the Chinese Code for Design of Concrete Structures (GB 50010). Transfer beams, pile caps and corbels, which are typically accompanied by high shear demand, can be optimised in size to leverage construction material cost savings through the more relaxed shear stress limit proposed in this study, which is justified through experiments.
Persistent Identifierhttp://hdl.handle.net/10722/229138
ISSN
2015 SCImago Journal Rankings: 0.145

 

DC FieldValueLanguage
dc.contributor.authorLooi, DTW-
dc.contributor.authorSu, RKL-
dc.contributor.authorLam, ESS-
dc.date.accessioned2016-08-23T14:09:14Z-
dc.date.available2016-08-23T14:09:14Z-
dc.date.issued2015-
dc.identifier.citationHKIE Transactions, 2015, v. 22 n. 4, p. 223-234-
dc.identifier.issn1023-697X-
dc.identifier.urihttp://hdl.handle.net/10722/229138-
dc.description.abstractNine asymmetrically spanned reinforced concrete deep beams were designed and tested to unreinforced web crushing failure in this experimental study to establish the appropriate shear stress limit for beam design. The lower bound and mean shear design limits associated with the concrete strut crushing in the web of the beam are identified, based on the better correlated concrete compressive strength parameter rather than its square root. A unified shear stress limit model is proposed to anchor the maximum strut crushing limit and sectional shear stress in design codes via a generic shear enhancement factor. The proposed unified model exhibits modest conservatism compared to the Hong Kong Code of Practice for Structural Concrete 2013 and the Chinese Code for Design of Concrete Structures (GB 50010). Transfer beams, pile caps and corbels, which are typically accompanied by high shear demand, can be optimised in size to leverage construction material cost savings through the more relaxed shear stress limit proposed in this study, which is justified through experiments.-
dc.languageeng-
dc.publisherTaylor & Francis for Hong Kong Institution of Engineers. The Journal's web site is located at http://www.tandfonline.com/loi/thie20-
dc.relation.ispartofHKIE Transactions-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleA unified shear stress limit for reinforced concrete beam design-
dc.typeArticle-
dc.identifier.emailSu, RKL: klsu@hkucc.hku.hk-
dc.identifier.authoritySu, RKL=rp00072-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1080/1023697X.2015.1102654-
dc.identifier.hkuros260513-
dc.identifier.volume22-
dc.identifier.issue4-
dc.identifier.spage223-
dc.identifier.epage234-
dc.publisher.placeUnited Kingdom-

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