Shear resistance of PHC slabs supported on beams

II: Analysis

Matti Pajari

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Abstract

A simple calculation model is proposed for prediction of the shear resistance of prestressed hollow-core (PHC) slabs supported on beams.
A simplified principal stress criterion for the web shear failure is introduced. The criterion is based on three stress components. The vertical shear stress τzy and the axial stress σy are calculated as for slabs supported on nonflexible bearings. The transverse shear stress τzx is calculated applying beam theory to a composite beam comprising the beam, joint concrete, a section of the slabs, and the optional topping.
The width of the section is an experimental parameter that takes into account the degree of composite interaction between the slabs and the beam. It is assumed to be proportional to the span of the beam.
Also presented are the modifications needed when the beams are continuous, the floor is covered with reinforced concrete topping, or the ends of the hollow cores are filled with concrete.
Original languageEnglish
Pages (from-to)1062-1073
JournalJournal of Structural Engineering
Volume124
Issue number9
DOIs
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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Shear stress
Bearings (structural)
Concretes
Composite materials
Reinforced concrete

Cite this

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abstract = "A simple calculation model is proposed for prediction of the shear resistance of prestressed hollow-core (PHC) slabs supported on beams. A simplified principal stress criterion for the web shear failure is introduced. The criterion is based on three stress components. The vertical shear stress τzy and the axial stress σy are calculated as for slabs supported on nonflexible bearings. The transverse shear stress τzx is calculated applying beam theory to a composite beam comprising the beam, joint concrete, a section of the slabs, and the optional topping. The width of the section is an experimental parameter that takes into account the degree of composite interaction between the slabs and the beam. It is assumed to be proportional to the span of the beam. Also presented are the modifications needed when the beams are continuous, the floor is covered with reinforced concrete topping, or the ends of the hollow cores are filled with concrete.",
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Shear resistance of PHC slabs supported on beams : II: Analysis. / Pajari, Matti.

In: Journal of Structural Engineering, Vol. 124, No. 9, 1998, p. 1062-1073.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Shear resistance of PHC slabs supported on beams

T2 - II: Analysis

AU - Pajari, Matti

PY - 1998

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N2 - A simple calculation model is proposed for prediction of the shear resistance of prestressed hollow-core (PHC) slabs supported on beams. A simplified principal stress criterion for the web shear failure is introduced. The criterion is based on three stress components. The vertical shear stress τzy and the axial stress σy are calculated as for slabs supported on nonflexible bearings. The transverse shear stress τzx is calculated applying beam theory to a composite beam comprising the beam, joint concrete, a section of the slabs, and the optional topping. The width of the section is an experimental parameter that takes into account the degree of composite interaction between the slabs and the beam. It is assumed to be proportional to the span of the beam. Also presented are the modifications needed when the beams are continuous, the floor is covered with reinforced concrete topping, or the ends of the hollow cores are filled with concrete.

AB - A simple calculation model is proposed for prediction of the shear resistance of prestressed hollow-core (PHC) slabs supported on beams. A simplified principal stress criterion for the web shear failure is introduced. The criterion is based on three stress components. The vertical shear stress τzy and the axial stress σy are calculated as for slabs supported on nonflexible bearings. The transverse shear stress τzx is calculated applying beam theory to a composite beam comprising the beam, joint concrete, a section of the slabs, and the optional topping. The width of the section is an experimental parameter that takes into account the degree of composite interaction between the slabs and the beam. It is assumed to be proportional to the span of the beam. Also presented are the modifications needed when the beams are continuous, the floor is covered with reinforced concrete topping, or the ends of the hollow cores are filled with concrete.

U2 - 10.1061/(ASCE)0733-9445(1998)124:9(1062)

DO - 10.1061/(ASCE)0733-9445(1998)124:9(1062)

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JO - Journal of Structural Engineering

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