Shear capacity of hybrid composite-concrete beams: A theoretical approach

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4 Citations (Scopus)


Elaborated formulas to calculate the shear resistance for hybrid composite-concrete beams do not exist.
This paper returns to the basic principles of shear transfer in steel reinforced concrete beams and modifies
these formulas into predictive calculations for the theoretical shear capacity of hybrid compositeconcrete
beams. These calculations are based on the theoretical shear mechanisms – uncracked concrete
zone, aggregate interlock and dowel action. For the investigated hybrid beams, approximately half of the
shear force is taken by the uncracked concrete zone and aggregate interlock of the concrete and the
remaining half by dowel action. This theoretical approach is validated by the experimental shear failure
of eight hybrid beams with four different cross-sections. The calculation method clearly quantifies the
differences in shear behaviour of the investigated beam cross-sections and approaches the ultimate shear
capacity of all beam types relatively well, which proves this a valuable approach also for other hybrid
beam types.
Original languageEnglish
Pages (from-to)592
Number of pages8
JournalComposite Structures
Publication statusPublished - 24 May 2016


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