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doi:10.3850/978-981-08-7920-4_S2-A23-cd
Flexural Punching Shear Capacities of Steel Strengthened Slabs
Usama Ebead1 and Huda Saeed 2
1Civil and Environmental Engineering Department, United Arab Emirates University,
Al Ain, United Arab Emirates.
2Civil Engineering Department, Helwan University, Cairo, Egypt.
ABSTRACT
A numerical approach is developed here to evaluate the flexural and punching shear and
capacities of two-way reinforced concrete plates. Inclusively, the approach analyzes the unrehabilitated
two-way plates made of normal or high strength concrete. A special concrete
constitutive model of concrete is introduced that consider biaxial state of concrete in a twoway
plate as well as the confinement effect of steel plates for the rehabilitated slabs. The
constitutive model of concrete includes defining the concrete properties in tension including
pre cracking and post cracking properties of concrete. The theoretical approach is iterative
incremental in nature bywhich the deformation characteristics of a slab is evaluated at each load
increment until failure. A comparison between the suggested numerical approach and some of
the available data of rehabilitated and un-rehabilitated normal and high strength concrete twoway
plates shows a good agreement with respect to the deformational behaviour, the ultimate
capacity and the mode of failure.
Keywords: Strengthening, Reinforced concrete slabs, FRP, Steel plates, Confinement.
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