Effect of the Shear Reinforcement Type on the Punching Resistance of Concrete Slabs

Authors: Kálmán Koris, András Kozma, István Bódi

ABSTRACT
Punching shear failure of flat concrete slabs is a complex phenomenon with brittle failure mode, meaning sudden structural failure and rapid decrease of load carrying capacity. Due to these reasons, the application of appropriate punching shear reinforcement in the slabs could be essential. To obtain the required structural strength and performance in slab-column junctions, the effect of the shear reinforcement type on the punching resistance must be known. For this purpose, numerous nonlinear finite element simulations were carried out to determine the behavior and punching shear strength of flat concrete slabs with different punching shear reinforcement types. The efficiency of different reinforcement types was also determined and compared. Accuracy of the numerical simulations was verified by experimental results. Based on the comparison of numerical results, the partial factor for the design formula used in Eurocode 2 was calculated and was found to be higher than the actual one.

Source:

Journal: Open Journal of Civil Engineering
DOI: 10.4236/ojce.2018.81001 (PDF)
Paper Id: 82858

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