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October 15, 2025Structural ConcreteOpen Access

Assessment of shear reinforcement enhancement on the punching shear capacity of flat concrete slabs with openings

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Authors

JVJeovan Pereira das VirgensUniversidade Federal de GoiásRRRicardo de Paula RandiUniversidade Estadual de Campinas (UNICAMP)MMMarília Gonçalves MarquesUniversidade Federal de Viçosa

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Implication

Experimental assessment reveals shear reinforcement's limited benefit in overcoming punching shear issues in flat slabs.

Key Points

  • Findings indicate that openings near columns significantly weaken the punching shear capacity of flat slabs.
  • In scenarios tested, shear reinforcement did not adequately compensate for strength reduction due to openings.
  • The presence of circular openings adversely impacts slab performance, particularly when positioned close to columns.
  • Increasing the number of openings has minimal effect on overall slab strength in the observed conditions.

Cite This Study

Virgens et al. (2025) studied this question.

synapsesocial.com/papers/68f01110f081da0584b56742https://doi.org/10.1002/suco.70362
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Reinforced concrete flat slabs with openings at different distances from the column2020 · 19 citations
  2. 2Punching Shear Strength of Reinforced Concrete Slabs without Transverse Reinforcement2008 · 619 citations
  3. 3Punching Shear Strength of Slabs with Openings and Supported on Rectangular Columns2004 · 102 citations
  4. 4Effect of opening size and location on punching shear behaviour of two-way RC slabs2014 · 62 citations