Punching shear tests of normal- and high-strength concrete flat plates

Ozden ., Ersoy U., Ozturan T.

Canadian Journal of Civil Engineering, vol.33, no.11, pp.1389-1400, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 11
  • Publication Date: 2006
  • Doi Number: 10.1139/l06-089
  • Journal Name: Canadian Journal of Civil Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1389-1400
  • Keywords: reinforced concrete, flat plate, punching shear, strength, high-strength concrete, eccentric loading, slab reinforcement ratio, steel fiber reinforced concrete
  • Erzincan Binali Yildirim University Affiliated: No


Experimental research was conducted to investigate the punching shear performance of flat plates. A large number of slab specimens of normal- and high-strength concrete were tested under concentric and eccentric loads. The effects of flexural reinforcement and the use of steel fiber reinforcement were investigated. Experimental expressions were developed for the computation of residual slab strength. Experimentally observed punching shear capacities were compared with those from the provisions of Canadian Standards Association (CSA) standard CSA-A23.3-04. The results indicate that concrete strength plays an important role in punching capacity and slab rigidity. Slabs with a higher percentage of flexural reinforcement show an increase in punching capacity. The use of steel fibers results in improved strength and stiffness while also enhancing the postpeak deformability and residual strength. The empirical expressions developed provide reasonably good predictions of residual slab capacities. CSA-A23.3-04 expressions result in conservative punching shear capacity predictions for concentrically loaded slabs and provide good agreement with the experimentally observed punching shear capacities for eccentrically loaded slabs. © 2006 NRC Canada.