Abstract

BERMEO FAREZ, Carla; SANCHEZ ONATE, Diego  and  PLACENCIA ANDRADE, Patricio. Experimental Test of Slab – Column Connection on Frames with Hidden Beams. Rev Politéc. (Quito) [online]. 2020, vol.45, n.1, pp.17-24. ISSN 2477-8990.  https://doi.org/10.33333/rp.vol45n1.02.

Flat slabs with hidden beams are widely used in reinforced concrete construction in Ecuador because of their low cost, short construction time and architectural appearance. Hidden beams are referred to beams that are as high as the flat slab. This kind of flat slabs has a good performance for vertical loads, however, several structural collapses have been reported during seismic events. These failures are commonly referred to as “punching shear” failures as the column appears to punch through the slab as the latter drops away from the failure surface around the column. These failures appear suddenly; therefore it is necessary to prevent them. In this experiment, two full scale specimens were constructed. Two interior slab - column connections were tested under gravity and seismic load to evaluate the slab column connection performance. The results showed that the failure of this structural system is fragile. In both specimens flexural yielding was not developed before the failure due to the punching shear.

Keywords : Seismic design; punching shear; reinforced concrete; slab-column connection.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )