Title: Shear and Punching Strength of Reinforced Concrete Voided Slabs

Author(s): Dario Coronelli, Francesco Foti, Luca Martinelli, and Elisa Barbarelli

Publication: Symposium Paper

Volume: 321

Issue:

Appears on pages(s): 3.1-3.14

Keywords: Reinforced Concrete, Voided slabs, Shear, Punching

DOI: 10.14359/51701190

Date: 9/29/2017

Abstract:
The paper reports tests to investigate shear and punching behavior of voided slabs, part of a research aimed at studying the structural response of such systems. The voids are shaped like a truncated pyramid. The program included a series of twelve slabs, divided into four groups according to the transverse steel arrangement. The slabs were loaded by one or two forces and supported on two sides. This loading scheme was chosen to investigate the load transfer and resistant mechanism in the slab with voids, with the aim of studying the shear transfer at a column. Failures under point loads close to the support correspond to those typical in thick slabs. A combination of two failure modes occurred, with punching and diagonal shear tension. The capacity must be predicted using the concrete cross section reduced by the voids.