Akademik Veri Yönetim Sistemi
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, cilt.49, sa.4, ss.6007-6026, 2024 (SCI-Expanded)
The punching shear failure that occurs in the vicinity of the slab-column connection is of utmost importance due to its brittle nature, which may lead to progressive collapse of flat-plate structures. Therefore, the development of reliable design guidelines requires accurate prediction of the punching shear resistance of the slab-column connection region. This paper introduces a new punching failure criterion for nonlinear grid beam modeling of slab-column connections based on the concrete compressive strain at the extreme compression fiber of the cross section at failure. To simulate nonlinear behavior, flexure and torsion hinges were incorporated into the grid beam elements. The proposed failure criterion was calibrated using 34 isolated slab specimens from literature, and its accuracy was validated using another set of 32 isolated slab test specimens. Additionally, the reliability of the proposed modeling strategy was examined for continuous slab systems by considering the results of numerical and experimental studies on multi-span flat-plate systems from the literature.