Akademik Veri Yönetim Sistemi
JOURNAL OF BUILDING ENGINEERING, cilt.77, sa.2023, ss.1-17, 2023 (SCI-Expanded)
In this paper, for the first time, the binary/ternary hybrid fiber and/or shear stud reinforcement as a
measure was used to improve the punching performance of flat-slab systems by innovative selfcompacting concrete (SCC). Because in these slab systems, sudden and brittle punching failure can be
seen due to application and design errors, early removal of formwork, changes in the purpose of use
of the building, earthquakes, etc. Besides, numerous studies investigated the punching performance
of the single fiber and/or shear stud reinforced flat-slab systems, but research into the measures of
the hybrid fiber or the combined use of hybrid fiber and shear stud reinforcement, which were the
variable parameters of this study, was quite lacking. For this purpose, the half-scale slab-column
connection elements were produced from SCC containing different punching measures
(binary/ternary hybrid and/or shear stud) and tested to investigate the punching performance of flatslab systems. In conclusion, it was found that hybrid fiber reinforcement was the best punching
measure to improve the punching performance of slab-column connection elements with/out shear
stud. Besides, 3D graphs were drawn so that designers and researchers could estimate the punching
strength and energy absorption capacity for flat-slab systems with/out shear stud based on the
parameters of micro fiber type and total volume fraction. On the other hand, empirical formulas
were developed to predict the punching strength of binary/ternary hybrid fiber reinforced flat-slab
systems with/out shear stud by compressive strength, fiber reinforcement index, the slab useful
height, and the punching perimeter parameters.