Title:
Interface Shear Capacity and Flexural Performance of Hybrid Beams
Author(s):
Ravi Singh, Yukihiro Sato, Hitoshi Sasaki, David Mukai, and Susumu Kono
Publication:
Structural Journal
Volume:
121
Issue:
3
Appears on pages(s):
109-118
Keywords:
coefficient of friction; concrete-to-concrete interface; concrete-to-steel interface; flexural capacity; hybrid beam; shear-friction capacity; shear-friction reinforcement; slab-web interface
DOI:
10.14359/51740482
Date:
5/1/2024
Abstract:
This paper introduces details of a new hybrid beam system
connected to a reinforced concrete (RC) column. The hybrid beam
system is a wide-flange steel beam embedded in RC beams on both
ends without any shear connectors. The wide-flange steel beam
does not penetrate through the beam-column joint, which reduces
the fabrication cost compared to the typical steel beam-RC column
hybrid system. A total of 10 hybrid beam specimens were designed
with a slab-web interface. Four specimens were used to examine
the shear sliding capacity at the slab-web interface, and an equivalent
coefficient of friction at the interface, together with a method to
evaluate the shear sliding capacity, was proposed. The remaining
six specimens were used to examine the flexural capacity and
plastic deformation capacity of the hybrid beam, and shear-friction
reinforcement details required for ductile flexural behavior were
proposed.