Title:
Shear-Flexure Coupling Behavior of Steel Fiber-Reinforced Concrete Beams
Author(s):
Thomas H.-K. Kang, Woosuk Kim, Leonardo M. Massone, and Tito A. Galleguillos
Publication:
Structural Journal
Volume:
109
Issue:
4
Appears on pages(s):
435-444
Keywords:
shear-flexure interaction; shear span-depth ratio; steel fiber-reinforced concrete
DOI:
10.14359/51683863
Date:
7/1/2012
Abstract:
In this study, shear-flexure coupling behavior of steel fiber-reinforced concrete (SFRC) beams was investigated. As part of the experimental study, 12 SFRC beams were tested under low-to-high shear-to-moment ratios and with different quantities of steel fibers and longitudinal reinforcement. Both normal- and high-strength concrete with steel fibers were evaluated. The test results were then used to validate the nonlinear modeling techniques developed for considering shear-flexure coupling effects in SFRC beams. Three different cases of transverse normal stress or strain profiles in the beam shear span were employed in the analytical model, depending on the presence and extent of yielding of the longitudinal steel bars. The shear-flexure interaction model reproduced the degradation associated with the shear behavior and ductility quite accurately.