Title:
Steel Fibers as Shear Reinforcement in Partially Prestressed Beams
Author(s):
Kiang-Hwee Tan, P. Paramasivam, and K. Murugappan
Publication:
Structural Journal
Volume:
92
Issue:
6
Appears on pages(s):
643-652
Keywords:
beams (supports); fiber reinforced concretes; fibers; partial pre-stressing;
shear strength; stress-strain relationships.
DOI:
10.14359/9659
Date:
11/1/1995
Abstract:
The behavior of partially prestressed beams with steel fibers, alone or in combination with stirrups as shear reinforcement, was investigated in this study. A test program was carried out with the partial prestressing ratio, the shear span-to-effective depth ratio, and the steel fiber content of the beam as major parameters. The influence of the various parameters on beam behavior is discussed. Test results indicate that stirrups may be replaced by an equivalent amount of steel fibers without affecting the stiffness, shear strength, and cracking behavior of the beam. The equivalence of steel fibers to stirrups is determined from the consideration of equilibrium of a cracked element, and a simple equation is proposed for the prediction of the shear-carrying capacity of partially prestressed steel fiber concrete (SFC) beams.