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Shear response investigation of HSRC deep beams without web reinforcement. Part I: design equations

Research Authors
Ahmed Ramadan , Aly G. Aly Abd-Elshafy, Mahmoud H. Ahmed; Atif M. Abdel-Hafez
Research Member
Research Department
Research Year
2012
Research Journal
International Journal of Advanced Engineering Applications
Research Publisher
NULL
Research Vol
5 - 5
Research Rank
1
Research_Pages
44 - 55
Research Website
NULL
Research Abstract

Currently, there is no general agreement on a theory describing the response of reinforced concrete members
without web reinforcement. Many structural systems rely on design is usually performed using empirical or semi-empirical
expressions provided by codes of practice that do not consider the influence of many governing parameters. In this paper, a
comparison between values of current experimental shear strength and those of various international design approaches like
ACI (FIP,1996), Canadian (CSA,1994),FIB (1999),and the method proposed by Sudheer (2011), Zararis (2003),Zsutty
(1971),Shah (2009),Bazant (1984),and Russo (2005) have been calculated and analyzed on 18 simple span HSRC deep
beams without web reinforcement were tested under monotonic two point loads at the mid span to examine the contribution
of various parameters on the shear capacity of HSRC beams like; f‘cu=50 MPa, three values of tension reinforcement
(0.73%,1.21% &1.83%) and shear span to effective depth ratio-a/d-( 2,1.5 &1) were selected to mainly study the behavior of
deep beams, where typical shear failure can be anticipated. ACI and FIB code provisions for shear in HSC are safe for use
with the exception that CSA should be used with care; it might have a tight safety margin against brittle shear failures.