Civil Engineering Reference
In-Depth Information
Chapter 2
Objectives and Research Signi
cance
2.1 Objectives
The main objective of this Ph.D. thesis is to study the different parameters affecting
the shear behavior of concrete reinforced with steel
bers. It also aims to determine
the in
uence of the different parameters involved and examine certain design
Codes, with particular reference to the role of
fl
ber reinforcement.
2.2 Speci
c Objectives
After a thorough study of the literature dealing with shear forces, the behavior of
ber reinforced concrete (FRC) beams was analyzed. Particular attention was
devoted to the behavior of both precast elements and those made in situ in a number
of experimental tests.
This Ph.D. thesis tries to provide answers to some issues that are still the subject
of enquiry in the research community.
The speci
c objectives are the following:
To conduct a review of the literature with particular attention to how the phe-
nomenon has been analyzed in both traditional reinforced concrete and pre-
stressed elements. An additional aim is to compile an extensive bibliographical
database to facilitate consistent parametric analysis.
To analyze the in
bers in the context of size in the form of the shear
behavior of large concrete beams.
fl
uence of
To study the in
fl
uence of
fl
ange size in prestressed double-T beams.
To analyze the different shear responses obtained from concretes of different
toughness by the use of different
ber content and geometry. For this, the shear
behavior, failure modes and the validity of design formulas recommended by a
number of building codes were analyzed.
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