Civil Engineering Reference
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Fig. 6.10 Crack width evolution indicated over the load-de
fl
ection curve
Fig. 6.11 V
test
-
f
R3
response
instead of f
R3
. In order to analyze these same graphs (Figs.
6.11
and
6.12
), the
“˄”
value for the beams with stirrups was determined through an analogy which consist
on assume the V
su
(corresponding to the stirrups contribution to shear) equal to V
fu
(corresponding to the
bers contribution to shear) obtaining,
in this way, an
equivalent
d) which obviously have
the same value for both graphs (Figs.
6.11
and
6.12
) corresponding to f
R3
and the f
Rm
,
respectively. This is:
τ
value for the shear reinforcement (
τ
= V
su
/b
·
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