Shear Database and Study of the Parameters Influencing Shear Behavior - On Shear Behavior of Structural Elements Made of Steel Fiber Reinforced Concrete - page 160

ρ l = 3.5 % have similar levels of SM for all Codes. The MC2010 is the most
balanced in both: reinforced and prestressed.

8.6.3 In fl uence of the Stress Due to Prestressing Actions, σ c

In this subset (beams reinforced with bers and stirrups) there are only two pre-

stressed beams, so they are not enough to formulate strong conclusions, but it seems
that when both reinforcements are present ( bers + stirrups) SM for prestressed

beams is higher.

Table 8.13 Summary of statistics of reinforced beams only with bers
Reinforced beams ( bers and stirrups)
EHE-08 MC2010 RILEM

Minimum 0.88 0.79 0.80

Maximum 1.85 1.63 1.60

Average 1.38 1.28 1.21

Standard deviation 0.27 0.23 0.23

CoV (%) 19.82 18.29 18.82

5th percentile (%) 0.96 0.86 0.85

95th percentile (%) 1.73 1.55 1.52

8.6.4 General Behavior of Codes for Beams with Stirrups
and Fibers

EHE08 has a CoV slightly greater than MC2010 and RILEM, but EHE08 also is the
safer Code for this subset, presenting the greatest value of the 5th percentile
(Table 8.13 ). Table 8.14 summarizes the main conclusions obtained in Sects. 8.3

- 8.6 .

Table 8.14 Main conclusions of Sects. 8.3 8.6

-

Parameter Neither bers

nor stirrups

Beams only with
stirrups

Beams only
with bers

Beams with
bers and
stirrups

d (mm) EHE08,

MC2010 and
RILEM: For
d = 1,440 mm,
SM are unsafe
and, for

In the range
400 < d < 900 mm,
SM increases when
increases for rein-
forced beams

- -

(continued)