Shear Database and Study of the Parameters Influencing Shear Behavior - On Shear Behavior of Structural Elements Made of Steel Fiber Reinforced Concrete - page 158

Table 8.10 Summary of
statistics of reinforced beams
only with bers

Reinforced beams (beams with bers)
EHE-08 MC2010 RILEM

Minimum 0.62 0.73 0.59

Maximum 1.87 2.36 1.79

Average 1.17 1.25 1.13

Standard deviation 0.26 0.32 0.26

CoV (%) 22.32 25.81 23.07

5th percentile (%) 0.80 0.84 0.77

95th percentile (%) 1.69 1.87 1.63

Table 8.11 Summary of
statistics of prestressed beams
only with bers

Prestressed beams (beams with bers)
EHE-08

MC2010 RILEM

Minimum 0.93 1.05 0.83

Maximum 1.70 2.19 1.73

Average 1.29 1.57 1.20

Standard deviation 0.21 0.32 0.24

CoV (%) 15.92 20.23 20.20

5th percentile (%) 1.04 1.20 0.93

95th percentile (%) 1.64 2.10 1.66

8.6 Case 4: Beams with Fibers and Stirrups

Table 8.12 summarizes the ranges of the different parameters used in beams
transversally reinforced with stirrups and

bers. A table for prestressed beams has
no sense in this case, because only two prestressed beams are available in the
database.
In fl uences in SM due to the parameters: a/d, d, f cm and A s ʱ /s were not detected.

Table 8.12 Range of parameters in the shear database of reinforced beams with only bers
(N = 19)
Parameter Minimum Maximum Average CoV (%)

d (mm) 210 650 293.68 34.65

a/d 3.10 4.50 3.53 10.06

f cm (MPa) 38.00 50.67 45.33 9.91

f R3 (MPa) 1.22 8.54 3.19 56.33

Amount of bers (kg/m 3 )

15 60 39.95 42.52

ρ (%) 1.56 3.56 2.99 26.41

˃ c (MPa)

- - - -

A s ʱ /s (cm 2 /m) 1.40 3.53 2.18 34.50