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International Journal of Concrete Structures and Materials

Table 6 Accuracy of shear capacity calculation by different equations

From: The Shear Capacity Estimation of Reinforced Concrete Short Beams with Steel Fiber by Digital Image Correlation Approach

No.

Volume fraction (%)

fc′ (MPa)

a/d

bw (mm)

θ (°)

Vexp (kN)

w (mm)

Vexp/VDIC (k = 1.00)

Vexp/VDIC (k = 0.43)

Vexp/VKhu

Vexp/VSha

1

0.5

41.0

1.0

150

45

297.4

142

0.48

1.12

2.48

1.33

2

1.5

34

224.8

147a

0.45

1.04

2.60

1.28

3

2.0

27

149.0

117

0.46

1.08

2.14

1.13

4

1.0

52.5

1.0

45

402.8

232

0.31

0.73

2.56

1.59

5

1.5

34

276.2

156

0.41

0.94

2.31

1.35

6

2.0

27

184.8

112

0.47

1.09

1.83

1.15

Average

0.43

1.00

2.32

1.31

Coefficient of variation (CV) (%)

14.8

14.8

12.7

12.9

  1. fc′: concrete compressive strength; a/d: shear span ratio; bw: web thickness; θ: angle of compressive strut; Vexp: experimental shear capacity; w: width of compressive strut
  2. aObtained at the load level of 90% of the peak load, since the data at the peak load could not be obtained
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