Table 2 Comparisons with, the test results performed by Leonhardt (1965)
Specimen |
ET1 |
ET2 |
ET3 |
ET4 |
|---|---|---|---|---|
Beam properties | ||||
f ck (MPa) | 27.93 | 27.93 | 27.93 | 27.93 |
b w (cm) | 30 | 15 | 10 | 5 |
d (cm) | 30 | 30 | 30 | 30 |
a (cm) | 105 | 105 | 105 | 105 |
a/d | 3.5 | 3.5 | 3.5 | 3.5 |
ρ (%) | 1.40 | 2.80 | 4.20 | 8.40 |
ρ v (%) | 0.17 | 0.34 | 0.51 | 1.03 |
f y (MPa) | 460 | 460 | 460 | 460 |
fαv (MPa) | 314 | 314 | 314 | 314 |
V n,f (kN) | 140.9 | 140.9 | 140.9 | 140.9 |
Measured value | ||||
V u (kN) | 142.2 | 116.7 | 98.1 | 88.3 |
f v at V u (MPa) | 161.7 | 314 | 314 | 314 |
Predicted value | ||||
α u | 0.360 | 0.395 | 0.415 | 0.462 |
θ u (x = a/2) (°) | 44.6 | 45.4 | 43.6 | 41.4 |
z x (x = a/2) (cm) | 21.04 | 20.46 | 20.18 | 19.63 |
f v at V u (MPa) | 150.3 | 315.7 | 294.2 | 284.4 |
V α = α u V u | 51.2 | 46.6 | 42.8 | 41.2 |
V ci by Eq. (26) | 74.5 | 37.3 | 24.8 | 12.4 |
V s (kN) | 16.5 | 32.6 | 34.2 | 35.9 |
V u = V α + V ci + V s (kN) | 142.2 | 116.5 | 101.8 | 89.5 |
V u Predicted / V u Measured | 1.00 | 0.99 | 1.04 | 1.01 |
Failure mode | Flexure | Stirrups yielding | ||
