2.4.4.3 Shear force resistance of the concrete compression strut

Shear force resistance of the concrete compression strut

For structural components with shear reinforcement perpendicular to the component's axis (α = 90°), the shear resistance V_Rd is the smaller value from:

$V_{Rd,s} = \left(\frac{A_{SW}}{s}\right) · z · f_{ywd} ·cot \theta \text{(6.8)}$

$V_{Rd,max} = {\alpha }_{cw} · b_w · z · {\nu }_1 · \frac{f_{cd}}{(cot \theta + \tan \theta ) } \text{(6.9)}$

where

For structural components with inclined shear reinforcement, the shear force resistance is the smaller value from:

$V_{Rd,s} = \left(\frac{A_{SW}}{s}\right) · z · f_{ywd} ·\left(cot \theta + cot \alpha \right) · sin \alpha \text{(6.13)}$

$V_{Rd,max} = {\alpha }_{cw} · b_w · z · {\nu }_1 · f_{cd} · \frac{(cot \theta + cot \alpha )}{(1 +co{t}^2 \theta )} \text{(6.14)}$