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2026-02-27

Design Shear Resistance in Shear Joint

vRd,i=c·fctd+μ·σn+ρ·fyd·μ·sinα+cosα≤0,5·ν·fcd

c, μ

Coefficients describing the joint roughness according to [1], 6.2.5

fctd

Design value of the concrete tensile strength according to [1], 3.1.6

σn

Smallest stress perpendicular to the joint, which acts simultaneously with the shear force (positive for compression), where σn < 0.6 ⋅ f_cd

ρ

As/ Ai
where
As is the cross-sectional area of reinforcement crossing the joint
Ai is the area of the connection joint

α

Inclination angle of the joint reinforcement

ν

Strength reduction factor according to [1], 6.2.2 (6)
;