D.5.B.14.1 Reduction in Bending due to Shear
EN 1993-1-1:2005 has provisions to reduce the moment resistance of the cross section when certain conditions for shear capacity are not met as mentioned in Cl:6.2.8. The Dutch National annex also specifies for:
- Class 1 and Class 2 I-section with equal flanges for bending about weak, the design value of
the yield moment reduced by shear will be determined using:
where
= = - the plastic section modulus of the member about the Z axis
= - yield strength
= - shear force applied in the Y direction
= - shear capacity in the Y direction.
STAAD.Pro calculates this per Eqn. 6.18 in EN 1993-1-1 as described in the National Annex using .
= - safety factor
- Class 1 and Class 2 square and rectangular hollow sections when bending about strong axis,
the design yield moment reduced by shear force may be determined using:
where
= = - the plastic moment capacity about the Y axis
- t
= - thickness of the member
- h
= - depth of the member
= - shear force applied in the Z direction
= - shear capacity in the Z direction.
STAAD.Pro calculates this per Eqn. 6.18 in EN 1993-1-1 as described in the National Annex using
- For class 1 and 2 square and rectangular hollow section when bending about weak axis, the
design yield moment reduced by shear force may be determined using:
where
= - the plastic moment capacity about the Z axis
- b
= - width of the member
= - shear capacity in the Z direction.
STAAD.Pro calculates this per Eqn. 6.18 in EN 1993-1-1 as described in the National Annex using