Bending and shear (6.2.8)

We have to distinguish between two basic cases:

  1. $\boldsymbol{V_{Ed} \le 50 \% V_{pl,Rd}}$ and shear buckling does not reduce the section resistance (usually sections of class 1)
    The shear might be ignored
  2. Otherwise
    Reduced moment resistance is computed:
    $f_{y, reduced} = (1-\rho)f_{y}, \hskip2em \rho = (2V_{Ed}/V_{pl,Rd} - 1)^2$

Example (reducing the strength in bending due to shear)

If a load is

then $\rho = (2\cdot 7 / 12 - 1)^2 = 0.03$. The moment resistance is reduced by 3 %.

If a load is

then $\rho = (2\cdot 10 / 12 - 1)^2 = 0.44$. The moment resistance is reduced by 44 %.

Also note that for $V_{Ed} = 50\ \% V_{pl,Rd} \implies \rho = 0$


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