30x

000728

2024-01-16

公式 2

f_{yb} = 0.9 \cdot 235 = 211.50 N / {mm}^{2} ([1] 表 3.1 a, 注释 1)

k = \frac{f_{yb}}{228} = \frac{211.50}{228} = 0.928

k_{1} = 1.33 - 0.33 \cdot k = 1.33 - 0.33 \cdot 0.928 = 1.024

k_{2} = 1.15 - 0.15 \cdot \frac{r}{t} = 1.15 - 0.15 \cdot \frac{2.0}{2.0} = 1.00

k_{3} = 0.7 0.3 \cdot {(\frac{ϕ}{90})}^{2} = 0.7 0.3 \cdot {(\frac{90}{90})}^{2} = 1.00

您有什么问题想问的吗？