Steel Structure Design slenderness ratio is calculated

First, the two-limb combination member:

On the x-axis slenderness ratio where λx entire member; λl disagreement minimum stiffness axis 11 of slenderness ratio, which is calculated length is taken as: welding, net distance between two adjacent battens; bolt connection, the phase two adjacent battens bolt edge distance; Alx member cross section perpendicular to the x-axis of each oblique lacing the sum of gross cross-sectional area. Hainan Steel

Second, the limbs combination member:

Where λy entire component of the y-axis slenderness ratio; each Syria lacing bar and hair-sectional area of Aly member cross-section perpendicular to the y axis.

Third, the combination of conjugated pieces for the three limbs of the member conjugated:

Wherein each member section A1 oblique cross-sectional area of the Lace and wool;

Note: ① battens stiffness should meet the requirements of the line.

② oblique angle between the axes of the Lace and member should be within the range of 40 ° ~ 70 °. Hainan Steel