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Steel Structure Design slenderness ratio is calculated

Steel Structure Design slenderness ratio is calculated

First, the two-limb combination member:

Where λx for x-axis slenderness ratio of all member; λl disagreement minimum stiffness axis 11 of slenderness ratio, which is calculated length is taken as: welding, net interval between two adjacent battens; bolt connection, the phase two adjacent battens marginal bolt spacing; Alx member cross section perpendicular to the x-axis of each oblique lacing the sum of gross cross-sectional area. Guangzhou Steel

Second, the limbs combination member:

Where λy on the y-axis slenderness ratio of all member; each Syria lacing bar and Aly gross cross-sectional area of the 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 °. Guangzhou Steel