What kind of global buckling may occur for the bidirectional flexural solid-web beam-columns? ( )
A. Bending buckling
B. Torsional buckling
C. Lateral-torsional buckling
Distortional buckling
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when verify the stability of a built-up compression members about the virtual axis, why the equivalent slenderness ratio λ0x is used? ()
A. The overall stability bearing capacity of built-up member is higher than that of solid-web members having a same size section.
B. Consider the effect of strength
Consider the influence of instability of column limb on the bearing capacity of members
D. Consider the adverse effect of shear deformation
In the following options, which condition can be used to realize a equivalent stability about two principal axes for an axial compression member ().
A. The lengths of the member about the two principal axes are equal
B. The calculated length about the two principal axes are equal
C. The slenderness ratio about the two principal axes are equal
D. The geometric dimension about the two principal axes are equal
If the stability coefficients φ of axial compression columns with a type a, b and c sections are φa、φb、φc, respectively, in the following items, which one is correct? ( )
A. φa≤φb≤φc
B. φb≤φa≤φc
C. φc≤φb≤φa
D. Can't judge
What should be checked in the serviceability limit state? ( )
A. Strength
B. Stiffness
C. Global stability
D. Local stability
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