The effect of in-plane bending deformation on the lateral_torsional buckling of beam_columns is considered and the effect form, the additional moment factor, is obtained.
得出了平面内弯曲变形对压弯构件弯扭屈曲的影响形式，这一形式可用统一的弯矩附加系数表达。
2
Making use of the moment vector and radius vector of rotation, the lateral buckling of thin-walled members are analyzed.
以弯矩矢量和转角向径为工具，分析了薄壁构件的弯扭屈曲。
3
This paper can satisfy the requirement with steady lateral buckling with the method that scales down the bending moment and abate the space between beams.