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
The closed form solutions of the critical load and the deflection contour of the delamination buckling decided by delamination radius, and the bridging factor are obtained.