所得到的刚度矩阵表明，只有当忽略翘曲变形对截面转角的影响时，轴向拉压才只与水平弯曲及竖向弯曲相耦合，而与约束扭转不再耦合。

It is shown that, when the effect of warping on rotation Angle is neglected, tension (or compression) is only coupled with horizontal bending and vertical bending instead of constrained torsion.

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薄壁构件在扭转荷载作用下截面产生翘曲变形，在强度、稳定和振动的计算中应考虑到截面翘曲变形的影响。

Torsional loads produce warping displacements in thin-walled members. Its influence on strength, stability and vibration of thin-walled members must be considered in many cases.

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