根据材料力学纵弯杆概念，从定量角度分析了横向剪应力在纵弯褶曲中的分布和演化。

On the basis of the concept of the vertical crooked arm in material mechanics, a quantitave analysis of the distribution and evolution of horizontal shear stress in vertical folding is discussed.

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它们可以有直的、弯的或偏置的刀杆。

They can have straight, bent, or offset shanks.

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单轴对称的角钢、T型钢压杆有必要做弯扭屈曲验算。

Struts of monosymmetric section built with angles and cut-Ts need to be checked on flexural-torsional buckling.

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