电缆桥架的上翼缘局部屈曲是其破坏的主要形式之一。

Local buckling at upper flange slab of cable bridge is one of the principal damage forms.

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在上翼缘处有足够的松动，因而在主梁腹板上并不会引起很大的相对扭转。

At the top flange there would be enough slack so that no relative twist of any significant magnitude would be introduced into the girder web.

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桥石板为上翼缘提供了很大的固结度，于是相邻的腹板间隙就经受了较大的变形并且首先开裂。

The slab has provided greater fixity to the top flange, and the adjacent web gap has experienced greater deformation and has cracked first.

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