纵向框架支撑有两个主要作用：抵抗水平力和保证框架纵向刚度。

Longitudinal bracings are used to carry horizontal loads and to maintain the stability of the longitudinal frame.

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纵向框架支撑有两个主要作用：抵抗水平力和保证框架纵向刚度。

Longitudinal bracings are used to carry horizontal loads and to maintain the stability of the longitudinal frame.

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