试验证实，体外索钢箱-混凝土组合梁比普通的钢箱-混凝土组合梁的刚度提高54.15%，极限强度提高27.72%。

The experiment results prove that the stiffness and the ultimate strength of the steel-concrete composite box beam are increased by 54.15 % and 27.72 %, respectively, through using external tendons.

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近年来，在我国许多的城市道路建设中，钢箱—混凝土组合梁这种结构形式越来越多地被采用。

Recently, composite steel-concrete beam is adopted more and more in the urban road of our country.

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组合箱梁结构充分利用了钢箱结构和混凝土结构的优点。

The composite box beam may make use of the advantage both the steel box beam and the reinforced concrete slab.

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