Analysis shows that it is the best way to improve the stress distribution of the twin-box single cross section of cable-stayed bridge by thickening the bottom flange.
分析表明：加厚底板对斜拉桥双箱单室箱形主梁应力分布的改善效果最佳。
Analysis could also show, to improve the stress distribution of the twin-box single cross section of cable-stayed bridge, it is the best way by thickening the bottom flange.
分析还表明，加厚底板对斜拉桥双箱单室箱形主梁应力分布的改善效果最佳。
Tests show that the cross section of the whole deck, working jointly as the lower flange of the main girder, should be taken for the calculated section subjected to longitudinal prestressing force.
试验证明，在纵向预应力作用下的计算截面应取道床板全部截面作为主梁下翼缘共同工作。
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