某斜拉桥成桥阶段合理受力状态分析

Analysis on Reasonable Stress State of a Cable-stayed Bridge at the Completion State

为确定某斜拉桥的成桥阶段的合理受力状态,该文采用内力平衡法,以控制截面的内力为目标,对主梁及斜拉索各项技术指标进行验算。计算结果表明内力平衡法可以兼顾主梁和主塔的内力,控制截面选择恰当,该方法在该斜拉桥的设计过程中起到了良好的作用。该斜拉桥的设计分析过程对其他类似工程具有一定的参考价值。

In order to determine the reasonable stress state of a cable-stayed bridge at the completion stage, this paper introduces the internal force equilibrium method to conduct checking calculations on the technical indexes of the girder and the stayed cable, so as to control the internal force of the section. The calculation results suggest that the internal force equilibrium method can take count of the internal force of the girder and the major tower to help choose the proper control section. This method gives great assistance in the designing process of this cable-stayed bridge. It offers references for similar projects.