关于钢-混组合斜拉桥辅助墩设置分析研究

Analysis and Research on Setting of Auxiliary Piers for Steel-concrete Composite Cable-stayed Bridge

摘要:

阐述了斜拉桥的受力体系和边跨辅助墩的设置机理，并以江苏某主跨300 m的钢-混组合斜拉桥为研究背景，采用主梁应力幅、主梁竖向变形幅和主塔水平位移幅为指标，设计了与不同辅助墩设置位置相对应的6种工况；对不同工况下的计算结果进行分析研究后，给出了合理的辅助墩设置区间。

Abstract:

The stress system of cable-stayed bridge and the setting mechanism of side-span auxiliary piers are set forth. Taking a steel-concrete composite cable-stayed bridge with a main span of 300 m in Jiangsu Province as the research background, six different constructing conditions are designed by using the indexes of stress amplitude of the girder, the displacement amplitude of the girder and the horizontal displacement amplitude of the main pylon. The calculation results under the different constructing conditions are analyzed and studied. The reasonable setting interval of auxiliary pier is given.