变截面高桥墩的稳定性研究

Research on stability of variable cross-section high bridge pier

根据混凝土桥梁变截面高桥墩沿高度方向的刚度变化规律,建立了相应的分析计算模型,导出了在该计算模型下结构临界荷载的计算公式,将解析法与ANSYS软件所得计算结果进行了对比分析,证明了解析公式的正确性,通过对白水冲特大桥左幅11号过渡墩进行稳定性分析和墩身参数分析,得到了桥墩坡度与稳定系数的对应关系,为今后类似的工程问题提供一定指导。

According to the rule for the stiffness changes of the variable cross-section high bridge pier of the concrete bridge along the height,the paper establishes the respective analysis calculation model,induces the calculation formula for the structural critical loading of the calculation model,has the comparison and the analysis of the calculation results of the analysis method and the ANSYS software,proves the correctness of analysis formula,undertakes the stability analysis and the pier parameter analysis of No.11 pier of the left side of Baishuichong super-large Bridge,and concludes the respective relationship between the pier slope and the stability coefficient,so as to provide the direction for the similar projects in future.