高墩大跨度曲线连续刚构梁施工阶段的横向位移研究

摘要

When continuous rigid frame bridge is in construction, with the increasing of the length of cantilever, girder structure will vertically deform due to the coupling effect of bending, this kind of deformation then will make top pier horizontally displaced, furthermore, primary beam also will be displaced. In this paper, taking a long span bridge in Sichuan province as an example, mechanical analysis method is used to get displacement e⁃quation and reliability of equation is verified.%曲线连续刚构桥在采用挂篮悬臂施工时，随悬臂长度的增加，主梁结构会由于弯扭耦合作用而发生不断增加的竖向和扭转变形，使得墩柱顶端发生横向偏移，主梁也随之偏移，对该横向偏移进行研究，利用力学的分析方法推导出径向偏移公式；以四川某大跨度曲线桥施工为依托，验证计算公式的可靠性。