在高墩大跨下部结构的设计中,以大跨连续刚构和高墩装配式梁桥为研究对象,分析下部变截面空心墩在不同边界条件下单墩稳定系数与计算长度的相关关系,对计算结果提炼出经验方法及计算公式,并根据误差回归分析来验证方法的可靠性。最后在此基础上总结出一套行之有效的改进高墩截面配筋的计算方法,并为后续设计取值参数提供借鉴和参考。 In the design of the high pier large span substructure, the long-span continuous rigid frame and high pier composite girder bridge is taken as the research object to analyze the correlation between the stability coefficient and the calculated length of the single pier under different boundary conditions, The experimental results and calculation formulas are extracted from the calculation results, and the reliability of the method is verified by error regression analysis. Finally, based on this, a set of effective calculation methods to improve the section reinforcement of high pier is summarized, which can provide reference and reference for the subsequent design parameters.