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本文结合施工实践，推导给出了缓和曲线段钢箱梁肋板、边线长度和坐标的计算公式，用于缓和曲线钢箱梁和其它结构梁的放样计算。
Based on the construction practice, this paper deduces the calculation formula of the length and coordinate of the steel box girder in the mild curve section, which is used to ease the setting-out calculation of the steel box girder and other structural beams.