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基于法线偏差的旧路平面线形拟合精度评估方法

, PP. 36-40

Keywords: 道路工程,旧路平面线形拟合,步长压缩摆动趋近法,拟合精度指标,拟合法线偏差

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Abstract:

?在论述拟合法线偏差定义、构成及性质的基础上,提出以拟合法线偏差表征旧路平面线形拟合偏差;建立了基于法线偏差的旧路平面线形拟合精度指标;提出了采用步长压缩摆动趋近法计算拟合法线偏差的算法,并就拟合法线偏差的符号判定准则及方法进行了讨论。最后对321国道某路段旧路改造设计中的平面线形拟合精度进行评估。结果表明:按照外业、内业2个阶段,采用拟合精度指标控制旧路平面线形拟合质量是可行的。

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