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缓和曲线现场如何放样

更新时间: 2020-09-26 00:00:00     

1、先放主点;

2、通过计算缓和曲线的的要素,在交点上架仪器,根据T值和偏角可以放样出ZH和HZ点;

3、在根据外矢距和180度减去偏角在除以2的角值,放样出QZ点;

4、用直角法放样出HY点和YH点,既根据X等于L减去L除以40RL,Y等于L除以6RL,在两切线上,自JD起分别向曲线起、终点量取T减去X;

5、然后沿其垂直方向量Y,既完成现场放样。

关键词: 缓和 曲线 现场 如何

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