高速公路平面控制测量投影改正的新方法

将高速公路平面控制测量常用的投影改正方法和保持方位角不变的算法,应用于湖北省某高速公路平面控制测量中,逐点改算平面控制点坐标。结果表明,该方法不仅满足长度变形值的规定,同时也达到了施工放样时对起算方向的需求。

Projection Deformation in the Planar Control Survey of Highway

Based on the method of the projection deformation in the planar control survey of highway,combining retain of azimuthal angel,this paper performed a new application in planar surveying of a highway in Hubei province,correcting the planar coordinates point by point.Results show that this application not only satisfies the rule of orientation value,but meets the requirement of start direction in setting-out work.