论文部分内容阅读
北京市测绘院编制供道路工程使用的《回旋曲线图集》现已出版。内容包括曲线图表和测设说明两部分。曲线图表以参数A值等于20至500分为49个档次,分列曲线元素值表并按比例尺绘出曲线图。测设说明中对基本型对称曲线、回旋曲线及其平行线、连接回旋曲线的圆曲线均列有定线测设方法,并提供灵活使用回旋曲线图表及在不同
Beijing Institute of Surveying and mapping for the use of road construction, “Curvature Curve Atlas” has now been published. The content includes curve chart and measuring instruction two parts. The curve chart is divided into 49 grades with the value of A being equal to 20 to 500, dividing the curve element value table and plotting the curve on a scale. In the survey description, the method of alignment measurement and measurement is listed for the basic symmetrical curves, the clothoid curves and their parallel lines, and the circular curves connecting the clothoid curves, and the flexible use of the clothoid curve charts and the comparison between the different