摘要
针对传统纸上定线方法效率低及制约公路多方案比选的问题,通过对地形图数字化的原理分析,提出直接在AutoCAD平台制作三维数字地形图的实用技术,并研究应用纬地道路CAD软件构建不规则三角网DTM的建模精度控制。应用结果表明:地形图三维数字化技术可快捷完善地制作精度可靠的数字地形图,据此构建数字地面模型,可实现公路设计的内外业自动化作业,对缩短道路勘测设计周期、提高设计质量有实际意义。
For traditional paper alignment the method is inefficient and limited in the highway scheme selection. Through the analysis of digital topographic maps, it presents the practical techniques of making digital topographic maps directly in AutoCAD platform, and the application of Wedi Road CAD software to the triangulation digital terrain model（DTM） precision control. Results indicate that the technique of 3D digital topographic maps can be made in quick, perfect and reliable precision. Based on it, the indoor and field work in highway design can be realized, which has practical significance to shorten the road surveying and design cycles, and to improve the quality of design.
出处
《黑龙江工程学院学报》
CAS
2013年第2期26-31,共6页
Journal of Heilongjiang Institute of Technology
