基于数据库的数模在公路CAD中的应用

着重于数字地面模型（ＤＴＭ）在公路路线ＣＡＤ的实用技术,介绍在ＡｕｔｏＣＡＤ图形环境下,基于ＡＣＣＥＳＳ数据库的数字地面模型的排序分格、构网、优化、交互编辑及生成纵、横地面线和三维地面模型,有较好的理论与实用价值。

Application of Database-based Digital Terrain Model on Computer Aided Design for Highway Alignments

Inorder to improve the applied techniques for digital terrain model (DTM), this paperpresented a new way with the help of ADS/ARX development kit and database management toconstruct DTM(Triangulation Irregular Network) graphically and dynamically on the AutoCADenvironment. The main works of DTM range from the ordering of dispersed terrain points,the editing of points, feature lines or forbiddenarea, the optimizing of triangulation,the evaluating formed DTM and finally the creating of 3D terrain. As all the aboveoperations were based on database management, it showed some advantages which thetraditionally methods do not have. Therefore, the quality and and efficiency of highwayalignments design was better than before.