基于AutoDesk Map 3D的土方量计算

Earthwork calculations based on Auto Desk Map 3D

为了提高土方量计算的精度及效率,文中提出了基于AutoDesk Map 3D的土方量计算方法.该方法是以AutoDesk Map 3D作为软件开发平台,建立土方量计算原始表面与设计表面的精确地形模型,计算两个曲面之间的组合体积来实现土方量的计算.文中通过对比分析提出了采用混合表示节点及三角形邻接关系的数据结构,建立狄洛尼三角网,然后通过加入约束条件建立带约束条件的狄洛尼三角网来模拟地形模型.根据提出的算法编写程序代码,利用VBA对系统进行开发,生成工程文件,然后加载到Autodesk Map 3D软件平台,建立计算土方量模块.

In order to improve the precision and efficiency of earthwork volume calculation, an earthwork volume calculation method based on the Auto Desk Map 3D is put forward in the paper. Through establishing the DTM of the original surface and the design surface, the volume is calculated through the combination between two surfaces to achieve an accurate calculation of earthwork volume. Through the contrast and analysis, the data structure is presented by mixing said node and triangle abutting relationship to establish Delaunay triangulation. Constraints being added, the constrained Delaunay triangulation is established to simulate terrain model. Program code is written according to the proposed algorithm. VBA is adopted for system development, to generate project files, and then to load in the Autodesk Map3D software platform, so as to realize the module establishment of earthwork volume calculation.