摘要
针对机场净空区设计、计算以及人工出图工作繁重等问题,在三维地形模型的基础上提出机场净空区设计专用CAD系统的功能框架,采用参数化设计方法开发相应的集成CAD系统.采用ARX(AutoCAD Runtime eXtension)和VC++对AutoCAD进行二次开发,在AutoCAD中实现该专用CAD系统的各项重要功能,给出三维地形三角网格的数据结构以及净空区各限制面的建模方法;通过构建和比较分析机场实地三维模型和机场净空立体模型,直观地显示出机场净空障碍物的分布,自动生成包含净空区地形的平面图和剖面图.某机场的实例表明,该专用CAD系统可简化繁重的计算和出图工作,对促进机场净空区设计具有参考价值.
As to the heavy tasks of airfield clearance zone design such as design, calculation, manual plotting and so on, the function frame of a special CAD system is proposed for airfield clearance zone design based on 3D terrain model and an integrated CAD system is developed by parametrization method. Some important functions of the special CAD system are implemented by the secondary development of AutoCAD using ARX（ AutoCAD Runtime eXtension） and VC ＋ ＋. The establishment of data structure of 3D terrain triangle grids and modeling method of airfield clearance zone＇s each limit surface are proposed. By construction, comparison and analysis on the 3D models of terrain and airfield clearance zone, the distribution of obstacles in airfield clearance zone can be displayed intuitively, and the iehnography and section graphs of airfield clearance zone including terrain graphs can be generated automatically. The application of an airport indicates that the special CAD system can simplify the heavy calculation and plotting tasks and has important significance to promoting airfield clearance design.
出处
《计算机辅助工程》
2010年第1期70-73,83,共5页
Computer Aided Engineering
基金
北京工商大学青年教师科研启动基金
