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机场cad
相关语句
  airport cad
     Study of 3--Dimentional Core Model for Road and Airport CAD System
     道路、机场CAD系统三维工程设计模型研究
短句来源
     Based on coons model in the core model of airport CAD system, the authors try to apply this model for the vertical design of at-grade intersections.
     本文以机场CAD 系统的核心模型中设计面Coons 曲面模型为基础,尝试将这一模型应用于道路平面交叉口立面设计。
短句来源
  相似匹配句对
     Airside Plane Sizes CAD in Military Airfield
     军用机场飞行场地平面尺寸CAD
短句来源
     Application and Development of CAD Technology for Airport Engineering
     CAD技术在机场工程中的应用与发展
短句来源
     CAD of Gating System
     浇注系统CAD
短句来源
     Airport Is No Longer What It Was Before
     机场:今非昔比
短句来源
     Airport Gateway Terminal
     机场入口通道
短句来源
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Aimed at the limitation of existing model in domestic road CAD systems, by analyzing some typical road CAD systems at home and abroad, and combined with the authors' experiences during researching and developing CAD system, the problem about model expression of design object is presented. It is pointed out that with the increasing extension in scale in the construction of highways and airports, in order to strengthen the adaptability of CAD system and to raise the developing level of software, it's found necessary...

Aimed at the limitation of existing model in domestic road CAD systems, by analyzing some typical road CAD systems at home and abroad, and combined with the authors' experiences during researching and developing CAD system, the problem about model expression of design object is presented. It is pointed out that with the increasing extension in scale in the construction of highways and airports, in order to strengthen the adaptability of CAD system and to raise the developing level of software, it's found necessary to establish a core model of system. This paper, based on computing geometry and data structure theory, studies the core model of systems in detail and suggests its fundamental content, general structure and fundamental function. At the same time, the research is closely combined with the development of airport CAD software so that it is more practical.

针对国内道路CAD系统中已有模型的局限性,通过分析国内外典型道路CAD系统,并结合作者研究和开发CAD系统的经验,提出了道路、机场CAD系统中设计对象模型表达课题.指出:随着道路、机场建设规模的日益扩大,为增强CAD系统的适应能力,提高软件开发水平,必须建立系统核心模型.文中对系统核心模型进行了较详细的研究,提出了系统核心模型的基本内容、总体框架结构和基本功能.同时结合机场CAD系统软件的开发,使研究工作更具有实际意义.

In this paper the 3D model for the roads in airport CAD system with Coons surface model is mainly discussed. Compared with traditional strip and grid model, the expression is more normal and can accurately describe the design surface and the Construction Ground base. The basic calculation method and OOP method used to realise the class hierarchy structure were also introduced and applied in roads in airport CAD system.

针对机场CAD系统开发的需要,研制了采用孔斯(Coons)曲面构造的机场场道区三维曲面模型与传统骨架模型和格网高程模型相比,具有更加规范的表达形式,而且能够更加准确地描述在此范围内的复杂设计表面及结构物基底面.该模型的基本功能采用面向对象程序设计方法实现,已在机场CAD系统中得到应用.

Based on coons model in the core model of airport CAD system, the authors try to apply this model for the vertical design of at-grade intersections. The practice proves, that the model can describe the design surface of intersection. It is easier to calculate the height and to study the scheme.

本文以机场CAD 系统的核心模型中设计面Coons 曲面模型为基础,尝试将这一模型应用于道路平面交叉口立面设计。实践表明,该模型能够较好地表达道路平面交叉口设计面,对于交叉口立面设计中的特征点高程调整、方案确定等较为方便。

 
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