铁路线路三维设计模型建立方法的研究

Study on building three dimension railway line design model

首先介绍了既有线路三维设计模型的建立理论及实现方法。通过分析它们存在的困难和不足 ,提出了一种利用航测或外业勘测地形数据 ,在微机上建立设计线路行经地区的三维地形模型以及利用平、纵、横设计数据 ,建立三维线路模型 。

At first, the theories and methods for building the three dimension route design model which have been existed are introduced. Then according to analysing its shortcomings and difficulties, a new method based on micro computer is presented. It includes generating a three dimension terrain model by means of aerial survey data or manual survey data in the region where the railway line will be constructed; utilizing the plan, profile and cross section data to create the three dimension railway line model; and creating a three dimension overall terrain and railway line model by using the 3D drawing blanketing technology.