“铁路各设计阶段数字选线平台”的应用

摘要

研究目的:数字地球平台(如Google Earth)提供了全球丰富的数字地形和数字影像资料.在铁路项目前期研究中,如何快速获取研究区域内的地形高程数据,构建三角网数字地面模型,应用CAD、可视化、人机交互等技术,是实现线路交互式联动可视化,完成线路选线设计的基础.本文阐述了“铁路各设计阶段数字选线平台”在新建铁路项目前期研究,尤其在缺少矢量化地形图的国外铁路项目中的应用过程,以实际项目证明了软件的应用价值.为类似软件的推广应用提供了有益参考.研究结论:(1)“铁路各设计阶段数字选线平台”已广泛应用于我院承担的国内外前期项目研究的选线设计工作中,从而实现了将传统的二维静态设计提升为三维动态设计,显著提高线路设计的效率和水平；(2)“铁路各设计阶段数字选线平台”的应用,可大大降低设计人员的工作强度,提高设计质量.%Research purposes: The digital earth platform like the Google Earth can provide the rich global digital terrainrndata and the digital image data. In the earlier - stage study on the railway project, how to quickly get the data on thernregional terrain elevation, build the digital triangulation network ground model and apply the technologies of the CAD,rnvisualization and human -computer interaction are the basis to realize the visualization of the tracks' interactive linkagernand make the the track alignment design. This paper describes the earlier - stage research on application of the digitalrnalignment platform for the new railway project and especially presents the application of the platform in the railwayrnprojects at home and abroad under the condition of lacking the vector quantization topographic map to prove its practicalrnvalue by the actual projects for providing the reference to its application.rnResearch conclusions: (1) The digital alignment platform for the different railway design stages has been widely used inrnthe alignment designs of the earlier - stge study made by us at home and abroad to realize the three - dimensionalrndynamic design from the traditional two - dimensional static design and it can obviously enhance the efficiency and levelrnof the track design. (2) The application of the platform can much reduce the working strength of designer and improvernthe design quality.