Research On3D Model In Highway Route Selection In Teaching

China’s vast territory, complicated geology, the traditional line selection method hasgreat limitations, not for a large range of efficient alternatives demonstration, how to choose afeasible technology, economic reasonable route in the complex terrain environment, becomethe problem before personnel of Highway Survey and design.Thus, emerge as the timesrequire3D model technology of road line selection.Road line selection model is establish thethree-dimensional model of line selection terrain in computer, create photorealistic renderingsand3D animation and other visual model, which can be visualized analysis and evaluation ofthe route selection, selection.Highway line selection using the digital3D models, is a newmethod of highway design, also is the development direction of highway design in the future,is an important content of the integration of Highway Survey and design.This paper first introduces the characteristics of various data collection technology,emphatically discusses the digital terrain model system is the most common of the aerialsurvey data acquisition, digital map data collection and the total station field three methods ofdata collection.On this basis, introduces the digital terrain model connecting role between thefield survey and design within the industry, and specifically introduces the establishment,application and effect of line selection of digital terrain model.At last discusses the construction of three-dimensional model of mountain area route,respectively, along the river (XI) line and the crossing line as an example, thethree-dimensional model is applied to the highway route selection, work out differentrepresentative of mountainous highway route selection model, and according to the outputdesign results of three-dimensional graphics to draw the line. Through the analysis oftopographic contrast,3D graphics than the graphic is more intuitive, more conducive to thestudents for topographic map of the understanding, is conducive to the overall grasp,convenient location.