高速公路三维GIS系统的设计与实现

Design and Realization of Three-Dimensional GIS System for Expressway

二维GIS在高速公路建设、管理、运营等阶段均发挥了巨大作用,提升了高速公路的信息化水平。随着应用的逐步深入,二维GIS在空间信息直观展示和高级空间分析等方面存在的不足越发凸显。随着三维GIS技术的不断发展,有效的弥补二维GIS中存在的不足。文章在精细化三维建模的基础上,介绍了三维GIS系统的总体架构,并对高速公路三维GIS系统的具体实现进行研究,主要包含三维模型展示、设备设施叠加、二三维联动、突发事件展示、行驶轨迹回放等功能模块,为三维GIS系统在高速公路建、管、养中的应用提供一定的借鉴。

Two-dimensional GIS has played an important role in the construction, management and operation of expressway, promoting the informatization level of expressway. With the gradual deepening of application, the shortcomings of two-dimensional GIS in visual display of spatial information and advanced spatial analysis have become more and more prominent. With the continuous development of three-dimensional GIS technology, the shortcomings of two-dimensional GIS can be effectively remedied. Based on the refined 3D modeling, this paper introduces the general framework of three-dimensional GIS system, and studies the detailed realization of three-dimensional GIS system for expressway, which includes three-dimensional model display, equipments and facilities overlay, interactive of 2D and 3D, emergency display, playback of vehicle track and other functional modules. This paper provides some reference for the application of three-dimensional GIS system in the construction, management and maintenance of expressway.