Abstract:
In order to make intuitive and vivid presentation on the planning and design results of urban rail transit hub, promote relevant parties to reach an consistent understanding of the engineering planning and design scheme, and ensure the rationality and implementability of urban rail hub planning and design, the three-dimensional visual presentation system for urban rail transit hub is developed via a technical solution combining BIM, GIS and the open source UnrealEngine. The system uses the existing BIM data and 3D GIS data of the hub project to build a 3D real simulation model of the hub with realistic effect in the UE environment, in which the spatial data preprocessing and fusion, the typical scene rendering processing and the addition of environmental elements are completed. Besides, this system provides the functions of natural lighting simulation and surveillance video simulation to meet the special design requirements such as analysis and evaluation of the effect of introducing natural lighting into the underground structure of the station and aided design of video suverllaince points. The presentation system provides a convenient man-machine interface to enable the users to customize and output planning and design results of the hub into videos, high-definition renderings, and impact planning diagrams, meeting various application requirements such as site simulation, design verification, results reporting, design communication, and project management.nt.