Research and Development of Large Scene Railway Route Selection System Based on Domestic GIS+BIM Graphics Engine
In view of the problems of insufficient real-time geographical and geological information service and foreign origin of software platform in the design of railway engineering large-scale scene route selection,it is urgent to develop a indigenous large scene railway route selection system.Firstly,taking into account the work characteristics of railway engineering large-scale scene route selection design,an integrated collaborative business architecture including geographical and geological environment and route selection design is constructed.Starting from the requirements of high scalability,high availability and elastic scalability for system operation,the Kubernetes+Istio+gRPC microservice system architecture is selected and applied to construct the technical architecture including data resource layer,infrastructure layer,data service layer,core component layer,application service layer and other basic support.Secondly,the domestic BIM geometric modeling and rendering engine is selected,and the Mesh modeling lightweight technology and GIS data fusion technology are broken through according to the characteristics of the large scene of railway linear engineering.Then,based on the system architecture design and domestic graphics engine,a large-scene railway route selection system including public capacity,dynamic loading of geographic and geological data,route selection design,project cost and collaborative design is developed.Finally,the system has been successfully applied in the design of railway route selection for about 1,440 km such as Chang-Gan and Yi-Fu railway,which improves the quality and efficiency of route scheme optimization decision-making.The system development results show that the large-scene railway route selection system is based on the independent domestic graphics engine,and integrates the latest BIM engine and GIS technology to provide users with one-stop route selection design services.The system realizes the efficient construction of geographical and geological scenes and the efficient implementation of collaborative line selection design.Through the application of these research results in the design of railway route selection in Chang-Gan and Yi-Fu railway,its practicability and effectiveness are further verified.These applications not only bring significant economic benefits to railway project,but also have a positive impact on society and ecological environment.
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