铁道标准设计2025，Vol.69Issue(3)：23-29,39,8.DOI:10.13238/j.issn.1004-2954.202407270001
基于Web的铁路工程大场景建模与渲染研究
Research on Web-Based Large-Scale Modeling and Rendering for Railway Engineering Projects
摘要
Abstract
Railway engineering projects are typically distributed along linear paths,and using 3D spherical large-scale scenes provides an effective way to showcase the outcomes of such projects.This method has become a standard technology for 3D visualization in railway engineering.However,due to the unique characteristics of railway structures and facilities,developing a 3D visualization system for large-scale railway engineering projects still faces technical challenges,such as rapid model construction,integration with geographic information systems(GIS),and efficient rendering of large-scale scenes.To address these challenges,this paper proposes a comprehensive technical solution for a Web-based 3D system for large-scale railway engineering projects,based on in-depth research into relevant technologies.A railway engineering modeling engine was developed,and the rendering processes and mechanisms for large-scale scenes were optimized.First,the overall technical route of"data clouding,backend computation,and frontend rendering"was proposed.In this approach,all data were stored centrally on cloud servers,with backend servers handling modeling and computation,while models were rendered and presented on the frontend web page.The technical route not only ensured data security but also facilitated balanced load distribution for computation and networking,significantly enhancing the user experience.Secondly,a self-developed railway engineering modeling engine was introduced.This engine,which combined layout-based modeling with a model library,enabled the rapid creation of 3D models for railway engineering.Additionally,a Newtonian iteration-based prediction method was proposed,which allowed for efficient integration modeling of railway engineering models and terrain.Finally,a dynamic loading technique was proposed.Through in-depth optimization of the large-scale scene rendering process and mechanisms,real-time rendering of massive models was achieved without sacrificing visualization quality.This effectively addressed the issues of lag and operational delays that occur during the browsing of large-scale scenes.Based on these methods,a comprehensive railway engineering route selection system was developed,and the feasibility and effectiveness of the methods were verified through practical project applications.关键词
铁路工程/Web/三维建模/大场景渲染/融合建模Key words
railway engineering/Web/three-dimensional modeling/large-scale rendering/integrated modeling分类
交通运输引用本文复制引用
刘祾頠..基于Web的铁路工程大场景建模与渲染研究[J].铁道标准设计,2025,69(3):23-29,39,8.基金项目
国家重点研发计划项目(2021YFB2600404) （2021YFB2600404）
中国铁建股份有限公司科技研发计划项目(2022-A02) （2022-A02）
中铁第四勘察设计院集团有限公司科技研发项目(2021D017) （2021D017）
