摘要：研究目的：由于所关注的应用领域不同，以三维信息模型为研究对象的BIM和GIS在粒度、尺度等方面 展现出各自的优势。然而，铁路工程所具有的跨度长、范围广、工点复杂多样等特点决定了仅依赖BIM或GIS 技术推动该行业信息化建设具有局限性。本文旨在研究二者融合技术用于铁路工程信息化建设的方法。 研究结论：本文从研究和应用两个层面介绍了当前在铁路信息化建设中为BIM与GIS融合所做的探索 和尝试：( 1)研究了铁路工程要素语义扩展方法，奠定了 BIM与GIS之间语义信息交换的基础；（2)提出了以 数据格式转换为核心的BIM模型跨GIS平台集成方法，并从几何、语义、属性三个方面验证了实施BIM与GIS 融合技术的可行性；（3)本研究成果已在哈尔滨站改造、杭州南站新建等多个铁路工程BIM设计项目中开展 应用，极大增强了大型站房模型的数据共享能力，提高了 GIS平台对BIM设计模型的集成和管理水平。

Abstract ：Research purposes ： As focusing on different application scopes，BIM and GIS， employing 3D information model as research object，show their respective advantages in various aspects，such as detail and scale. Unfortunately， it has limitation to prompt railway information deployment using BIM1 or GIS independently. This paper makes the researches on fusion technology of BIM and GIS applied in railway information deployment. Research conclusions ： This paper introduces the exploration for railway information employment from two perspectives ： research and application. ( 1) An investigation is proposed on semantic expansion scheme of railway engineering element which lays a foundation to exchange semantic info between BIM and GIS. (2) The scenaro is proposed to integrate BIM1 model on GIS platform with data format transformation method as the core. Sequentially，from three aspects including Geometer，semantic and property，the validation is made to illustrate the practicability of applying this fusion technology. (3 ) The research results have always been applied in several BIM deigning projects for railway engineering such as Harbin railway station reconstructed project and Hangzhou South railway station new project. It indicates that the data Sharing capability of large station models is much more reinforced，the integration and management level of GIS platform employing BIM design models are also improved.