%0 Journal Article %T 面向GIS应用的铁路工程三维信息模型数据交换方法<br>Data Exchange Method of Railway Engineering Information Model for GIS Applications %A 李浩 %A 赵国堂 %A 范丁元 %A 范登科< %A br> %A LI Hao %A ZHAO Guotang %A FAN Dingyuan %A FAN Dengke %J 西南交通大学学报 %D 2018 %R 10.3969/j.issn.0258-2724.2018.01.024 %X 为实现铁路三维信息模型在不同平台之间的互操作和信息共享，提出了一种基于多元信息分离和独立存储、支持简化层次细节和场景构建的模型数据交换方法RIMTrans.首先，从RIM各单元要素中提取描述几何特征的参数，通过快速网格化等算法将其转换为GIS需要的Mesh数据；其次，建立IFC与RIM语义之间的映射关系，保证了数据交换过程中语义信息的完整性；第三，引用IFC规定的属性定义和描述方式作为标准交换格式，实现属性信息的传递；最后，以语义为主导，从几何、属性、语义3个方面对RIM进行了多层次细节简化.通过选择某铁路工程设计工点案例区域，采用RIMTrans方法开展了设计阶段信息模型的格式转换实验，结果表明，本文提出的数据交换方法灵活可控，三维模型中附带的铁路工程语义信息完整性可达85%，与传统作业方式相比，RIM信息模型的转换时间耗用降低70%，集成到三维GIS场景中的准确度达100%.<br>：In order to realize interoperability and information sharing between different platforms, we propose a model data exchange method (called RIMTrans) supporting level of details (LoDs) and scene construction, based on multiple information separation and independent storage. First, parameters describing geometric features were extracted from elements of the Railway Engineering 3D Information Model (RIM), and the Mesh data needed for Geographic Information Systems (GIS) was transformed by fast meshing. Second, the mapping relationship between Industry Foundation Classes (IFC) and RIM semantics was established to ensure the integrity of semantic information during the data exchange process. Third, the attribute definition and description mode specified by IFC were used as the standard exchange format to realize the transmission of attribute information. Finally, RIMs were simplified as mult-level detailed GIS models from the geometric, attribute, and semantic aspects. By selecting a case area of a railway engineering design work station, we adopted the RIMTrans method to carry out the format conversion experiment of the design phase information model. The results show that the data exchange method proposed in this paper is flexible and controllable. The integrity of the railway project semantic information in the 3D model is up to 85%. Compared with the traditional operation mode, the conversion time of the RIM is reduced by 70%, and the accuracy when RIM is integrated into the 3D scene is as high as 100% %K 铁路工程三维信息模型 %K 格式转换 %K GIS %K RIM %K < %K br> %K railway engineering 3D information model %K format transformation %K GIS %K RIM %U http://manu19.magtech.com.cn/Jweb_xnjd/CN/abstract/abstract12549.shtml