Multi-granularity and multi-level expression method of urban rail transit composition structure

• Main Authors: ZHANG YUNLIN, WANG JIAN, ZENG WENQU, SHI HAI'OU, YUAN QUAN, NONG XINGZHONG
• Format: Patent
• Language: Chinese; English
• Published: 26.06.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention discloses a multi-granularity and multi-level expression method of an urban rail transit composition structure, and relates to the technical field of model expression of urban rail transit design. The method comprises the following steps: (1) establishing an abstract data model consisting of seven dimensions, namely specialty, components, three-dimensional geometry, cost, time periodand the like, of urban rail transit engineering; (2) performing two-section type standard coding on the composition of the whole urban rail transit project, and forming a coding structure tree; (3) mapping the seven-dimensional data model to a coding structure tree to form a data sequence of standard organization; and (4) establishing computer access expression based on coded IFC object + full life cycle extensible attribute data based on built-in coding logic and an IFC entity + relational data expression attribute mode. A complex urban rail transit system engineering body is decomposed intoexpressions with the mini