城市信息模型CIM标准体系构建研究OACHSSCD

With the continuously raising requirement of city precision management,the standardization construction of city information modelling(CIM),as important data and technical support,has become an important means to coordinate the development of multi-field and multi-department collaboration.To lead the practice of city-level CIM by standards system,this paper proposes a three-dimensional conceptual model and a pyramid reference model architecture of CIM standards system,and constructs a standards system framework composed of 3 layers and 8 categories.It takes Nanjing as an example to conduct the implementation of CIM standards system and practices a full process mode of city spatial information service consisting of"standards system construction,standards development and standards implementation".Moreover,it explores the construction path from local practice to international standards.